{"data":{"id":"us/46-cfr-128.450","jurisdiction":"us","citation":"46 CFR 128.450","heading":"Liquid-mud systems.","body":"(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.\n(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.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER L—OFFSHORE SUPPLY VESSELS","PART 128—MARINE ENGINEERING: EQUIPMENT AND SYSTEMS","Subpart D—Design Requirements for Specific Systems"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"6b4ee6ee59b411d22bc3301cced3b3bf0a0930486285ca0556515df6a42dd6db","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-128.440","next":"us/46-cfr-129.100"},"notice":"GroundRules: Original legal text. Not legal advice."}