Secondary-Side Depressurization during PWR Cold-Leg Small Break LOCAs Based on ROSA-V/LSTF Experiments and Analyses.
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- ASAKA Hideaki
- Japan Atomic Energy Research Institute
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- ANODA Yoshinari
- Japan Atomic Energy Research Institute
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- KUKITA Yutaka
- Nagoya University
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- OHTSU Iwao
- Japan Atomic Energy Research Institute
Bibliographic Information
- Other Title
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- Secondary Side Depressurization during
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Abstract
The effectiveness of an operator-initiated steam generator (SG) secondary-side depressurization on the core cooling performance during small-break loss of coolant accidents (SBLOCAs) in a pressurized water reactor (PWR) with total failure of the high pressure injection (HPI) systems is studied. The study is based on experiments conducted in the ROSA-V Large Scale Test Facility (LSTF) and analyses with the RELAP5/Mod3 code. The sensitivity of the core minimum liquid level and peak cladding temperature (PCT) to the secondary-side depressurization rate and the initiation time of the depressurization is evaluated analytically for various break sizes. It is shown that the PCT takes a maximum value for break areas between 1.0% and 1.5% of the cold leg cross-sectional area. The conditions which the depressurization rate and the initiation time should satisfy to limit the maximum PCT are derived.
Journal
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- Journal of Nuclear Science and Technology
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Journal of Nuclear Science and Technology 35 (12), 905-915, 1998
Atomic Energy Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204095278208
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- NII Article ID
- 10002080567
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- NII Book ID
- AA00703720
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- COI
- 1:CAS:528:DyaK1MXhtFSnsLs%3D
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- ISSN
- 18811248
- 00223131
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- NDL BIB ID
- 4629723
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed