CORROSION PREVENTION SYSTEM AND CORROSION PREVENTION METHOD FOR NUCLEAR POWER PLANT

摘要

PROBLEM TO BE SOLVED: To suppress the corrosion of a nuclear power plant structural material into which sea water or fresh water is injected by connecting an injection line of a rust preventive having a deaerator and a recycle line to the cooling water circulation system of a nuclear reactor.;SOLUTION: A corrosion prevention system for a nuclear power plant includes: a cooling water circulation system 12 connected to a nuclear reactor pressure container 1 and circulating cooling water; an injection line 30 connected to the cooling water circulation system 12 and provided with a deaerator 25 and a rust preventive injection device 18; and a recycle line 31 connected to the cooling water circulation system 12 and provided with cleaning devices 13, 14, a rust preventive separation device 15 and a deaerator 25. In the system, the rust preventive is made of one selected from sodium pentaborate, molybdate, tungstate and metal hydroxide or a mixture of two or more thereof.;COPYRIGHT: (C)2013,JPO&INPIT