The guideline contains: Fugitive methane emissions management plan components; leak detection survey procedures, including frequency, spacing and timing guidance; training and competency expectations; repair protocols; data collection and management requirements.
Frequency of leak detection inspections vary according to facility type, production type, control equipment present, and by the presence or absence of storage tanks. Tri-annual comprehensive surveys are required at gas processing plants, compressor stations, and a multi-well battery or single-well battery with a controlled storage tank. Unconventional wellsites, and well sites with a storage tank, need only be inspected once a year. Comprehensive surveys require the use of U.S. EPA Method 21 organic vapour analysers or optimal gas imaging instruments. Additional screening surveys should be done using the soap method or audio-visual-olfactory inspection.