Fig. 10 presents the reactor water temperature response with
and without initial 10 min water feeding (32 kg/s) and with heat
pipe cooling. It is observed from Fig. 10 that during initial water
charging process, reactor cooling is accelerated. The gravity feed
water offers additional cooling capacity for the core that helps to
reduce highest reactor temperature achieved, provide initial temperature
drop after shutdown procedure and reduce reactor cooling
time. In Fig. 11, system operation for larger span of time is
provided that shows that with water injection, the reactor can