Title:
【発明の名称】インコア締付ナット取扱具
Document Type and Number:
Japanese Patent JP2597691
Kind Code:
B2
Abstract:
PURPOSE:To improve the workability of exchange work of a neutron counter and contrive the reduction of a radiation exposure by providing the device body with a rotation push mechanism detachably mounted on the neutron counter and a tensile fixation mechanism for preventing the rotation of the neutron counter and, on the other hand, a remote control device for remote-controlling these mechanisms. CONSTITUTION:The device body 26 is provided with an approximately cylindrical shape body frame 33 capable of inserting in the gap of a control rod drive mechanism (CRD) motor portion 23, a rotation push mechanism 34 rotating incore-tightened nuts 11 in the body frame 33 to detachably mount on a neutron counter 1 and a tensile fixation mechanism 35 pulling the neutron counter 1 downward at the time of detachable mounting of the incore-tightened nuts 11 to prevent the rotation of the neutron counter 1. A remote control device is provided for remote-controlling the rotation push mechanism 34 and the tensile fixation mechanism 35. Thereby, workability of exchange work of the neutron counter 1 can be improved and the reduction of a radiation exposure can be contrived.
Inventors:
Kazuo Sakamaki
Kazuo Yashiro
Kazuo Yashiro
Application Number:
JP30083788A
Publication Date:
April 09, 1997
Filing Date:
November 30, 1988
Export Citation:
Assignee:
Toshiba Corporation
Kitashiba Electric Co., Ltd.
Kitashiba Electric Co., Ltd.
International Classes:
G21C19/20; (IPC1-7): G21C19/20
Domestic Patent References:
| JP63159792A | ||||
| JP1185491A |
Attorney, Agent or Firm:
Hisano Hatano (1 person outside)