Ask X3What does 49 CFR 180.413 (Repair, modification, stretching, rebarrelling, or mounting of specification cargo tanks) require?
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As a motor-carrier owner, according to 49 CFR 180.413, any repair, modification, stretching, rebarrelling, or mounting of a specification cargo tank must meet the following requirements:
* Facility Certification: Generally, work must be performed by a repair facility holding a valid National Board Certificate of Authorization for the "R" stamp and follow the current National Board Inspection Code. (Non-ASME stamped cargo tanks have alternative options using ASME "U" stamp facilities or National Board "R" stamp facilities without needing an Authorized Inspector, R-1 form, or "R" stamp). Canadian facilities meeting specific Transport Canada requirements may also perform repairs.
* Emptying and Purging: Before any work begins, the cargo tank motor vehicle must be completely emptied of hazardous material lading. If it transported flammable or toxic lading, it must be sufficiently cleaned and purged of vapors to remove all potential hazards, including in void spaces (such as double bulkheads), piping, and vapor recovery systems.
* Registration: Every person performing these activities on a DOT specification cargo tank must be registered in accordance with 49 CFR part 107, subpart F.
* Testing and Certification:
* Repairs affecting structural integrity or lading retention must be tested appropriately.
* Except for certain Canadian repairs, any cargo tank repair involving welding on the shell or head must be certified by a Registered Inspector.
* Specific cargo tanks must be repaired in accordance with their designated specification editions (such as current manufacturing specifications or applicable DOT specifications).
* Piping, Valves, Hoses, and Fittings: After maintenance or replacement, components must be installed per the applicable specification and tested for leaks. If welding on the tank wall is involved, the cargo tank must also be pressure tested.
* Modifications, Stretching, or Rebarrelling: The design must be certified in writing by a Design Certifying Engineer to meet structural integrity and accident damage protection requirements, and new materials/equipment must meet the specifications in effect when the work is performed.