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Design for decommissioning
Draft Index for review by the Joint Industry project. The final page will be completed soon with many additions
1 Statement of objectives
The D4D Database provides feedback from late life and abandonment operations. It provides practical guidance to engineers when designing new facilities or modifying existing facilities
The challenges and issues encountered at the end of a facility's life may not be foreseen or correctly considered during the design phase. This lack of attention can make the eventual decommissioning work more technically challenging and costly. The purpose of the database is to identify decommissioning issues based on real industry lessons learnt and translate these into potential solutions which could be implemented in future designs
2 History of JIP
Work group: formed in Aug 2016 with thirteen organisations
Initial project scope: boundaries identified – i.e. subsea only
Demonstrated economic value: examined the influence of decommissioning costs in the whole asset lifecycle
Structure for database: defined for use by Lead Design Engineers
Database populated: input from decommissioning community
Industry guidelines: started preparation to integrate findings and recommendations into the conceptual and FEED phases of the lifecycle
3 Decommissioning cost matrix
4 When to incorporate decommissioning in design
5 Database of lessons learnt and design guidance
Engineer Down | Unmitigated cost | Issue | Mitigation |
---|---|---|---|
Example | High | Difficulty with flushing | Identify Disposal route for fluids |
Example | High | Gas freeing of pipeline for decommissioning | Write procedure during design |
Example | High | Flushing one leg of a pipeline network | Ensure design has capability to flush one leg whilst remaining stay in operation |
6 Economic Benefits
7 Contacts Stuart.Martin@ardent.com, Caroline.Laurenson@xodus.com, Alan.Stokes@advisian.com