{"data":{"id":"us/30-cfr-250.433","jurisdiction":"us","citation":"30 CFR 250.433","heading":"What are the diverter actuation and testing requirements?","body":"When you install the diverter system, you must actuate the diverter sealing element, diverter valves, and diverter-control systems and control stations. You must also flow-test the vent lines.\n(a) For drilling operations with a surface wellhead configuration, you must actuate the diverter system at least once every 24-hour period after the initial test. After you have nippled up on conductor casing, you must pressure-test the diverter-sealing element and diverter valves to a minimum of 200 psi. While the diverter is installed, you must conduct subsequent pressure tests within 7 days after the previous test.\n(b) For floating drilling operations with a subsea BOP stack, you must actuate the diverter system within 7 days after the previous actuation. For subsequent testing, you may partially actuate the diverter element and a flow test is not required.\n(c) You must alternate actuations and tests between control stations.","path":["Title 30—Mineral Resources","CHAPTER II—BUREAU OF SAFETY AND ENVIRONMENTAL ENFORCEMENT, DEPARTMENT OF THE INTERIOR","SUBCHAPTER B—OFFSHORE","PART 250—OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF","Subpart D—Oil and Gas Drilling Operations"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-30.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:24Z","sha256":"5621dad66ce9a14641db3a21a4e7c0a9fe92d2e76bef4b2c333678c202eca747","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-250.432","next":"us/30-cfr-250.434"},"notice":"GroundRules: Original legal text. Not legal advice."}