The Design of a Compact, Integral, Medium-Sized PWR: The CIRIS
Koroush Shirvan and Mujid S. Kazimi
MIT-TR-ANP-129 (March 2010)
Abstract. The International Reactor Innovative and Secure (IRIS) is an advanced, medium-sized, integral light water reactor design, currently rated at 1000 MWt. IRIS design has been under development by 20+ organizations from nine countries, led by Westinghouse. IRIS has a standard Westinghouse PWR core, but is an integral reactor, which means that all pumps, steam generators, pressurizers and control rod drive mechanisms are contained within the reactor vessel. This report assesses possible improvements of the plant economics by increasing the power density in the core and adopting compact heat exchangers, while also maintaining or improving the safety margins.
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