NUCLEAR POWER PLANT

PROBLEM TO BE SOLVED: To provide a nuclear power plant that greatly reduces the concentration of cobalt radiation by ions and particulate substances contained in furnace water and reduces the amount of cobalt radiation that is transferred onto the outer surface of a reactor core. SOLUTION: In a nuclear power plant 100 according to the present invention, pipes and apparatuses disposed in a reactor primary system (e.g., a water system 1) are made of stainless steel, and reactor feedwater heaters 12 and 13 and a fuel bundle are made of a nickel-based alloy subjected to preliminary oxidation treatment. The nuclear power plant 100 has: the first iron-removal means for removing particulate and ionic iron from low-temperature condensate of system water by a filter and an ion-exchange resin; and the second iron-removal means for mainly removing particulate iron from mid-to-high-temperature feedwater that is higher in temperature than the condensate, the second iron-removal means having a filter made of at least one selected from the group consisting of a heat-resistant resin, ceramic, an element that forms ceramic by oxidation, carbonization, and nitriding, and a carbon material. COPYRIGHT: (C)2009,JPO&INPIT