The DOT-117 specification tank car must have a tank head puncture resistance system in conformance with §179.16(c). The full height head shields must have a minimum thickness of 1/2 inch.
49 C.F.R. §179.202-5
The DOT-117 specification tank car must have a tank head puncture resistance system in conformance with §179.16(c). The full height head shields must have a minimum thickness of 1/2 inch.
49 C.F.R. §179.202-5