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Journal Articles

Improvements in plastic enclosure system for glovebox decommissioning

Watahiki, Masatoshi; Akai, Masanori; Nakai, Koji; Iemura, Keisuke; Yoshino, Masanori*; Hirano, Hiroshi*; Kitamura, Akihiro; Suzuki, Kazunori

Nippon Genshiryoku Gakkai Wabun Rombunshi, 11(1), p.101 - 109, 2012/02

Gloveboxes used for plutonium fuel development and fabrication are eventually dismantled for replacement or decommissioning. Since equipment interior and the inner surface of gloveboxes are contaminated in radioactive materials, glovebox dismantling work is performed by workers wearing an air fed suit with mechanical tools in a plastic enclosure system to control the spread of contamination. Various improvements of enclosure system are implemented including modification of the rooms to decontaminate and undress the air fed suit and introduction of inflammable filter and safety film near the size reduction workspace against fire. We describe the countermeasures deployed in the enclosure system against potential hazards and how these devices work in the real dismantling activities.

Journal Articles

Decommissioning plutonium fuel fabrication facility

Iemura, Keisuke; Nakai, Koji; Watahiki, Masatoshi; Kitamura, Akihiro; Suzuki, Kazunori; Aoki, Yoshikazu

Dekomisshoningu Giho, (43), p.2 - 9, 2011/03

Plutonium fuel fabrication facility is constructed in 1972 and it is almost 40 years of age and equipment and components comprises the facility start degrading. Therefore we need to start dismantling gloveboxes from old ones first and at the same time to maintain the facility components and structures and gloveboxes as necessary. Also, since waste storage space is limited in the site, we effectively use open spaces generated after removing gloveboxes and equipment as temporal waste storage space. After shipping these wastes from the facility, final characterization of the facility will be conducted and demolition of the facility will be take place.

Oral presentation

Demonstrated operation of chlorine contained waste incinerator, 4

Maki, Shota; Shibata, Yuichi; Yokosuka, Kazuhiro; Fukui, Masahiro; Iemura, Keisuke; Osawa, Takayasu

no journal, , 

no abstracts in English

Oral presentation

Research for material selection of ash handling equipment of incinerator

Maki, Shota; Fukui, Masahiro; Iemura, Keisuke; Osawa, Takayasu

no journal, , 

no abstracts in English

Oral presentation

Demonstration of an incinerator for flame-retarded TRU wastes, 1; Issues and improvements on the incinerator leading up to treatment of wastes converted into 5000 of 200$$ell$$ waste drums

Maki, Shota; Yokosuka, Kazuhiro; Fukui, Masahiro; Iemura, Keisuke; Osawa, Takayasu

no journal, , 

no abstracts in English

Oral presentation

Demonstration of an incinerator for flame-retarded TRU wastes, 2; Replacement of instruments adopted by the incinerator for future use

Yokosuka, Kazuhiro; Maki, Shota; Fukui, Masahiro; Shibata, Yuichi; Iemura, Keisuke; Osawa, Takayasu

no journal, , 

no abstracts in English

Oral presentation

Oral presentation

Development of incineration technology for plutonium contaminated flame retardant waste containing chloride compound

Maki, Shota; Yokosuka, Kazuhiro; Fukui, Masahiro; Iemura, Keisuke; Osawa, Takayasu

no journal, , 

no abstracts in English

Oral presentation

Improvement on maintenance and operative performance for plutonium contaminated flame retardant wastes containing chloride compound

Fukui, Masahiro; Yokosuka, Kazuhiro; Maki, Shota; Shibata, Yuichi; Shigihara, Yuta; Ouchi, Takahiro; Minouchi, Hiroyuki; Iemura, Keisuke

no journal, , 

no abstracts in English

Oral presentation

A Replacement plan of major refractory parts of an existing incinerator for plutonium contaminated wastes to extend its lifetime

Maki, Shota; Yokosuka, Kazuhiro; Shibata, Yuichi; Fukui, Masahiro; Iemura, Keisuke

no journal, , 

no abstracts in English

Oral presentation

A Replacement plan of major refractory parts of an existing incinerator for plutonium contaminated wastes to extend its lifetime

Sawada, Sho; Maki, Shota; Yokosuka, Kazuhiro; Fukui, Masahiro; Iemura, Keisuke; Osawa, Takayasu

no journal, , 

no abstracts in English

11 (Records 1-11 displayed on this page)
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