Investigations on Startup Methods of Large LOCA Blowdown Simulation Experiments

Xing Dianchuan; Tang Ming; Wang Tao; Hou Fengwei; Zan yuanfeng; Huang Jun; Qiu Zicheng

doi:10.13832/j.jnpe.2016.S2.0146

Volume 37 Issue S2

Feb. 2025

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Article Navigation > Nuclear Power Engineering > 2016 > 37(S2): 146-149

Xing Dianchuan, Tang Ming, Wang Tao, Hou Fengwei, Zan yuanfeng, Huang Jun, Qiu Zicheng. Investigations on Startup Methods of Large LOCA Blowdown Simulation Experiments[J]. Nuclear Power Engineering, 2016, 37(S2): 146-149. doi: 10.13832/j.jnpe.2016.S2.0146

Citation:

Xing Dianchuan, Tang Ming, Wang Tao, Hou Fengwei, Zan yuanfeng, Huang Jun, Qiu Zicheng. Investigations on Startup Methods of Large LOCA Blowdown Simulation Experiments[J]. Nuclear Power Engineering, 2016, 37(S2): 146-149. doi: 10.13832/j.jnpe.2016.S2.0146

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Investigations on Startup Methods of Large LOCA Blowdown Simulation Experiments

doi: 10.13832/j.jnpe.2016.S2.0146

1. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610213, China;
2. Jiangsu Nuclear Power Co. Ltd, Lianyungang, Jiangsu, 222042, China;
3. China Aerodynamics Research and Development Center, Mianyang, Sichuan, 621000, China

Received Date: 2016-10-09
Rev Recd Date: 2016-12-25

Available Online: 2025-02-15

Publish Date: 2025-02-15

Abstract

Abstract

The large LOCA blowdown simulation experiment is usually needed for the purpose of the performance evaluation of containment sump strainer and downstream effect analysis. In this paper, large LOCA blowdown simulation experiment was conducted by double rupture discs combining with a pneumatic valve, and the accurate controlling of starting pressure and the instantaneous release of high-energy fluid was realized. The measurement results of dynamic pressure indicate that the pressure lose of double discs bleed starting mode is the largest, and the total pressure rise velocity is relative slow for the single disc starting mode. Double discs charging starting mode can accurately simulate large LOCA blowdown physical process in term of pressure loss, pressure rise velocity and pressure accuracy. Finally, jet impinging destruction tests for double-wall encapsulated insulation configuration were carried out by double discs charging starting mode. The results indicate that the impact load supplied by the present facility is sufficient.
- Large LOCA blowdown simulation,
- Starting modes,
- Pressure accuracy,
- Pressure rise velocity,
- Jet impinging destruction tests