Results 11 to 20 of about 952 (162)

Development of Fuel Debris Inspection Methods using Air-Coupled Ultrasound [PDF]

E3S Web of Conferences, 2018
Japan has decided to start fuel debris removal on 2021. Therefore, before starting retrieval of the fuel debris, investigation of location, shape, and also properties of fuel debris have to be performed.
Hamdani Ari, Kikura Hiroshige, Kimura Shun, Tsukada Keisuke, Sasa Daisuku, Oomori Shuichi   +5 more
doaj   +4 more sources

Fukushima Dai-ichi fuel debris retrieval: CFD calculations of aerosol dispersion and mitigation by spray systems in representative conditions of the 1F2 reactor pedestal [PDF]

, 2021
IntroductionThe general context of this study is related to demonstrate the feasibility of the use of the laser cutting technique for the fuel debris (or corium) retrieval on the damaged reactors of Fukushima Dai-ichi. IRSN is involved in a project led by ONET Technologies, in collaboration with CEA, to bring relevant elements to analyse the risk ...
Gelain, Thomas, Porcheron, Emmanuel, Leblois, Yohan, Doyen, Ioana, Journeau, Christophe, Delalez, Remi, Roulet, Damien   +6 more
openaire   +2 more sources

Aerosol Mitigation Means for Fukushima Daiichi Fuel Debris Removal [PDF]

, 2023
International audienceThe general context of the article is to evaluate strategies that can be used to mitigate aerosols dispersion during the fuel debris or corium retrieval of Fukushima damaged reactors. IRSN is involved in several projects led by ONET
Delalez, Rémi, Gelain, Thomas, Bouland, Antonin, Porcheron, Emmanuel, Leblois, Yohan, Journeau, Christophe, Berlemont, Romain   +6 more
core   +1 more source

DECOMMISSIONING ROBOT MANIPULATOR FOR FUEL DEBRIS RETRIEVAL

Proceedings of the International Topical Workshop on Fukushima Decommissioning Research
Nobuto Matsuhira, Angela Faragasso, Kuniaki Kawabata   +2 more
exaly   +2 more sources

Aerosol Characterization During Heating and Mechanical Cutting of Simulated Uranium Containing Debris: the URASOL Project in the Framework of Fukushima Daiichi Fuel Debris Removal [PDF]

, 2023
International audienceOne of the important challenges for the decommissioning of the damaged reactors of the Fukushima Daiichi Nuclear Power Station (1F) is the fuel debris retrieval.
Bouland, Antonin, Ikeda-Ohno, Atsushi, Mitsugi, Takeshi, Porcheron, Emmanuel, Tsubota, Youichi, Journeau, Christophe, Delacroix, Jules, Berlemont, Romain, Lallot, Yvan   +8 more
core   +1 more source

FUEL DEBRIS PROTOTYPE FABRICATION, CUTTING AND AEROSOL COLLECTION IN VIEW OF FUKUSHIMA DAIICHI FUEL DEBRIS RETRIEVAL SAFETY [PDF]

Proceedings of the International Topical Workshop on Fukushima Decommissioning Research
International audienceOne of the keys of Fukushima Daiichi Nuclear Power Plant (1F) decommissioning steps is the estimation of the Airborne Release Fraction (ARF) during the removal of nuclear Fuel Debris (FD), to evaluate the potential exposure dose for
Bouyer, Viviane, Journeau, Christophe, Denoix, Arthur, Brissonneau, Laurent, Guévar, Célia, Faure, Joël, Brackx, Emmanuelle, Porcheron, Emmanuel, Alage, Stéphanie, Berlemont, Romain, Bouland, Antonin, Lallot, Yvan, Koyama, Tadafumi, Nakamura, Kinya, Kanai, Taizo, Uozumi, Koichi   +15 more
openaire   +2 more sources

EVALUATION OF AIRBORNE RELEASE BEHAVIORS DURING CUTTING FUEL DEBRIS FOR FUTURE SAFETY ASSESSMENT OF FUEL DEBRIS RETRIEVAL

Proceedings of the International Topical Workshop on Fukushima Decommissioning Research
Koichi Uozumi, Kinya Nakamura, Tadafumi Koyama   +2 more
exaly   +2 more sources

Chemical composition of aerosols generated by heating prototypic fuel debris samples [PDF]

, 2023
Part of special issueNuMat2022: The Nuclear Materials Conference, Edited by Milan Konstantinovic - Institute of Nuclear Materials Science, Belgian Nuclear Research Centre (SCK-CEN), Boeretang 200, Mol, B-2400, BelgiumOne of the important challenges for ...
Emmanuelle Brackx, Guevar, Célia, Ikeda-Ohno, Atsushi, Testud, Veronique, Porcheron, Emmanuel, Brackx, Emmanuelle, Romain Berlemont, Journeau, Christophe, Jules Delacroix, Bouland, Antonin, Emmanuel Porcheron, Christophe Journeau, Antonin Bouland, Delacroix, Jules, Véronique Testud, Célia Guévar, Atsushi Ikeda-Ohno, Berlemont, Romain   +17 more
core   +1 more source

Uranium dissolution and uranyl peroxide formation by immersion of simulated fuel debris in aqueous H₂O₂ solution [PDF]

, 2022
The fuel debris generated in the accident at the Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Station has been subject to water and ionizing radiation for years and will be until retrieval.
Yuta Kumagai (2492911), Ryoji Kusaka (1370445), Takayuki Sasaki (779709), Masami Nakada (12174701), Nobuaki Sato (3511805), Masayuki Watanabe (490746), Daisuke Akiyama (4692193), Akira Kirishima (3610517)   +7 more
core   +1 more source

Validation of free-convective heat transfer analysis with JUPITER to evaluate air-cooling performance of fuel debris in dry method

Mechanical Engineering Journal, 2018
A dry method is one of fuel debris retrieval methods for decommissioning of TEPCO’s Fukushima Daiichi nuclear power station. However, the cooling of fuel debris must be fully maintained without water.
Shinichiro UESAWA, Susumu YAMASHITA, Mitsuhiko SHIBATA, Hiroyuki YOSHIDA   +3 more
doaj   +1 more source