Cargo piping systems.

Cargo liquid or vapor piping must: (a) Be separated from other piping systems, except where an interconnection to inert gas or purge piping is required by § 154.901(a); (b) Not enter or pass through any accommodation, service, or control space; (c) Except as allowed under § 154.703, not enter or pass through a machinery space other than a cargo pump or compressor room; (d) Be in the cargo area except: (1) As allowed under § 154.703; (2) Bow and stern loading piping; and (3) Emergency jettisoning piping. (e) Be above the weather deck except: (1) As allowed under § 154.703; (2) Pipes in a trunk traversing void spaces above a cargo containment system; and (3) Pipes for draining, venting, or purging interbarrier and hold spaces; (f) Connect into the cargo containment system above the weather deck except: (1) Pipes in a trunk traversing void spaces above a cargo containment system; and (2) Pipes for draining, venting, or purging interbarrier and hold spaces. (g) Be inboard of the transverse cargo tank location required by § 154.235, except for athwartship shore connection manifolds not subject to internal pressure at sea.