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First Step in the Investigation of Hydrogen Recombiners Efficiency According to Their Location in Nuclear Power Plants

[+] Author Affiliations
N. Meynet, A. Bentaib, A. Bleyer, C. Caroli

Institut de Radioprotection et Sûreté Nucléaire, Fontenay-aux-Roses, France

Paper No. ICONE16-48594, pp. 623-637; 15 pages
  • 16th International Conference on Nuclear Engineering
  • Volume 3: Thermal Hydraulics; Instrumentation and Controls
  • Orlando, Florida, USA, May 11–15, 2008
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-4816-7 | eISBN: 0-7918-3820-X
  • Copyright © 2008 by ASME


Passive Autocatalytic Recombiners (PAR) are used as a mitigation measure for hydrogen risk in pressurized water reactors (PWR). They aim to remove hydrogen by its exothermic catalytic recombination into steam, and to maintain local hydrogen concentration below deflagration-detonation transition limit. This study deals with PAR efficiency for removing hydrogen and mixing containment atmosphere, according to their location inside the containment. The competition of physical phenomena as free and forced convection and condensation is considered on the basis of simplified geometry and scenarios.

Copyright © 2008 by ASME



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