The Preliminary Structural Design of SSBWR-200

摘要

Boiling Water Reactors have many possible applications worldwide, especially in China. INET has completed aconceptual design of a 200MWe simplified small BWR which eliminates the inner or outer pump in the primary loop andenhances the safety. The primary coolant flow is driven by natural circulation with the corresponding structural design basedon NHR and BWR technology. The core is located at the bottom of the RPV with a long riser above the core outlet toincrease the natural circulation capacity. The safety system is based on passive decay heat removal. The rather tall RPV has alarge water inventory in the primary system with all penetrations located above the core top. Therefore, no exposed core andno fuel damage will occur after a pipe rupture or any other accident. The structural design of the core, RPV, internals andother related equipment is presented in this paper.