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§179.101-1 — Individual specification requirements In addition to §179.100, the individual specification requirements are as follows: | DOT specification | Insulation | Bursting | Minimum plate thickness (inches) | Test pressure (psig) | Manway cover thickness | Bottom outlet | Bottom washout | Reference (179.***) |
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| 105A100ALW | Yes | 500 | 5/8 | 100 | ²2 1/2 | No | No | | | 105A200ALW | Yes | 500 | 5/8 | 200 | ²2 1/2 | No | No | | | 105A300ALW | Yes | 750 | 5/8 | 300 | ²2 5/8 | No | No | | | 105A100W | Yes | 500 | ³9/16 | 100 | 2 1/4 | No | No | | | 105A200W | Yes | 500 | ³9/16 | 200 | 2 1/4 | No | No | | | 105A300W | Yes | 750 | ¹11/16 | 300 | 72 1/4 | No | No | | | 105A400W | Yes | 1,000 | ¹11/16 | 400 | 72 1/4 | No | No | | | 105A500W | Yes | 1,250 | ¹11/16 | 500 | 2 1/4 | No | No | 102-1, 102-2 | | 105A600W | Yes | 1,500 | ¹11/16 | 600 | 2 1/4 | No | No | 102-4, 102-17 | | 109A100ALW | Optional | 500 | 5/8 | 100 | ²2 1/2 | No | Optional | | | 109A200ALW | Optional | 500 | 5/8 | 200 | ²2 1/2 | No | Optional | | | 109A300ALW | Optional | 750 | 5/8 | 300 | ²2 5/8 | No | Optional | | | 109A300W | Optional | 500 | ¹11/16 | 300 | 2 1/4 | No | Optional | | | 112A200W | Optional4 | 500 | 3,59/16 | 200 | 2 1/4 | No | No | | | 112A340W | Optional4 | 850 | ¹11/16 | 340 | 2 1/4 | No | No | | | 112A400W | Optional4 | 1,000 | ¹11/16 | 400 | 2 1/4 | No | No | | | 112A500W | Optional4 | 1,250 | ¹11/16 | 500 | 2 1/4 | No | No | | | 114A340W | Optional4 | 850 | ¹11/16 | 340 | 6 | Optional | Optional | 103 | | 114A400W | Optional4 | 1,000 | ¹11/16 | 400 | 6 | Optional | Optional | 103 | | 120A200ALW | Yes | 500 | 5/8 | 200 | ²2 1/2 | Optional | Optional | 103 | | 120A100W | Yes | 500 | ³9/16 | 100 | 2 1/4 | Optional | Optional | 103 | | 120A200W | Yes | 500 | ³9/16 | 200 | 2 1/4 | Optional | Optional | 103 | | 120A300W | Yes | 750 | ¹11/16 | 300 | 2 1/4 | Optional | Optional | 103 | | 120A400W | Yes | 1,000 | ¹11/16 | 400 | 2 1/4 | Optional | Optional | 103 | | 120A500W | Yes | 1,250 | ¹11/16 | 500 | 2 1/4 | Optional | Optional | 103 |
| 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. |
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| ² | When approved material other than aluminum alloys are used, the thickness shall be not less than 2 1/4 inches. |
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| 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. |
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| 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. |
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| 5 | For inside diameter of 87 inches or less, the thickness of plates shall be not less than 1/2 inch. |
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| 6 | See AAR Specifications for Tank Cars, appendix E, E4.01 (IBR, see §171.7 of this subchapter), and §179.103-2. |
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| 7 | When the use of nickel is required by the lading, the thickness shall not be less than two inches. |
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[Amdt. 179-52, 61 FR 28679, June 5, 1996, as amended at 66 FR 45390, Aug. 28, 2001; 68 FR 75760, Dec. 31, 2003]
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