Safety Evaluation Of Indian Nuclear Power Plants Post Fukushima Incident

Fukushima Event As per initial analysis for Unit 4, the scenario was concluded as follows: > The unit was under refueling shut down, ➤ Entire core was stored in Spent Fuel Pool located on Reactor service floor. > The unavailability of motive power resulted in loss of Fuel Pool cooling and rise in pool water temperature. > Exposure of Spent Fuel to air resulted in metal water reaction which further heated up the fuel. > Hydrogen generated during the process formed an explosive mixture. and resulted in explosion, damaging the roof of the reactor building in which spent fuel pool is located. Typical BWR Spent Fuel Pool

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