46 C.F.R. § 128.450
Liquid-mud systems.
Cite as 46 C.F.R. § 128.450 (2026)
(a) Liquid-mud piping systems may use resiliently seated valves of Category A to comply with §§ 56.20-15 and 56.50-60 of this chapter.
(b) Tanks for oil-based liquid mud must be fitted with tank vents equipped with flame screens. Vents must not discharge to the interior of the vessel.
- Cross-references to the CFR
- 56.20-15