Using the RBI calculated risk values, a fixed equipment relative risk ranking is established that strengthens the facility mechanical integrity program by allowing the operator to:
?set priorities and focus their attention on the critical areas ?justify capital investment for lifetime extension projects ?proactively address loss of primary containment and process safety issues
This paper will present the actual mechanical integrity gains realized from successfully implementing the RBI analysis at a gas plant facility. Examples of inspection findings due to the RBI plan recommendations are provided. Emphasis is placed on the accurate RBI prediction of hydrogen-induced damage for the product storage tanks, as the follow-up inspection confirmed.
Specific examples of the gas plant case study are offered as ?lessons learned?, illustrating potential RBI analysis pitfalls when required process steps are not followed.
Risk target selection is an important part of the RBI analysis. This paper based on the gas plant case study and in particular the storage tanks findings will offer a view regarding risk target selection. In conclusion, this paper will ? present RBI as a quantitative data analysis tool, compliant with industry best practices for fixed equipment risk management ? attest for the RBI's ability to strengthen a facility's mechanical integrity program ? identify potential pitfalls and RBI process breakdown ? review the risk target selection criteria and their significance
Keywords: Risk-based inspection, RBI, mechanical integrity, gas plant.
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