Natural Gas Safety Inspections
The Atmospheric Corrosion Program establishes uniform procedures that monitor metallic pipelines for atmospheric corrosion. Avista’s Atmospheric Corrosion Program also includes specific continuing surveillance inspections, including settled, overgrown, overbuilt meters and meters requiring protection in the form of a barricade or bollard.
The Cross Bore Inspection Program is focused on mitigating the risks associated with the potential of cross bores which involve a natural gas mainline or service line that has been bored through a sewer/septic main or lateral during installation. The program utilizes camera technology, both pre- and post-construction, to inspect existing sewer laterals and ensure no damage resulted from the installation of gas facilities.
Isolated steel inspections are performed at the meter and service risers in order to identify sections of isolated steel pipeline, including any isolated service risers, within Avista's system.
The Leak Survey Program establishes procedures for the detection, classification, and reporting of natural gas leakage in Avista’s distribution and transmission pipeline systems and facilities. Included in the program scope are leak survey types, methods, leak classification criteria, leak investigation and follow-up procedures, as well as record keeping requirements.