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Influence of SIC control rod material on the iodine release in case of nuclear severe accident – Chemical reactivity with fission products in thermal conditions of RCS. ANN NUCL ENERGY 2022. [DOI: 10.1016/j.anucene.2021.108900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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2
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Osaka M, Gouëllo M, Nakajima K. Cesium Chemistry in the LWR severe accident and towards the decommissioning of Fukushima Daiichi Nuclear Power Station. J NUCL SCI TECHNOL 2021. [DOI: 10.1080/00223131.2021.1997664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Masahiko Osaka
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Mélany Gouëllo
- Severe Accident Analysis, VTT Technical Research Centre of Finland Ltd, Finland
| | - Kunihisa Nakajima
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan
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3
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Kim M, Kim J, Yeon JW. Concentration determination of I2 and I− formed by thermal and radiolytic decomposition of NaIO3. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07822-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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4
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Obada D, Hijazi H, Paul JF, Gasnot L, Grégoire AC, Mamede AS, Cantrel L. Chemical stability of caesium iodide deposits in air/steam atmosphere. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124519. [PMID: 33229263 DOI: 10.1016/j.jhazmat.2020.124519] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/10/2020] [Accepted: 10/23/2020] [Indexed: 06/11/2023]
Abstract
Iodine compounds that may be released in case of severe nuclear accident will have important radiotoxicity if they are disseminated in air. One of the most important iodine species is CsI that is deposited on the surfaces of the reactor coolant system. However, depending on the conditions, CsI can volatilize or react with oxidants to produce I2(g). Theoretical and experimental studies demonstrate that the oxidation of iodide depends on the temperature and in the presence of oxidants in the gas. It is also slightly influenced by the crystallinity of the CsI particles and the nature of the support. In case of a high temperature deposition, the iodine release started at temperature lower than 300 °C. For the CsI vapour and aerosol depositions, the iodine is detected only at temperature above 450 °C and become very important above 550 °C.
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Affiliation(s)
- D Obada
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Sûreté Nucléaire, CEN Cadarache, Saint Paul lez Durance F-13115, France; Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - H Hijazi
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Sûreté Nucléaire, CEN Cadarache, Saint Paul lez Durance F-13115, France; Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - J-F Paul
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France.
| | - L Gasnot
- Univ. Lille, CNRS, UMR 8522 - PC2A - Physicochimie des Processus de Combustion et de l'Atmosphère, F-59000 Lille, France
| | - A-C Grégoire
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Sûreté Nucléaire, CEN Cadarache, Saint Paul lez Durance F-13115, France
| | - A-S Mamede
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - L Cantrel
- Institut de Radioprotection et de Sûreté Nucléaire, Pôle Sûreté Nucléaire, CEN Cadarache, Saint Paul lez Durance F-13115, France
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Gouëllo M, Hokkinen J, Kärkelä T. Advances in the understanding of molybdenum effect on iodine and caesium reactivity in condensed phase in the primary circuit in nuclear severe accident conditions. NUCLEAR ENGINEERING AND TECHNOLOGY 2020. [DOI: 10.1016/j.net.2020.01.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Miyahara N, Miwa S, Gouëllo M, Imoto J, Horiguchi N, Sato I, Osaka M. Experimental study on transport behavior of cesium iodide in the reactor coolant system under LWR severe accident conditions. J NUCL SCI TECHNOL 2020. [DOI: 10.1080/00223131.2020.1782281] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Naoya Miyahara
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Shuhei Miwa
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Mélany Gouëllo
- Nuclear Energy, Technical Research Centre of Finland Ltd., Finland
| | - Junpei Imoto
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Naoki Horiguchi
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan
| | - Isamu Sato
- Graduate School of Engineering, Tokyo City University, Tokyo, Japan
| | - Masahiko Osaka
- Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Ibaraki, Japan
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Knebel K, Jokiniemi J, Bottomley PD. A review of revaporisation behaviour of radioactive Cs deposits and its impact on the source term in severe nuclear accidents from Phébus FP results and single effect testing. J NUCL SCI TECHNOL 2018. [DOI: 10.1080/00223131.2018.1558130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Kevin Knebel
- JRC-Karlsruhe, Nuclear Safety & Security, Nuclear Decommissioning Department, Karlsruhe, Germany
- JEN Jülicher Entsorgungsgesellschaft für Nuklear Anlagen mbH, Dekontamination und Entsorgung, Jülich, Germany
| | | | - Paul David Bottomley
- JRC-Karlsruhe, Nuclear Safety & Security, Nuclear Decommissioning Department, Karlsruhe, Germany
- CLADS Laboratories, Japan Atomic Energy Agency, Naka-gun, Japan
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8
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Contribution to the understanding of iodine transport under primary circuit conditions: Csi/Cd and Csi/Ag interactions in condensed phase. NUCLEAR MATERIALS AND ENERGY 2018. [DOI: 10.1016/j.nme.2018.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Cantrel L, Albiol T, Bosland L, Colombani J, Cousin F, Grégoire AC, Leroy O, Morin S, Mun C, Ohnet MN, Souvi S, Monsanglant-Louvet C, Louis F, Azambre B, Volkringer C. Research Works on Iodine and Ruthenium Behavior in Severe Accident Conditions. JOURNAL OF NUCLEAR ENGINEERING AND RADIATION SCIENCE 2018. [DOI: 10.1115/1.4038223] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This paper deals with near past, ongoing, and planned R&D works on fission products (FPs) behavior in reactor cooling system (RCS), containment building and in filtered containment venting systems (FCVS) for severe accident (SA) conditions. All the researches are collaborative works; the overall objective is to develop confident models to be implemented in simulation software. After being initiated in 2004, researches on iodine transport through the RCS are still ongoing and for containment, the last advances are linked to the source term (ST) evaluation and mitigation (STEM) OECD/NEA project. The objective is to improve the evaluation of ST for a SA on a nuclear power plant and to reduce uncertainties on specific phenomena dealing with the chemistry of two major FPs: iodine and ruthenium. For ruthenium attention has been paid to study the amount and nature (gas/aerosol partition) of ruthenium species along the RCS. A follow-up, called STEM2, has started to reduce some remaining issues and be closer to reactor conditions. For FCVS works, the efficiencies for trapping iodine covering scrubbers and dry filters are examined to get a clear view of their abilities in SA conditions. Another part is focused on specific porous materials able to trap volatile iodine. Influence of zeolite materials parameters (nature of the counter-ions, structure, Si/Al ratio…) are tested as well as new kind of porous materials constituted by Metal organic Frameworks will also be looked at.
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Affiliation(s)
- Laurent Cantrel
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Thierry Albiol
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Loïc Bosland
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Juliette Colombani
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Frédéric Cousin
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Anne-Cécile Grégoire
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Olivia Leroy
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Sandrine Morin
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Christian Mun
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Marie-Noëlle Ohnet
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Sidi Souvi
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Cadarache, Saint-Paul lez Durance 13115, France e-mail:
| | - Céline Monsanglant-Louvet
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PNS-RES, Saclay 91192, Gif-sur-Yvette, France e-mail:
| | - Florent Louis
- PC2A, PhysicoChimie des Processus de Combustion et de l'Atmosphère, University of Lille, UMR 8552, CNRS, Lille 59000, France e-mail:
| | - Bruno Azambre
- LCP-A2MC, Institute Jean-Barriol, University of Lorraine, FR2843 CNRS, Rue Victor Demange, Saint-Avold 57500, France e-mail:
| | - Christophe Volkringer
- UCCS, UMR CNRS 8181, ENSCL, Université de Lille, Villeneuve d'Ascq 59655, France e-mail:
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Do TMD, Sujatanond S, Ogawa T. Behavior of cesium molybdate, Cs2MoO4, in severe accident conditions. (1) Partitioning of Cs and Mo among gaseous species. J NUCL SCI TECHNOL 2017. [DOI: 10.1080/00223131.2017.1397560] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Thi-Mai-Dung Do
- Nuclear System Safety Engineering, Nagaoka University of Technology, Nagaoka, Japan
| | - Supamard Sujatanond
- Department of Industrial Engineering, Thammasat University, Klongluang, Thailand
| | - Toru Ogawa
- Collaborative Laboratories for Advanced Decommissioning Science, Japan Atomic Energy Agency, Futaba, Fukushima, Japan
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Chatelard P, Belon S, Bosland L, Carénini L, Coindreau O, Cousin F, Marchetto C, Nowack H, Piar L, Chailan L. Main modelling features of the ASTEC V2.1 major version. ANN NUCL ENERGY 2016. [DOI: 10.1016/j.anucene.2015.12.026] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Di Giuli M, Haste T, Biehler R, Bosland L, Herranz L, Fontanet J, Beuzet E, Torkhani M, Davidovich N, Klein-Heßling W, Weber S, Dickinson S, Horváth G, Kruse P, Koch M, Paci S, Weber S, Salay M, Bujan A, Ivanov I, Kalychev P, Kim S, Morandi S, Del Corno A, Kotouč M, Dienstbier J, Kim HC. SARNET benchmark on Phébus FPT3 integral experiment on core degradation and fission product behaviour. ANN NUCL ENERGY 2016. [DOI: 10.1016/j.anucene.2016.01.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Haste T, Di Giuli M, Weber G, Weber S. Iodine Benchmarks in the SARNET Network of Excellence. JOURNAL OF NUCLEAR ENGINEERING AND RADIATION SCIENCE 2016. [DOI: 10.1115/1.4031652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Accurate calculation of iodine behavior in the containment is very important in determining the potential radioactive release to the environment in light water reactor severe accidents (SAs). Of particular significance is the behavior of gas phase iodine, particularly organic iodine, which is difficult to remove by filtration, e.g., in containment venting systems. Iodine behavior is closely linked with the containment thermal hydraulics, which have a major influence on the distribution of iodine throughout the containment atmosphere and sump. In the European 7th Framework SARNET project, European Commission (EC) cofunded from 2007 to 2013, SA modeling code capability was assessed through two integral benchmarks. In the first, the basis was the German THAI Iod-11/12 tests, where molecular iodine transport with atmospheric flows and iodine interactions with steel surfaces were emphasized. In the second, data from the international Phébus FPT3 test were used, where all aspects of SAs were studied from core degradation, fission product (FP) release, circuit transport/deposition, and containment behavior using realistic FP sources. Thermal hydraulics in the containment were simpler, being well-mixed, and radiolytic interactions of iodine, e.g., with painted surfaces, were studied. These interactions may be an important source of organic iodine in the containment atmosphere. The two benchmarks are thus complementary. In the FPT3 exercise, the calculations could predict the containment thermal hydraulic conditions fairly well. For the more detailed data from THAI, differences were noted for atmospheric flows and relative humidities, outside experimental uncertainties, affecting iodine behavior. The FPT3 iodine results themselves showed a spread in calculated results outside data uncertainties, indicating the need for model improvements in this area, e.g., for radiolytic interaction of iodine with paint. Experimental programs to generate the necessary data needed for code improvement have been recently completed, e.g., in the OECD/THAI, THAI2, BIP, and BIP2 projects, or are in progress, in OECD/STEM and EC/PASSAM. When model improvements have been made, repeat benchmarks are planned to check progress toward code convergence with experimental data, e.g., under the aegis of the new NUGENIA association of which SARNET now forms a part.
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Affiliation(s)
- Tim Haste
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Centre d’Etudes de Cadarache, BP 3-13115, Saint-Paul-Lez-Durance Cedex, France e-mail:
| | - Mirco Di Giuli
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Centre d’Etudes de Cadarache, BP 3-13115, Saint-Paul-Lez-Durance Cedex, France e-mail:
| | - Gunter Weber
- Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH, Boltzmannstraße 14, 85748 Garching bei München, Germany e-mail:
| | - Sebastian Weber
- Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH, Boltzmannstraße 14, 85748 Garching bei München, Germany e-mail:
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15
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Recent advances in the source term area within the SARNET European severe accident research network. NUCLEAR ENGINEERING AND DESIGN 2015. [DOI: 10.1016/j.nucengdes.2015.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Grégoire AC, Kalilainen J, Cousin F, Mutelle H, Cantrel L, Auvinen A, Haste T, Sobanska S. Studies on the role of molybdenum on iodine transport in the RCS in nuclear severe accident conditions. ANN NUCL ENERGY 2015. [DOI: 10.1016/j.anucene.2014.11.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kalilainen J, Kärkelä T, Zilliacus R, Tapper U, Auvinen A, Jokiniemi J. Chemical reactions of fission product deposits and iodine transport in primary circuit conditions. NUCLEAR ENGINEERING AND DESIGN 2014. [DOI: 10.1016/j.nucengdes.2013.11.078] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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