Analysis of Precooling Injection Transient of Steam Generator for High Temperature Gas Cooled Reactor
Joint Authors
Zheng, Yanhua
Shi, Lei
Wang, Yan
Source
Science and Technology of Nuclear Installations
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-07-27
Country of Publication
Egypt
No. of Pages
8
Abstract EN
After a postulated design basis accident leads high temperature gas cooled reactor to emergency shutdown, steam generator still remains with high temperature level and needs to be cooled down by a precooling before reactor restarts with clearing of fault.
For the large difference of coolant temperature between inlet and outlet of steam generator in normal operation, the temperature distribution on the components of steam generator is very complicated.
Therefore, the temperature descending rate of the components in steam generator needs to be limited to avoid the potential damage during the precooling stage.
In this paper, a pebble-bed high temperature gas cooled reactor is modeled by thermal-hydraulic system analysis code and several postulated precooling injection transients are simulated and compared to evaluate their effects, which will provide support for the precooling design.
The analysis results show that enough precooling injection is necessary to satisfy the precooling requirements, and larger mass flow rate of precooling water injection will accelerate the precooling process.
The temperature decrease of steam generator is related to the precooling injection scenarios, and the maximal mass flow rate of the precooling injection should be limited to avoid the excessively quick temperature change of the structures in steam generator.
American Psychological Association (APA)
Wang, Yan& Shi, Lei& Zheng, Yanhua. 2017. Analysis of Precooling Injection Transient of Steam Generator for High Temperature Gas Cooled Reactor. Science and Technology of Nuclear Installations،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1203798
Modern Language Association (MLA)
Wang, Yan…[et al.]. Analysis of Precooling Injection Transient of Steam Generator for High Temperature Gas Cooled Reactor. Science and Technology of Nuclear Installations No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1203798
American Medical Association (AMA)
Wang, Yan& Shi, Lei& Zheng, Yanhua. Analysis of Precooling Injection Transient of Steam Generator for High Temperature Gas Cooled Reactor. Science and Technology of Nuclear Installations. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1203798
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1203798