172.102 Special provisions.

(a) General. When column 7 of the 172.101 table refers to a special provision for a hazardous material, the meaning and requirements of that provision are as set forth in this section. When a special provision specifies packaging or packaging requirements --

(1) The special provision is in addition to the standard requirements for all packagings prescribed in 173.24 of this subchapter and any other applicable packaging requirements in subparts A and B of part 173 of this subchapter; and

(2) To the extent a special provision imposes limitations or additional requirements on the packaging provisions set forth in column 8 of the 172.101 table, packagings must conform to the requirements of the special provision.

(b) Description of codes for special provisions. Special provisions contain packaging provisions, prohibitions, exceptions from requirements for particular quantities or forms of materials and requirements or prohibitions applicable to specific modes of transportation, as follows:

(1) A code consisting only of numbers (for example, "11") is multi-modal in application and may apply to bulk and non-bulk packagings.

(2) A code containing the letter "A" refers to a special provision which applies only to transportation by aircraft.

(3) A code containing the letter "B" refers to a special provision which applies only to bulk packaging requirements. Unless otherwise provided in this subchapter, these special provisions do not apply to IM portable tanks.

(4) A code containing the letter "H" refers to a special provision which applies only to transportation by highway.

(5) A code containing the letter "N" refers to a special provision which applies only to non-bulk packaging requirements.

(6) A code containing the letter "R" refers to a special provision which applies only to transportation by rail.

(7) A code containing the letter "T" refers to a special provision which applies only to transportation in IM portable tanks.

(8) A code containing the letter "W" refers to a special provision which applies only to transportation by water.

(c) Tables of special provisions. The following tables list, and set forth the requirements of, the special provisions referred to in column 7 of the 172.101 table.

(1) Numeric provisions. These provisions are multi-modal and apply to bulk and non-bulk packagings:

Code/Special Provisions

1      This material is poisonous by inhalation (see 171.8 of this subchapter) in Hazard Zone A (see 173.116(a) or 173.133(a) of this subchapter), and must be described as an inhalation hazard under the provisions of this subchapter.

2      This material is poisonous by inhalation (see 171.8 of this subchapter) in Hazard Zone B (see 173.116(a) or 173.133(a) of this subchapter), and must be described as an inhalation hazard under the provisions of this subchapter.

3      This material is poisonous by inhalation (see 171.8 of this subchapter) in Hazard Zone C (see 173.116(a) of this subchapter), and must be described as an inhalation hazard under the provisions of this subchapter.

4      This material is poisonous by inhalation (see 171.8 of this subchapter) in Hazard Zone D (see 173.116(a) of this subchapter), and must be described as an inhalation hazard under the provisions of this subchapter.

5      If this material meets the definition for a material poisonous by inhalation (see 171.8 of this subchapter), a shipping name must be selected which identifies the inhalation hazard, in Division 2.3 or Division 6.1, as appropriate.

6      This material is poisonous-by-inhalation and must be described as an inhalation hazard under the provisions of this subchapter.

8      A hazardous substance that is not a hazardous waste may be shipped under the shipping description "Other regulated substances, liquid or solid, n.o.s.", as appropriate. In addition, for solid materials, special provision B54 applies.

9      Packaging for certain PCBs for disposal and storage is prescribed by EPA in 40 CFR 761.60 and 761.65.

11      The hazardous material must be packaged as either a liquid or a solid, as appropriate, depending on its physical form at 55 C (131 F) at atmospheric pressure.

12      In concentrations greater than 40 percent, this material has strong oxidizing properties and is capable of starting fires in contact with combustible materials. If appropriate, a package containing this material must conform to the additional labeling requirements of 172.402 of this subchapter.

13      The words "Inhalation Hazard" shall be entered on each shipping paper in association with the shipping description, shall be marked on each non-bulk package in association with the proper shipping name and identification number, and shall be marked on two opposing sides of each bulk package. Size of marking on bulk package must conform to 172.302(b) of this subchapter. The requirements of 172.203(m) and 172.505 of this subchapter do not apply.

14      Motor fuel antiknock mixtures are:
    a. Mixtures of one or more organic lead mixtures (such as tetraethyl lead, triethylmethyl lead, diethyldimethyl lead, ethyltrimethyl lead, and tetramethyl lead) with one or more halogen compounds (such as ethylene dibromide and ethylene dichloride), hydrocarbon solvents or other equally efficient stabilizers; or

    b. tetraethyl lead.

15      This entry applies to "Chemical kits" and "First aid kits" containing one or more compatible items of hazardous materials in boxes, cases, etc. that are used for medical, analytical, diagnostic or testing purposes. For transportation by aircraft, materials forbidden for transportation by passenger aircraft or cargo aircraft may not be included in the kits. Chemical kits and first aid kits are excepted from the specification packaging requirements of this subchapter when packaged in combination packagings. Chemical kits and first aid kits are also excepted from the labeling and placarding requirements of this subchapter, except when offered for transportation or transported by air. Chemical and first aid kits may be transported in accordance with the consumer commodity and ORM exceptions in 173.156, provided they meet all required conditions. Kits that are carried on board transport vehicles for first aid or operating purposes are not subject to the requirements of this subchapter.

16      This description applies to smokeless powder and other solid propellants that are used as powder for small arms and have been classed as Division 1.3 and 4.1 in accordance with 173.56 of this subchapter.

18 This description is authorized only for fire extinguishers listed in 173.309(b) of this subchapter meeting the following conditions:
    a. Each fire extinguisher may only have extinguishing contents that are nonflammable, non-poisonous, non-corrosive and commercially free from corroding components.

    b. Each fire extinguisher must be charged with a nonflammable, non-poisonous, dry gas that has a dew-point at or below minus 46.7 C (minus 52 F) at 101 kPa (1 atmosphere) and is free of corroding components, to not more than the service pressure of the cylinder.

    c. A fire extinguisher may not contain more than 30% carbon dioxide by volume or any other corrosive extinguishing agent.

    d. Each fire extinguisher must be protected externally by suitable corrosion-resisting coating.

19      For domestic transportation only, the identification number "UN1075" may be used in place of the identification number specified in column (4) of the 172.101 table. The identification number used must be consistent on package markings, shipping papers and emergency response information.

21      This material must be stabilized by appropriate means (e.g., addition of chemical inhibitor, purging to remove oxygen) to prevent dangerous polymerization (see 173.21(f) of this subchapter).

22      If the hazardous material is in dispersion in organic liquid, the organic liquid must have a flash point above 50 C (122 F).

23      This material may be transported under the provisions of Division 4.1 only if it is so packed that the percentage of diluent will not fall below that stated in the shipping description at any time during transport. Quantities of not more than 500 g per package with not less than 10 percent water by mass may also be classed in Division 4.1, provided a negative test result is obtained when tested in accordance with test series 6(c) of the UN Manual of Tests and Criteria (see 171.7 of this subchapter).

24      Alcoholic beverages containing more than 70 percent alcohol by volume must be transported as materials in Packing Group II. Alcoholic beverages containing more than 24 percent but not more than 70 percent alcohol by volume must be transported as materials in Packing Group III.

26      This entry does not include ammonium permanganate, the transport of which is prohibited except when approved by the Associate Administrator.

28      The dihydrated sodium salt of dichloroisocyanuric acid is not subject to the requirements of this subchapter.

29      Lithium cells and batteries and equipment containing or packed with lithium cells and batteries which do not comply with the provisions of 173.185 of this subchapter may be transported only if they are approved by the Associate Administrator.

30      Sulfur is not subject to the requirements of this subchapter if transported in a non-bulk packaging or if formed to a specific shape (for example, prills, granules, pellets, pastilles, or flakes). A bulk packaging containing sulfur is not subject to the placarding requirements of subpart F of this part, if it is marked with the appropriate identification number as required by subpart D of this part. Molten sulfur must be marked as required by 172.325 of this subchapter.

31      Materials which have undergone sufficient heat treatment to render them non-hazardous are not subject to the requirements of this subchapter.

32      Polymeric beads and molding compounds may be made from polystyrene, poly(methyl methacrylate) or other polymeric material.

33      Ammonium nitrites and mixtures of an inorganic nitrite with an ammonium salt are prohibited.

34      The commercial grade of calcium nitrate fertilizer, when consisting mainly of a double salt (calcium nitrate and ammonium nitrate) containing not more than 10 percent ammonium nitrate and at least 12 percent water of crystallization, is not subject to the requirements of this subchapter.

35      Antimony sulphides and oxides which do not contain more than 0.5 percent of arsenic calculated on the total mass do not meet the definition of Division 6.1.

36      The maximum net quantity per package is 5 L (1 gallon) or 5 kg (11 pounds).

37      Unless it can be demonstrated by testing that the sensitivity of the substance in its frozen state is no greater than in its liquid state, the substance must remain liquid during normal transport conditions. It must not freeze at temperatures above −15 C (5 F).

38      If this material shows a violent effect in laboratory tests involving heating under confinement, the labeling requirements of Special Provision 53 apply, and the material must be packaged in accordance with packing method OP6 in 173.225 of this subchapter. If the SADT of the technically pure substance is higher than 75 C, the technically pure substance and formulations derived from it are not self-reactive materials and, if not meeting any other hazard class, are not subject to the requirements of this subchapter.

39      This substance may be carried under provisions other than those of Class 1 only if it is so packed that the percentage of water will not fall below that stated at any time during transport. When phlegmatized with water and inorganic inert material, the content of urea nitrate must not exceed 75 percent by mass and the mixture should not be capable of being detonated by test 1(a)(i) or test 1(a) (ii) in the UN Recommendations Tests and Criteria (see 171.7 of this subchapter).

40      Polyester resin kits consist of two components: a base material (Class 3, Packing Group II or III) and an activator (organic peroxide), each separately packed in an inner packaging. The organic peroxide must be type D, E, or F, not requiring temperature control, and be limited to a quantity of 125 mL (4.22 ounces) per inner packaging if liquid, and 500 g (1 pound) if solid. The components may be placed in the same outer packaging provided they will not interact dangerously in the event of leakage. Packing group will be II or III, according to the criteria for Class 3, applied to the base material.

43      The membrane filters, including paper separators and coating or backing materials, that are present in transport, must not be able to propagate a detonation as tested by one of the tests described in the UN Manual of Tests and Criteria, Part I, Test series 1(a) (see 171.7 of this subchapter). On the basis of the results of suitable burning rate tests, and taking into account the standard tests in the UN Manual of Tests and Criteria, Part III, subsection 33.2.1 (see 171.7 of this subchapter), nitrocellulose membrane filters in the form in which they are to be transported that do not meet the criteria for a Division 4.1 material are not subject to the requirements of this subchapter. Packagings must be so constructed that explosion is not possible by reason of increased internal pressure. Nitrocellulose membrane filters covered by this entry, each with a mass not exceeding 0.5 g, are not subject to the requirements of this subchapter when contained individually in an article or a sealed packet.

44      The formulation must be prepared so that it remains homogeneous and does not separate during transport. Formulations with low nitrocellulose contents and neither showing dangerous properties when tested for their ability to detonate, deflagrate or explode when heated under defined confinement by the appropriate test methods and criteria in the UN Recommendations, Tests and Criteria, not classed as a Division 4.1 (flammable solid) when tested in accordance with the procedures specified in 173.124 of this subchapter (chips, if necessary, crushed and sieved to a particle size of less than 1.25 mm) are not subject to the requirements of this subchapter.

45      Temperature should be maintained between 18 C (64.4 F) and 40 C (104 F). Tanks containing solidified methacrylic acid must not be reheated during transport.

46      This material must be packed in accordance with packing method OP6 (see 173.225 of this subchapter). During transport, it must be protected from direct sunshine and stored (or kept) in a cool and well-ventilated place, away from all sources of heat.

47      Mixtures of solids which are not subject to this subchapter and flammable liquids may be transported under this entry without first applying the classification criteria of Division 4.1, provided there is no free liquid visible at the time the material is loaded or at the time the packaging or transport unit is closed. Each packaging must correspond to a design type that has passed a leakproofness test at the Packing Group II level. Small inner packagings consisting of sealed packets containing less than 10 mL of a Class 3 liquid in Packing Group II or III absorbed onto a solid material are not subject to this subchapter provided there is no free liquid in the packet.

48      Mixtures of solids which are not subject to this subchapter and toxic liquids may be transported under this entry without first applying the classification criteria of Division 6.1, provided there is no free liquid visible at the time the material is loaded or at the time the packaging or transport unit is closed. Each packaging must correspond to a design type that has passed a leakproofness test at the Packing Group II level. This entry may not be used for solids containing a Packing Group I liquid.

49      Mixtures of solids which are not subject to this subchapter and corrosive liquids may be transported under this entry without first applying the classification criteria of Class 8, provided there is no free liquid visible at the time the material is loaded or at the time the packaging or transport unit is closed. Each packaging must correspond to a design type that has passed a leakproofness test at the Packing Group II level.

50      Cases, cartridge, empty with primer which are made of metallic or plastic casings and meeting the classification criteria of Division 1.4 are not regulated for domestic transportation.

51      This description applies to items previously described as "Toy propellant devices, Class C" and includes reloadable kits. Model rocket motors containing 30 grams or less propellant are classed as Division 1.4S and items containing more than 30 grams of propellant but not more than 62.5 grams of propellant are classed as Division 1.4C.

52      This entry may only be used for substances that do not exhibit explosive properties of Class 1 (explosive) when tested in accordance with Test Series 1 and 2 of Class 1 (explosive) in the UN Manual of Tests and Criteria, Part I (incorporated by reference; see 171.7 of this subchapter).

53      Packages of these materials must bear the subsidiary risk label, "EXPLOSIVE", unless otherwise provided in this subchapter or through an approval issued by the Associate Administrator, or the competent authority of the country of origin. A copy of the approval shall accompany the shipping papers.

54      Maneb or maneb preparations not meeting the definition of Division 4.3 or any other hazard class are not subject to the requirements of this subchapter when transported by motor vehicle, rail car, or aircraft.

55      This device must be approved in accordance with 173.56 of this subchapter by the Associate Administrator.

56      A means to interrupt and prevent detonation of the detonator from initiating the detonating cord must be installed between each electric detonator and the detonating cord ends of the jet perforating guns before the charged jet perforating guns are offered for transportation.

57      Maneb or Maneb preparations stabilized against self-heating need not be classified in Division 4.2 when it can be demonstrated by testing that a volume of 1 m3 of substance does not self-ignite and that the temperature at the center of the sample does not exceed 200 C, when the sample is maintained at a temperature of not less than 75 C 2 C for a period of 24 hours, in accordance with procedures set forth for testing self-heating materials in the UN Manual of Tests and Criteria (see 171.7 of this subchapter).

58      Aqueous solutions of Division 5.1 inorganic solid nitrate substances are considered as not meeting the criteria of Division 5.1 if the concentration of the substances in solution at the minimum temperature encountered in transport is not greater than 80% of the saturation limit.

59      Ferrocerium, stabilized against corrosion, with a minimum iron content of 10 percent is not subject to the requirements of this subchapter.

60      After September 30, 1997, an oxygen generator, chemical, that is shipped with its means of initiation attached must incorporate at least two positive means of preventing unintentional actuation of the generator, and be classed and approved by the Associate Administrator. The procedures for approval of a chemical oxygen generator that contains an explosive means of initiation (e.g., a primer or electric match) are specified in 173.56 of this subchapter. Each person who offers a chemical oxygen generator for transportation after September 30, 1997, shall: (1) ensure that it is offered in conformance with the conditions of the approval; (2) maintain a copy of the approval at each facility where the chemical oxygen generator is packaged; and (3) mark the approval number on the outside of the package.

61      A chemical oxygen generator is spent if its means of ignition and all or a part of its chemical contents have been expended.

64      The group of alkali metals includes lithium, sodium, potassium, rubidium, and caesium.

65      The group of alkaline earth metals includes magnesium, calcium, strontium, and barium.

66      Formulations of these substances containing not less than 30 percent non-volatile, non-flammable phlegmatizer are not subject to this subchapter.

70      Black powder that has been classed in accordance with the requirements of 173.56 of this subchapter may be reclassed and offered for domestic transportation as a Division 4.1 material if it is offered for transportation and transported in accordance with the limitations and packaging requirements of 173.170 of this subchapter.

74      During transport, this material must be protected from direct sunshine and stored or kept in a cool and well-ventilated place, away from all sources of heat.

77      For domestic transportation, a Division 5.1 subsidiary risk label is required only if a carbon dioxide and oxygen mixture contains more than 23.5% oxygen.

78      This entry may not be used to describe compressed air which contains more than 23.5 percent oxygen. An oxidizer label is not required for any oxygen concentration of 23.5 percent or less.

79      This entry may not be used for mixtures that meet the definition for oxidizing gas.

81      Polychlorinated biphenyl items, as defined in 40 CFR 761.3, for which specification packagings are impractical, may be packaged in non-specification packagings meeting the general packaging requirements of subparts A and B of part 173 of this subchapter. Alternatively, the item itself may be used as a packaging if it meets the general packaging requirements of subparts A and B of part 173 of this subchapter.

101      The name of the particular substance or article must be specified.

102      The ends of the detonating cord must be tied fast so that the explosive cannot escape.The articles may be transported as in Division 1.4 Compatibility Group D (1.4D) if all of the conditions specified in 173.63(a) of this subchapter are met.

103      Detonators which will not mass detonate and undergo only limited propagation in the shipping package may be assigned to 1.4B classification code. Mass detonate means that more than 90 percent of the devices tested in a package explode practically simultaneously. Limited propagation means that if one detonator near the center of a shipping package is exploded, the aggregate weight of explosives, excluding ignition and delay charges, in this and all additional detonators in the outside packaging that explode may not exceed 25 grams.

105      The word "Agents" may be used instead of "Explosives" when approved by the Associate Administrator.

106      The recognized name of the particular explosive may be specified in addition to the type.

107      The classification of the substance is expected to vary especially with the particle size and packaging but the border lines have not been experimentally determined; appropriate classifications should be verified following the test procedures in 173.57 and 173.58 of this subchapter.

108      Fireworks must be so constructed and packaged that loose pyrotechnic composition will not be present in packages during transportation.

109      Rocket motors must be nonpropulsive in transportation unless approved in accordance with 173.56 of this subchapter. A rocket motor to be considered "nonpropulsive" must be capable of unrestrained burning and must not appreciably move in any direction when ignited by any means.

110      Fire extinguishers transported under UN1044 may include installed actuating cartridges (cartridges, power device of Division 1.4C or 1.4S), without changing the classification of Division 2.2, provided the aggregate quantity of deflagrating (propellant) explosives does not exceed 3.2 grams per extinguishing unit.

111      Explosive substances of Division 1.1 Compatibility Group A (1.1A) are forbidden for transportation if dry or not desensitized, unless incorporated in a device.

113      The sample must be given a tentative approval by an agency or laboratory in accordance with 173.56 of this subchapter.

114      Jet perforating guns, charged, oil well, without detonator may be reclassed to Division 1.4 Compatibility Group D (1.4D) if the following conditions are met:

a. The total weight of the explosive contents of the shaped charges assembled in the guns does not exceed 90.5 kg (200 pounds) per vehicle; and

b. The guns are packaged in accordance with Packing Method US 1 as specified in 173.62 of this subchapter.

115      Boosters with detonator, detonator assemblies and boosters with detonators in which the total explosive charge per unit does not exceed 25 g, and which will not mass detonate and undergo only limited propagation in the shipping package may be assigned to 1.4B classification code. Mass detonate means more than 90 percent of the devices tested in a package explode practically simultaneously. Limited propagation means that if one booster near the center of the package is exploded, the aggregate weight of explosives, excluding ignition and delay charges, in this and all additional boosters in the outside packaging that explode may not exceed 25 g.

116      Fuzes, detonating may be classed in Division 1.4 if the fuzes do not contain more than 25 g of explosive per fuze and are made and packaged so that they will not cause functioning of other fuzes, explosives or other explosive devices if one of the fuzes detonates in a shipping packaging or in adjacent packages.

117      If shipment of the explosive substance is to take place at a time that freezing weather is anticipated, the water contained in the explosive substance must be mixed with denatured alcohol so that freezing will not occur.

118      This substance may not be transported under the provisions of Division 4.1 unless specifically authorized by the Associate Administrator.

119      This substance, when in quantities of not more than 11.5 kg (25.3 pounds), with not less than 10 percent water, by mass, also may be classed in Division 4.1, provided a negative test result is obtained when tested in accordance with test series 6(c) of the UN Manual of Tests and Criteria.

120      The phlegmatized substance must be significantly less sensitive than dry PETN.

121      This substance, when containing less alcohol, water or phlegmatizer than specified, may not be transported unless approved by the Associate Administrator.

123      Any explosives, blasting, type C containing chlorates must be segregated from explosives containing ammonium nitrate or other ammonium salts.

125      Lactose or glucose or similar materials may be used as a phlegmatizer provided that the substance contains not less than 90%, by mass, of phlegmatizer. These mixtures may be classified in Division 4.1 when tested in accordance with test series 6(c) of the UN Manual of Tests and Criteria (see 171.7 of this subchapter) and approved by the Associate Administrator. Testing must be conducted on at least three packages as prepared for transport. Mixtures containing at least 98%, by mass, of phlegmatizer are not subject to the requirements of this subchapter. Packages containing mixtures with not less than 90% by mass, of phlegmatizer need not bear a POISON subsidiary risk label.

127      Mixtures containing oxidizing and organic materials transported under this entry may not meet the definition and criteria of a Class 1 material. (See 173.50 of this subchapter.)

128      Regardless of the provisions of 172.101(c)(12), aluminum smelting by-products and aluminum remelting by-products described under this entry, meeting the definition of Class 8, Packing Group II and III may be classed as a Division 4.3 material and transported under this entry. The presence of a Class 8 hazard must be communicated as required by this Part for subsidiary hazards.

129      These materials may not be classified and transported unless authorized by the Associate Administrator on the basis of results from Series 2 Test and a Series 6(c) Test from the UN Manual of Tests and Criteria (see 171.7 of this subchapter) on packages as prepared for transport. The packing group assignment and packaging must be approved by the Associate Administrator for Hazardous Materials Safety on the basis of the criteria in 173.21 of this subchapter and the package type used for the Series 6(c) test.

130      For other than a dry battery specifically covered by another entry in the 172.101 Table, "Batteries, dry" are not subject to the requirements of this subchapter when they are securely packaged and offered for transportation in a manner that prevents the dangerous evolution of heat (for example, by the effective insulation of exposed terminals) and protects against short circuits.

131      This material may not be offered for transportation unless approved by the Associate Administrator.

132      This entry may only be used for uniform, ammonium nitrate-based fertilizer mixtures, containing nitrogen, phosphate or potash, meeting the following criteria: (1) Contains not more than 70% ammonium nitrate; and (2) Contains not more than 0.4% total combustible, organic material calculated as carbon or with not more than 45% ammonium nitrate and unrestricted combustible material. Fertilizers within these composition limits are only subject to the requirements of this subchapter when transported by aircraft or vessel, and are not subject to the requirements of this subchapter if shown by a trough test, as specified in the UN Manual of Tests and Criteria, Part III, sub-section 38.2 (incorporated by reference; see 171.7 of this subchapter), not to be liable to self-sustaining decomposition.

134      This entry only applies to vehicles, machinery and equipment which are powered by wet batteries, sodium batteries, or lithium batteries and which are transported with these batteries installed. Examples of such items are electrically-powered cars, lawn mowers, wheelchairs and other mobility aids. A self-propelled vehicle which also contain an internal combustion engine must be consigned under the entry "Vehicle, flammable gas powered" or "Vehicle, flammable liquid powered", as appropriate.

135      The entries "Vehicle, flammable gas powered" or "Vehicle, flammable liquid powered", as appropriate, must be used when internal combustion engines are installed in a vehicle.

136      This entry only applies to machinery and apparatus containing hazardous materials as in integral element of the machinery or apparatus. It may not be used to describe machinery or apparatus for which a proper shipping name exists in the 172.101 Table. Except when approved by the Associate Administrator, machinery or apparatus may only contain hazardous materials for which exceptions are referenced in Column (8) of the 172.101 Table and are provided in part 173, subpart D, of this subchapter. Hazardous materials shipped under this entry are excepted from the labeling requirements of this subchapter unless offered for transportation or transported by aircraft and are not subject to the placarding requirements of part 172, subpart F, of this subchapter. Orientation markings as described in 172.312 (a)(2) are required when liquid hazardous materials may escape due to incorrect orientation. The machinery or apparatus, if unpackaged, or the packaging in which it is contained shall be marked "Dangerous goods in machinery" or "Dangerous goods in apparatus", as appropriate, with the identification number UN3363. For transportation by aircraft, machinery or apparatus may not contain any material forbidden for transportation by passenger or cargo aircraft. The Associate Administrator may except from the requirements of this subchapter, equipment, machinery and apparatus provided:
    a. It is shown that it does not pose a significant risk in transportation;

    b. The quantities of hazardous materials do not exceed those specified in 173.4 of this subchapter; and

    c. The equipment, machinery or apparatus conforms with 173.222 of this subchapter.

137      Cotton, dry is not subject to the requirements of this subchapter when it is baled in accordance with ISO 8115, " Cotton Bales -- Dimensions and Density " to a density of at least 360 kg/m 3 (22.4lb/ft 3) and it is transported in a freight container or closed transport vehicle.

138      Lead compounds which, when mixed in a ratio of 1:1000 with 0.07M (Molar concentration) hydrochloric acid and stirred for one hour at a temperature of 23 C 2 C, exhibit a solubility of 5% or less are considered insoluble.

139      Use of the "special arrangement" proper shipping names for international shipments must be made under an IAEA Certificate of Competent Authority issued by the Associate Administrator in accordance with the requirements in 173.471, 173.472, or 173.473 of this subchapter. Use of these proper shipping names for domestic shipments may be made only under a DOT exemption, as defined in, and in accordance with the requirements of subpart B of part 107 of this subchapter.

140      This material is regulated only when it meets the defining criteria for a hazardous substance or a marine pollutant. In addition, the column 5 reference is modified to read "III" on those occasions when this material is offered for transportation or transported by highway or rail.

141      A toxin obtained from a plant, animal, or bacterial source containing an infectious substance, or a toxin contained in an infectious substance, must be classed as Division 6.2, described as an infectious substance, and assigned to UN 2814 or UN 2900, as appropriate.

142      These hazardous materials may not be classified and transported unless authorized by the Associate Administrator. The Associate Administrator will base the authorization on results from Series 2 tests and a Series 6(c) test from the UN Manual of Tests and Criteria (see 171.7 of this subchapter) on packages as prepared for transport in accordance with the requirements of this subchapter.

143      These articles may contain:

a. Division 2.2 compressed gases, including oxygen;
    b. Signal devices (Class 1) which may include smoke and illumination signal flares. Signal devices must be packed in plastic or fiberboard inner packagings;

    c. Electric storage batteries;

    d. First aid kits; or

    e. Strike anywhere matches.

144      If transported as a residue in an underground storage tank (UST), as defined in 40 CFR 180.12, that has been cleaned and purged or rendered inert according to the American Petroleum Institute (API) Standard 1604 (incorporated by reference; see 171.7 of this subchapter), then the tank and this material are not subject to any other requirements of this subchapter. However, sediments remaining in the tank that meet the definition for a hazardous material are subject to the applicable regulations of this subchapter.

145      This entry applies to formulations that neither detonate in the cavitated state nor deflagrate in laboratory testing, show no effect when heated under confinement, exhibit no explosive power, and are thermally stable (self-accelerating decomposition temperature (SADT) at 60 C (140 F) or higher for a 50 kg (110.2 lbs.) package). Formulations not meeting these criteria must be transported under the provisions applicable to the appropriate entry in the Organic Peroxide Table in 173.225 of this subchapter.

146      This description may be used for a material that poses a hazard to the environment but does not meet the definition for a hazardous waste or a hazardous substance, as defined in 171.8 of this subchapter, or any hazard class as defined in Part 173 of this subchapter, if it is designated as environmentally hazardous by the Competent Authority of the country of origin, transit or destination.

147      This entry applies to non-sensitized emulsions, suspensions and gels consisting primarily of a mixture of ammonium nitrate and a fuel intended to produce a Type E blasting explosive only after further processing. The mixture typically has the following composition: 60 -- 85% ammonium nitrate; 5 -- 30% water; 2 -- 8% fuel; 0.5 -- 4% emulsifier or thickening agent; 0 -- 10% soluble flame suppressants; and trace additives. Other inorganic nitrate salts may replace part of the ammonium nitrate. These substances may not be classified and transported unless approved by the Associate Administrator.

149      When transported as a limited quantity or a consumer commodity, the maximum net capacity specified in 173.150(b)(2) of this subchapter for inner packagings may be increased to 5 L (1.3 gallons).

150      This description may be used only for uniform mixtures of fertilizers containing ammonium nitrate as the main ingredient within the following composition limits:
    a. Not less than 90% ammonium nitrate with not more than 0.2% total combustible, organic material calculated as carbon, and with added matter, if any, that is inorganic and inert when in contact with ammonium nitrate; or

    b. Less than 90% but more than 70% ammonium nitrate with other inorganic materials, or more than 80% but less than 90% ammonium nitrate mixed with calcium carbonate and/or dolomite, and not more than 0.4% total combustible, organic material calculated as carbon; or

    c. Ammonium nitrate-based fertilizers containing mixtures of ammonium nitrate and ammonium sulphate with more than 45% but less than 70% ammonium nitrate, and not more than 0.4% total combustible, organic material calculated as carbon such that the sum of the percentage of compositions of ammonium nitrate and ammonium sulphate exceeds 70%.

151      If this material meets the definition of a flammable liquid in 173.120 of this subchapter, a FLAMMABLE LIQUID label is also required and the basic description on the shipping paper must indicate the Class 3 subsidiary hazard.

153      The following applies to aerosols:
    a. Division 2.1 applies when the aerosol is flammable according to 173.306(i) of this subchapter.

    b. Division 2.2 applies when the contents of the aerosol do not meet the criteria for Division 2.1, or Division 2.3.

    c. Division 2.3 gases may not be used in an aerosol dispenser.

    d. When the contents are classified as Division 6.1 or Class 8, the aerosol must have a subsidiary risk of Division 6.1 or Class 8.

    e. Aerosols with contents meeting the criteria for PG I and PG II for Division 6.1 or Class 8 are forbidden for transportation.

    f. Aerosols must meet the definition of aerosols in 171.8 of this subchapter.

155      Fish meal or fish scrap may not be transported if the temperature at the time of loading either exceeds 35 C (95 F), or exceeds 5 C (41 F) above the ambient temperature, whichever is higher.

156      Asbestos that is immersed or fixed in a natural or artificial binder material, such as cement, plastic, asphalt, resins or mineral ore, or contained in manufactured products is not subject to the requirements of this subchapter.

157      This entry includes hybrid electric vehicles powered by both an internal combustion engine and wet, sodium or lithium batteries, transported with one or more batteries installed. Vehicles containing an internal combustion engine must be described as "Vehicle, flammable gas powered," UN3166, or "Vehicle, flammable liquid powered," UN3166, as appropriate.

159      This material must be protected from direct sunshine and kept in a cool, well-ventilated place away from sources of heat.

160      This entry applies to articles that are used as life-saving vehicle air bag inflators, air bag modules or seat-belt pretensioners containing Class 1 (explosive) materials or materials of other hazard classes. Air bag inflators and modules must be tested in accordance with Test series 6(c) of Part I of the UN Manual of Tests and Criteria (incorporated by reference; see 171.7 of this subchapter), with no explosion of the device, no fragmentation of device casing or pressure vessel, and no projection hazard or thermal effect that would significantly hinder fire-fighting or other emergency response efforts in the immediate vicinity. If the air bag inflator unit satisfactorily passes the series 6(c) test, it is not necessary to repeat the test on the air bag module.

161      For domestic transport, air bag inflators, air bag modules or seat belt pretensioners that meet the criteria for a Division 1.4G explosive must be transported using the description, "Articles, pyrotechnic for technical purposes," UN0431.

162      This material may be transported under the provisions of Division 4.1 only if it is packed so that at no time during transport will the percentage of diluent fall below the percentage that is stated in the shipping description.

(2) "A" codes. These provisions apply only to transportation by aircraft:

Code/Special Provisions

A1      Single packagings are not permitted on passenger aircraft.

A2      Single packagings are not permitted on aircraft.

A3      For combination packagings, if glass inner packagings (including ampoules) are used, they must be packed with absorbent material in tightly closed metal receptacles before packing in outer packagings.

A4      Liquids having an inhalation toxicity of Packing Group I are not permitted on aircraft.

A5      Solids having an inhalation toxicity of Packing Group I are not permitted on passenger aircraft and may not exceed a maximum net quantity per package of 15 kg (33 pounds) on cargo aircraft.

A6      For combination packagings, if plastic inner packagings are used, they must be packed in tightly closed metal receptacles before packing in outer packagings.

A7      Steel packagings must be corrosion-resistant or have protection against corrosion.

A8      For combination packagings, if glass inner packagings (including ampoules) are used, they must be packed with cushioning material in tightly closed metal receptacles before packing in outer packagings.

A9      For combination packagings, if plastic bags are used, they must be packed in tightly closed metal receptacles before packing in outer packagings.

A10      When aluminum or aluminum alloy construction materials are used, they must be resistant to corrosion.

A11      For combination packagings, when metal inner packagings are permitted, only specification cylinders constructed of metals which are compatible with the hazardous material may be used.

A13      Bulk packagings are not authorized for transportation by aircraft.

A19      Combination packagings consisting of outer fiber drums or plywood drums, with inner plastic packagings, are not authorized for transportation by aircraft.

A20      Plastic bags as inner receptacles of combination packagings are not authorized for transportation by aircraft.

A29      Combination packagings consisting of outer expanded plastic boxes with inner plastic bags are not authorized for transportation by aircraft.

A30      Ammonium permanganate is not authorized for transportation on aircraft.

A34      Aerosols containing a corrosive liquid in Packing Group II charged with a gas are not permitted for transportation by aircraft.

A35      This includes any material which is not covered by any of the other classes but which has an anesthetic, narcotic, noxious or other similar properties such that, in the event of spillage or leakage on an aircraft, extreme annoyance or discomfort could be caused to crew members so as to prevent the correct performance of assigned duties.

A37      This entry applies only to a material meeting the definition in 171.8 of this subchapter for self-defense spray.

A51      When transported by cargo-only aircraft, an oxygen generator must conform to the provisions of an approval issued under Special Provision 60 and be contained in a packaging prepared and originally offered for transportation by the approval holder.

A52      A cylinder containing Oxygen, compressed, may not be loaded into a passenger-carrying aircraft or in an inaccessible cargo location on a cargo-only aircraft unless it is placed in an overpack or outer packaging that conforms to the performance criteria of Air Transport Association (ATA) Specification 300 for Category I shipping containers.

A53      Refrigerating machines and refrigerating machine components are not subject to the requirements of this subchapter when containing less than 12 kg (26.4 pounds) of a non-flammable gas or when containing 12 L (3 gallons) or less of ammonia solution (UN2672) (see 173.307 of this subchapter).

A54      Lithium batteries or lithium batteries contained or packed with equipment that exceed the maximum gross weight allowed by Column (9B) of the 172.101 Table may only be transported on cargo aircraft if approved by the Associate Administrator.

A55      Prototype lithium batteries and cells that are packed with not more than 24 cells or 12 batteries per packaging that have not completed the test requirements in Sub-section 38.3 of the UN Manual of Tests and Criteria (incorporated by reference; see 171.7 of this subchapter) may be transported by cargo aircraft if approved by the Associate Administrator and provided the following requirements are met:
    a. The cells and batteries must be transported in rigid outer packagings that conform to the requirements of Part 178 of this subchapter at the Packing Group I performance level; and

    b. Each cell and battery must be protected against short circuiting, must be surrounded by cushioning material that is non-combustible and non-conductive, and must be individually packed in an inner packaging that is placed inside an outer specification packaging.

A56      Radioactive material with a subsidiary hazard of Division 4.2, Packing Group I, must be transported in Type B packages when offered for transportation by aircraft. Radioactive material with a subsidiary hazard of Division 2.1 is forbidden from transport on passenger aircraft.

A81      The quantity limits in columns (9A) and (9B) do not apply to body fluids known to contain or suspected of containing an infectious substance when transported in primary receptacles not exceeding 1,000 mL (34 ounces) and in outer packagings not exceeding 4 L (1 gallon) and packaged in accordance with 173.196 of this subchapter.

A82      The quantity limits in columns (9A) and (9B) do not apply to human or animal body parts, whole organs or whole bodies known to contain or suspected of containing an infectious substance.

(3) "B" codes. These provisions apply only to bulk packagings, other than IBCs:

Code/Special Provisions

B1      If the material has a flash point at or above 38 C (100 F) and below 93 C (200 F), then the bulk packaging requirements of 173.241 of this subchapter are applicable. If the material has a flash point of less than 38 C (100 F), then the bulk packaging requirements of 173.242 of this subchapter are applicable.

B2      MC 300, MC 301, MC 302, MC 303, MC 305, and MC 306 and DOT 406 cargo tanks are not authorized.

B3      MC 300, MC 301, MC 302, MC 303, MC 305, and MC 306 and DOT 406 cargo tanks and DOT 57 portable tanks are not authorized.

B4      MC 300, MC 301, MC 302, MC 303, MC 305, and MC 306 and DOT 406 cargo tanks are not authorized.

B5      Only ammonium nitrate solutions with 35 percent or less water that will remain completely in solution under all conditions of transport at a maximum lading temperature of 116 C (240 F) are authorized for transport in the following bulk packagings: MC 307, MC 312, DOT 407 and DOT 412 cargo tanks with at least 172 kPa (25 psig) design pressure. The packaging shall be designed for a working temperature of at least 121 C (250 F). Only Specifications MC 304, MC 307 or DOT 407 cargo tank motor vehicles are authorized for transportation by vessel.

B6      Packagings shall be made of steel.

B7      Safety relief devices are not authorized on multi-unit tank car tanks. Openings for safety relief devices on multi-unit tank car tanks shall be plugged or blank flanged.

B8      Packagings shall be made of nickel, stainless steel, or steel with nickel, stainless steel, lead or other suitable corrosion resistant metallic lining.

B9      Bottom outlets are not authorized.

B10      MC 300, MC 301, MC 302, MC 303, MC 305, and MC 306 and DOT 406 cargo tanks, and DOT 57 portable tanks are not authorized.

B11      Tank car tanks must have a test pressure of at least 2,068.5 kPa (300 psig). Cargo and portable tanks must have a design pressure of at least 1,207 kPa (175 psig).

B13      A nonspecification cargo tank motor vehicle authorized in 173.247 of this subchapter must be at least equivalent in design and in construction to a DOT 406 cargo tank or MC 306 cargo tank (if constructed before August 31, 1995), except as follows:
    a. Packagings equivalent to MC 306 cargo tanks are excepted from the certification, venting, and emergency flow requirements of the MC 306 specification.

    b. Packagings equivalent to DOT 406 cargo tanks are excepted from 178.345-7(d)(5), circumferential reinforcements; 178.345-10, pressure relief; 178.345-11, outlets; 178.345-14, marking, and 178.345-15, certification.

    c. Packagings are excepted from the design stress limits at elevated temperatures, as described in the ASME Code. However, the design stress limits may not exceed 25 percent of the stress, as specified in the Aluminum Association's "Aluminum Standards and Data" (7th Edition June 1982), for 0 temper at the maximum design temperature of the cargo tank.

B14      Each bulk packaging, except a tank car or a multi-unit-tank car tank, must be insulated with an insulating material so that the overall thermal conductance at 15.5 C (60 F) is no more than 1.5333 kilojoules per hour per square meter per degree Celsius (0.075 Btu per hour per square foot per degree Fahrenheit) temperature differential. Insulating materials must not promote corrosion to steel when wet.

B15      Packagings must be protected with non-metallic linings impervious to the lading or have a suitable corrosion allowance.

B16      The lading must be completely covered with nitrogen, inert gas or other inert materials.

B18      Open steel hoppers or bins are authorized.

B23      Tanks must be made of steel that is rubber lined or unlined. Unlined tanks must be passivated before being placed in service. If unlined tanks are washed out with water, they must be repassivated prior to return to service. Lading in unlined tanks must be inhibited so that the corrosive effect on steel is not greater than that of hydrofluoric acid of 65 percent concentration.
    B25      Packagings must be made from monel or nickel or monel-lined or nickel-lined steel.

    B26      Tanks must be insulated. Insulation must be at least 100 mm (3.9 inches) except that the insulation thickness may be reduced to 51 mm (2 inches) over the exterior heater coils. Interior heating coils are not authorized. The packaging may not be loaded with a material outside of the packaging's design temperature range. In addition, the material also must be covered with an inert gas or the container must be filled with water to the tank's capacity. After unloading, the residual material also must be covered with an inert gas or the container must be filled with water to the tank's capacity.

B27      Tanks must have a service pressure of 1,034 kPa (150 psig). Tank car tanks must have a test pressure rating of 1,379 kPa (200 psig). Lading must be blanketed at all times with a dry inert gas at a pressure not to exceed 103 kPa (15 psig).

B28      Packagings must be made of stainless steel.

B30      MC 312, MC 330, MC 331 and DOT 412 cargo tanks and DOT 51 portable tanks must be made of stainless steel, except that steel other than stainless steel may be used in accordance with the provisions of 173.24b(b) of this subchapter. Thickness of stainless steel for tank shell and heads for cargo tanks and portable tanks must be the greater of 7.62 mm (0.300 inch) or the thickness required for a tank with a design pressure at least equal to 1.5 times the vapor pressure of the lading at 46 C (115 F). In addition, MC 312 and DOT 412 cargo tank motor vehicles must:
    a. Be ASME Code (U) stamped for 100% radiography of all pressure-retaining welds;

    b. Have accident damage protection which conforms with 178.345-8 of this subchapter;

    c. Have a MAWP or design pressure of at least 87 psig: and

    d. Have a bolted manway cover.

B32      MC 312, MC 330, MC 331, DOT 412 cargo tanks and DOT 51 portable tanks must be made of stainless steel, except that steel other than stainless steel may be used in accordance with the provisions of 173.24b(b) of this subchapter. Thickness of stainless steel for tank shell and heads for cargo tanks and portable tanks must be the greater of 6.35 mm (0.250 inch) or the thickness required for a tank with a design pressure at least equal to 1.3 times the vapor pressure of the lading at 46 C (115 F). In addition, MC 312 and DOT 412 cargo tank motor vehicles must:

a. Be ASME Code (U) stamped for 100% radiography of all pressure-retaining welds;

b. Have accident damage protection which conforms with 178.345-8 of this subchapter;

c. Have a MAWP or design pressure of at least 87 psig; and

d. Have a bolted manway cover.

B33      MC 300, MC 301, MC 302, MC 303, MC 305, MC 306, and DOT 406 cargo tanks equipped with a 1 psig normal vent used to transport gasoline must conform to table 1 of this Special Provision. Based on the volatility class determined by using ASTM D439 and the Reid vapor pressure (RVP) of the particular gasoline, the maximum lading pressure and maximum ambient temperature permitted during the loading of gasoline may not exceed that listed in table I.

              Table I_Maximum Ambient Temperature_Gasoline
------------------------------------------------------------------------
                                            Maximum lading and ambient
       ASTM D439 volatility class            temperature (see note 1)
------------------------------------------------------------------------
A......................................  131 F
(RVP<=9.0 psia)
B......................................  124 F
(RVP<=10.0 psia)
C......................................  116 F
(RVP<=11.5 psia)
D......................................  107 F
(RVP<=13.5 psia)
E......................................  100 F
(RVP<=15.0 psia)
------------------------------------------------------------------------
 Note 1: Based on maximum lading pressure of 1 psig at top of cargo
  tank.

B35      Tank cars containing hydrogen cyanide may be alternatively marked "Hydrocyanic acid, liquefied" if otherwise conforming to marking requirements in subpart D of this part. Tank cars marked "HYDROCYANIC ACID" prior to October 1, 1991 do not need to be remarked.

B37      The amount of nitric oxide charged into any tank car tank may not exceed 1,379 kPa (200 psig) at 21 C (70 F).

B42      Tank cars must have a test pressure of 34.47 Bar (500 psig) or greater and conform to Class 105J. Each tank car must have a reclosing pressure relief device having a start-to-discharge pressure of 10.34 Bar (150 psig). The tank car specification may be marked to indicate a test pressure of 13.79 Bar (200 psig).

B44      All parts of valves and safety relief devices in contact with lading must be of a material which will not cause formation of acetylides.

B45      Each tank must have a reclosing combination pressure relief device equipped with stainless steel or platinum rupture discs approved by the AAR Tank Car Committee.

B46      The detachable protective housing for the loading and unloading valves of multi-unit tank car tanks must withstand tank test pressure and must be approved by the Associate Administrator.

B47      Each tank may have a reclosing pressure relief device having a start-to-discharge pressure setting of 310 kPa (45 psig).

B48      Portable tanks in sodium metal service may be visually inspected at least once every 5 years instead of being retested hydrostatically. Date of the visual inspection must be stenciled on the tank near the other required markings.

B49      Tanks equipped with interior heater coils are not authorized. Single unit tank car tanks must have a reclosing pressure relief device having a start-to-discharge pressure set at no more than 1551 kPa (225 psig).

B50      Each valve outlet of a multi-unit tank car tank must be sealed by a threaded solid plug or a threaded cap with inert luting or gasket material. Valves must be of stainless steel and the caps, plugs, and valve seats must be of a material that will not deteriorate as a result of contact with the lading.

B52      Notwithstanding the provisions of 173.24b of this subchapter, non-reclosing pressure relief devices are authorized on DOT 57 portable tanks.

B53      Packagings must be made of either aluminum or steel.

B54      Open-top, sift-proof rail cars are also authorized.

B55      Water-tight, sift-proof, closed-top, metal-covered hopper cars, equipped with a venting arrangement (including flame arrestors) approved by the Associate Administrator are also authorized.

B56      Water-tight, sift-proof, closed-top, metal-covered hopper cars are also authorized if the particle size of the hazardous material is not less than 149 microns.

B57      Class 115A tank car tanks used to transport chloroprene must be equipped with a non-reclosing pressure relief device of a diameter not less than 305 mm (12 inches) with a maximum rupture disc pressure of 310 kPa (45 psig).

B59      Water-tight, sift-proof, closed-top, metal-covered hopper cars are also authorized provided that the lading is covered with a nitrogen blanket.

B60      DOT Specification 106A500X multi-unit tank car tanks that are not equipped with a pressure relief device of any type are authorized. For the transportation of phosgene, the outage must be sufficient to prevent tanks from becoming liquid full at 55 C (130 F).

B61      Written procedures covering details of tank car appurtenances, dome fittings, safety devices, and marking, loading, handling, inspection, and testing practices must be approved by the Associate Administrator before any single unit tank car tank is offered for transportation.

B64      Each single unit tank car tank built after December 31, 1990 must be equipped with a tank head puncture resistance system that conforms to 179.16 of this subchapter.

B65      Tank cars must have a test pressure of 34.47 Bar (500 psig) or greater and conform to Class 105A. Each tank car must have a pressure relief device having a start-to-discharge pressure of 15.51 Bar (225 psig). The tank car specification may be marked to indicate a test pressure of 20.68 Bar (300 psig).

B66      Each tank must be equipped with gas tight valve protection caps. Outage must be sufficient to prevent tanks from becoming liquid full at 55 C (130 F). Specification 110A500W tanks must be stainless steel.

B67      All valves and fittings must be protected by a securely attached cover made of metal not subject to deterioration by the lading, and all valve openings, except safety valve, must be fitted with screw plugs or caps to prevent leakage in the event of valve failure.

B68      Sodium must be in a molten condition when loaded and allowed to solidify before shipment. Outage must be at least 5 percent at 98 C (208 F). Bulk packagings must have exterior heating coils fusion welded to the tank shell which have been properly stress relieved. The only tank car tanks authorized are Class DOT 105 tank cars having a test pressure of 2,069 kPa (300 psig) or greater.

B69      Dry sodium cyanide or potassium cyanide may be shipped in sift-proof weather-resistant metal covered hopper cars, covered motor vehicles, portable tanks or non-specification bins. Siftproof, water-resistant, fiberboard IBCs are permitted when transported in closed freight containers or transport vehicles. Bins must be approved by the Associate Administrator.

B70      If DOT 103ANW tank car tank is used: All cast metal in contact with the lading must have 96.7 percent nickel content; and the lading must be anhydrous and free from any impurities.

B71      Tank cars must have a test pressure of 20.68 Bar (300 psig) or greater and conform to Class 105, 112, 114 or 120.

B72      Tank cars must have a test pressure of 34.47 Bar (500 psig) or greater and conform to Class 105J, 106, or 110.

B74      Tank cars must have a test pressure of 20.68 Bar (300 psig) or greater and conform to Class 105S, 106, 110, 112J, 114J or 120S.

B76      Tank cars must have a test pressure of 20.68 Bar (300 psig) or greater and conform to Class 105S, 112J, 114J or 120S. Each tank car must have a reclosing pressure relief device having a start-to-discharge pressure of 10.34 Bar (150 psig). The tank car specification may be marked to indicate a test pressure of 13.79 Bar (200 psig).

B77      Other packaging are authorized when approved by the Associate Administrator.

B78      Tank cars must have a test pressure of 4.14 Bar (60 psig) or greater and conform to Class 103, 104, 105, 109, 111, 112, 114 or 120. Heater pipes must be of welded construction designed for a test pressure of 500 psig. A 25 mm (1 inch) woven lining of asbestos or other approved material must be placed between the bolster slabbing and the bottom of the tank. If a tank car tank is equipped with a non-reclosing pressure relief device, the rupture disc must be perforated with a 3.2 mm (0.13 inch) diameter hole. If a tank car tank is equipped with a reclosing pressure relief valve, the tank must also be equipped with a vacuum relief valve.

B80      Each cargo tank must have a minimum design pressure of 276 kPa (40 psig).

B81      Venting and pressure relief devices for tank car tanks and cargo tanks must be approved by the Associate Administrator.

B82      Cargo tanks and portable tanks are not authorized.

B83      Bottom outlets are prohibited on tank car tanks transporting sulfuric acid in concentrations over 65.25 percent.

B84      Packagings must be protected with non-metallic linings impervious to the lading or have a suitable corrosion allowance for sulfuric acid or spent sulfuric acid in concentration up to 65.25 percent.

B85      Cargo tanks must be marked with the name of the lading in accordance with the requirements of 172.302(b).

B90      Steel tanks conforming or equivalent to ASME specifications which contain solid or semisolid residual motor fuel antiknock mixture (including rust, scale, or other contaminants) may be shipped by rail freight or highway. The tank must have been designed and constructed to be capable of withstanding full vacuum. All openings must be closed with gasketed blank flanges or vapor tight threaded closures.

B115      Rail cars, highway trailers, roll-on/roll-off bins, or other non-specification bulk packagings are authorized. Packagings must be sift-proof, prevent liquid water from reaching the hazardous material, and be provided with sufficient venting to preclude dangerous accumulation of flammable, corrosive, or toxic gaseous emissions such as methane, hydrogen, and ammonia. The material must be loaded dry.

(4) Table 1, Table 2, and Table 3 -- IB Codes, Organic Peroxide IBC Code, and IP Special IBC Packing Provisions. These provisions apply only to transportation in IBCs. When no IBC code is assigned in the 172.101 Table for a specific proper shipping name, an IBC may be authorized when approved by the Associate Administrator. When only certain types of IBCs are authorized in Table 2 (IBC Code IB52), alternative types of IBCs may be authorized when approved by the Associate Administrator. The letter "Z" shown in the marking code for composite IBCs must be replaced with a capital code letter designation found in 178.702(a)(2) of this subchapter to specify the material used for the outer packaging. Tables 1, 2, and 3 follow:

                      Table 1_IB Codes (IBC Codes)
------------------------------------------------------------------------
        IBC Code                         Authorized IBCs
------------------------------------------------------------------------
IB1....................  Authorized IBCs: Metal (31A, 31B and 31N).
                         Additional Requirement: Only liquids with a
                          vapor pressure less than or equal to 110 kPa
                          at 50 C (1.1 bar at 122 F), or 130
                          kPa at55 C (1.3 bar at 131 F) are
                          authorized.
IB2....................  Authorized IBCs: Metal (31A, 31B and 31N);
                          Rigid plastics (31H1 and 31H2); Composite
                          (31HZ1).
                         Additional Requirement: Only liquids with a
                          vapor pressure less than or equal to 110 kPa
                          at 50 C (1.1 bar at 122 F), or
                          130kPa at 55 C (1.3 bar at 131 F)
                          are authorized.
IB3....................  Authorized IBCs: Metal (31A, 31B and 31N);
                          Rigid plastics (31H1 and 31H2); Composite
                          (31HZ1 and 31HA2, 31HB2, 31HN2, 31HD2 and
                          31HH2).
                         Additional Requirement: Only liquids with a
                          vapor pressure less than or equal to 110 kPa
                          at 50 C (1.1 bar at 122 F), or 130
                          kPa at 55 C (1.3 bar at 131 F) are
                          authorized, except for UN2672 (also see
                          Special Provision IP8 in Table 3 for UN2672).
IB4....................  Authorized IBCs: Metal (11A, 11B, 11N, 21A,
                          21B, 21N, 31A, 31B and 31N).
IB5....................  Authorized IBCs: Metal (11A, 11B, 11N, 21A,
                          21B, 21N, 31A, 31B and 31N); Rigid plastics
                          (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2);
                          Composite (11HZ1, 21HZ1 and 31HZ1).
IB6....................  Authorized IBCs: Metal (11A, 11B, 11N, 21A,
                          21B, 21N, 31A, 31B and 31N); Rigid plastics
                          (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2);
                          Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2, 31HZ1
                          and 31HZ2).
                         Additional Requirement: Composite IBCs 11HZ2
                          and 21HZ2 may not be used when the hazardous
                          materials being transported may become liquid
                          during transport.
IB7....................  Authorized IBCs: Metal (11A, 11B, 11N, 21A,
                          21B, 21N, 31A, 31B and 31N); Rigid plastics
                          (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2);
                          Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2, 31HZ1
                          and 31HZ2); Wooden (11C, 11D and 11F).
                         Additional Requirement: Liners of wooden IBCs
                          must be sift-proof.
IB8....................   Authorized IBCs: Metal (11A, 11B, 11N, 21A,
                          21B, 21N, 31A, 31B and 31N); Rigid plastics
                          (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2);
                          Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2, 31HZ1
                          and 31HZ2); Fiberboard (11G); Wooden (11C, 11D
                          and 11F); Flexible (13H1, 13H2, 13H3, 13H4,
                          13H5, 13L1, 13L2, 13L3, 13L4, 13M1 or 13M2).
IB99...................  IBCs are only authorized if approved by the
                          Associate Administrator.
------------------------------------------------------------------------

                                    Table 2_Organic Peroxide IBC Code (IB52)
----------------------------------------------------------------------------------------------------------------
                                                              Maximum
       UN No.          Organic peroxide     Type of IBC      quantity           Control            Emergency
                                                             (liters)         temperature         temperature
----------------------------------------------------------------------------------------------------------------
3109...............  ORGANIC PEROXIDE,
                      TYPE F, LIQUID
                     tert-Butyl           31A             1250
                      hydroperoxide, not
                      more than 72% with
                      water.
                     tert-Butyl           31A             1250
                      peroxyacetate, not  31HA1           1000
                      more than 32% in
                      diluent type A.
                     tert-Butyl peroxy-   31A             1250
                      3,5,5-              31HA1           1000
                      trimethylhexanoate
                      , not more than
                      32% in diluent
                      type A.
                     Cumyl                31HA1           1250
                      hydroperoxide, not
                      more than 90% in
                      diluent type A.
                     Dibenzoyl peroxide,  31H1            1000
                      not more than 42%
                      as a stable
                      dispersion.
                     Dicumyl peroxide,     31A            1250
                      less than or equal   31HA1          1000
                      to 100%.
                     Di-tert-butyl         31A            1250
                      peroxide, not more   31HA1          1000
                      than 52% on
                      diluent type B.
                     1,1-Di-(tert-        31H1            1000
                      butylperoxy)
                      cyclohexane, not
                      more than 42% in
                      diluent type A.
                     Dilauroyl peroxide,  31HA1           1000
                      not more than 42%,
                      stable dispersion,
                      in water.
                     Isopropyl cumyl      31HA1           1250
                      hydroperoxide, not
                      more than 72% in
                      diluent type A.
                     p-Menthyl            31HA1           1250
                      hydroperoxide, not
                      more than 72% in
                      diluent type A.
                     Peroxyacetic acid,   31H1            1500
                      stabilized, not     31HA1           1500
                      more than 17%.      31A             1500
                     Peroxyacetic acid,    31A            1500
                      with not more than   31HA1          1500
                      26% hydrogen
                      peroxide.
                     Peroxyacetic acid,    31A            1500
                      type F, stabilized.  31HA1          1500
3110...............  Organic peroxide     31A
                      type F, solid.      31H1
                                          31HA1
                     Dicumyl peroxide,     31A            2000
                      less than or equal
                      to 100%.
3119...............  ORGANIC PEROXIDE,
                      TYPE F, LIQUID,
                      TEMPERATURE
                      CONTROLLED
                     tert-Butyl peroxy-2- 31HA1           1000            +30 C         +35 C
                      ethylhexanoate,     31A             1250            +30 C         +35 C
                      not more than 32%
                      in diluent type B.
                     tert-Butyl           31A             1250            0 C           +10 C
                      peroxyneodecanoate
                      , not more than
                      32% in diluent
                      type A.
                     tert-Butyl           31A             1250            -5 C          +5 C
                      peroxyneodecanoate
                      , not more than
                      42% stable
                      dispersion, in
                      water.
                     tert-Butyl           31HA1           1000            +10 C         +15 C
                      peroxypivalate,     31A             1250            +10 C         +15 C
                      not more than 27%
                      in diluent type B.
                     Cumyl                31A             1250            -15 C         -5 C
                      peroxyneodecanoate
                      , not more than
                      52%, stable
                      dispersion, in
                      water.
                     Di-(4-tert-          31HA1           1000            +30 C         +35 C
                      butylcyclohexyl)
                      peroxydicarbonate,
                      not more than 42%,
                      stable dispersion,
                      in water.
                     Dicetyl              31HA1           1000            +30 C         +35 C
                      peroxydicarbonate,
                      not more than 42%,
                      stable dispersion,
                      in water.
                     Di-(2-ethylhexyl)    31A             1250            -20 C         -10 C
                      peroxydicarbonate,
                      not more than 52%,
                      stable dispersion,
                      in water.
                     Dimyristyl           31HA1           1000            +15 C         +20 C
                      peroxydicarbonate,
                      not more than 42%,
                      stable dispersion,
                      in water.
                     Di-(3,5,5-           31HA1           1000            +10 C         +15 C
                      trimethylhexanoyl)  31A             1250            +10 C         +15 C
                      peroxide, not more
                      than 38% in
                      diluent type A.
                     Di-(3,5,5-           31A             1250            +10 C         +15 C
                      trimethylhexanoyl)
                      peroxide, not more
                      than 52%, stable
                      dispersion, in
                      water.
                     1,1,3,3-             31A             1250            -5 C          +5 C
                      Tetramethylbutyl
                      peroxyneodecanoate
                      , not more than
                      52%, stable
                      dispersion, in
                      water.
----------------------------------------------------------------------------------------------------------------

                            Table 3_IP Codes
------------------------------------------------------------------------
 
-------------------------------------------------------------------------
IP1 IBCs must be packed in closed freight containers or a closed
 transport vehicle.
IP2 When IBCs other than metal or rigid plastics IBCs are used, they
 must be offered for transportation in a closed freight container or a
 closed transport vehicle.
IP3 Flexible IBCs must be sift-proof and water-resistant or must be
 fitted with a sift-proof and water-resistant liner.
IP4 Flexible, fiberboard or wooden IBCs must be sift-proof and water-
 resistant or be fitted with a sift-proof and water-resistant liner.
IP5 IBCs must have a device to allow venting. The inlet to the venting
 device must be located in the vapor space of the IBC under maximum
 filling conditions.
IP6 Non-specification bulk bins are authorized.
IP7 For UN identification numbers 1327, 1363, 1364, 1365, 1386, 1841,
 2211, 2217, 2793 and 3314, IBCs are not required to meet the IBC
 performance tests specified in part 178, subpart N of this subchapter.
IP8 Ammonia solutions may be transported in rigid or composite plastic
 IBCs (31H1, 31H2 and 31HZ1) that have successfully passed, without
 leakage or permanent deformation, the hydrostatic test specified in
  178.814 of this subchapter at a test pressure that is not less
 than 1.5 times the vapor pressure of the contents at 55 C (131
 F).
------------------------------------------------------------------------

(5) "N" codes. These provisions apply only to non-bulk packagings:

Code/Special Provisions

N3      Glass inner packagings are permitted in combination or composite packagings only if the hazardous material is free from hydrofluoric acid.

N4      For combination or composite packagings, glass inner packagings, other than ampoules, are not permitted.

N5      Glass materials of construction are not authorized for any part of a packaging which is normally in contact with the hazardous material.

N6      Battery fluid packaged with electric storage batteries, wet or dry, must conform to the packaging provisions of 173.159 (g) or (h) of this subchapter.

N7      The hazard class or division number of the material must be marked on the package in accordance with 172.302 of this subchapter. However, the hazard label corresponding to the hazard class or division may be substituted for the marking.

N8      Nitroglycerin solution in alcohol may be transported under this entry only when the solution is packed in metal cans of not more than 1 L capacity each, overpacked in a wooden box containing not more than 5 L. Metal cans must be completely surrounded with absorbent cushioning material. Wooden boxes must be completely lined with a suitable material impervious to water and nitroglycerin.

N10      Lighters and their inner packagings, which have been approved by the Associate Administrator (see 173.21(i) of this subchapter), must be packaged in one of the following outer packagings at the Packing Group II level: 4C1 or 4C2 wooden boxes; 4D plywood boxes; 4F reconstituted wood boxes; 4G fiberboard boxes; or 4H1 or 4H2 plastic boxes. The approval number (e.g., T-*    *    *) must be marked on each outer package and on the shipping paper.

N11      This material is excepted for the specification packaging requirements of this subchapter if the material is packaged in strong, tight non-bulk packaging meeting the requirements of subparts A and B of part 173 of this subchapter.

N12      Plastic packagings are not authorized.

N20      A 5M1 multi-wall paper bag is authorized if transported in a closed transport vehicle.

N25      Steel single packagings are not authorized.

N32      Aluminum materials of construction are not authorized for single packagings.

N33      Aluminum drums are not authorized.

N34      Aluminum construction materials are not authorized for any part of a packaging which is normally in contact with the hazardous material.

N36      Aluminum or aluminum alloy construction materials are permitted only for halogenated hydrocarbons that will not react with aluminum.

N37      This material may be shipped in an integrally-lined fiber drum (1G) which meets the general packaging requirements of subpart B of part 173 of this subchapter, the requirements of part 178 of this subchapter at the packing group assigned for the material and to any other special provisions of column 7 of the 172.101 table.

N40      This material is not authorized in the following packagings:
    a. A combination packaging consisting of a 4G fiberboard box with inner receptacles of glass or earthenware;

    b. A single packaging of a 4C2 sift-proof, natural wood box; or

    c. A composite packaging 6PG2 (glass, porcelain or stoneware receptacles within a fiberboard box).

N41      Metal construction materials are not authorized for any part of a packaging which is normally in contact with the hazardous material.

N42      1A1 drums made of carbon steel with thickness of body and heads of not less than 1.3 mm (0.050 inch) and with a corrosion-resistant phenolic lining are authorized for stabilized benzyl chloride if tested and certified to the Packing Group I performance level at a specific gravity of not less than 1.8.

N43      Metal drums are permitted as single packagings only if constructed of nickel or monel.

N45      Copper cartridges are authorized as inner packagings if the hazardous material is not in dispersion.

N65      Outage must be sufficient to prevent cylinders or spheres from becoming liquid full at 55 C (130 F). The vacant space (outage) may be charged with a nonflammable nonliquefied compressed gas if the pressure in the cylinder or sphere at 55 C (130 F) does not exceed 125 percent of the marked service pressure.

N72      Packagings must be examined by the Bureau of Explosives and approved by the Associate Administrator.

N73      Packagings consisting of outer wooden or fiberboard boxes with inner glass, metal or other strong containers; metal or fiber drums; kegs or barrels; or strong metal cans are authorized and need not conform to the requirements of part 178 of this subchapter.

N74      Packages consisting of tightly closed inner containers of glass, earthenware, metal or polyethylene, capacity not over 0.5 kg (1.1 pounds) securely cushioned and packed in outer wooden barrels or wooden or fiberboard boxes, not over 15 kg (33 pounds) net weight, are authorized and need not conform to the requirements of part 178 of this subchapter.

N75      Packages consisting of tightly closed inner packagings of glass, earthenware or metal, securely cushioned and packed in outer wooden barrels or wooden or fiberboard boxes, capacity not over 2.5 kg (5.5 pounds) net weight, are authorized and need not conform to the requirements of part 178 of this subchapter.

N76      For materials of not more than 25 percent active ingredient by weight, packages consisting of inner metal packagings not greater than 250 mL (8 ounces) capacity each, packed in strong outer packagings together with sufficient absorbent material to completely absorb the liquid contents are authorized and need not conform to the requirements of part 178 of this subchapter.

N77      For materials of not more than two percent active ingredients by weight, packagings need not conform to the requirements of part 178 of this subchapter, if liquid contents are absorbed in an inert material.

N78      Packages consisting of inner glass, earthenware, or polyethylene or other nonfragile plastic bottles or jars not over 0.5 kg (1.1 pounds) capacity each, or metal cans not over five pounds capacity each, packed in outer wooden boxes, barrels or kegs, or fiberboard boxes are authorized and need not conform to the requirements of part 178 of this subchapter. Net weight of contents in fiberboard boxes may not exceed 29 kg (64 pounds). Net weight of contents in wooden boxes, barrels or kegs may not exceed 45 kg (99 pounds).

N79      Packages consisting of tightly closed metal inner packagings not over 0.5 kg (1.1 pounds) capacity each, packed in outer wooden or fiberboard boxes, or wooden barrels, are authorized and need not conform to the requirements of part 178 of this subchapter. Net weight of contents may not exceed 15 kg (33 pounds).

N80      Packages consisting of one inner metal can, not over 2.5 kg (5.5 pounds) capacity, packed in an outer wooden or fiberboard box, or a wooden barrel, are authorized and need not conform to the requirements of part 178 of this subchapter.

N82      See 173.306 of this subchapter for classification criteria for flammable aerosols.

N83      This material may not be transported in quantities of more than 11.5 kg (25.4 lbs) per package.

N84      The maximum quantity per package is 500 g (1.1 lbs.).

N85      Packagings certified at the Packing Group I performance level may not be used.

(6) "R" codes. These provisions apply only to transportation by rail. [Reserved]

(7) "T" codes. (i) These provisions apply to the transportation of hazardous materials in UN and IM Specification portable tanks. Portable tank instructions specify the requirements applicable to a portable tank when used for the transportation of a specific hazardous material. These requirements must be met in addition to the design and construction specifications in part 178 of this subchapter. Portable tank instructions T1 through T22 specify the applicable minimum test pressure, the minimum shell thickness (in reference steel), bottom opening requirements and pressure relief requirements. In T23, the organic peroxides and self-reactive substances which are authorized to be transported in portable tanks are listed along with the applicable control and emergency temperatures. Liquefied compressed gases are assigned to portable tank instruction T50. T50 provides the maximum allowable working pressures, bottom opening requirements, pressure relief requirements and degree of filling requirements for liquefied compressed gases permitted for transport in portable tanks. Refrigerated liquefied gases which are authorized to be transported in portable tanks are specified in tank instruction T75.

(ii) The following table specifies the portable tank requirements applicable to T Codes T1 through T22. Column 1 specifies the T Code. Column 2 specifies the minimum test pressure, in bar (1 bar = 14.5 psig), at which the periodic hydrostatic testing required by 180.605 of this subchapter must be conducted. Column 3 specifies the section reference for minimum shell thickness or, alternatively, the minimum shell thickness value. Column 4 specifies the applicability of 178.275(g)(3) of this subchapter for the pressure relief devices. When the word "Normal" is indicated, 178.275(g)(3) of this subchapter does not apply. Column 5 references the applicable requirements for bottom openings in part 178 of this subchapter or references "Prohibited" which means bottom openings are prohibited. The table follows:

                                      Table of Portable Tank T Coder T1-T22
    [Portable tank code T1-T22 apply to liquid and solid hazardous materials of Classes 3 through 9 which are
                                         transported in portable tanks.]
----------------------------------------------------------------------------------------------------------------
                       Minimum test    Minimum shell thickness     Pressure-relief          Bottom opening
   Portable  tank        pressure      (in mm-reference steel)   requirements  (See   requirements  (See 
     instruction           (bar)       (See  178.274(d))    178.275(g))          178.275(d))
(1)                           (2)     (3)                        (4)...............  (5)
----------------------------------------------------------------------------------------------------------------
T1..................            1.5    178.274(d)(2)       Normal............   178.275(d)(2).
T2..................            1.5    178.274(d)(2)       Normal............   178.275(d)(3).
T3..................            2.65   178.274(d)(2)       Normal............   178.275(d)(2).
T4..................            2.65   178.274(d)(2)       Normal............   178.275(d)(3).
T5..................            2.65   178.274(d)(2)                     Prohibited.
                                                                  178.275(g)(3).
T6..................            4      178.274(d)(2)       Normal............   178.275(d)(2).
T7..................            4      178.274(d)(2)       Normal............   178.275(d)(3).
T8..................            4      178.274(d)(2)       Normal............  Prohibited.
T9..................            4     6 mm                       Normal............  Prohibited.
T10.................            4     6 mm                                     Prohibited.
                                                                  178.275(g)(3).
T11.................            6      178.274(d)(2)       Normal............   178.275(d)(3).
T12.................            6      178.274(d)(2)                      178.275(d)(3).
                                                                  178.275(g)(3).
T13.................            6     6 mm                       Normal............  Prohibited.
T14.................            6     6 mm                                     Prohibited.
                                                                  178.275(g)(3).
T15.................           10      178.274(d)(2)       Normal............   178.275(d)(3).
T16.................           10      178.274(d)(2)                      178.275(d)(3).
                                                                  178.275(g)(3).
T17.................           10     6 mm                       Normal............   178.275(d)(3).
T18.................           10     6 mm                                      178.275(d)(3).
                                                                  178.275(g)(3).
T19.................           10     6 mm                                     Prohibited.
                                                                  178.275(g)(3).
T20.................           10     8 mm                                     Prohibited.
                                                                  178.275(g)(3).
T21.................           10     10 mm                      Normal............  Prohibited.
T22.................           10     10 mm                                    Prohibited.
                                                                  178.275(g)(3).
----------------------------------------------------------------------------------------------------------------

(iii) The following table specifies the portable tank requirements applicable to T23 for self-reactive substances of Division 4.1 and organic peroxides of Division 5.2 which are authorized to be transported in portable tanks:

                                                                 Portable Tank Code T23
                   [Portable tank code T23 applies to self-reactive substances of Division 4.1 and organic peroxides of Division 5.2.]
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                 Minimum     Minimum shell
                Hazardous         test       thickness (mm-     Bottom opening    Pressure-relief                          Control          Emergency
  UN No.         material       pressure    reference steel)   requirements See   requirements See   Filling limits     tempereature       temperature
                                  (bar)        See . . .            . . .              . . .
--------------------------------------------------------------------------------------------------------------------------------------------------------
3109        Organic peroxide,           4                                         Not more than
             Type F, liquid                 178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
                                                                                                     F (15
                                                                                                     C)
            tert-Butyl                  4                                         Not more than
             hydroperoxide,                 178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             not more than                                                                           F (15
             72% with water.                                                                         C)
             *Provided that
             steps have been
             taken to achieve
             the safety
             equivalence of
             65% tert-Butyl
             hydroperoxide
             and 35% water
            Cumyl hydro-                4                                         Not more than
             peroxide, not                  178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             more than 90% in                                                                        F (15
             diluent type A                                                                          C)
            Dicumyl peroxide,           4                                         Not more than
             less than or                   178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             equal to 100% in                                                                        F (15
             diluent Type B                                                                          C)
            Di-tert-butyl               4                                         Not more than
             peroxide, not                  178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             more than 32% in                                                                        F (15
             diluent type A                                                                          C)
            Isopropyl cumyl             4                                         Not more than
             hydro-peroxide,                178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             not more than                                                                           F (15
             72% in diluent                                                                          C)
             type A
            p-Menthyl hydro-            4                                         Not more than
             peroxide, not                  178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             more than 72% in                                                                        F (15
             diluent type A                                                                          C)
            Pinanyl hydro-              4                                         Not more than
             peroxide, not                  178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             more than 50% in                                                                        F (15
             diluent type A                                                                          C)
--------------------------------------------------------------------------------------------------------------------------------------------------------
3110        Organic peroxide,           4                                         Not more than
             Type F, solid                  178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
                                                                                                     F (15
                                                                                                     C)
             Dicumyl peroxide           4                                         Not more than
             less than r                    178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             equal to 100%                                                                           F (15
             with inert                                                                              C)
             solids
--------------------------------------------------------------------------------------------------------------------------------------------------------
            Maximum quantity
             per portable
             tank 2,000 kg
3119        Organic peroxide,           4                                         Not more than     As approved by    As approved by
             Type F, liquid,                178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59         Assoc. Admin.     Assoc. Admin.
             temperature                                                                             F (15
             controlled                                                                              C)
            tert-Butyl                  4                                         Not more than     +30 C       +35 C
             peroxyacetate,                 178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             not more than                                                                           F (15
             32% in diluent                                                                          C)
             Type B
            tert-Butyl peroxy-          4                                         Not more than     +15 C       +20 C
             2-                             178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             ethylhexanoate,                                                                         F (15
             not more than                                                                           C)
             32% in diluent
             type B
            tert-Butyl                  4                                         Not more than     +5 C        +10 C
             peroxypivalate,                178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             not more than                                                                           F (15
             27% in diluent                                                                          C)
             Type B
            tert-Butyl peroxy-          4                                         Not more than     +35 C       +40 C
             3,5,5-trimethyl-               178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             hexanoate, not                                                                          F (15
             more than 32% in                                                                        C)
             dileunt type B
            Di-(3,5,5-                  4                                         Not more than     0 C         +5 C
             trimethyl-                     178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             hexanoyl)                                                                               F (15
             peroxide, not                                                                           C)
             more htan 38% in
             diluent type A
            Peroxyacetic                4                                         Not more than     +30 C       +35 C
             acid, distilled,               178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
             stabilized, not                                                                         F (15
             more than 41%                                                                           C)
--------------------------------------------------------------------------------------------------------------------------------------------------------
3120         Organic peroxide           4                                         Not more than     As approved by    As approved by
             Type F, solid,                 178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59         Assoc. Admin      Assoc. Admin
             temperature                                                                             F (15
             controlled                                                                              C)
--------------------------------------------------------------------------------------------------------------------------------------------------------
3229        Self-reactive               4                                         Not more than
             liquid Type F                  178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
                                                                                                     F (15
                                                                                                     C)
--------------------------------------------------------------------------------------------------------------------------------------------------------
3230        Self-reactive               4                                         Not more than
             solid Type F                   178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59
                                                                                                     F (15
                                                                                                     C)
--------------------------------------------------------------------------------------------------------------------------------------------------------
3239        Self-reactive               4                                         Not more than     As approved by    As approved by
             liquid Type F,                 178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59         Assoc. Admin.     Assoc. Admin.
             temperature                                                                             F (15
             controlled                                                                              C)
--------------------------------------------------------------------------------------------------------------------------------------------------------
3240        Self-reactive               4                                         Not more than     As approved by    As approved by
             solid Type F,                  178.274(d)(2)      178.275(d)(3)      178.275(g)(1)      90% at 59         Assoc. Admin.     Assoc. Admin.
             temperature                                                                             F (15
             controlled                                                                              C)
--------------------------------------------------------------------------------------------------------------------------------------------------------

(iv) The following portable tank instruction applies to portable tanks used for the transportation of liquefied compressed gases. The T50 table provides the UN identification number and proper shipping name for each liquefied compressed gas authorized to be transported in a T50 portable tank. The table provides maximum allowable working pressures, bottom opening requirements, pressure relief device requirements and degree of filling requirements for each liquefied compressed gases permitted for transportation in a T50 portable tank. In the minimum test pressure column, "small" means a portable tank with a diameter of 1.5 meters or less when measured at the widest part of the shell, "sunshield" means a portable tank with a shield covering at least the upper third of the shell, "bare" means no sunshield or insulation is provided, and "insulated" means a complete cladding of sufficient thickness of insulating material necessary to provide a minimum conductance of not more than 0.67 w/m2/k. In the pressure relief requirements column, the word "Normal" denotes that a frangible disc as specified in 178.276(e)(3) of this subchapter is not required. The T50 table follows:

                                             Portable Tank Code T50
                         [Portable tank code T50 applies to liquefied compressed gases.]
----------------------------------------------------------------------------------------------------------------
                                    Max. allowable
                Non-refrigerated   working pressure                         Pressure relief
    UN No.         liquefied      (bar) small; bare;    Openings below     requirements (see   Maximum  filling
                compressed gases      sunshield;         liquid level       178.27(e))    density  (kg/l)
                                       insulated
----------------------------------------------------------------------------------------------------------------
1005.........  Ammonia,           29.0..............  Allowed...........                0.53
                anhydrous.        25.7..............                       178.276(e)(3).
                                  22.0..............
                                  19.7..............
----------------------------------------------------------------------------------------------------------------
1009.........  Bromotrifluoromet  38.0..............  Allowed...........  Normal............  1.13
                hane or           34.0..............
                Refrigerant gas   30.0..............
                R 13B1.           27.5..............
----------------------------------------------------------------------------------------------------------------
1010.........  Butadienes,        7.5...............  Allowed...........  Normal............  0.55
                stabilized.       7.0...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1011.........  Butane...........  7.0...............  Allowed...........  Normal............  0.51
                                  7.0...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1012.........  Butylene.........  8.0...............  Allowed...........  Normal............  0.53
                                  7.0...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1017.........  Chlorine.........  19.0..............  Not Allowed.......                1.25
                                  17.0..............                       178.276(e)(3).
                                  15.0..............
                                  13.5..............
----------------------------------------------------------------------------------------------------------------
1018.........  Chlorodifluoromet  26.0..............  Allowed...........  Normal............  1.03
                hane or           24.0..............
                Refrigerant gas   21.0..............
                R 22.             19.0..............
----------------------------------------------------------------------------------------------------------------
1020.........  Chloropentafluoro  23.0..............  Allowed...........  Normal............  1.06
                ethane or         20.0..............
                Refrigerant gas   18.0..............
                R 115.            16.0..............
----------------------------------------------------------------------------------------------------------------
1021.........  1-Chloro-1,2,2,2-  10.3..............  Allowed...........  Normal............  1.2
                tetrafluoroethan  9.8...............
                e or Refrigerant  7.9...............
                gas R 124.        7.0...............
----------------------------------------------------------------------------------------------------------------
1027.........  Cyclopropane.....  18.0..............  Allowed...........  Normal............  0.53
                                  16.0..............
                                  14.5..............
                                  13.0..............
----------------------------------------------------------------------------------------------------------------
1028.........  Dichlorodifluorom  16.0..............  Allowed...........  Normal............  1.15
                ethane or         15.0..............
                Refrigerant gas   13.0..............
                R 12.             11.5..............
----------------------------------------------------------------------------------------------------------------
1029.........  Dichlorofluoromet  7.0...............  Allowed...........  Normal............  1.23
                hane or           7.0...............
                Refrigerant gas   7.0...............
                R 21.             7.0...............
----------------------------------------------------------------------------------------------------------------
1030.........  1,1-               16.0..............  Allowed...........  Normal............  0.79
                Difluoroethane    14.0..............
                or Refrigerant    12.4..............
                gas R 152a.       11.0..............
----------------------------------------------------------------------------------------------------------------
1032.........  Dimethylamine,     7.0...............  Allowed...........  Normal............  0.59
                anhydrous.        7.0...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1033.........  Dimethyl ether...  15.5..............  Allowed...........  Normal............  0.58
                                  13.8..............
                                  12.0..............
                                  10.6..............
----------------------------------------------------------------------------------------------------------------
1036.........  Ethylamine.......  7.0...............  Allowed...........  Normal............  0.61
                                  7.0...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1037.........  Ethyl chloride...  7.0...............  Allowed...........  Normal............  0.8
                                  7.0...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1040.........  Ethylene oxide     Only authorized in  Not allowed.......                0.78
                with nitrogen up   10 bar                                  178.276(e)(3).
                to a total         insulatedportable
                pressure of 1MPa   tanks.
                (10 bar) at 50
                C.
----------------------------------------------------------------------------------------------------------------
1041.........  Ethylene oxide     See MAWP            Allowed...........  Normal............  See 
                and carbon         defination in                                               173.32(f)
                dioxide mixture     178.276(a).
                with more than
                9% butnot more
                than 87%
                ethylene oxide.
----------------------------------------------------------------------------------------------------------------
1055.........  Isobutylene......  8.1...............  Allowed...........  Normal............  0.52
                                  7.0...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1060.........  Methyl acetylene   28.0..............  Allowed...........  Normal............  0.43
                and propadiene    24.5..............
                mixture,          22.0..............
                stabilized.       20.0..............
----------------------------------------------------------------------------------------------------------------
1061.........  Methylamine,       10.8..............  Allowed...........  Normal............  0.58
                anhydrous.        9.6...............
                                  7.8...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1062.........  Methyl bromide...  7.0...............  Not allowed.......                1.51
                                  7.0...............                       178.276(e)(3).
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1063.........  Methyl chloride    14.5..............  Allowed...........  Normal............  0.81
                or Refrigerant    12.7..............
                gas R 40.         11.3..............
                                  10.0..............
----------------------------------------------------------------------------------------------------------------
1064.........  Methyl mercaptan.  7.0...............  Not allowed.......                0.78
                                  7.0...............                       178.276(e)(3).
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1067.........  Dinitrogen         7.0...............  Not allowed.......                1.3
                tetroxide.        7.0...............                       178.276(e)(3).
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1075.........  Petroleum gas,     See MAWP            Allowed...........  Normal............  See 
                liquefied.         definition in                                               173.32(f)
                                    178.276(a).
----------------------------------------------------------------------------------------------------------------
1077.........  Propylene........  28.0..............  Allowed...........  Normal............  0.43
                                  24.5..............
                                  22.0..............
                                  20.0..............
----------------------------------------------------------------------------------------------------------------
1078.........  Refrigerant gas,   See MAWP            Allowed...........  Normal............  See 
                n.o.s..            definition in                                               173.32(f)
                                    178.276(a).
----------------------------------------------------------------------------------------------------------------
1079.........  Sulphur dioxide..  11.6..............  Not allowed.......                1.23
                                  10.3..............                       178.276(e)(3).
                                  8.5...............
                                  7.6...............
----------------------------------------------------------------------------------------------------------------
1082.........  Trifluorochloroet  17.0..............  Not allowed.......                1.13
                hylene,           15.0..............                       178.276(e)(3).
                stabilized or     13.1..............
                Refrigerant gas   11.6..............
                R 1113.
----------------------------------------------------------------------------------------------------------------
1083.........  Trimethylamine,    7.0...............  Allowed...........  Normal............  0.56
                anhydrous.        7.0...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1085.........  Vinyl bromide,     7.0...............  Allowed...........  Normal............  1.37
                stabilized.       7.0...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1086.........  Vinyl chloride,    10.6..............  Allowed...........  Normal............  0.81
                stabilized.       9.3...............
                                  8.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1087.........  Vinyl methyl       7.0...............  Allowed...........  Normal............  0.67
                ether,            7.0...............
                stabilized.       7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1581.........  Chloropicrin and   7.0...............  Not Allowed.......                1.51
                methyl bromide    7.0...............                       178.276(e)(3).
                mixture.          7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1582.........  Chloropicrin and   19.2..............  Not allowed.......                0.81
                methyl chloride   16.9..............                       178.276(e)(3).
                mixture.          15.1..............
                                  13.1..............
----------------------------------------------------------------------------------------------------------------
1858.........  Hexafluoropropyle  19.2..............  Allowed...........  Normal............  1.11
                ne compressed or  16.9..............
                Refrigerant gas   15.1..............
                R 1216.           13.1..............
----------------------------------------------------------------------------------------------------------------
1912.........  Methyl chloride    15.2, 13.0, 11.6,   Allowed...........  Normal............  0.81
                and methylene      10.1.
                chloride mixture.
NA 1954......  Insecticide        See MAWP            Allowed...........  Normal............   173.32(f)
                gases,             definition in
                flammable,          178.276(a).
                n.o.s..
----------------------------------------------------------------------------------------------------------------
1958.........  1,2-Dichloro-      7.0...............  Allowed...........  Normal............  1.3
                1,1,2,2-          7.0...............
                tetrafluoroethan  7.0...............
                e or Refrigerant  7.0...............
                gas R 114.
----------------------------------------------------------------------------------------------------------------
1965.........  Hydrocarbon gas,   See MAWP            Allowed...........  Normal............  See 
                mixture            definition in                                               173.32(f)
                liquefied,         178.276(a).
                n.o.s..
----------------------------------------------------------------------------------------------------------------
1969.........  Isobutane........  8.5...............  Allowed...........  Normal............  0.49
                                  7.5...............
                                  7.0...............
                                  7.0...............
----------------------------------------------------------------------------------------------------------------
1973.........  Chlorodifluoromet  28.3..............  Allowed...........  Normal............  1.05
                hane and          25.3..............
                chloropentafluor  22.8..............
                oethane mixture   20.3..............
                with fixed
                boiling point,
                withapproximatel
                y 49%
                chlorodifluorome
                thane or
                Refrigerant gas
                R502.
----------------------------------------------------------------------------------------------------------------
1974.........  Chlorodifluorobro  7.4...............  Allowed...........  Normal............  1.61
                momethane or      7.0...............
                Refrigerant gas   7.0...............
                R 12B1.           7.0...............
----------------------------------------------------------------------------------------------------------------
1976.........  Octafluorocyclobu  8.8...............  Allowed...........  Normal............  1.34
                tane or           7.8...............
                Refrigerant gas   7.0...............
                RC 318.           7.0...............
----------------------------------------------------------------------------------------------------------------
1978.........  Propane..........  22.5..............  Allowed...........  Normal............  0.42
                                  20.4..............
                                  18.0..............
                                  16.5..............
----------------------------------------------------------------------------------------------------------------
1983.........  1-Chloro-2,2,2-    7.0...............  Allowed...........  Normal............  1.18
                trifluoroethane   7.0...............
                or Refrigerant    7.0...............
                gas R 133a.       7.0...............
----------------------------------------------------------------------------------------------------------------
2035.........  1,1,1-             31.0..............  Allowed...........  Normal............  0.76
                Trifluoroethane   27.5..............
                compressed or     24.2..............
                Refrigerant gas   21.8..............
                R 143a.
----------------------------------------------------------------------------------------------------------------
2424.........  Octafluoropropane  23.1..............  Allowed...........  Normal............  1.07
                or Refrigerant    20.8..............
                gas R 218.        18.6..............
                                  16.6..............
----------------------------------------------------------------------------------------------------------------
2517.........  1-Chloro-1,1-      8.9...............  Allowed...........  Normal............  0.99
                difluoroethane    7.8...............
                or Refrigerant    7.0...............
                gas R 142b.       7.0...............
----------------------------------------------------------------------------------------------------------------
2602.........  Dichlorodifluorom  20.0..............  Allowed...........  Normal............  1.01
                ethane and        18.0..............
                difluoroethane    16.0..............
                azeotropic        14.5..............
                mixture with
                approximately
                74%
                dichlorodifluoro
                methane or
                Refrigerant gas
                R 500.
----------------------------------------------------------------------------------------------------------------
3057.........  Trifluoroacetyl    14.6..............  Not allowed.......                1.17
                chloride.         12.9..............                       178.276(e)(3).
                                  11.3..............
                                  9.9...............
----------------------------------------------------------------------------------------------------------------
3070.........  Ethylene oxide     14.0..............  Allowed...........                1.09
                and               12.0..............                       178.276(e)(3).
                dichlorodifluoro  11.0..............
                methane mixture   9.0...............
                with not more
                than 12.5%
                ethylene oxide.
----------------------------------------------------------------------------------------------------------------
3153.........  Perfluoro (methyl  14.3..............  Allowed...........  Normal............  1.14
                vinyl ether).     13.4..............
                                  11.2..............
                                  10.2..............
----------------------------------------------------------------------------------------------------------------
3159.........  1,1,1,2-           17.7..............  Allowed...........  Normal............  1.04
                Tetrafluoroethan  15.7..............
                e or Refrigerant  13.8..............
                gas R 134a.       12.1..............
----------------------------------------------------------------------------------------------------------------
3161.........  Liquefied gas,     See MAWP            Allowed...........  Normal............   173.32(f)
                flammable,         definition in
                n.o.s..             178.276(a).
----------------------------------------------------------------------------------------------------------------
3163.........  Liquefied gas,     See MAWP            Allowed...........  Normal............   173.32(f)
                n.o.s..            definition in
                                    178.276(a).
----------------------------------------------------------------------------------------------------------------
3220.........  Pentafluoroethane  34.4..............  Allowed...........  Normal............  0.95
                or Refrigerant    30.8..............
                gas R 125.        27.5..............
                                  24.5..............
----------------------------------------------------------------------------------------------------------------
3252.........  Difluoromethane    43.0..............  Allowed...........  Normal............  0.78
                or Refrigerant    39.0..............
                gas R 32.         34.4..............
                                  30.5..............
----------------------------------------------------------------------------------------------------------------
3296.........  Heptafluoropropan  16.0..............  Allowed...........  Normal............  1.2
                e or Refrigerant  14.0..............
                gas R 227.        12.5..............
                                  11.0..............
----------------------------------------------------------------------------------------------------------------
3297.........  Ethylene oxide     8.1...............  Allowed...........  Normal............  1.16
                and               7.0...............
                chlorotetrafluor  7.0...............
                oethane mixture,  7.0...............
                with not more
                than 8.8%
                ethylene oxide.
----------------------------------------------------------------------------------------------------------------
3298.........  Ethylene oxide     25.9..............  Allowed...........  Normal............  1.02
                and               23.4..............
                pentafluoroethan  20.9..............
                e mixture, with   18.6..............
                not more than
                7.9% ethylene
                oxide.
----------------------------------------------------------------------------------------------------------------
3299.........  Ethylene oxide     16.7..............  Allowed...........  Normal............  1.03
                and               14.7..............
                tetrafluoroethan  12.9..............
                e mixture, with   11.2..............
                not more than
                5.6% ethylene
                oxide.
----------------------------------------------------------------------------------------------------------------
3318.........  Ammonia solution,  See MAWP            Allowed...........                 173.32(f)
                relative density   definition in                           178.276(e)(3).
                less than 0.880    178.276(a).
                at 15 C in
                water, with more
                than 50% ammonia.
----------------------------------------------------------------------------------------------------------------
3337.........  Refrigerant gas R  31.6..............  Allowed...........  Normal............  0.84
                404A.             28.3..............
                                  25.3..............
                                  22.5..............
----------------------------------------------------------------------------------------------------------------
3338.........  Refrigerant gas R  31.3..............  Allowed...........  Normal............  0.95
                407A.             28.1..............
                                  25.1..............
                                  22.4..............
----------------------------------------------------------------------------------------------------------------
3339.........  Refrigerant gas R  33.0..............  Allowed...........  Normal............  0.95
                407B.             29.6..............
                                  26.5..............
                                  23.6..............
----------------------------------------------------------------------------------------------------------------
3340.........  Refrigerant gas R  29.9..............  Allowed...........  Normal............  0.95
                407C.             26.8..............
                                  23.9..............
                                  21.3..............
----------------------------------------------------------------------------------------------------------------

(v) When portable tank instruction T75 is referenced in Column (7) of the 172.101 Table, the applicable refrigerated liquefied gases are authorized to be transported in portable tanks in accordance with the requirements of 178.277 of this subchapter.

(vi) UN and IM portable tank codes/special provisions. When a specific portable tank instruction is specified by a T Code in Column (7) of the 172.101 Table for a specific hazardous material, a Specification portable tank conforming to an alternative tank instruction may be used if:

(A) the alternative portable tank has a higher or equivalent test pressure (for example, 4 bar when 2.65 bar is specified);

(B) the alternative portable tank has greater or equivalent wall thickness (for example, 10 mm when 6 mm is specified);

(C) the alternative portable tank has a pressure relief device as specified in the T Code. If a frangible disc is required in series with the reclosing pressure relief device for the specified portable tank, the alternative portable tank must be fitted with a frangible disc in series with the reclosing pressure relief device; and

(D) With regard to bottom openings --

(1) When two effective means are specified, the alternative portable tank is fitted with bottom openings having two or three effective means of closure or no bottom openings; or

(2) When three effective means are specified, the portable tank has no bottom openings or three effective means of closure; or

(3) When no bottom openings are authorized, the alternative portable tank must ot have bottom openings.

(vii) When a hazardous material is not assigned a portable tank T Code or TP 9 is referenced in Column (7) of the 172.101 Table, the hazardous material may only be transported in a portable tank if approved by the Associate Administrator.

(viii) Portable tank special provisions are assigned to certain hazardous materials to specify requirements that are in addition to those provided by the portable tank instructions or the requirements in part 178 of this subchapter. Portable tank special provisions are designated with the abbreviation TP (tank provision) and are assigned to specific hazardous materials in Column (7) of the 172.101 Table. The following is a list of the portable tank special provisions:

Code/Special Provisions

TP1      The maximum degree of filling must not exceed the degree of filling determined by the following:

Where:

tr is the maximum mean bulk temperature during transport, and tf is the temperature in degrees celsius of the liquid during filling.

TP2      a. The maximum degree of filling must not exceed the degree of filling determined by the following:

Where:

tr is the maximum mean bulk temperature during transport,

tf is the temperature in degrees celsius of the liquid during filling, and

α is the mean coefficient of cubical expansion of the liquid between the mean temperature of the liquid during filling (tf) and the maximum mean bulk temperature during transportation (tr) both in degrees celsius.

b. For liquids transported under ambient conditions α may be calculated using the formula:

Where:

d15 and d50 are the densities (in units of mass per unit volume) of the liquid at 15 C (59 F) and 50 C (122 F), respectively.

TP3      For materials transported under elevated temperatures, the maximum degree of filling is determined by the following:

Where:

dt is the density of the material at the maximum mean bulk temperature during transport; and

df is the density of the material at the temperature in degrees celsius of the material during filling; and

TP4      The maximum degree of filling for portable tanks must not exceed 90%.

TP5      For a portable tank used for the transport of flammable refrigerated liquefied gases or refrigerated liquefied oxygen, the maximum rate at which the portable tank may be filled must not exceed the liquid flow capacity of the primary pressure relief system rated at a pressure not exceeding 120 percent of the portable tank's design pressure. For portable tanks used for the transport of refrigerated liquefied helium and refrigerated liquefied atmospheric gas (except oxygen), the maximum rate at which the tank is filled must not exceed the liquid flow capacity of the pressure relief device rated at 130 percent of the portable tank's design pressure. Except for a portable tank containing refrigerated liquefied helium, a portable tank shall have an outage of at least two percent below the inlet of the pressure relief device or pressure control valve, under conditions of incipient opening, with the portable tank in a level attitude. No outage is required for helium.

TP6      To prevent the tank from bursting in an event, including fire engulfment (the conditions prescribed in CGA pamphlet S-1.2 (see 171.7 of this subchapter) may be used to consider the fire engulfment condition), it must be equipped with pressure relief devices that are adequate in relation to the capacity of the tank and the nature of the hazardous material transported.

TP7      The vapor space must be purged of air by nitrogen or other means.

TP8      A portable tank having a minimum test pressure of 1.5 bar (150 kPa) may be used when the flash point of the hazardous material transported is greater than 0 C (32 F).

TP9      A hazardous material assigned to special provision TP9 in Column (7) of the 172.101 Table may only be transported in a portable tank if approved by the Associate Administrator.

TP10      The portable tank must be fitted with a lead lining at least 5 mm (0.2 inches) thick. The lead lining must be tested annually to ensure that it is intact and functional. Another suitable lining material may be used if approved by the Associate Administrator.

TP12      This material is considered highly corrosive to steel.

TP13      Self-contained breathing apparatus must be provided when this hazardous material is transported by sea.

TP16      The portable tank must be protected against over and under pressurization which may be experienced during transportation. The means of protection must be approved by the approval agency designated to approve the portable tank in accordance with the procedures in part 107, subpart E, of this subchapter. The pressure relief device must be preceded by a frangible disk in accordance with the requirements in 178.275(g)(3) of this subchapter to prevent crystallization of the product in the pressure relief device.

TP17      Only inorganic non-combustible materials may be used for thermal insulation of the tank.

TP18      The temperature of this material must be maintained between 18 C (64.4 F) and 40 C (104 F) while in transportation. Portable tanks containing solidified methacrylic acid must not be reheated during transportation.

TP19      The calculated wall thickness must be increased by 3 mm at the time of construction. Wall thickness must be verified ultrasonically at intervals midway between periodic hydraulic tests (every 2.5 years). The portable tank must not be used if the wall thickness is less than that prescribed by the applicable T code in Column (7) of the Table for this material.

TP20      This hazardous material must only be transported in insulated tanks under a nitrogen blanket.

TP21      The wall thickness must not be less than 8 mm. Portable tanks must be hydraulically tested and internally inspected at intervals not exceeding 2.5 years.

TP22      Lubricants for portable tank fittings (for example, gaskets, shut-off valves, flanges) must be oxygen compatible.

TP24      The portable tank may be fitted with a device to prevent the build up of excess pressure due to the slow decomposition of the hazardous material being transported. The device must be in the vapor space when the tank is filled under maximum filling conditions. This device must also prevent an unacceptable amount of leakage of liquid in the case of overturning.

TP25      Sulphur trioxide 99.95% pure and above may be transported in tanks without an inhibitor provided that it is maintained at a temperature equal to or above 32.5 C (90.5 F).

TP26      The heating device must be exterior to the shell. For UN 3176, this requirement only applies when the hazardous material reacts dangerously with water.

TP27      A portable tank having a minimum test pressure of 4 bar (400 kPa) may be used provided the calculated test pressure is 4 bar or less based on the MAWP of the hazardous material, as defined in 178.275 of this subchapter, where the test pressure is 1.5 times the MAWP.

TP28      A portable tank having a minimum test pressure of 2.65 bar (265 kPa) may be used provided the calculated test pressure is 2.65 bar or less based on the MAWP of the hazardous material, as defined in 178.275 of this subchapter, where the test pressure is 1.5 times the MAWP.

TP29      A portable tank having a minimum test pressure of 1.5 bar (150.0 kPa) may be used provided the calculated test pressure is 1.5 bar or less based on the MAWP of the hazardous materials, as defined in 178.275 of this subchapter, where the test pressure is 1.5 times the MAWP.

TP30      This hazardous material may only be transported in insulated tanks.

TP31      This hazardous material may only be transported in tanks in the solid state.

TP37      IM portable tanks are only authorized for the shipment of hydrogen peroxide solutions in water containing 72% or less hydrogen peroxide by weight. Pressure relief devices shall be designed to prevent the entry of foreign matter, the leakage of liquid and the development of any dangerous excess pressure. In addition, the portable tank must be designed so that internal surfaces may be effectively cleaned and passivated. Each tank must be equipped with pressure relief devices conforming to the following requirements:

------------------------------------------------------------------------
                                                                  Total
        Concentration of hydrogen per peroxide solution            \1\
------------------------------------------------------------------------
52% or less...................................................        11
Over 52%, but not greater than 60%............................        22
Over 60%, but not greater than 72%............................        32
------------------------------------------------------------------------
\1\ Total venting capacity in standard cubic feet hour (S.C.F.H.) per
  pound of hydrogen peroxide solution.

TP38      Each portable tank must be insulated with an insulating material so that the overall thermal conductance at 15.5 C (60 F) is no more than 1.5333 kilojoules per hour per square meter per degree Celsius (0.075 Btu per hour per square foot per degree Fahrenheit) temperature differential. Insulating materials may not promote corrosion to steel when wet.

TP44      Each portable tank must be made of stainless steel, except that steel other than stainless steel may be used in accordance with the provisions of 173.24b(b) of this subchapter. Thickness of stainless steel for tank shell and heads must be the greater of 7.62 mm (0.300 inch) or the thickness required for a portable tank with a design pressure at least equal to 1.5 times the vapor pressure of the hazardous material at 46 C (115 F).

TP45      Each portable tank must be made of stainless steel, except that steel other than stainless steel may be used in accordance with the provisions of 173.24b(b) of this subchapter. Thickness of stainless steel for portable tank shells and heads must be the greater of 6.35 mm (0.250 inch) or the thickness required for a portable tank with a design pressure at least equal to 1.3 times the vapor pressure of the hazardous material at 46 C (115 F).

TP46      Portable tanks in sodium metal service are not required to be hydrostatically retested.

(8) "W" codes. These provisions apply only to transportation by water:

Code/Special Provisions

W7      Vessel stowage category for uranyl nitrate hexahydrate solution is "D" as defined in 172.101(k)(4).

W8      Vessel stowage category for pyrophoric thorium metal or pyrophoric uranium metal is "D" as defined in 172.101(k)(4).

W9      When offered for transportation by water, the following Specification packagings are not authorized unless approved by the Associate Administrator: woven plastic bags, plastic film bags, textile bags, paper bags, IBCs and bulk packagings.

W41      When offered for transportation by water, this material must be packaged in bales and be securely and tightly bound with rope, wire or similar means.

[Amdt. 172-123, 55 FR 52582, Dec. 21, 1990]