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- W2088707788 abstract "The authors were asked to assist a utility with a risk man-agement decision. Specifically, the utility was consideringwhether they should maintain or decommission an 800,000gallon propane storage sphere. The 30-year old sphere wasthe fuel storage vessel for a propane standby system. One oftheir major concerns was the shrinking buffer zone aroundtheir facility. Although the facility was originally located in aremote rural area, residential development had begun toencroach upon the facility’s buffer zone.The original analysis was based on a consideration of theoffsite consequences for a worst-case scenario. This was doneat the request of the client as it reflected their degree of riskacceptance. The consequences of two hazard scenarios wereanalyzed: an unconfined vapor cloud explosion and a Boil-ing Liquid Expanding Vapor Explosion (BLEVE). To supportthis analysis, the mechanical integrity of the sphere was eval-uated deterministically by considering the pressure vesseldesign documents, the limited nondestructive test and evalu-ation data available, and published data on typical corro-sion rates. Additional factors incorporated into the analysiswere the capabilities of the existing fire protection system, thefacility security system, and the propane unloading stationfor tank car deliveries. Finally, the economics of maintainingthe sphere versus decommissioning it were explored. Ulti-mately, the utility decided to decommission the sphere.In this article, we conduct a retrospective study using arisk-based approach. We identify a set of hazard scenariosfor the propane storage sphere, calculate the leak frequencyfor each scenario, compute the associated source term, andevaluate the consequences. The results are compared with theoriginal consequence analysis and other published hazardstudies. The implications for risk management are discussed." @default.
- W2088707788 created "2016-06-24" @default.
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- W2088707788 date "2013-04-03" @default.
- W2088707788 modified "2023-09-26" @default.
- W2088707788 title "Risk assessment of a propane storage sphere: Maintain or decommission?" @default.
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- W2088707788 doi "https://doi.org/10.1002/prs.11581" @default.
- W2088707788 hasPublicationYear "2013" @default.
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