核燃料物質使用施設のホットセル負圧制御用として使用している空気圧縮機について、高経年化により機能低下の兆候が見られたので更新した。更新機種は、運転情報を電子データに記録できるものを選定し、 これらデータを活用した運転保守管理の改善を図った。...

In the site of O-arai research and development center of Japan Atomic Energy Agency (JAEA), there are five facilities for post irradiation examination to develop fast reactor fuel and core structure material. The facilities were const ructed during the period of 1960s and 1970s have been accumulating operating experience of the facilities more than 30 years. The safety review based on the experience has started at 2003 to confirm safety operation of the facilities. In the review activity, we have prevented...
英字タイトル:
Activity of safety review for the facilities using nuclear material

In the site of O-arai research and development center of Japan Atomic Energy Agency (JAEA), five hot laboratories for post-irradiation examination and development of plutonium fuels are operated mor e than 30 years. A safety review method for preventive maintenance on these hot laboratories includes test facilities and devices are established in 2003. After that, the safety review of these faci lities and devices are done and taken the necessary maintenance based on the results in each year.In 2008, 372 te...
英字タイトル:
Activity of safety review for the facilities using nuclear material (2) - Safety review results and maintenance experiences for hot laboratories ?

In the site of O-arai research and development center of Japan Atomic Energy Agency (JAEA), there are five facilities for post irradiation examination to develop fast reactor fuel and core structure material. The facilities which were constructed during the period of 1960s and 1970s, have been accumulating operating experience of the facilities more than 30 years. The safety review based on the experience has started at 2003 to confirm safety operation of the facilities. Then the safety operation has carri...
英字タイトル:
Activity of safety review for the facilities using nuclear material(3) - Improvement of the management system for safety operation of aged facilities

In order to develop fuels and materials for fast reactors, five hot laboratories as a facility using nuclear materials for post irradiation examination (PIE) are now in operation at the Oarai Research and Development Centre of Japan Atomic Energy Agency. More than 30 years have passed since the first hot run of these facilities was started, and it has been indispensable to maintain the principal equipment for continuous safe operation. For application to preventive maintenance and the safe operation,...
英字タイトル:
Development of safety review method to cope with an aging degradation for the facilities using nuclear material

The five post-irradiation examination facilities in the Oarai Research and Development Institute of the Japan Atomic Energy Agency have been operated for over 40 years in order to investigate the irradiation performance and physicochemical characteristics of nuclear fuels and materials for fast reactors. The equipments associated with these facilities have been managed to maintain secure from the problems that occurred in the process of aging. Therefore, we established a safety assessment method for aging f...
英字タイトル:
Development of risk assessment method to cope with an aging degradation for the facilities using nuclear material. (1) Risk assessment flow of equipments

The five post-irradiation examination facilities in JAEA's Oarai research and development institute have been operated for over 40 years in order to investigate the irradiation performance of fast reactor fuel materials. The equipment associated with these facilities has been managed to maintain secure from the problems occurred in the process of aging. Therefore, we established a safety assessment method for aging facilities in 2002, and we have been conducting maintenance management of facilities since th...
英字タイトル:
Concerning Aging of Nuclear Fuel Material Use Facilities Examination of Measures to Improve Safety Assessment Methods

Recently, the particularity of the working environment in the field of space and oceanic research lead to evelop the remote handling technology and the remote maintenance technology. Additionally, in the field f nuclear technology, such as hot laboratory, it is very important to develop the remote maintenance echnology. Espec ially, in the case of the hot laboratory to handle the irradiated fuel assembly containing he plutonium, the large scale cell equipped with shielding ability and sealing performance i...
英字タイトル:
Applying the remote maintenance technology to the Large scale hot laboratory