Kuleyliyaha dhuumaha waa nooc ka mid ah qalabka tamarta lagu badbaadinayo ee horay u kululeeya walxaha. Kuleyliyaha dhuumaha waxaa loo qaybin karaa laba qaab: mid waa in la isticmaalo nooca flange tubular element koronto kuleyliyaha dhuumaha si ay u kululeeyaan saliid conduction ee jaakadda reactor ee kuleyliyaha dhuumaha, iyo wareejinta tamarta kulaylka ee kuleyliyaha dhuumaha. Walxaha kiimikada ah ee ceeriin ee ku jira reactor gudaha kuleyliyaha tuubada Si kale ayaa ah in la geliyo walxaha kuleyliyaha korantada ee tuubada si toos ah reactor-ka kuleyliyaha tuubada ama si siman loo qaybiyo tuubooyinka kuleylka korontada ee ku wareegsan darbiga tuubada kuleyliyaha.