What does 49 CFR 192.706 require for transmission line leakage surveys?

49 CFR 192.706 requires transmission line leakage surveys to be conducted at intervals not exceeding 15 months, but at least once each calendar year.

"Leakage surveys of a transmission line must be conducted at intervals not exceeding 15 months, but at least once each calendar year." (49 CFR 192.706)

In practice, this means operators must prioritize regular leakage surveys to ensure the safe operation of transmission lines, with more frequent surveys required for lines in certain locations, such as Class 3 and Class 4 areas.

• Conduct leakage surveys of transmission lines at required intervals, depending on location and other factors.
• Maintain records of leakage surveys, including dates, methods, and results.
• Ensure that survey methods and equipment meet regulatory requirements, such as using leak detector equipment in certain areas.