Cause Analysis for Accelerated Aging of Condenser Rubber Expansion Joint in NPPs

ZHANG Sheng; ZHANG Tao; CHEN Shi-jun; CHEN Yu; JIANG Hong; HUANG Li-jun; LI Ji

Volume 32 Issue 6

Mar. 2025

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Article Navigation > Nuclear Power Engineering > 2011 > 32(6): 105-109

ZHANG Sheng, ZHANG Tao, CHEN Shi-jun, CHEN Yu, JIANG Hong, HUANG Li-jun, LI Ji. Cause Analysis for Accelerated Aging of Condenser Rubber Expansion Joint in NPPs[J]. Nuclear Power Engineering, 2011, 32(6): 105-109.

Citation:

ZHANG Sheng, ZHANG Tao, CHEN Shi-jun, CHEN Yu, JIANG Hong, HUANG Li-jun, LI Ji. Cause Analysis for Accelerated Aging of Condenser Rubber Expansion Joint in NPPs[J]. Nuclear Power Engineering, 2011, 32(6): 105-109.

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Cause Analysis for Accelerated Aging of Condenser Rubber Expansion Joint in NPPs

1. China Nuclear Power Technology Research Institute, Shenzhen, Guangdong, 518124, China;
2. China Electric-Science Research Institute, Beijing, 100055, China

Received Date: 2010-07-26
Rev Recd Date: 2011-03-28

Available Online: 2025-03-08

Abstract

Abstract

This paper analyzes the root cause for the accelerated aging of condenser rubber expansion joint according to the actual condition in Daya Bay Nuclear Power Plant and the experience feedback from overseas nuclear power plants.Life assessment is taken for rubber expansion joints and some specific management strategies and suggestions are recommended.The result shows that the aging mechanism of the rubber expansion joints include the embrittlement aging,fatigue aging,contacted media aging,stress fatigue and thermal aging caused by mechanics and environment.Embrittlement aging is the main aging mechanism.
- Rubber expansion joint,
- Accelerated aging,
- Aging mechanism