49 C.F.R. § 179.401-1 Individual specification requirements.
Title 49 - Transportation
In addition to §179.400, the individual specification requirements for the inner tank and its appurtenances are as follows: [Amdt. 179–32, 48 FR 27708, June 16, 1983, as amended at 49 FR 24318, June 12, 1984; 65 FR 58632, Sept. 29, 2000; 66 FR 45390, Aug. 28, 2001]
Title 49: Transportation
PART 179—SPECIFICATIONS FOR TANK CARS
Subpart F—Specification for Cryogenic Liquid Tank Car Tanks and Seamless Steel Tanks (Classes DOT-113 and 107A)
§ 179.401-1 Individual specification requirements.
------------------------------------------------------------------------ DOT specification 113A60W 113C120W------------------------------------------------------------------------Design service temperature, -423.............. -260. °F.Material........................ § 179.400-5.. § 179.400-5.Impact test (weld and plate § 179.400- § 179.400- material). 5(c). 5(c).Impact test values.............. § 179.400- § 179.400- 5(d). 5(d).Standard heat transfer rate. (Btu per day per lb. of water 0.097............. 0.4121. capacity, max.) (see § 179.400-4).Bursting pressure, min. psig.... 240............... 300.Minimum plate thickness shell, \3/16\............ \3/16\. inches (see § 179.400- 7(a)).Minimum head thickness, inches \3/16\............ \3/16\. (see § 179.400-8 (a), (b), and (c)).Test pressure, psig (see § 60................ 120. 179.400-16).Safety vent bursting pressure, 60................ 120. max. psig.Pressure relief valve start-to- 30................ 75. discharge pressure, psig (±3 psi).Pressure relief valve vapor 24................ 60. tight pressure, min. psig.Pressure relief valve flow 40................ 85. rating pressure, max. psig.Alternate pressure relief valve .................. 90. start to-discharge pressure, psig (±3 psi).Alternate pressure relief valve .................. 72. vapor tight pressure, min. psig.Alternate pressure relief valve .................. 100. flow rating pressure, max. psig.Pressure control valve Start-to- 17................ Not required. vent, max. psig (see § 179.400-20(c)(4)).Relief device discharge § 179.400-20. 179.400-20. restrictions.Transfer line insulation........ § 179.400-17. Not required.------------------------------------------------------------------------
