PR214-233810-R01 Revised PRCI Pipeline and Facility Threat Categories

This report describes the update to Pipeline Research Council International (PRCI) threat categories, originally described in L51885 and L52317 for primarily onshore gas pipelines. The update was completed by reviewing threat categories published in Australia, Canada, Europe, and the USA. PRCI members were involved in reviewing the updated threat categories and their feedback was incorporated. The updated threat categories are now applicable to onshore, offshore, pipelines, facilities, and liquid and gas products, enabling integrity engineers to consider a variety of damage mechanism-based threats with a proposed conceptual test that requires consideration and documentation of a threat within an integrity management plan. The report also allows pipeline and facility incidents to be attributed to threat categories with higher fidelity than previous threat category systems.