V dannoy rabote klyuchevym ponyatiem yavlyaetsya defekt. Glavnaya mysl' zaklyuchaetsya v tom chto iznachal'no teploenergeticheskoe oborudovanie rabotaet s neznachitel'nymi defektami, kotorye razvivayutsya v protsesse ekspluatatsii. Defekt v protsesse razvitiya dostignuv kriticheskogo urovnya privodit k otkazu vsey ustanovki. To est' dal'neyshaya ekspluatatsiya ustanovki nevozmozhna. Dlya predotvrashcheniya avariynykh situatsiy defekt dolzhen byt' vosstanovlen na pervonachal'nyy uroven' do otkaza ustanovki.