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Discussing the Modification of Dedicated Lines Used for Severe Accident Depressurization

[+] Author Affiliations
Bo Zhang, Jing Liu, Xichao Liu, Yafu Gao, Aicheng Gong

China Nuclear Power Engineering Co., Ltd., Shenzhen, Guangdong, China

Paper No. ICONE21-15329, pp. V001T01A018; 4 pages
doi:10.1115/ICONE21-15329
From:
  • 2013 21st International Conference on Nuclear Engineering
  • Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications
  • Chengdu, China, July 29–August 2, 2013
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5578-2
  • Copyright © 2013 by ASME

abstract

A barrier that limits the development of the nuclear power plants is the problem of the depressurization for severe accidents. The present work addresses this issue by adding the dedicated severe accident depressurization system that is placed on the top of the pressurizer. This design enables the excessive heat to be directly pumped into the atmosphere to lower the pressure in the containment. The theoretical and numerical results indicated that the addition of the dedicated severe accident depressurization system does not affect the performance of the second generation of PWRs. More importantly, this design not only significantly reduces the LERF value but also facilitates the modification of the present structure.

Copyright © 2013 by ASME
Topics: Accidents

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