Japan Power Demonstration Reactor JPDR

A brief description of the development of forging components in the Japan Steel Works (JSW) is as follows. JSW supplied the plates for the RPVs in the Japan Power Demonstration Reactor (JPDR) of the Japan Atomic Energy Research Institute (JAERI) in 1961 and the Japan Atomic... 

During the third RCM, scientific visits were made to several facilities at the Tokai and Oarai sites. The most important one from the decommissioning point of view was the JAERI Japan Power Demonstration Reactor (JPDR), which is currently being decommissioned. In addition, visits were made to the JAERI reprocessing facility (JRTF), which it is planned to dismantle, and to waste management facilities. 

Since the first generation of electricity by the Japan Power Demonstration Reactor (JPDR) in 1963, the utilization of nuclear power has been increasing in Japan. As of the end of September, 1992, 41 nuclear power plants are operating with 33,279 MW electricity generation, and the nuclear power shares almost 27% of nation s electric supplyHowever, some of these nuclear power plants are expected to terminate their duty life in the near future. 

The JPDR is a BWR-type (45 MWt) demonstration reactor. It started to generate electricity for the first time in Japan in October 1963. In 1972 the power was increased to 90 MWt for enhancement of neutron irradiation capability. The JPDR was shut down in March, 1976 due to several problems such as cracking on the nozzle of in-core monitor tubes, the failure of control rod drive mechanism and other complications. Table I shows the major specifications, operation history and radioactive inventory of the JPDR. 

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