| Title: |
Outcomes of the Experimental and Numerical Work on the Operational Behavior of Passive Autocatalytic Recombiners in the Late Phase of a Severe Accident in the Framework of the AMHYCO Project |
| Authors: |
Ernst-Arndt, Reinecke; Gabriela, Nobrega; Bentaib, Ahmed; Araceli, Dominguez-Bugarin; Gonzalo, Jimenez; Matthias, Braun; Stephan, Struth; Claudia, Druska; Michael, Klauck |
| Contributors: |
Forschungszentrum Jülich GmbH; Helmholtz-Gemeinschaft = Helmholtz Association; Service des Accidents Majeurs (ASNR/PSN-RES/SAM); Autorité de Sûreté Nucléaire et de Radioprotection (ASNR); Universidad Politécnica de Madrid (UPM); Framatome GmbH; GTR IRSN - Agressions internes et industrielles - Incendie explosion (D1P10); European Project: 945057,NFRP-2019-2020,NFRP-2019-2020,AMHYCO(2020) |
| Source: |
https://hal.science/irsn-04873680 ; 2025. |
| Publisher Information: |
CCSD |
| Publication Year: |
2025 |
| Collection: |
IRSN (Institut de Radioprotection et de Sûreté Nucléaire): Publications (HAL |
| Subject Terms: |
Ex-vessel; Hydrogen Mitigation; Passive Autocatalytic Recombiners; Carbon Monoxide; Experiments; Simulation Yours sincerely; (Ernie Reinecke) Ihr Zeichen: Ihre Nachricht vom: Unser Zeichen: Unsere Nachricht vom: Ansprechpartner: Dr. Reinecke Organisationseinheit: IET-4 Severe Accident; Simulation; Severe Accident; Severe Accident Ex-vessel Hydrogen Mitigation Passive Autocatalytic Recombiners Carbon Monoxide Experiments Simulation Yours sincerely (Ernie Reinecke) Ihr Zeichen: Ihre Nachricht vom: Unser Zeichen: Unsere Nachricht vom: Ansprechpartner: Dr. Reinecke Organisationseinheit: IET-4 Severe Accident Ex-vessel Hydrogen Mitigation Passive Autocatalytic Recombiners Carbon Monoxide Experiments Simulation; [SPI]Engineering Sciences [physics] |
| Description: |
International audience ; The molten corium-concrete interaction in the ex-vessel phase of a severe accident ina light water reactor is a source of significant amounts of gaseous products includingcarbon monoxide. The European project AMHYCO addresses open issues related tothe understanding of the impact of carbon monoxide on safety-relevant accidentphenomena like combustion and on hydrogen mitigation measures. In order to supportthe simulation of accident sequences and the assessment of safety measures, Task3.2 aimed to provide realistic models considering the influence of carbon monoxide onthe operating behavior of passive auto-catalytic recombiners. The work programincluded conducting new experiments, analyzing existing experimental data, andfurther developing numerical models.The experimental program performed within Task 3.2 involved the REKO facilities atResearch Center Jülich (FZJ) to study the impact of predicted accident atmospheresincluding oxygen-lean mixtures and the presence of carbon monoxide on the hydrogenrecombination efficiency of different generic catalysts. More specifically, criteria werederived to predict the atmospheric conditions leading to catalyst poisoning. At thesame time, a unified database including selected datasets from the variousOECD/NEA-THAI projects was developed. The available experimental data were usedto further advance numerical models such as the manufacturer’s engineeringcorrelation for Framatome PARs as well as the scientific codes SPARK (IRSN),PARUPM (UPM), and REKO-DIREKT (FZJ). |
| Document Type: |
report |
| Language: |
English |
| Relation: |
info:eu-repo/grantAgreement//945057/EU/TOWARDS AN ENHANCED ACCIDENT MANAGEMENT OF THE HYDROGEN/CO COMBUSTION RISK/AMHYCO |
| Availability: |
https://hal.science/irsn-04873680; https://hal.science/irsn-04873680v1/document; https://hal.science/irsn-04873680v1/file/ANUCENE-S-24-01890.pdf |
| Rights: |
https://creativecommons.org/licenses/by-nc-nd/4.0/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.F3E500B2 |
| Database: |
BASE |