1、B621-14Selection and use of highway tanks, TC portable tanks, and other large containers for the transportation of dangerous goods, Classes 3, 4, 5, 6.1, 8, and 9Legal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards devel
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18、ine:(a) Standard designation (number);(b) relevant clause, table, and/or figure number;(c) wording of the proposed change; and(d) rationale for the change. 2014 CSA GroupSelection and use of highway tanks, TC portable tanks,and other large containers for the transportation ofdangerous goods, Classes
19、 3, 4, 5, 6.1, 8, and 9January 2014 1B621-14Selection and use of highway tanks, TC portable tanks, and other large containers for the transportation of dangerous goods, Classes 3, 4, 5, 6.1, 8, and 91Scope1.1This Standard details the requirements for the selection and use, handling, filling, and unl
20、oading of highway tanks, TC portable tanks, and other large containers when they are used as a primary means of containment for the transportation of dangerous goods of Classes 3, 4, 5, 6.1, 8, and 9.1.2This Standard sets out certain minimum requirements for the selection of the appropriate means of
21、 containment for the transportation of dangerous goods. This Standard does not, however, prescribe selection of the materials of construction of the means of containment to ensure chemical compatibility with the dangerous goods. Consequently, it is essential to exercise competent technical and engin
22、eering judgment in conjunction with this Standard.1.3Where any requirement of this Standard differs from the Transportation of Dangerous Goods (TDG) Regulations, the requirements of the TDG Regulations apply.1.4This Standard does not apply to TC 56, CTC 56, and DOT 56 tanks. Requirements for these t
23、anks are provided in CAN/CGSB-43.146. (See Clause 6.4.)1.5This Standard does not apply to TC 57, CTC 57, and DOT 57 tanks. Requirements for these tanks are provided in CAN/CGSB-43.146. (See Clause 6.5.)1.6In CSA Standards, “shall” is used to express a requirement, i.e., a provision that the user is
24、obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability.
25、Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements.
26、Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.B621-14 2014 CSA Group2 January 20141.7The values given in SI (metric) units are the standard. The values given in parentheses are for information only. Units for pressure refer to gauge pressure
27、unless otherwise noted.2 Reference publicationsThis Standard refers to the following publications, and where such reference is made, it shall be to the edition listed below. Where there is an inconsistency between this Standard and a referenced publication other than the Transportation of Dangerous
28、Goods (TDG) Act or Regulations, the requirements of this Standard shall prevail. Application of a referenced publication shall be made only with careful consideration of this Standards reference to that particular publication.CSA GroupB620-1987 (superseded)Highway tanks and portable tanks for the tr
29、ansportation of dangerous goodsCAN/CSA-B620-98 (superseded)Highway tanks and portable tanks for the transportation of dangerous goodsB620-03 (superseded)Highway tanks and portable tanks for the transportation of dangerous goodsB620-09 (superseded)Highway tanks and TC portable tanks for the transport
30、ation of dangerous goodsB620-14Highway tanks and TC portable tanks for the transportation of dangerous goodsASTM International (American Society for Testing and Materials)B162-99 (2009)Standard Specification for Nickel Plate, Sheet, and StripCGSB (Canadian General Standards Board)CAN/CGSB-43.146-200
31、2Design, Manufacture and Use of Intermediate Bulk Containers for the Transportation of Dangerous GoodsCAN/CGSB-43.147-2005Construction, Modification, Qualification, Maintenance, and Selection and Use of Means of Containment for the Handling, Offering for Transport, or Transporting of Dangerous Goods
32、 by RailGovernment of CanadaTransportation of Dangerous Goods Act, S.C. 1992, c. 34, and the Transportation of Dangerous Goods Regulations, as amended from time to timeGovernment of USAUS Code of Federal Regulations, Title 49, Parts 107 to 180, as amended from time to time (referenced as CFR 49)NFPA
33、 (National Fire Protection Association)10-2013Standard for Portable Fire ExinguishersUnited NationsRecommendations on the Transport of Dangerous Goods: Model Regulations, 15th rev. ed (2007) 2014 CSA GroupSelection and use of highway tanks, TC portable tanks,and other large containers for the transp
34、ortation ofdangerous goods, Classes 3, 4, 5, 6.1, 8, and 9January 2014 33 Definitions3.1 GeneralIn addition to the definitions given in Clause 3.2, the definitions in the TDG Act and Regulations and in CSA B620-14 apply in this Standard.3.2 DefinitionsThe following definitions apply in this Standard
35、:Highway tank a tank intended for the transport of dangerous goods by road, consisting of a tank wall fitted with service equipment and structural equipment necessary for the transport or handling of such dangerous goods, and that(a)is permanently attached to or forms a part of a truck or trailer; a
36、nd(b) is loaded or unloaded without being removed from the vehicle.Liquid dangerous goods those dangerous goods that are in liquid or slurry form at any time during loading or transportation, including dangerous goods transported under a liquid blanket.Maximum allowable working pressure (MAWP) the h
37、ighest permissible internal gauge pressure at the top of a loaded tank in its normal operating orientation, including the highest internal gauge pressure during tank loading, unloading, or transport, and not exceeding design pressure.Outage the amount by which a means of containment falls short of b
38、eing full of liquid, usually expressed in per cent by volume.Padding a gas, or mixture of gases, that fills the vacant space in a means of containment.Portable tank a tank intended for the transport of dangerous goods by different modes of transport, consisting of a tank wall fitted with service equ
39、ipment and structural equipment necessary for the transport or handling of such dangerous goods, and that(a)is designed to be loaded into or onto and temporarily attached to a transport vehicle or ship;(b) is equipped with skids, mountings, or accessories to facilitate mechanical handling;(c) enable
40、s the dangerous good to be loaded and unloaded without the removal of structural equipment and without the tank being loaded onto or attached to a transport vehicle;(d) is capable of being lifted when full, unless otherwise specified in this Standard; and(e) is not a highway tank, a rail tank car ta
41、nk, a nonmetallic tank, or an intermediate bulk container (IBC).Primary means of containment any enclosure used as the innermost means of containment for dangerous goods being transported. This can include highway tanks, portable tanks, and other large containers.Solid dangerous goods those dangerou
42、s goods that are in solid, granular, crystalline, or powder form throughout their transport.4 Selection of the means of containment4.1 General requirementsIn addition to any Specific Requirements given in Clause 8 for the particular dangerous goods to be transported, the means of containment shall c
43、omply with the requirements of Clauses 4.2, 4.3, and 4.4. Where a TC specification tank is required by this Standard, the tank shall comply with the applicable requirements of CSA B620-14, unless otherwise specified.B621-14 2014 CSA Group4 January 20144.2 Means of containmentAll primary means of con
44、tainment used for the transportation of dangerous goods shall be(a) watertight and constructed so that neither rain nor road spray can come into contact with the dangerous goods;(b) dust-proof, sift-proof, and constructed so that the dangerous goods are securely retained in the means of containment
45、under normal conditions of transport;(c) constructed of impermeable, nonabsorbent materials that will not be corroded by the lading;(d) designed to facilitate cleaning and decontamination;(e) where the dangerous goods are liquid, leak-free and designed for the transport of liquids; and(f) capable of
46、 withstanding any internal pressure likely to be encountered under normal conditions of transport, without any permanent deformation or leaks.4.3 Dangerous goods and containment material compatibilityThose parts of the means of containment and accessories that contact the dangerous goods shall be co
47、nstructed of a material that is(a) appropriate for the temperature of the material being transported; and(b) one of the following:(i) resistant to deterioration by the goods being transported;(ii) passivated or otherwise treated to reduce the rate of deterioration so that any minimum thickness requi
48、rement is maintained during transportation; or(iii) lined with a nonporous, imperforate material that is resistant to deterioration by the goods being transported and that has thermal expansion and elasticity characteristics compatible with those of the material of construction of the means of conta
49、inment.4.4 MAWP and pressure-relief valve settingsThe MAWP and the set-to-discharge pressure of each safety relief device of a tank shall be greater than or equal to(a)for tanks equipped with a 7kPa (1 psig) normal vent, the sum of the static head of the lading plus 7kPa (1 psig) provided:(i) the lading is gasoline UN 1203, or ethanol and gasoline mixtures UN 3475, transported pursuant to
