153.935—Opening of tanks and cargo sampling.
(a)
Except as provided in paragraph (b) of this section, the master shall ensure that all cargo tank hatches, ullage openings, and tank cleaning openings are tightly closed at all times.
(4)
To sample a cargo that Table 1 allows in a containment system having a restricted gauging system if:
(iii)
The person sampling the cargo wears the protective clothing required during cargo transfer; and
(c)
The master shall make sure that cargoes requiring closed gauging are sampled only through the controlled sampling arrangement required by § 153.404(d).
[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 21210, May 17, 1982]