49 C.F.R. § 180.507 Qualification of tank cars.
Title 49 - Transportation
(a) Each tank car marked as meeting a “DOT” specification or any other tank car used for the transportation of a hazardous material must meet the requirements of this subchapter or the applicable specification to which the tank was constructed. (b) Tank car specifications no longer authorized for construction. (1) Tank cars prescribed in the following table are authorized for service provided they conform to all applicable safety requirements of this subchapter: (2) For each tank car conforming to and used under an exemption issued before October 1, 1984, which authorized the transportation of a cryogenic liquid in a tank car, the owner or operator shall remove the exemption number stenciled on the tank car and stamp the tank car with the appropriate Class DOT-113 specification followed by the applicable exemption number. For example: DOT-113D60W-E * * * * (asterisks to be replaced by the exemption number). The owner or operator marking a tank car in this manner shall retain on file a copy of the last exemption in effect during the period the tank car is in service. No person may modify a tank car marked under this paragraph unless the modification is in compliance with an applicable requirement or provision of this subchapter. (3) Specification DOT-113A175W, DOT-113C60W, DOT-113D60W, and DOT-113D120W tank cars may continue in use, but new construction is not authorized. (4) Class DOT 105A and 105S tank cars used to transport hydrogen chloride, refrigerated liquid under the terms of DOT-E 3992 may continue in service, but new construction is not authorized. (5) Specification DOT-103A-ALW, 103AW, 103ALW, 103ANW, 103BW, 103CW, 103DW, 103EW, and 104W tank cars may continue in use, but new construction is not authorized. [Amdt. 180–8, 60 FR 49079, Sept. 21, 1995, as amended at 68 FR 48572, Aug. 14, 2003]
Title 49: Transportation
PART 180—CONTINUING QUALIFICATION AND MAINTENANCE OF PACKAGINGS
Subpart F—Qualification and Maintenance of Tank Cars
§ 180.507 Qualification of tank cars.
------------------------------------------------------------------------ Specification prescribed in the Other specifications current regulations permitted Notes------------------------------------------------------------------------105A200W.............................. 105A100W................. 1105A200ALW............................ 105A100ALW............... 1105A300W.............................. ICC-105, 105A300.........105A400W.............................. 105A400..................105A500W.............................. 105A500..................105A600W.............................. 105A600..................106A500X.............................. ICC-27, BE-27, 106A500...106A800X.............................. 106A800..................107A * * * *.......................... ......................... 2------------------------------------------------------------------------Note 1: Tanks built as Specification DOT 105A100W or DOT 105A100ALW may be altered and converted to DOT 105A200W and DOT 105A200ALW, respectively.Note 2: The test pressures of tanks built in the United States between January 1, 1941 and December 31, 1955, may be increased to conform to Specification 107A. Original and revised test pressure markings must be indicated and may be shown on the tank or on a plate attached to the bulkhead of the car. Tanks built before 1941 are not authorized.
