Achievement

FY2019

Awards

International Workshop on Fukushima Decommissioning Research（FDR2019）

Selected paper: A.Itoh, Y.Kobayashi (TokyoTech), A.Suzuki (NFD), T.Sato, N.Shirasu, Y.Nagae, M.Kurata (JAEA), “Modeling of UO2 interaction with Zr at high temperature”.

AESJ Fall Meeting

J.Li, Poster award：Determination of Gibbs Free Energy of Formation of Ni-rich Precipitate in Reactor Pressure Vessel of Light Water Reactor by Electromotive Force Measurement

178th ISIJ Meeting

Special poster award: K.Fujiwara and Y.Kobayashi, “Influence of cooling rate on the cupper districution of Fe-C-Cu-S steel scrap”

Domestic Conference

178th ISIJ Meeting

1. C.Kato, Z.Li and Y.Kobayashi, “Dependencies of oxygen partial pressure and Basicity on CrOx solubility in CaO-SiO2-CrOx slug”, The 178th ISIJ meeting (2019).
2. Z.Li, C.Kato and Y.Kobayashi, “Determination of CrOx activity in CaO-SiO2-CrOx slag under reducing condition”, The 178th ISIJ meeting (2019).
3. R.Nakazawa and Y.Kobayashi, “Thermodynamic properties of Sm-O system for high coercivity material design”, The 178th ISIJ meeting (2019).
4. K.Fujiwara and Y.Kobayashi, “Influence of cooling rate on the cupper distribution of Fe-C-Cu-S steel scrap”, Poster session of the 178th ISIJ meeting (2019).
5. Z.Li and Y.Kobayashi, “Activity measurement of CrOx in CaO-SiO2-CrOx slug under low oxygen partial pressure”, JSEM meeting (2019).

AESJ Fall Meeting

1. J.Li, “Determination of Gibbs Free Energy of Formation of Ni-rich Precipitate in Reactor Pressure Vessel of Light Water Reactor by Electromotive Force Measurement”, Poster session of AESJ Fall meeting (2019).
2. H.Chen and Y.Kobayashi, “Thermodynamic evaluation of Cs2O-B2O3 binary system”, JSEM meeting (2019).

International Conference

The NuFuel-MMSNF workshop

Y.Kobayashi, Thermodynamic properties of Fe-Zr-O system high temperatures”

25th QUENCH workshop

A.Itoh, Y.Kobayashi, Y.Nagae and M.Kurata, “Physicochemical interaction between U-Zr-O melt and Fe-based structure during core degradation”

International Workshop on Fukushima Decommissioning Research（FDR2019）

A.Itoh, Y.Kobayashi (TokyoTech), A.Suzuki (NFD), T.Sato, N.Shirasu, Y.Nagae, M.Kurata (JAEA), “Modeling of UO2 interaction with Zr at high temperature”.

Papers

• Itoh, A., et al. “The release behavior of boron and silicon from degraded absorber rods on core degradation during BWR severe accident.” Journal of Nuclear Materials 514 (2019): 101-108.
• Li, Jiajun, and Yoshinao Kobayashi. “A New Design of Oxygen Sensor for Electromotive Force Measurement and Electrochemical Deoxidation by Using Oxygen Pump.” ISIJ International (2020): ISIJINT-2019.

Year 2018

Awards

 

Engineering Education Awards 2018（2019.9.4）

Paper Award

Mr. Takehiro Sumita & Prof. Kayoko Nohara ‘s paper (Analysis of Seminar Formation Factors and Their Relevance in Science and Engineering Education based on Skopos Theory)

IRID symposium 2018（2018.8.2）

Oral Presentation

Mr. Takehiro Sumita “Best Presentation Award”.

Conference for R&D Initiative on Nuclear Decommissioning Technology by the Next Generation (NDEC-3) at Tomioka Town Art Media Center, Fukushima

Oral Presentation

Mr. Takehiro Sumita “Best Frontier Spirit Award” and “Research Encouragement Award”.

 

Annual Meeting of Iron and Steel Institute of Japan (ISIJ) Spring 2018 at Chiba Institute of Technology, Chiba

Research group (Chief examiner: Prof. Yoshinao Kobayashi) :Yamaoka Prize

Conference Presentation and Published Article

 

Annual Meeting of Atomic Energy Society Japan (AESJ) Autumn 2018 at Okayama University

Oral Presentation

Mr. Takehiro Sumita: “Melting behavior of reactor core during severe accident of BWR (1) Fracture behavior of stainless structure materials by molten metallic and oxidic corium”. (2018.09.05)

IRID symposium 2018（2018.8.2）

Oral Presentation

Mr. Takehiro Sumita “流れのあるメタル系溶融デブリ中でのステンレス構造物破損速度の検討”.

2nd TITECH-CRIEPI-JAEA Joint Workshop -R&D Updated on Fuel Debris and FP Behavior During Severe Accidents – at CRIEPI Head Quarter (Tokyo)

Oral Presentation

Mr. Takehiro Sumita: “Corrosion-erosion of solid stainless steel by molten metallic corium: experimental investigation”. (2018.07.4)

Ms. Ayumi Itoh: “Thermodynamic evaluation of B and Si release during control blade degradation”. (2018.07.4)

Poster Presentation

Annual Meeting of Atomic Energy Society Japan (AESJ) Spring 2018 at Osaka University

Oral Presentation

Mr. Takehiro Sumita: “The Fracture Behavior of Solid SS by Molten SS-B₄C Eutectic Melt under the Dynamic Condition”. (2018.03.27)

Dr. Jiang Liu: “Study on the Damage of Core Internals in Nuclear Reactor During Severe Accident”. (2018.03.28)

Annual Meeting of Iron and Steel Institute of Japan (ISIJ) Spring 2018 at Chiba Institute of Technology, Chiba

Oral Presentation

Mr. Li: “Measurement of Thermodynamics Properties on Oxygen in M-O System by Electrical Method Using Zirconia Solid Electrolyte”. (2018.03.19)

Poster Presentation

Mr. Kato: “Solubility of CrO_x in CaO-SiO₂-CrO_x slag at low oxygen partial pressure”. (2018.03.20)

Conference for R&D Initiative on Nuclear Decommissioning Technology by the Next Generation (NDEC-3) at Tomioka Town Art Media Center, Fukushima

Oral Presentation

Mr. Takehiro Sumita: “Investigation of the fracture behavior of reactor structure materials by molten metallic corium”. (2018.03.19)

“Best Frontier Spirit Award” and “Research Encouragement Award”

Poster Presentation

Mr. Rizky: “Thermodynamics of Cs₂O-SiO₂ System”. (2018.03.19)

Published paper

Takehiro Sumita, Yoshinao Kobayashi. Quantitative Analysis Method for Determination of Boron Concentration in Stainless Steel-B₄C Alloy by ICP-OES, Journal of the Japanese Society for Experimental Mechanics, Vol. 18, No. 4, pp. 247-249, Jan. 2019.

Takehiro Sumita, Yoshinao Kobayashi. Investigation of corrosion-erosion behavior of stainless steel considering SS-B4C melt, Journal of Nuclear Materials, Vol. 515, pp. 71-79, Mar. 2019.

Ayumi Itoh, Takehiro Sumita, Masanori Kajihara, yoshinao kobayashi.  The release behavior of boron and sil