Simulation of hydrogen deflagration and detonation in a BWR reactor building

Mikko Manninen, Ari Silde (Corresponding Author), Ilona Lindholm, Risto Huhtanen, Heikki Sjövall

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)

Abstract

A systematic study was carried out to investigate the hydrogen behaviour in a BWR reactor building during a severe accident. BWR core contains a large amount of Zircaloy and the containment is relatively small. Because containment leakage cannot be totally excluded, hydrogen can build up in the reactor building, where the atmosphere is normal air. The objective of the work was to investigate, whether hydrogen can form flammable and detonable mixtures in the reactor building, evaluate the possibility of onset of detonation and assess the pressure loads under detonation conditions. The safety concern is, whether the hydrogen in the reactor building can detonate and whether the external detonation can jeopardize the containment integrity. The analysis indicated that the possibility of flame acceleration and deflagration-to-detonation transition (DDT) in the reactor building could not be ruled out in case of a 20 mm2 leakage from the containment. The detonation analyses indicated that maximum pressure spike of about 7 MPa was observed in the reactor building room selected for the analysis.
Original languageEnglish
Pages (from-to)27-50
JournalNuclear Engineering and Design
Volume211
Issue number1
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Fingerprint

deflagration
Boiling water reactors
Detonation
detonation
Hydrogen
containment
reactors
hydrogen
simulation
leakage
accidents
spikes
integrity
rooms
accident
reactor
flames
safety
Accidents
atmospheres

Keywords

  • boiling water reactors
  • pressurized water reactors
  • hydrogen
  • nuclear power plants
  • nuclear reactor safety
  • nuclear reactors
  • nuclear safety
  • reactor accidents

Cite this

Manninen, Mikko ; Silde, Ari ; Lindholm, Ilona ; Huhtanen, Risto ; Sjövall, Heikki. / Simulation of hydrogen deflagration and detonation in a BWR reactor building. In: Nuclear Engineering and Design. 2002 ; Vol. 211, No. 1. pp. 27-50.
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abstract = "A systematic study was carried out to investigate the hydrogen behaviour in a BWR reactor building during a severe accident. BWR core contains a large amount of Zircaloy and the containment is relatively small. Because containment leakage cannot be totally excluded, hydrogen can build up in the reactor building, where the atmosphere is normal air. The objective of the work was to investigate, whether hydrogen can form flammable and detonable mixtures in the reactor building, evaluate the possibility of onset of detonation and assess the pressure loads under detonation conditions. The safety concern is, whether the hydrogen in the reactor building can detonate and whether the external detonation can jeopardize the containment integrity. The analysis indicated that the possibility of flame acceleration and deflagration-to-detonation transition (DDT) in the reactor building could not be ruled out in case of a 20 mm2 leakage from the containment. The detonation analyses indicated that maximum pressure spike of about 7 MPa was observed in the reactor building room selected for the analysis.",
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Simulation of hydrogen deflagration and detonation in a BWR reactor building. / Manninen, Mikko; Silde, Ari (Corresponding Author); Lindholm, Ilona; Huhtanen, Risto; Sjövall, Heikki.

In: Nuclear Engineering and Design, Vol. 211, No. 1, 2002, p. 27-50.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Simulation of hydrogen deflagration and detonation in a BWR reactor building

AU - Manninen, Mikko

AU - Silde, Ari

AU - Lindholm, Ilona

AU - Huhtanen, Risto

AU - Sjövall, Heikki

PY - 2002

Y1 - 2002

N2 - A systematic study was carried out to investigate the hydrogen behaviour in a BWR reactor building during a severe accident. BWR core contains a large amount of Zircaloy and the containment is relatively small. Because containment leakage cannot be totally excluded, hydrogen can build up in the reactor building, where the atmosphere is normal air. The objective of the work was to investigate, whether hydrogen can form flammable and detonable mixtures in the reactor building, evaluate the possibility of onset of detonation and assess the pressure loads under detonation conditions. The safety concern is, whether the hydrogen in the reactor building can detonate and whether the external detonation can jeopardize the containment integrity. The analysis indicated that the possibility of flame acceleration and deflagration-to-detonation transition (DDT) in the reactor building could not be ruled out in case of a 20 mm2 leakage from the containment. The detonation analyses indicated that maximum pressure spike of about 7 MPa was observed in the reactor building room selected for the analysis.

AB - A systematic study was carried out to investigate the hydrogen behaviour in a BWR reactor building during a severe accident. BWR core contains a large amount of Zircaloy and the containment is relatively small. Because containment leakage cannot be totally excluded, hydrogen can build up in the reactor building, where the atmosphere is normal air. The objective of the work was to investigate, whether hydrogen can form flammable and detonable mixtures in the reactor building, evaluate the possibility of onset of detonation and assess the pressure loads under detonation conditions. The safety concern is, whether the hydrogen in the reactor building can detonate and whether the external detonation can jeopardize the containment integrity. The analysis indicated that the possibility of flame acceleration and deflagration-to-detonation transition (DDT) in the reactor building could not be ruled out in case of a 20 mm2 leakage from the containment. The detonation analyses indicated that maximum pressure spike of about 7 MPa was observed in the reactor building room selected for the analysis.

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KW - pressurized water reactors

KW - hydrogen

KW - nuclear power plants

KW - nuclear reactor safety

KW - nuclear reactors

KW - nuclear safety

KW - reactor accidents

U2 - 10.1016/S0029-5493(01)00443-5

DO - 10.1016/S0029-5493(01)00443-5

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