| 摘要 |
Disclosed is a method for removing a thermal sleeve (1) from a cold leg of a reactor coolant system (110), which enables removal of an unintentionally separated thermal sleeve (1) without implementation of a pipe cutting operation, preventing invasion of impurities into pipes and securing reliability in repetitious welding of the pipes. In particular, the method enables a remote operation and an underwater operation using wire ropes (W,W'), thus being capable of minimizing a negative effect on workers due to radiation exposure.
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