Corrosion Under Insulation
Joint Industry Project
Update of DNV-RP-G109, appendix A, B and C.
Challenge
Address challenges related to corrosion under insulation (CUI) for corrosion resistant alloys (CRA) and provide a recommended practice as part of DNV-RP-G109 appendix A. The coating table B1 needs more quantitative measures and more coating types need to be added to table B1 in DNV-RP-G109 appendix B. Moist monitoring to manage CUI is about to be rolled out in the industry. It is a need to set requirements for how monitoring systems can be used when working in accordance with DNV-RP-G109.
Solution
Review and improve methodology for corrosion resistant alloys in Appendix A. Update table B1 to include more coating systems, including systems for repair accelerated testing av specific systems to confirm or adjust expected life time. Include requirements for water/moist monitoring and how sensors can be used in a risk assessment for CUI, ie. from data to decision support.
Benefits
- Improved methodology for risk assessment of CUI
- Enable the use of new monitoring technology in accordance with DNV-RP-G109
Value
- Better risk management
- More efficient maintenance
- Increased safety
- Optimized cost
Duration
2023 - 2024