Secondary-Side Depressurization during PWR Cold-Leg Small Break LOCAs Based on ROSA-V/LSTF Experiments and Analyses

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概要

• 論文の詳細を見る

• 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.

• 社団法人 日本原子力学会の論文
• 1998-12-25

著者

• KUKITA Yutaka

  Department of Energy Engineering and Science, Nagoya University

• Kukita Yutaka

  Department Of Energy Engineering And Science Nagoya University

• Kukita Y

  Department Of Energy Engineering And Science Nagoya University

• Kukita Yutaka

  Nagoya University

• ASAKA Hideaki

  Japan Atomic Energy Research Institute

• ANODA Yoshinari

  Japan Atomic Energy Research Institute

• Asaka H

  Japan Atomic Energy Research Institute

• Ohtsu Iwao

  Japan Atomic Energy Research Institute

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