{"data":{"id":"us/46-cfr-39.2014","jurisdiction":"us","citation":"46 CFR 39.2014","heading":"Polymerizing cargoes safety—TB/ALL.","body":"(a) Common vapor headers for polymerizing cargoes must be constructed with adequate means to permit internal examination of vent headers.\n(b) Vapor piping systems and pressure-vacuum valves that are used for polymerizing cargoes must be inspected internally at least annually.\n(c) Pressure-vacuum valves and spill valves which are used for polymerizing cargoes must be tested for proper movement prior to each transfer.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER D—TANK VESSELS","PART 39—VAPOR CONTROL SYSTEMS","Subpart 39.2000—Equipment and Installation"],"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":"d0e1bda28e0c76640790f6c796c507df5d4b45f99207f7194f285f55b0e82370","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-39.2013","next":"us/46-cfr-39.2015"},"notice":"GroundRules: Original legal text. Not legal advice."}