| 摘要 |
Injection device used when a reactor is shut down to remove radioactive substances from within the gap between the internal piping and the inside of the nozzles of a RPV by injecting fluid towards the inside of these nozzles. The injection device is equipped with an injection nozzle that injects fluid towards the end of the gap, a casing that supports this injection nozzle, a suspension mechanism whereby the casing is movably suspended from above the RPV, a water feed device that supplies high-pressure fluid to the injection nozzle, a sensor or the like that senses when the casing is positioned directly above the internal piping and a fixing mechanism that temporarily fixes the casing to the inside wall of the RPV.
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