(8) The pressure of the hazardous material at 55 ☌ (131 ☏) may not exceedĥ/4 of the service pressure of the cylinder. After emptying, the cylinder must be condemned in accordance with § 180.205 of this subchapter. However, a cylinder in transportation or a cylinder filled prior to the expiration of its authorized service life may be transported for reprocessing or disposal of the cylinder's contents. (7) A cylinder with an authorized service life may not be offered for transportation in commerce after its authorized service life has expired. The prohibition against offering a cylinder for transportation that is overdue for periodic requalification does not apply to a cylinder filled prior to the requalification due date. (6) No person may fill a cylinder overdue for periodic requalification with a hazardous material and then offer it for transportation. For example, a cylinder marked “DOT-4B500” may be used when “DOT-4B300” is specified. (5) When a cylinder with a marked pressure limit is prescribed, another cylinder made under the same specification but with a higher marked pressure limit is authorized. (4) A cylinder that previously contained a Class 8 material must be requalified in accordance with § 180.205(e) of this subchapter. It is expressly forbidden to repair a leaking fusible plug device where the leak is through the fusible metal or between the fusible metal and the opening in the plug body, except by removal and replacement of the pressure relief device. (3) Pressure relief devices must be tested for leaks before a filled cylinder is shipped from the cylinder filling plant. A cylinder may be repaired and requalified only as prescribed in subpart C of part 180 of this subchapter.
#SHIPPING CONTAINER WHEELS DOT APPROVED CRACK#
A cylinder that has a crack or leak, is bulged, has a defective valve or a leaking or defective pressure relief device, or bears evidence of physical abuse, fire or heat damage, or detrimental rusting or corrosion, may not be filled and offered for transportation. Before each filling of a cylinder, the person filling the cylinder must visually inspect the outside of the cylinder. (2) A cylinder must be filled in accordance with this part, except that a “TC” cylinder must be filled in accordance with the Transport Canada TDG Regulations (IBR see § 171.7 of this subchapter). The DOT, ICC, CRC, BTC, CTC and TC specifications authorized for use are as follows:ġ Authorized CRC, BTC, CTC or TC specification cylinders that correspond with a DOT specification cylinder are listed in § 171.12(a)(4)(iii) of this subchapter.Ģ Use of existing cylinders is authorized. (1) Compressed gases must be in UN pressure receptacles built in accordance with the UN standards or in metal cylinders and containers built in accordance with the DOT and ICC specifications and part 178 of this subchapter in effect at the time of manufacture or CRC, BTC, CTC or TC specification, and requalified and marked as prescribed in subpart C in part 180 of this subchapter, if applicable. A cylinder filled with a Class 2 hazardous material (gas) and offered for transportation must meet the requirements in this section and §§ 173.301a through 173.305, as applicable. As used in this subpart, filled or charged means an introduction or presence of a hazardous material in a cylinder. Unless otherwise stated, as used in this section, the term “cylinder” includes a UN pressure receptacle. (a) General qualifications for use of cylinders. § 173.301 General requirements for shipment of compressed gases and other hazardous materials in cylinders, UN pressure receptacles and spherical pressure vessels.
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