{"operation":"document","citation":"49 CFR 192.706","title":"Transmission lines: Leakage surveys.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"Leakage surveys of a transmission line must be conducted at intervals not exceeding 15 months, but at least once each calendar year. However, in the case of a transmission line which transports gas in conformity with § 192.625 without an odor or odorant, leakage surveys using leak detector equipment","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-192-706.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-192-706.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-192-706","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-192.706","body":"Leakage surveys of a transmission line must be conducted at intervals not exceeding 15 months, but at least once each calendar year. However, in the case of a transmission line which transports gas in conformity with § 192.625 without an odor or odorant, leakage surveys using leak detector equipment must be conducted—\n\n(a) In Class 3 locations, at intervals not exceeding 7 1/2 months, but at least twice each calendar year; and\n\n(b) In Class 4 locations, at intervals not exceeding 4 1/2 months, but at least four times each calendar year.\n\n[Amdt. 192-21, 40 FR 20283, May 9, 1975, as amended by Amdt. 192-43, 47 FR 46851, Oct. 21, 1982; Amdt. 192-71, 59 FR 6585, Feb. 11, 1994]","truncated":false,"body_characters":681}