Chemical decontamination method
AssigneeHitachi-GE Nuclear Energy, Ltd.
InventorsTakashi Oohira, Shintaro Yanagisawa, Satoshi Oouchi, Nobuyuki Ota, Ryo Hamada, Hideyuki Hosokawa
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Abstract
A chemical decontamination method capable of improving the decontamination efficiency of chemical decontamination of a steam dryer in the RPV is provided. In particular, the decontamination method includes feeding a chemical decontamination aqueous solution into a reactor pressure vessel in which a steam dryer is arranged, and after chemical decontamination of the steam dryer, the water level of the chemical decontamination aqueous solution existing in the reactor pressure vessel is lowered to a first water level below the lower end of the steam dryer.
Claims14
A chemical decontamination method comprising:
- feeding a chemical decontamination aqueous solution into a reactor pressure vessel in which a steam dryer is arranged, and
- after chemical decontamination of the steam dryer, a water level of the chemical decontamination aqueous solution existing in the reactor pressure vessel is lowered to a first water level below a lower end of the steam dryer.
Dependencies are inferred from the claim text.