Transitioning from Time Based to Risk Based Inspection (RBI) for Static Equipment at Banyu Urip Facility

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This paper discusses the strategies, implementation, and benefits of the transition from time-based to risked-based inspections (RBI) for static equipment in Banyu Urip Facility. A review of facility integrity programs was conducted to pressure vessel (PV) and tank inspection results to assess the effectiveness of associated integrity programs. This data was utilized as a basis for risk assessment to determine if an RBI program was fit for the purpose to extend inspection intervals for static equipment. The implementation of RBI in Banyu Urip Facility began with carbon steel pressure vessels and tanks. These static equipment were jointly evaluated by multiple functions to ensure seamless execution and timely analysis of data. Inspection packages were developed, which considered applicable degradation mechanisms to select representative test points and ensure consistency for future inspection. All inspection packages consisted of general arrangement drawings depicting vessels and associated test points. Once reviewed and approved, this information was documented in Asset Integrity Management Software to streamline future campaigns. Each vessel was independently evaluated for RBI suitability including the identification of credible failure mode and details of potential future inspection requirements. Outcomes of this evaluation were transmitted into fit for risk inspection interval that provides cost reduction opportunity while maintaining equipment integrity. Furthermore, it also help to drive focus toward higher criticality equipment. This approach is also being considered for other types of static equipment, including piping and PSV.