<prompt> Bhala ukuqhubeka kwalesi sigaba - Ngokuncipha komkhakha wamandla enuzi kulandela ingozi yaseThree Mile Island  <response>: kanye nenhlekelele yaseChernobyl, iWestinghouse yashiya indawo enkulu ekuqaleni kwawo-1990, futhi isikhala saqashiswa kubaqashi bezentengiselwano abaningana. 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. 