DEVELOPING AN ALTERNATIVE METHOD FOR MITIGATION OF HYDROGEN CHALLENGE AT A SEVERE ACCIDENT AT NUCLEAR POWER UNITS WITH A WWER-440 REACTOR

V.G. PETROSYAN; A.D. GRIGORYAN; E.A. YEGHOYAN; A.P. PETROSYAN; M.R. MOVSISYAN

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V.G. PETROSYAN National Polytechnic University of Armenia Author
A.D. GRIGORYAN National Polytechnic University of Armenia Author
E.A. YEGHOYAN National Polytechnic University of Armenia Author
A.P. PETROSYAN National Polytechnic University of Armenia Author
M.R. MOVSISYAN National Polytechnic University of Armenia Author

Keywords:

WWER-440, severe accident, hydrogen challenge, nitrogen injection system, filtered venting system, spray system

Abstract

The most probable volumes are determined from the standpoint of accumulation of oxygen and dangerous ignition of hydrogen in case of a possible severe accident at nuclear power units with a WWER-440 reactor. For the most dangerous volume, an alternative method for mitigating the hydrogen challenge is proposed based on a deliberate release of the atmosphere and reduction of oxygen amount by injection of nitrogen.

DEVELOPING AN ALTERNATIVE METHOD FOR MITIGATION OF HYDROGEN CHALLENGE AT A SEVERE ACCIDENT AT NUCLEAR POWER UNITS WITH A WWER-440 REACTOR

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