Reliability assessment avoids new FCCU expander purchase

New blades installed in 1998 show erosion after 2 years of service.Click here to enlarge imageBP Amoco's Whiting, Ind., refinery saved millions of dollars by avoiding the purchase of a new power-recovery turbine expander (PRT) to replace its existing one, which experienced four unplanned outages between 1995 and 1998.A vigorous technical and economic assessment showed that a new PRT would not have solved the machine's reliability problems. Instead, development of appropriate key performance and maintenance indicators kept the existing PRT in operation.The four unplanned PRT outages, caused by blade and steam-baffle bolting failures, were expensive. The cost of mechanical repair ...

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