49 C.F.R. §§ 179.101-1

Current through September 30, 2024
Section 179.101-1 - Individual specification requirements

In addition to § 179.100 , the individual specification requirements are as follows:

DOT specificationInsulationBursting pressure (psig)Minimum plate thickness (inches)Test pressure (psig)Manway cover thicknessBottom outletBottom washoutReference
(179.***)
105A100ALWYes5005/81002 2 1/2NoNo
105A200ALWYes5005/82002 2 1/2NoNo
105A300ALWYes7505/83002 2 5/8NoNo
105A100WYes5003 9/161002 1/4NoNo
105A200WYes5003 9/162002 1/4NoNo
105A300WYes7501 11/163007 2 1/4NoNo
105A400WYes1,0001 11/164007 2 1/4NoNo
105A500WYes1,2501 11/165002 1/4NoNo102-1, 102-2
105A600WYes1,5001 11/166002 1/4NoNo102-4, 102-17
109A100ALWOptional5005/81002 2 1/2NoOptional
109A200ALWOptional5005/82002 2 1/2NoOptional
109A300ALWOptional7505/83002 2 5/8NoOptional
109A300WOptional5001 11/163002 1/4NoOptional
112A200WOptional45003 5 9/162002 1/4NoNo
112A340WOptional48501 11/163402 1/4NoNo
112A400WOptional41,0001 11/164002 1/4NoNo
112A500WOptional41,2501 11/165002 1/4NoNo
114A340WOptional48501 11/163406OptionalOptional103
114A400WOptional41,0001 11/164006OptionalOptional103
120A200ALWYes5005/82002 2 1/2OptionalOptional103
120A100WYes5003 9/161002 1/4OptionalOptional103
120A200WYes5003 9/162002 1/4OptionalOptional103
120A300WYes7501 11/163002 1/4OptionalOptional103
120A400WYes1,0001 11/164002 1/4OptionalOptional103
120A500WYes1,2501 11/165002 1/4OptionalOptional103

1 When steel of 65,000 to 81,000 p.s.i. minimum tensile strength is used, the thickness of plates shall be not less than 5/8 inch, and when steel of 81,000 p.s.i. minimum tensile strength is used, the minimum thickness of plate shall be not less than 9/16 inch.

2 When approved material other than aluminum alloys are used, the thickness shall be not less than 21/4 inches.

3 When steel of 65,000 p.s.i. minimum tensile strength is used, minimum thickness of plates shall be not less than 1/2 inch.

4 Tank cars not equipped with a thermal protection or an insulation system used for the transportation of a Class 2 (compressed gas) material must have at least the upper two-thirds of the exterior of the tank, including manway nozzle and all appurtenances in contact with this area, finished with a reflective coat of white paint.

5 For inside diameter of 87 inches or less, the thickness of plates shall be not less than 1/2 inch.

6 See AAR Specifications for Tank Cars, appendix E, E4.01 (IBR, see § 171.7 of this subchapter), and § 179.103-2 .

7 When the use of nickel is required by the lading, the thickness shall not be less than two inches.

49 C.F.R. §§179.101-1

Amdt. 179-52, 61 FR 28679, June 5, 1996, as amended at 66 FR 45390, Aug. 28, 2001; 68 FR 75760, Dec. 31, 2003