46 C.F.R. § 154.1750 Butadiene or vinyl chloride: Refrigeration system.
Title 46 - Shipping
A refrigeration system for butadiene or vinyl chloride must not use vapor compression unless it: (a) Avoids any stagnation points where uninhibited liquid can accumulate; or (b) Has inhibited liquid from the cargo tank added to the vapor upstream of the condenser.
Title 46: Shipping
PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES
Subpart D—Special Design and Operating Requirements
§ 154.1750 Butadiene or vinyl chloride: Refrigeration system.

