Main results of the European PASSAM project on severe accident source term mitigation

Albiol, T.; Herranz, L.E.; Riera, Enrique; Dalibart, C.; Lind, Terttaliisa; Corno, Ada Del; Kärkelä, Teemu; Losch, Norbert; Azambre, B.; Mun, Christian; Cantrel, Laurent

doi:10.1016/j.anucene.2018.02.024

Cited by 28 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The development of efficient adsorbents for high-temperature capture of CH 3 I remains a pressing yet challenging research objective. Furthermore, although irreversible capture is preferred in extreme situations like nuclear accidents to prevent the re-emission of radioactive materials 8 , adsorbents that are easily regenerable hold significant value in most other scenarios.…”

Section: Introductionmentioning

confidence: 99%

Strategies for high-temperature methyl iodide capture in azolate-based metal-organic frameworks

Pan,

Yang,

Dong

et al. 2024

Nat Commun

View full text Add to dashboard Cite

Efficiently capturing radioactive methyl iodide (CH3I), present at low concentrations in the high-temperature off-gas of nuclear facilities, poses a significant challenge. Here we present two strategies for CH3I adsorption at elevated temperatures using a unified azolate-based metal-organic framework, MFU-4l. The primary strategy leverages counter anions in MFU-4l as nucleophiles, engaging in metathesis reactions with CH3I. The results uncover a direct positive correlation between CH3I breakthrough uptakes and the nucleophilicity of the counter anions. Notably, the optimal variant featuring SCN- as the counter anion achieves a CH3I capacity of 0.41 g g−1 at 150 °C under 0.01 bar, surpassing all previously reported adsorbents evaluated under identical conditions. Moreover, this capacity can be easily restored through ion exchange. The secondary strategy incorporates coordinatively unsaturated Cu(I) sites into MFU-4l, enabling non-dissociative chemisorption for CH3I at 150 °C. This modified adsorbent outperforms traditional materials and can be regenerated with polar organic solvents. Beyond achieving a high CH3I adsorption capacity, our study offers profound insights into CH3I capture strategies viable for practically relevant high-temperature scenarios.

show abstract

Section: Introductionmentioning

confidence: 99%

Strategies for high-temperature methyl iodide capture in azolate-based metal-organic frameworks

Pan,

Yang,

Dong

et al. 2024

Nat Commun

View full text Add to dashboard Cite

show abstract

“…The effect of pool scrubbing under two different mass fluxes (63 and 780 kg/m 2 s) and particle sizes in four sets of experiments with nitrogen as the carrier gas was investigated. The RSE experiments were completed within the framework of the EU-PASSAM project of Italy to study the effect of pool scrubbing in natural water and seawater and in the presence of additives under the air jet regime (Albiol et al, 2018;Herranz et al, 2018b). PSP experiments were carried out by CIEMAT within the framework of the EU-PASSAM project (Herranz et al, 2018a) to study the effect of pool scrubbing under a single-hole injector at steam mass fraction lower than 10% and mass fluxes in the range of 74-152 kg/m 2 s. In recent years, more and more institutions have also paid attention to the pool scrubbing process again.…”

Section: Introductionmentioning

confidence: 99%

Influence of Jet on Aerosol Retention by Pool Scrubbing Under Multihole Injector

Cao

2022

Front. Energy Res.

View full text Add to dashboard Cite

In severe nuclear power plant accidents, when the containment is in a serious challenging state, the gas mixture in the containment can be injected into the spent fuel pool through the multihole injector by the containment depressurization measure, to reduce the risk of containment overpressure failure and the release of radioactivity to the environment. The pool scrubbing efficiency of aerosol under the jet regime is studied on the small-scale aerosol pool scrubbing facility, focusing on the influence of mass flux, steam fraction, submergence, particle diameter, and pool initial temperature on the aerosol decontamination factor (DF). The results show that under the jet regime, the DF value is significantly greater than that in the bubble regime and the effect of jet flow on the mechanism of steam condensation and aerosol removal of the rising zone is weak under the conditions explored. DF increases with the increase of mass flux owing to the droplet interception and inertial collision aerosol removal mechanisms. Because the high pool temperature weakens the aerosol removal by steam condensation, DF decreases with the increase of initial pool temperature under the conditions explored. Based on the experimental data and the analysis of the removal mechanism under the jet regime, an empirical model of aerosol DF considering mass flux, steam fraction, pool temperature, submergence, and particle size is established and verified by the international experiments. The proposed model can be used to calculate DF in the process of containment overpressure discharge.

show abstract

“…This project extended from 2013 to 2016 [8]. It was coordinated by IRSN and it involved 9 partners from 6 countries: IRSN, EDF and University of Lorraine (France); CIEMAT and CSIC (Spain); PSI (Switzerland); RSE (Italy); VTT (Finland) and AREVA GmbH (Germany).…”

Section: Passam (Passive and Active Systems On Severe Accident Sourcementioning

confidence: 99%

Trends in severe accident research in Europe: SARNET network from Euratom to NUGENIA

Dorsselaere

Bréchignac

Rosa

et al. 2017

EPJ Nuclear Sci. Technol.

View full text Add to dashboard Cite

Abstract. SARNET (Severe Accident Research Network) was set up under the aegis of the Framework Programmes of the European Commission from 2004 to 2013 and coordinated by IRSN to perform R&D on severe accidents in water-cooled nuclear power plants. The network self-sustainability was achieved through integration mid-2013 in the NUGENIA European association devoted to R&D on fission technology of Generation II and III. The SARNET activities continue in the technical area "Severe accidents" through technical workshops, ranking of R&D priorities, improvements of severe accident codes, ERMSAR international conferences, and education and training courses. Six technical domains are addressed in this technical area: in-vessel corium/debris coolability, exvessel corium interactions and coolability, containment behaviour including hydrogen risk, source term released to the environment, impact of severe accidents on the environment and emergency management, and severe accident scenarios. The ranking of research priorities in the NUGENIA R&D roadmap that was published in 2015 underlined the need to focus efforts in the next years on the improvement of prevention of severe accidents and on the mitigation of their consequences, as highlighted by the Fukushima Dai-ichi accidents. Several current projects on mitigation of severe accident consequences in Euratom or NUGENIA frame are shortly described in this paper.

show abstract

Main results of the European PASSAM project on severe accident source term mitigation

Cited by 28 publications

References 14 publications

Strategies for high-temperature methyl iodide capture in azolate-based metal-organic frameworks

Strategies for high-temperature methyl iodide capture in azolate-based metal-organic frameworks

Influence of Jet on Aerosol Retention by Pool Scrubbing Under Multihole Injector

Trends in severe accident research in Europe: SARNET network from Euratom to NUGENIA

Contact Info

Product

Resources

About