CFR > Title 49 - Transportation > SUBTITLE B—Other Regulations Relating to Transportation > CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (Parts 105–199) > SUBCHAPTER C—HAZARDOUS MATERIALS REGULATIONS (Parts 171–181) > PART 179—SPECIFICATIONS FOR TANK CARS > SUBPART E—Specifications for Multi-Unit Tank Car Tanks (Classes DOT-106A and 110AW) (§179.300 to §179.302) > 179.301—Individual specification requirements for multi-unit tank car tanks.

179.301—Individual specification requirements for multi-unit tank car tanks.

(a) In addition to § 179.300 the individual specification requirements are as follows:
DOT specification 106A500-X 106A800-X 110A500-W 110A600-W 110A800-W 110A1000-W
Minimum required bursting pressure, psig (1) (1) 1250 1500 2000 2500
Minimum thickness shell, inches 13/32 11/16 11/32 3/8 15/32 19/32
Test pressure, psig (see § 179.300-16 ) 500 800 500 600 800 1000
Safety relief devices, psig (see § 179.300-15 )
Start-to-discharge, or burst maximum, p.s.i. 375 600 375 450 600 700
Vapor-tight, minimum psig 300 480 300 360 480 650
1 None specified.
(b) [Reserved]
[29 FR 18995, Dec. 29, 1964. Redesignated at 32 FR 5606, Apr. 5, 1967, and amended by Amdt. 179-10, 36 FR 21355, Nov. 6, 1971; Amdt. 179-40, 52 FR 13049, Apr. 20, 1987; 65 FR 58632, Sept. 29, 2000; 66 FR 45390, Aug. 28, 2001]