Integrated Risk-Informed Design (I-RID) methodological framework and computational application for FLEX equipment storage buildings of Nuclear Power Plants

Schumock, Grant; Zhang, Sai; Farshadmanesh, Pegah; Owens, Jesse Gardner; Kasza, Nicolette; Stearns, J.B.; Sakurahara, Tatsuya; Mohaghegh, Zahra

doi:10.1016/j.pnucene.2019.103186

Cited by 9 publications

(1 citation statement)

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“…In ad di tion, the U.S. NRC has made ef forts to credit FLEX strat e gies in reg u la tory ap pli ca tions [52], such as in ves ti gat ing hu man re li abil ity as sess ment meth ods for the FLEX con text [53], in cor po rat ing the FLEX equip ment into PSA [54] and over see ing the licensee's im ple men ta tion of FLEX strat e gies, pre paring Reg u la tory Guide 1.226 to guide the li cens ees on how to dem on strate their com pli ance with reg u la tions of BDBEE plan ning and pre pared ness.…”

Section: Usamentioning

confidence: 99%

A review on the defense-in-depth concept and the flex strategies in different countries after Fukushima accident

Xu¹,

Zhang

2021

Nucl Technol Radiat Prot

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In order to enhance the defense in depth for nuclear safety after the Fukushima nuclear accident, U.S. Nuclear Energy Institute put forward the concept of Diverse and Flexible Coping Strategies and the corresponding FLEX support guidelines for the special scenarios of Extended Loss of Alternating current Power and Loss of Ultimate Heat Sink caused by Beyond-Design-Basis External Event. Subsequently, the idea of the FLEX strategy was widely accepted and spread widely. The introduction of the concept of FLEX strategy into the defense in depth was the biggest improvement for nuclear safety in the recent decade. This paper has reviewed the concept of traditional defense in depth and its weakness that led to the Fukushima nuclear accident, which led to the development motivation for the FLEX strategy. The research progress of the FLEX strategy in different countries in the past ten years has been reviewed. Based on the literature, and the above-mentioned review, some recommended future work has been given.

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Section: Usamentioning

confidence: 99%