ABSTRACT

The selected configuration and operating conditions are typical of a passive system for reactor decay heat removal, relying on natural circulation and provided with a heat exchanger submerged in a water pool at atmospheric conditions, acting as heat sink, as the Isolation Condenser of the Simplified Boiling Water Reactor (SBWR) (Burgazzi 2002). The key mission of the system is to reject the core decay heat to the heat sink by condensing primary fluid into the heat exchanger tube bundle.