46 CFR § 153.520 - Special requirements for carbon disulfide.
A containment system carrying carbon disulfide must meet the following:
(a) Each cargo pump must be of the intank type and encased within a cylindrical well that extends from the top of the tank to a point no more than 10 cm (approx. 4 in.) above the bottom of the tank.
(c) The cargo piping and venting systems must be completely independent of those for other cargo.
(d) Pressure relief valves must be made of type 304 or 316 stainless steel.