46 C.F.R. § 154.1715 Moisture control.
Title 46 - Shipping
When a vessel is carrying sulfur dioxide, the master shall ensure that: (a) A cargo tank is dry before it is loaded with sulfur dioxide; and (b) Air or inert gas admitted into a cargo tank carrying sulfur dioxide during discharging or tank breathing has a moisture content equal to or less than the moisture content of air with a dewpoint of −45 °C (−49 °F) at atmospheric pressure.
Title 46: Shipping
PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES
Subpart D—Special Design and Operating Requirements
§ 154.1715 Moisture control.
