Pipe [a tube, usually cylindrical, through which a hazardous liquid or carbon dioxide flows from one point to another.] associated with
tie-ins must be pressure tested, either with the section to be tied in
or separately.
[Amdt. 195-22, 46 FR 38360, July 27, 1981, as amended
by Amdt. 195-51, 59 FR 29385, June 7, 1994]