153.283—Valving for cargo piping.
(b)
The valve required by paragraph (a)(1) of this section may be in a cargo pumproom at the pumproom bulkhead if the cargo tank the cargo line serves is adjacent to the pumproom.
(e)
The discharge line of an intank cargo pump need not have the valve required by paragraph (a)(1) of this section.
(f)
If the cargo exerts a gravity head pressure on a valve required by this section, the valve must be a positive shutoff valve that meets § 56.50-60(d) of this chapter.
[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21208, May 17, 1982]