<prompt> Qedela umusho olandelayo: Ngokuncipha komkhakha wamandla enuzi okwalandela i-  <response>: Ingozi yaseThree Mile Island nenhlekelele yaseChernobyl, iWestinghouse yashiya indawo enkulu ekuqaleni kweminyaka yama-1990, futhi isikhala saqashiswa kubaqashi bezentengiselwano. Ngo-1994, iqembu lababeyizisebenzi kule ndawo lasungula iPittsburgh Materials Technology Inc. PMTI ukwakha amakhono athuthukiswe yiWestinghouse, kufaka phakathi izingxubevange zensimbi eziphambili. Ngo-2007, i-PMTI isancibilikisa, icubungula futhi ihlola ama-alloys afana ne-niobium-base, i-tantalum-base, ne-vanadium-base compositions yochungechunge lwamakhasimende emikhakheni yezindiza nezimboni. 