Development of an evaluation method for nuclear fuel debris–filtering performance
Nuclear Engineering and Technology, 2018 Fuel failure due to debris is a major cause of failure in pressurized water reactors. Fuel vendors have developed various filtering devices to reduce debris-induced failure and have evaluated filtering performance with their own test facilities and ...
Joon-Kyoo Park +2 more
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A new perspective into molten corium concrete interaction for interpreting Fukushima Dai-Ichi terrace-shaped debris [PDF]
Scientific ReportsThis paper compares open-source volcanic lava images with official TEPCO videos and reports. The fuel debris formation at Fukushima Dai-Ichi Nuclear Power Station (1F) Unit 1 shows similarities to natural lava flows at various volcanoes, including ...
A. P. Pshenichnikov
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Gamma-ray measurement for classification of fuel debris and waste [PDF]
EPJ Web of ConferencesThe detection of prompt fission gamma-rays and Tl-208 decay gamma-rays, which are unique to nuclear materials, could be applied to sorting nuclear fuel debris and radioactive waste from the Fukushima Daiichi Nuclear Power Plant.
Shiba Tomooki +2 more
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SUBCRITICALITY ESTIMATION BY VIRTUAL NEUTRON CAPTURE METHOD [PDF]
EPJ Web of Conferences, 2021 The criticality safety control technique is required for the fuel debris removal from the Fukushima Dai-Ichi Nuclear Power Station which experienced a severe accident.
Mitsuyasu Takeshi, Morimoto Yuichi
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EFFECT OF β ON EFFECTIVE MULTIPLICATION FACTOR IN 1/fβ SPECTRUM RANDOM SYSTEM [PDF]
EPJ Web of Conferences, 2021 We investigated the effect of β on effective multiplication factor(keff) in the 1/fβ spectrum random system. The random system was generated by the 1/fβ noise model.
Araki Shouhei +3 more
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Development of Robot Simulating Fuel Debris Retrieval
Journal of Robotics and Mechatronics, 2022 A creative robot contest for decommissioning was held as part of human resources development for decommissioning of the Fukushima Daiichi Nuclear Power Station of Tokyo Electric Power Co., Inc. In the 5th creative robot contest for decommissioning, robots were developed for fuel-debris retrieval from the lower part of the pedestal.
Shigekazu Suzuki +4 more
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ESTIMATED CRITICALITY LOWER-LIMIT MULTIPLICATION FACTOR OF LOW-ENRICHED URANIUM DIOXIDE-CONCRETE SYSTEM USING THE BOOTSTRAP METHOD [PDF]
EPJ Web of Conferences, 2021 The present paper aims to evaluate the estimated criticality lower-limit multiplication factor of fuel debris in a form of uranium dioxide-concrete mixture for a study of criticality control on the fuel debris generated through the molten core concrete ...
Hayashi Takuto +3 more
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Journal of Nuclear Science and Technology, 2021 During the decommissioning of the Fukushima Daiichi Nuclear Power Station, it is vital to ensure that work stays safely under the subcriticality state in order to protect workers and the public fro...
Takeshi Muramoto +2 more
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Investigation of the Outflow and Spreading-Solidification Behaviour of Stratified Molten Metal
Journal of Nuclear Engineering, 2021 The spreading-solidification behaviour of the stratified molten metals was investigated. This is important in understanding the practical fuel debris distribution spread and solidified in the primary containment vessel (PCV) of Fukushima Daiichi Nuclear ...
Ryo Yokoyama +4 more
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Artificial libration points in the task of towing space debris by an ion beam [PDF]
Известия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2021 The work is devoted to the problem of towing space debris from a geostationary orbit to a graveyard orbit by a non-contact method using an ion beam created by the engine of an active spacecraft.
Петухов, Вячеслав Георгиевич +1 more
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