Using CFD as Preventative Maintenance Tool for the Cold Neutron Source Thermosiphon System
Joint Authors
Yeoh, Guan H.
Ho, Mark
Jeong, Yeongshin
Park, Haneol
Lu, Weijian
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-12-19
Country of Publication
Egypt
No. of Pages
11
Abstract EN
The cold neutron source (CNS) system of the Open Pool Australian Light-Water (OPAL) reactor is a 20 L cryogenically cooled liquid deuterium thermosiphon system.
The CNS is cooled by forced convective helium which is held at room temperature during stand-by (SO) mode and at ~20 K during normal operation (NO) mode.
When helium cooling stops, the reactor is shut down to prevent the moderator cell from overheating.
This computational fluid dynamics (CFD) study aims to determine whether the combined effects of conduction and natural convection would provide sufficient cooling for the moderator cell under the influence of reactor decay heat after reactor shutdown.
To achieve this, two commercial CFD software packages using an identical CFD mesh were first assessed against an experimental heat transfer test of the CNS.
It was found that both numerical models were valid within the bounds of experimental uncertainty.
After this, one CFD model was used to simulate the thermosiphon transient condition after the reactor is shut down.
Two independent shutdown conditions of different decay-heat power profiles were simulated.
It was found that the natural convection and conduction cooling in the thermosiphon were sufficient for dissipating both decay-heat profiles, with the moderator cell remaining below the safe temperature of 200°C.
American Psychological Association (APA)
Ho, Mark& Jeong, Yeongshin& Park, Haneol& Yeoh, Guan H.& Lu, Weijian. 2016. Using CFD as Preventative Maintenance Tool for the Cold Neutron Source Thermosiphon System. Science and Technology of Nuclear Installations،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1118569
Modern Language Association (MLA)
Ho, Mark…[et al.]. Using CFD as Preventative Maintenance Tool for the Cold Neutron Source Thermosiphon System. Science and Technology of Nuclear Installations No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1118569
American Medical Association (AMA)
Ho, Mark& Jeong, Yeongshin& Park, Haneol& Yeoh, Guan H.& Lu, Weijian. Using CFD as Preventative Maintenance Tool for the Cold Neutron Source Thermosiphon System. Science and Technology of Nuclear Installations. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1118569
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118569