SUPPORT PIN REPLACING APPARATUS FOR CONTROL ROD CLUSTER GUIDE TUBE

The support pin replacing apparatus for a control rod cluster guide tube includes a frame submerged in water, a movement device that holds the control rod cluster guide tube and moves the control rod cluster guide tube along the frame, a retrieval manipulator that retrieves a support pin of the cont...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HAMAMOTO TOMOCHIKA, MIYOSHI YOSHIYUKI, MORI NORIMASA
Format:	Patent
Sprache:	eng
Schlagworte:	MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR POWER PLANT NUCLEAR REACTORS PERFORMING OPERATIONS PHYSICS SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL TRANSPORTING WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OFELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKESTHE PLACE OF A TOOL
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Beschreibung
Zusammenfassung:	The support pin replacing apparatus for a control rod cluster guide tube includes a frame submerged in water, a movement device that holds the control rod cluster guide tube and moves the control rod cluster guide tube along the frame, a retrieval manipulator that retrieves a support pin of the control rod cluster guide tube under the water, a supply manipulator that supplies a new support pin to the control rod cluster guide tube under the water, a rotating means that imparts rotation for loosening or tightening a fastening between a nut of the support pin or the new support pin and the support pin main body, and a control device that calculates variation in distance between the nut and the support pin main body on the basis of the rotation, and controls the control rod cluster guide tube to move along the frame.