Chinshan BWR Decommissioning SBO Analysis with RELAP5/MOD 3.3 (NUREG/IA-0558)

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Publication Information

Manuscript Completed: December 2025
Date Published: February 2026

Prepared by:
Kuei-Shu Chang-Liao, Jong-Rong Wang, Shun-Chi Wu, Shao-Wen Chen,Hsiung-Chih Chen, and Tzu-Yao Yu*

National Tsing Hua University and Nuclear and New Energy Education and Research
Foundation 101 Section 2, Kuang Fu Rd.,
HsinChu, Taiwan

*Department of Nuclear Safety, Taiwan Power Company
242, Section 3, Roosevelt Rd., Zhongzheng District, Taipei, Taiwan

A. Hsieh, NRC Project Manager

Division of Systems Analysis
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

Prepared as part of
The Agreement on Research Participation and Technical Exchange
Under the Thermal-Hydraulic Code Applications and Maintenance Program (CAMP)

Published by:
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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Abstract

This project is responsible for analyzing the decommissioning planning and operational safety of Taiwan Power Company's nuclear power plants. Over the four-year project period, analysis will be conducted using the SNAP/RELAP5 program. The current project aims to establish a model for the decommissioning transitional phase of Kuosheng Nuclear Power Plant using SNAP/RELAP5, supplemented by heat flow formula calculations and TRACE analysis for validation and comparison [1]. This effort will assist Taiwan Power Company in conducting assessments related to the decommissioning transitional phase of Chinshan NPP and other associated tasks.