Status of Boiler Effect for Safety-Related Gate Valves and Its Improvement

WANG An; XIANG Wen-yuan; LI Shu-zhou

Aug. 2006

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WANG An, XIANG Wen-yuan, LI Shu-zhou. Status of Boiler Effect for Safety-Related Gate Valves and Its Improvement[J]. Nuclear Power Engineering, 2006, 27(4): 64-67.

Citation:

WANG An, XIANG Wen-yuan, LI Shu-zhou. Status of Boiler Effect for Safety-Related Gate Valves and Its Improvement[J]. Nuclear Power Engineering, 2006, 27(4): 64-67.

WANG An, XIANG Wen-yuan, LI Shu-zhou. Status of Boiler Effect for Safety-Related Gate Valves and Its Improvement[J]. Nuclear Power Engineering, 2006, 27(4): 64-67.

Citation:

WANG An, XIANG Wen-yuan, LI Shu-zhou. Status of Boiler Effect for Safety-Related Gate Valves and Its Improvement[J]. Nuclear Power Engineering, 2006, 27(4): 64-67.

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Status of Boiler Effect for Safety-Related Gate Valves and Its Improvement

Daya Bay Nuclear Operations & Management Co., Ltd., Shenzhen, Guangdong, 518124, China

Received Date: 2005-06-10
Rev Recd Date: 2005-10-16

Available Online: 2025-07-29

Abstract

Abstract

Based on international experimental and research results for Boiler Effect,this paper describes the analysis principle and method for Daya Bay ＆ Ling’ao nuclear power stations to confirm which gate valves are affected by boiler effect.Further analysis with PSA and detailed safety functions is to define finally RIS063/064VP and PTR022VB need to be modified.The solution avoiding Boiler Effect for RIS063/064VP is adding a bypass line with double-directional check valve,and drilling a hole on the upstream disk of PTR022VB is adopted.
- Nuclear safety,
- Gate valves,
- Boiler effect