46 CFR § 154.516
Piping: Hull protection
April 15, 2021
A vessel's hull must be protected from low temperature liquid leakage by a drip pan, or other means specially approved by the Commandant (CG-ENG), at:
(a) Each piping connection dismantled on a routine basis;
(b) Cargo discharge and loading manifolds; and
(c) Pump seals.
[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]