46 CFR § 154.1730
Ethylene oxide: Loading and off loading
April 15, 2021
(a) The master shall ensure that before ethylene oxide is loaded into a cargo tank:
(1) The tank is thoroughly clean, dry, and free of rust;
(2) The hold spaces are inerted with an inert gas that meets §154.1710(b)(1); and
(3) The cargo tank vapor space is inerted with nitrogen.
(b) Ethylene oxide must be off loaded by a deepwell pump or inert gas displacement.
(c) Ethylene oxide must not be carried in deck tanks.