49 C.F.R. §§ 179.401-1
Current through November 30, 2024
In addition to § 179.400 , the individual specification requirements for the inner tank and its appurtenances are as follows:
| DOT specification | 113A60W | 113C120W |
| Design service temperature, °F | -423 | -260. |
| Material | § 179.400-5 | § 179.400-5 . |
| Impact test (weld and plate material) | § 179.400-5(c) | § 179.400-5(c) . |
| Impact test values | § 179.400-5(d) | § 179.400-5(d) . |
| Standard heat transfer rate. | ||
| (Btu per day per lb. of water capacity, max.) (see § 179.400-4 ) | 0.097 | 0.4121. |
| Bursting pressure, min. psig | 240 | 300. |
| Minimum plate thickness shell, inches (see § 179.400-7(a) ) | 3/16 | 3/16. |
| Minimum head thickness, inches (see § 179.400-8 (a), (b), and (c) ) | 3/16 | 3/16. |
| Test pressure, psig (see § 179.400-16 ) | 60 | 120. |
| Safety vent bursting pressure, max. psig | 60 | 120. |
| Pressure relief valve start-to-discharge pressure, psig (±3 psi) | 30 | 75. |
| Pressure relief valve vapor tight pressure, min. psig | 24 | 60. |
| Pressure relief valve flow rating pressure, max. psig | 40 | 85. |
| Alternate pressure relief valve start to-discharge pressure, psig (±3 psi) | 90. | |
| Alternate pressure relief valve vapor tight pressure, min. psig | 72. | |
| Alternate pressure relief valve flow rating pressure, max. psig | 100. | |
| Pressure control valve Start-to-vent, max. psig (see § 179.400-20(c)(4) ) | 17 | Not required. |
| Relief device discharge restrictions | § 179.400-20 | 179.400-20. |
| Transfer line insulation | § 179.400-17 | Not required. |
49 C.F.R. §§179.401-1