<prompt> Nyorai kupfuurira kweiyi ndima - Dhizaini yemuchina ine yakasikwa yakachengeteka maitiro inopa zvakananga passive chengetedzo chikamu panguva yakatarwa yekukundikana mamiriro mune ese mashandiro ekushandisa anowanzo tsanangurwa seyakaenzana kukundikana-kuchengeteka kune iyo yekundikana mamiriro. Zvisinei vakawanda ano mvura-dzaserera uye -moderated reactors, apo scrammed, havagoni kubvisa residual kugadzirwa uye kuora kupisa pasina kana muitiro kupisa kuchinjirwa kana vanoshingaira kutonhora hurongwa. Nemamwe mashoko, nepo muitiro wokupisa unochengeteka unogovera chinhu chinodzivirira kudzivirira kupisa kwakanyanyisa apo reactor iri kushanda, muitiro mumwe chetewo wokupisa unochengeteka haupi chinhu chinodzivirira kudzivirira kana reactor ichidzimwa SCRAMed. Tsaona yeThree Mile Island  <response>: yakaratidza kukundikana uku kwokugadzira: reactor uye mugadziri wemhepo yakadzimwa asi nokurasikirwa nemvura inotonhorera yakatambura kuparara kwechikamu. 