Survey of secular change for the buildings of nuclear fuel facility in JNC Tokai works

not registered; not registered; not registered; Yamazaki, Toshihiko ; Otaki, Miyuki*

Some nuclear facilities of JNC such as Tokai Reprosessing Plant or Tokai Plutonium Fuel plant have been operating over 20 years since their completion. These facilities' buildings are constructed near the seaside, so we are that, we are surveing the secular change, estimating the tendency and counterplan to operate the facilities stably. In this paper, we resport the abstract of the result of the survey, and the maintenance stage of the diagnostic techniques etc.