Tank car tank
Tank car tank means the shell, heads, tank shell and head weld joints, attachment welds, sumps, nozzles, flanges, and all other components welded thereto that are either in contact with the lading or contain the lading.
Source
49 CFR § 180.503
Scoping language
The following definitions and those contained in 171.8 and 179.2 of this subchapter apply: