Abstract: Shape changing robot was developed for a narrow space installation and a rough plane stable movement in severe environment. This robot consists of three parts of the slim main body and two crawlers attached to the both ends. When this robot moves a narrow space, three parts lie in a straight line like “I” shape and when the robot moves on a rough plane, three parts are formed like “U” shape. We minimized the use of electric parts in the main body against high temperature and high radiation en...
英字タイトル:
Result of Site Test for Investigation Robot for inside Primary Containment Vessel of 1F-1 - Shape Changing Robot -

Shape changing robot was developed for a narrow space installation and a rough plane stable movement in severe environment. This robot consists of three parts of the slim main body and two crawlers attached to the both ends. When this robot moves a narrow space, three parts lie in a straight line like “I” shape and when the robot moves on a rough plane, three parts are formed like “U” shape. We minimized the use of electric parts in the main body against high radiation environment. And more this robot car...
英字タイトル:
Result of Site Test for Investigation Robot for inside Primary Containment Vessel of 1F-1 - Basement floor investigation by PMORPH -

1. 概要 原子炉格納容器内部調査装置の 開発および実証 ~ 形状変化形ロボット ~ 日立 GE ニュークリア・エナジー(株) 岡田 聡 Satoshi OKADA 石澤 幸治 Koji ISHIZAWA 高橋 良知 Yoshinori TAKAHASHI 国際廃炉研究開発機構(IRID) 遠藤 洋 Hiroshi ENDO 福島第一原子力発電所の廃止措置に向け、 原子炉格 納容器 (PCV) 内部を調査するための装置を開発した [1] [2]。 PCV 内は放射線量が高く、 放射性物質飛散防止の観 点か......

The underwater vehicle system to inspect a nuclear power plant has been developed. In this work, the function of position dete ction to show the moving vehicle's position to operators is proposed. This paper describes the new method using map matching th at consists of the cross-section shape data cutted by 3-D CAD data and the inner surface geometry measured by laser range find er. Finally, by the fundamental examination using the sensor unit, it was confirmed that the position was detected within 48mm....
英字タイトル:
Position Detection Technology of Underwater Vehicle for Core Internal Inspection

Japan Atomic Energy Agency (JAEA) has organized “Pier Review Committee of Monju” consisting of experts on sodium cooled reactors and nuclear safety assessment in order to discuss and propose safety requirements for the prototype FBR Monju. JAEA is now researching the optimum plan in accordance with these safety requirements. Adopting another independent interlocking-system for the back-up shut-down system can reduce the accident risk of ULOHS: unprotected loss of heat sink. The heat transfer system of ...
英字タイトル:
Safety Requirements the Prototype Fast Breeder Reactor “Monju”