{"data":{"id":"us/30-cfr-250.405","jurisdiction":"us","citation":"30 CFR 250.405","heading":"What are the safety requirements for diesel engines used on a drilling rig?","body":"You must equip each diesel engine with an air intake device to shut down the diesel engine in the event of a runaway.\n(a) For a diesel engine that is not continuously manned, you must equip the engine with an automatic shutdown device;\n(b) For a diesel engine that is continuously manned, you may equip the engine with either an automatic or remote manual air intake shutdown device;\n(c) You do not have to equip a diesel engine with an air intake device if it meets one of the following criteria:\n(1) Starts a larger engine;\n(2) Powers a firewater pump;\n(3) Powers an emergency generator;\n(4) Powers a BOP accumulator system;\n(5) Provides air supply to divers or confined entry personnel;\n(6) Powers temporary equipment on a nonproducing platform;\n(7) Powers an escape capsule; or\n(8) Powers a portable single-cylinder rig washer.","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":"c77572f7bbda0350fd52c1e299d8f9ba242b8031d6e2fba29fefd17642ce7e21","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-250.404","next":"us/30-cfr-250.406"},"notice":"GroundRules: Original legal text. Not legal advice."}