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Report No.

Restoration of the corrosion department of the reprocessing facilities analysis waste fluid plumbing

Nishida, Naoki ; Suwa, Toshio ; Tanaka, Naoki ; Inada, Satoshi; Kuno, Takehiko 

Corroded pore was found at stainless pipe for liquid waste solution from the analytical laboratory. Part of the pipe was cut for preparing samples to investigate the cause of the corrosion. The same size of stainless pipe was welded to recover it, under the strict radiation control. The restoration work was done inside of the vinyl house, as it is called "greenhouse", which was the small room completely separated by vinyl sheet. All the works, cutting, decontamination, digging groove and welding with back seal gas, were done inside of the greenhouse. We report the work method for recovery of corroded pipe containing radioactive materials



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