{"data":{"id":"us/30-cfr-18.67","jurisdiction":"us","citation":"30 CFR 18.67","heading":"Static-pressure tests.","body":"Static-pressure tests shall be conducted by the applicant on each enclosure of a specific design when MSHA determines that visual inspection will not reveal defects in castings or in single-seam welds. Such test procedure shall be submitted to MSHA for approval and the specifications on file with MSHA shall include a statement assuring that such tests will be conducted. The static pressure to be applied shall be 150 pounds per square inch (gage) or one and one-half times the maximum pressure recorded in MSHA's explosion tests, whichever is greater.","path":["Title 30—Mineral Resources","CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","SUBCHAPTER B—TESTING, EVALUATION, AND APPROVAL OF MINING PRODUCTS","PART 18—ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES","Subpart C—Inspections and Tests"],"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":"1b05f0cc9fd05ea3a905768403f39d0016af682dae577553cf8cc483e7e85924","source_id":"us-cfr","stale":true,"prev":"us/30-cfr-18.66","next":"us/30-cfr-18.68"},"notice":"GroundRules: Original legal text. Not legal advice."}