Root Cause Analysis for Micro-Governor Valve Module DC-DC Converter Failure in Daya Bay Nuclear Power Station

XIA Hongwei; LU Wenyue; QU Yueqi

Jun. 2005

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XIA Hongwei, LU Wenyue, QU Yueqi. Root Cause Analysis for Micro-Governor Valve Module DC-DC Converter Failure in Daya Bay Nuclear Power Station[J]. Nuclear Power Engineering, 2005, 26(S1): 123-125.

Citation:

XIA Hongwei, LU Wenyue, QU Yueqi. Root Cause Analysis for Micro-Governor Valve Module DC-DC Converter Failure in Daya Bay Nuclear Power Station[J]. Nuclear Power Engineering, 2005, 26(S1): 123-125.

XIA Hongwei, LU Wenyue, QU Yueqi. Root Cause Analysis for Micro-Governor Valve Module DC-DC Converter Failure in Daya Bay Nuclear Power Station[J]. Nuclear Power Engineering, 2005, 26(S1): 123-125.

Citation:

XIA Hongwei, LU Wenyue, QU Yueqi. Root Cause Analysis for Micro-Governor Valve Module DC-DC Converter Failure in Daya Bay Nuclear Power Station[J]. Nuclear Power Engineering, 2005, 26(S1): 123-125.

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Root Cause Analysis for Micro-Governor Valve Module DC-DC Converter Failure in Daya Bay Nuclear Power Station

Daya Bay Nuclear Power Operation and Management Co. Ltd., Shenzhen, Guangdong, 518124, China

Received Date: 2005-08-22
Available Online: 2025-07-25

Abstract

Abstract

Root cause analysis about DC-DC converter failure in Micro-governor valve module in unit 2 of Daya Bay Nuclear Power Station revealed that poor quality of the transistor material inside the converter,poor thermal design of the valve modules and insufficient ventilation to the cabinet resulted in the aging of converter after long-term operation.Followed correction action had been suggested and implemented on site.
- Daya Bay nuclear power station,
- Turbine,
- Valve module,
- DC-DC converter,
- Transistor,
- Aging