An Assessment Procedure to Justify Operation of Gas Transmission Pipelines at Design Factors up to 0.8

摘要

The objective of the recommendations given in IGE/TD/1 is to ensure that onshore high-pressure gas transmission pipelines are designed, constructed and operated safely. The current recommendations limit the design factor to 0.72 but allow deviation from this limit if justified through a reliability/risk analysis. It is thus accepted that pipelines may operate at design factors above 0.72 provided that a detailed reliability/risk based assessment demonstrates that it is safe to do so. The production and review of such assessments involves considerable effort from both the operator and the regulator.