Title:
原子炉圧力容器を開放する方法及び燃料デブリの取出し方法
Document Type and Number:
Japanese Patent JP6518511
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method that enables concurrent execution of opening work of a reactor pressure vessel and used fuel carry-out work, and a reactor pressure vessel opening method that can reduce the risk of radiation exposure.SOLUTION: The method includes: securing a work space that allows opening work of the reactor pressure vessel to be performed in parallel with the work for carrying out used fuel from a fuel storage pool; setting a radiation shielding container in an equipment temporary placing pool and forming a first through hole in a throttle plug from inside of the radiation shielding container; providing a radiation shielding body on an upper part of a reactor well; dismantling the equipment in the reactor well through the first through hole and carrying out the same to the outside of the radiation shielding container; and after all pieces of equipment in the reactor well are dismantled and carried out to the outside of the radiation shielding container, making a second through hole in a pressure vessel head and inserting a camera through the second through hole to inspect inside of the pressure vessel head.SELECTED DRAWING: Figure 27
Inventors:
Koichi Kurosawa
Katsuhiko Hirano
Shinya Omori
Moriyachu
Tomohiko Motoki
Ishizuka Ippei
Katsumi Yanagiya
Toshihiro Sato
Katsuya Kikuchi
Katsuhiko Hirano
Shinya Omori
Moriyachu
Tomohiko Motoki
Ishizuka Ippei
Katsumi Yanagiya
Toshihiro Sato
Katsuya Kikuchi
Application Number:
JP2015105659A
Publication Date:
May 22, 2019
Filing Date:
May 25, 2015
Export Citation:
Assignee:
Hitachi ge Nuclear Energy Co., Ltd.
International Classes:
G21F9/30; G21C19/02
Domestic Patent References:
| JP2011127906A | ||||
| JP2014228483A | ||||
| JP2016206154A | ||||
| JP2011090011A | ||||
| JP2012255742A | ||||
| JP2006071323A | ||||
| JP2006098165A | ||||
| JP2002148387A |
Foreign References:
| US20080159463 | ||||
| US20120128113 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation