Verification on reliability of heat exchanger for primary cooling system

Koike, Sumio; Gorai, Shigeru; Onoue, Ryuji; Otsuka, Kaoru 

Prior to the JMTR refurbishment, verification on reliability of the heat exchangers for primary cooling system was carried out to investigate an integrity of continuously use component. From a result of the significant corrosion, decrease of tube thickness, crack were not observed on the heat exchangers, and integrity of heat exchangers were confirmed. In the long terms usage of the heat exchangers, the maintenance based on periodical inspection and a long-term maintenance plan is scheduled.