46 C.F.R. § 154.1826 Opening of cargo tanks and cargo sampling.
Title 46 - Shipping
(a) The master shall ensure that each cargo tank opening is fully closed at all times. (b) The master may authorize the opening of a cargo tank: (1) During tank cleaning; and (2) To sample a cargo that Table 4 allows to be carried in a containment system having a restricted gauging system if: (i) The cargo tank is not being filled during sampling; (ii) The vent system has relieved any pressure in the tank; and (iii) The person sampling the cargo wears protective clothing. (c) The master shall ensure that cargoes requiring closed gauging as listed in Table 4 are sampled only through the controlled sampling arrangement of the cargo tank.
Title 46: Shipping
PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES
Subpart E—Operations
§ 154.1826 Opening of cargo tanks and cargo sampling.
