Modelling of HTR Confinement Behaviour during Accidents Involving Breach of the Helium Pressure Boundary
Joint Authors
Fontanet, Joan
Naicker, Lolan
Herranz, Luis E.
Ramlakan, Alastair
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-08-19
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
Development of HTRs requires the performance of a thorough safety study, which includes accident analyses.
Confinement building performance is a key element of the system since the behaviour of aerosol and attached fission products within the building is of an utmost relevance in terms of the potential source term to the environment.
This paper explores the available simulation capabilities (ASTEC and CONTAIN codes) and illustrates the performance of a postulated HTR vented confinement under prototypical accident conditions by a scoping study based on two accident sequences characterized by Helium Pressure Boundary breaches, a small and a large break.
The results obtained indicate that both codes predict very similar thermal-hydraulic responses of the confinement both in magnitude and timing.
As for the aerosol behaviour, both codes predict that most of the inventory coming into the confinement is eventually depleted on the walls and only about 1% of the aerosol dust is released to the environment.
The crosscomparison of codes states that largest differences are in the intercompartmental flows and the in-compartment gas composition.
American Psychological Association (APA)
Fontanet, Joan& Herranz, Luis E.& Ramlakan, Alastair& Naicker, Lolan. 2009. Modelling of HTR Confinement Behaviour during Accidents Involving Breach of the Helium Pressure Boundary. Science and Technology of Nuclear Installations،Vol. 2009, no. 2009, pp.1-11.
https://search.emarefa.net/detail/BIM-490665
Modern Language Association (MLA)
Fontanet, Joan…[et al.]. Modelling of HTR Confinement Behaviour during Accidents Involving Breach of the Helium Pressure Boundary. Science and Technology of Nuclear Installations No. 2009 (2009), pp.1-11.
https://search.emarefa.net/detail/BIM-490665
American Medical Association (AMA)
Fontanet, Joan& Herranz, Luis E.& Ramlakan, Alastair& Naicker, Lolan. Modelling of HTR Confinement Behaviour during Accidents Involving Breach of the Helium Pressure Boundary. Science and Technology of Nuclear Installations. 2009. Vol. 2009, no. 2009, pp.1-11.
https://search.emarefa.net/detail/BIM-490665
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-490665