Search Results - "Nagae, Yuji"

BWR lower head penetration failure test focusing on eutectic melting by Yamashita, Takuya, Sato, Takumi, Madokoro, Hiroshi, Nagae, Yuji

“…•Depending on the condition of a melt pool forming in the lower plenum, eutectic melting can damage the boundary of the LH without a high temperature.•Molten…”
Get full text

The key role of sample analysis in Fukushima Dai-Ichi decommissioning, debris management, and accident progression investigation by Zubekhina, Bella, Pshenichnikov, Anton, Nagae, Yuji, Kurata, Masaki

“…This review is an up-to-date report of the analysis of U-bearing samples from the Fukushima Daiichi Nuclear Power Station (1F). It summarizes the experience…”
Get full text

Segregation behavior of Fe and Gd in molten corium during solidification progress by Sudo, Ayako, Meszaros, Bence, Poznyak, Igor, Sato, Takumi, Nagae, Yuji, Kurata, Masaki

“…For a criticality assessment of the fuel debris generated by the Fukushima–Daiichi Nuclear Power Plant accident, knowing the segregation of neutron absorber…”
Get full text

New insight on the thermal impact on cementitious materials due to high-temperature with water supply: Continuous expansive spalling in water by Miura, Taito, Miyamoto, Shintaro, Maruyama, Ippei, Aili, Abudushalamu, Sato, Takumi, Nagae, Yuji, Igarashi, Go

“…In this study, the expansion behavior of cement materials after high-temperature heating and water immersion was observed experimentally. Two experiments were…”
Get full text

Oxidation kinetics of silicon carbide in steam at temperature range of 1400 to 1800 °C studied by laser heating by Pham, Hai Vu, Nagae, Yuji, Kurata, Masaki, Bottomley, David, Furumoto, Kenichiro

“…As expected for accident tolerant fuels, the investigation of steam oxidation for silicon carbide under beyond design basis accident scenarios is needed. Many…”
Get full text

Raman characterization of the simulated control blade debris to understand the boric compounds transformations during severe accidents by PSHENICHNIKOV, Anton, NAGAE, Yuji, KURATA, Masaki

“…In order to address the challenge of the future Fukushima Dai-Ichi Nuclear Power Station (1F) debris characterization a new Raman spectroscopy investigation of…”
Get full text

Irradiation damages of structural materials under different irradiation environments by Wakai, Eiichi, Takaya, Shigeru, Matsui, Yoshinori, Nagae, Yuji, Kato, Shoichi, Suzudo, Tomoaki, Yamaguchi, Masataka, Aoto, Kazumi, Nogami, Shuhei, Hasegawa, Akira, Abe, Hiroaki, Sato, Koichi, Ishida, Taku, Makimura, Shunsuke, Hurh, Patrick G., Ammigan, Kavin, Senor, David J., Casella, Andrew M., Edwards, Danny J.

“…For the advancement and development of nuclear systems used in heavy irradiation environments such as fusion DEMO reactors, fission reactors, fast reactors,…”
Get full text

On the degradation progression of a BWR control blade under high-temperature steam-starved conditions by PSHENICHNIKOV, Anton, NAGAE, Yuji, KURATA, Masaki

“…High-temperature control blade degradation tests simulating a beginning phase of a severe accident in BWRs has been comprehensively performed in Japan Atomic…”
Get full text

Irradiation effect on mechanical properties in structural materials of fast breeder reactor plant by Nagae, Yuji, Takaya, Shigeru, Wakai, Eiichi, Aoto, Kazumi

“…The effects of displacement per atom (dpa) level, helium content, and the ratio of helium content to dpa level on the tensile and creep properties have been…”
Get full text

The results of the CLADS-MADE-03 BWR bundle degradation test in steam under 1F Unit 1 postulated conditions by Pshenichnikov, Anton, Nagae, Yuji

“…•A ZrO2 oxide layer can be dissolved at a double rate under certain conditions.•Additional details of B aerosols production mechanism were clarified.•Melt and…”
Get full text

Evaluation of creep–fatigue life based on fracture energy for modified 9Cr–1Mo steel by Nagae, Yuji

“…Preventing creep–fatigue damage is a major consideration in nuclear power plants, which operate at high temperatures. Energy absorbed during creep–fatigue…”
Get full text

Comparison of the observed Fukushima Dai-Ichi Unit 2 debris with simulated debris from the CLADS-MADE-01 control blade degradation test by Pshenichnikov, Anton, Nagae, Yuji, Kurata, Masaki

“…In February 2019, TEPCO and TOSHIBA designed a robot that can handle the debris, performed a trial investigation of primary containment vessel (PCV) of the…”
Get full text

A BWR control blade degradation observed in situ during a CLADS-MADE-02 test under Fukushima Dai-Ichi Unit 3 postulated conditions by Pshenichnikov, Anton, Kurata, Masaki, Nagae, Yuji

“…The paper summarizes the results of the control blade degradation test CLADS-MADE-02 performed in the Japan Atomic Energy Agency . The test focused on the…”
Get full text

Secondary hemophagocytic syndrome in a patient with methicillin-sensitive Staphylococcus Aureus bacteremia due to severe decubitus ulcer by Ito, Shigenori, Takada, Norio, Ozasa, Atsushi, Hanada, Mayumi, Sugiyama, Masaya, Suzuki, Kaoru, Nagae, Yuji, Inagaki, Toshiaki, Suzuki, Yayoi, Komatsu, Hirokazu

“…A 51-year-old man with poliomyelitis was admitted to emergency because of a severe decubitus ulcer on his right hip that was associated with infection. His…”
Get full text

Numerical simulation method using a Cartesian grid for oxidation of core materials under steam-starved conditions by Yamashita, Susumu, Sato, Takumi, Nagae, Yuji, Kurata, Masaki, Yoshida, Hiroyuki

“…We newly developed a detailed simulation method for the oxide layer growth/recession under steam-starved conditions using computational fluid dynamics (CFD)…”
Get full text

Ten years of Fukushima Dai-Ichi post-accident research on the degradation phenomenology of the BWR core components by Pshenichnikov, Anton, Shibata, Hiroki, Yamashita, Takuya, Nagae, Yuji, Kurata, Masaki

“…The paper reviews the results of the JAEA and some International activities over the last ten years of research on the understanding of the core components…”
Get full text

Thermodynamic analysis for solidification path of simulated ex-vessel corium by Sato, Takumi, Nagae, Yuji, Kurata, Masaki, Quaini, Andrea, Guéneau, Christine

“…Molten corium is considered to form in a severe accident at the Fukushima Daiichi Nuclear Power Station (FDNPS). Investigation of the primary containment…”
Get full text

New research programme of JAEA/CLADS to reduce the knowledge gaps revealed after an accident at Fukushima-1: introduction of boiling water reactor mock-up assembly degradation test programme by Pshenichnikov, Anton, Kurata, Masaki, Bottomley, David, Sato, Ikken, Nagae, Yuji, Yamazaki, Saishun

“…The new R&D programme of JAEA/CLADS tests complements the previous investigations related to BWR severe accidents. A series of tests aim at closing the gaps in…”
Get full text

Secondary Hemophagocytic Syndrome in a Patient with Methicillinsensitive Staphylococcus Aureus Bacteremia due to Severe Decubitus Ulcer by Ito, Shigenori, Takada, Norio, Ozasa, Atsushi, Hanada, Mayumi, Sugiyama, Masaya, Suzuki, Kaoru, Nagae, Yuji, Inagaki, Toshiaki, Suzuki, Yayoi, Komatsu, Hirokazu

“…A 51yearold man with poliomyelitis was admitted to emergency because of a severe decubitus ulcer on his right hip that was associated with infection. His…”
Get full text

Features of a control blade degradation observed in situ during severe accident conditions in boiling water reactors by Pshenichnikov, Anton, Yamazaki, Saishun, Bottomley, David, Nagae, Yuji, Kurata, Masaki

“…In the present paper, new results using in situ video are presented regarding boiling water reactor (BWR) control blade degradation up to 1750 K at the…”
Get full text