CFR › Title 46 › Part 64 › §64.6946 CFR §64.69Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkA pressure relief device must be—(a)Accessible for inspection and repair before stowage of the tank; and(b)Attached so that escaping gas does not impinge on the tank or framework.