| Description | Technical report into how the 24" Alwyn pipeline should be connected to the 32" Frigg Pipeline 1, bypassing the Frigg platforms after their decommissioning. It examines five options on how to resolve the problem of dual-diameter pipe that could not be inspected internally. Comprises an executive summary, introduction, objectives, decision/event tree analysis method, model input for base case, summary of base case modelling assumptions, base case results, discussion (of risks and probability of pipeline failure), conclusions and recommendations, references. With three appendices; calculation of corrosion defect failure probability, calculation of decision model inputs: probabilities and costs, and decision model output. Revision 1. |