CRD THERMAL SLEEVE RECEIVING CLOSURE AND CR GUIDE TUBE REMOVING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a CRD thermal sleeve receiving closure and a CR guide tube removing method capable of removing the CR guide tube while storing the thermal sleeve in a CRD housing, when checking the inside of a nuclear reactor. SOLUTION: This CRD thermal sleeve receiving closure is formed in a pan, and detachably fastened to a CRD flange 8. A lower of the thermal sleeve 5 is seated at the bottom of the CRD thermal sleeve receiving closure.