METHOD AND APPARATUS FOR MANIPULATING CONTROL ROD

PURPOSE:To provide a method and apparatus for manipulating a control rod in which a control rod and a control rod driver coupled through a bayonet coupling system can be uncoupled, the control rod and a fuel supporting metal can be drawn out simultaneously above an upper lattice plate, and control r...

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Bibliographic Details
Main Authors KONNO TAKAHIRO, HOSOYA KIYOKAZU, KODAMA TOSHIHIRO
Format Patent
LanguageEnglish
Published 22.03.1994
Edition5
Subjects
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
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Summary:PURPOSE:To provide a method and apparatus for manipulating a control rod in which a control rod and a control rod driver coupled through a bayonet coupling system can be uncoupled, the control rod and a fuel supporting metal can be drawn out simultaneously above an upper lattice plate, and control rod replacing time can be shortened. CONSTITUTION:At first, a control rod manipulator 100 is lowered into a reactor core by means of the auxiliary hoist of a fuel replacing machine and a fuel supporting metal (FS) manipulating part 22 is lowered onto an FS 7 by means of an elevating/lowering section 23 thus positioning the FS manipulating part 22 by means of a positioning pin 38. The FS 7 is then clamped with an FS clamper 32 and detached above from an upper lattice plate 9 by means of the elevating/lowering section 23. Control rod CR 6 is then clamped by means of a control rod(CR) clamper 34 and turned by 45 deg. in the peripheral direction through a clamping/turning section 24 thus uncoupling the CR 6 and a control rod driver(CRD) 4 coupled through a bayonet coupling 10. The CR 6 is then drawn out above the upper lattice plate 9 by means of the auxiliary hoist of fuel replacing machine under that state.
Bibliography:Application Number: JP19920232261