{"data":{"id":"us/40-cfr-280.44","jurisdiction":"us","citation":"40 CFR 280.44","heading":"Methods of release detection for piping.","body":"Each method of release detection for piping used to meet the requirements of § 280.41 must be conducted in accordance with the following:\n(a) Automatic line leak detectors. Methods which alert the operator to the presence of a leak by restricting or shutting off the flow of regulated substances through piping or triggering an audible or visual alarm may be used only if they detect leaks of 3 gallons per hour at 10 pounds per square inch line pressure within 1 hour. An annual test of the operation of the leak detector must be conducted in accordance with § 280.40(a)(3).\n(b) Line tightness testing. A periodic test of piping may be conducted only if it can detect a 0.1 gallon per hour leak rate at one and one-half times the operating pressure.\n(c) Applicable tank methods. Except as described in § 280.41(a), any of the methods in § 280.43(e) through (i) may be used if they are designed to detect a release from any portion of the underground piping that routinely contains regulated substances.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER I—SOLID WASTES","PART 280—TECHNICAL STANDARDS AND CORRECTIVE ACTION REQUIREMENTS FOR OWNERS AND OPERATORS OF UNDERGROUND STORAGE TANKS (UST)","Subpart D—Release Detection"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"679d16b86e76238aed44a5fe47a3906d50e386dc7c6a376c323bcdbe37bb039d","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-280.43","next":"us/40-cfr-280.45"},"notice":"GroundRules: Original legal text. Not legal advice."}