Improvement of Overpressure Protection in Cold Solid Condition for 1000MWe PWR NPP

OuYang Yong; Jiang Xiaohua; Lu Xianghui

Feb. 2025

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OuYang Yong, Jiang Xiaohua, Lu Xianghui. Improvement of Overpressure Protection in Cold Solid Condition for 1000MWe PWR NPP[J]. Nuclear Power Engineering, 2014, 35(S1): 113-116.

Citation:

OuYang Yong, Jiang Xiaohua, Lu Xianghui. Improvement of Overpressure Protection in Cold Solid Condition for 1000MWe PWR NPP[J]. Nuclear Power Engineering, 2014, 35(S1): 113-116.

OuYang Yong, Jiang Xiaohua, Lu Xianghui. Improvement of Overpressure Protection in Cold Solid Condition for 1000MWe PWR NPP[J]. Nuclear Power Engineering, 2014, 35(S1): 113-116.

Citation:

OuYang Yong, Jiang Xiaohua, Lu Xianghui. Improvement of Overpressure Protection in Cold Solid Condition for 1000MWe PWR NPP[J]. Nuclear Power Engineering, 2014, 35(S1): 113-116.

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Improvement of Overpressure Protection in Cold Solid Condition for 1000MWe PWR NPP

China Nuclear Power Technology Research Institute, Shenzhen, Guangdong, 518026, China

Received Date: 2013-11-18
Rev Recd Date: 2014-02-25

Available Online: 2025-02-15

Abstract

Abstract

An improvement project of overpressure protection in cold solid condition for 1000MWe PWR NPP is proposed,i.e.combined with the RRA safety valves,PSVs are used to provide dual overpressure protection by lowering the pressure setpoints for opening and closing.Normally,the overpressure protection is implemented by the RRA safety valves,while in case of RRA isolated,PSVs are used to provide back-up protection in place of the RRA safety valves.The analysis results show that PSVs can provide effective overpressure protection in cold solid condition,consequently ensure the integrity of RCP pressure boundary.
- PWR NPP,
- Cold solid condition,
- Overpressure,
- Improvement,
- PSVs,
- Integrity