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Hydrogen hazard and mitigation analysis in PWR containment

Oluşturulma Tarihi:

Niteleme Bilgileri

Tür: Makale

Yayınlanma Durumu: Yayınlanmış

Dosya Biçimi: Dosya Yok

Dil: İngilizce

Konu(lar): TEKNOLOJİ,

Yazar(lar): Şahin, Sümer (Yazar), Sarwar, Mohammad Sohail (Yazar),

Emeği Geçen(ler):


Yayın Adı: Annals of Nuclear Energy Yayın Niteleme Bilgileri: Kaynağın tam metnine ulaşmak için URL’ ye tıklayınız.


Dosya:
Dosya Yok

Anahtar Kelimeler

Hydrogen risk; Nuclear power reactor; Containment; Severe accident in PWR; Hydrogen recombiners



    Özet

    This paper describes the analytical results for the estimation of hydrogen concentration in the containment atmosphere based on zirconium oxidation reaction following a severe accident. The analysis provides useful information about the potential challenge of local hydrogen accumulation in the containment, which may be used to reduce the hydrogen detonation risk and to design the capacity and arrangements of mitigation measures. The containment analysis has been performed using computer code COGAP which uses the scenario of loss of coolant accident. The behavior of pressure and hydrogen concentrations in containment as a function of time under the severe accident condition is presented in graphical form. The mitigation measures (recombiners) are essential to maintain containment atmosphere in the safe stable conditions. A hydrogen control system is to mitigate the hydrogen risk by comparing results from a reference accident sequence with and without recombiners. This comparison show that combustible gas occur in few local areas in the containment for a limited time span and hydrogen concentration is reduced significantly with the use of recombiners.


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