49 C.F.R. PART 179--SPECIFICATIONS FOR TANK CARS
TITLE 49--Transportation
Subtitle B--OTHER REGULATIONS RELATING TO TRANSPORTATION
CHAPTER I--PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
SUBCHAPTER C--HAZARDOUS MATERIALS REGULATIONS
PART 179--SPECIFICATIONS FOR TANK CARS
Subpart A--INTRODUCTION, APPROVALS AND REPORTS
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| Definitions and abbreviations.
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| Procedure for securing approval.
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| Changes in specifications for tank cars.
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| Certificate of construction.
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| Quality assurance program.
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Subpart B--GENERAL DESIGN REQUIREMENTS
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| Tank car capacity and gross weight limitation.
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| Coupler vertical restraint system.
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| Tank-head puncture-resistance systems.
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| Thermal protection systems.
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| Service equipment; protection systems.
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Subpart C--SPECIFICATIONS FOR PRESSURE TANK CAR TANKS (CLASSES DOT-105, 109, 112, 114 AND 120)
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| General specifications applicable to pressure tank car tanks.
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| Tanks built under these specifications shall comply with the requirements of 179.100, 179.101 and when applicable, 179.102 and 179.103.
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| Manway nozzle, cover and protective housing.
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| Venting, loading and unloading valves, measuring and sampling devices.
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| Tests of safety relief valves.
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| Individual specification requirements applicable to pressure tank car tanks.
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| Individual specification requirements.
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| Special commodity requirements for pressure tank car tanks.
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| Carbon dioxide, refrigerated liquid.
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| Vinyl fluoride, stabilized.
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| Hydrogen chloride, refrigerated liquid.
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| Special requirements for class 114A * * * tank car tanks.
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| Venting, loading and unloading valves, measuring and sampling devices.
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| Safety relief devices and pressure regulators.
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Subpart D--SPECIFICATIONS FOR NON-PRESSURE TANK CAR TANKS (CLASSES DOT-111AW AND 115AW)
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| General specifications applicable to non-pressure tank car tanks (Class DOT-111).
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| Tank built under these specifications must meet the requirements of 179.200, and 179.201.
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| Manway ring or flange, pressure relief device flange, bottom outlet nozzle flange, bottom washout nozzle flange and other attachments and openings.
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| Gauging devices, top loading and unloading devices, venting and air inlet devices.
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| Reinforcements, when used, and appurtenances not otherwise specified.
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| Tests of pressure relief valves.
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| Individual specification requirements applicable to non-pressure tank car tanks.
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| Individual specification requirements.
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| Postweld heat treatment and corrosion resistance.
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| Manways and manway closures.
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| Sampling device and thermometer well.
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| General specifications applicable to nonpressure tank car tanks consisting of an inner container supported within an outer shell (class DOT-115).
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| Tanks built under these specifications must meet the requirements of 179.220 and 179.221.
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| Inner container manway nozzle and cover.
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| Support system for inner container.
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| Gauging devices, top loading and unloading devices, venting and air inlet devices.
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| Reinforcements, when used, and appurtenances not otherwise specified.
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| Tests of pressure relief valves.
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| Individual specification requirements applicable to tank car tanks consisting of an inner container supported within an outer shell.
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| Individual specification requirements.
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Subpart E--SPECIFICATIONS FOR MULTI-UNIT TANK CAR TANKS (CLASSES DOT-106A AND 110AW)
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| General specifications applicable to multi-unit tank car tanks designed to be removed from car structure for filling and emptying (Classes DOT-106A and 110AW).
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| Tanks built under these specifications shall meet the requirements of 179.300 and 179.301.
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| Type and general requirements.
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| Venting, loading and unloading valves.
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| Attachments not otherwise specified.
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| Tests of pressure relief devices.
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| Individual specification requirements for multi-unit tank car tanks.
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Subpart F--SPECIFICATION FOR CRYOGENIC LIQUID TANK CAR TANKS AND SEAMLESS STEEL TANKS (CLASSES DOT-113 AND 107A)
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| General specification applicable to cryogenic liquid tank car tanks.
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| Insulation system and performance standard.
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| Bursting and buckling pressure.
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| Support system for inner tank.
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| Test of pressure relief valves.
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| Individual specification requirements applicable to inner tanks for cryogenic liquid tank car tanks.
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| Individual specification requirements.
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| Specification DOT-107A * * * * seamless steel tank car tanks.
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| Tanks built under these specifications shall meet the requirements of 179.500.
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| Type and general requirements.
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| Loading and unloading valves.
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| Handling of tanks failing in tests.
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| Tests of pressure relief devices.
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