| Custodial History | Copy 12, retained by Inform (Document Centre). |
| Description | Covers the Alwyn, Dunbar and Frigg pipeline systems. Comprises an Introduction, giving the objectives of the document, regulations and layout of the document; Pipeline Safety Management System, showing the procedural hierarchy of the Pipeline Safety Management System and giving a brief overview of operating and emergency procedures; Pipeline Risk Management, summarising the the relevant manual; and a Reference of related documentation. Then it is divided into the three pipeline systems, with maps, diagrams, technical descriptions of the pipelines, process diagrams, and medium/high risk failure modes (how the pipeline may fail and what may cause this). Low risk failure modes are not shown. Full colour. Second revision with signed amendment dated July 1998. |