7 September 2014
Chapter 15 #4
The Westinghouse Small Modular Reactor is a pressurized water reactor with all primary components located inside the reactor vessel. It is being designed to the point that it has the highest level of safety and reduce the number of components required will certainly be no mach for anyone else. It offers passive safety designs to shut the plant down and keep it cool without human interaction, reduced fuel, passive heat removal, underground containment, integral design eliminates a number of accidents, and improved energy security and reduction in the overall lifecycle carbon footprint when used to provide power for liquid transportation fuel from resources of oil sands. The SMR is capable of economically handling the challenges of providing baseload power. It also utilizes the Westinghouse’s mechanical shim which deals with grid changes. The daily load follow can perform from 100% to 20% power at a rate of 5% change per minute. The operational cost of the SMR is lowered due to the minimized chemistry change requirements. The Nuclear Regulatory Commission is currently working on pre-application activities on the Westinghouse’s SMR design. The SMR is designed by the Westinghouse Electric Company with passive cooling. It is light water reactor with a reactor and steam generator located in a single reactor vessel. The Westinghouse SMR has a rated thermal output of 800 Mwt and electrical output of 225 Mwe. The Westinghouse SMR is a compact reactor with a coolant system and containment. It is also an engineered solution for today’s clean energy challenges. The Westinghouse SMR Plant design is fueled with modification of standard Westinghouse product, compacted with high pressure containment vessel below grade, has a 24 month cycle length, it is recirculating straight tube steam generator with steam drum location outside of the containment vessel, and load follow capability. The layout of the SMR plant is a 4 part plant which include the annex building, turbine building, radwaste building, and nuclear island. In the annex building there is security, offices, restrooms, and RCA entry. In the turbine building there is the turbine system, auxiliary systems, and drain systems. In the nuclear island there is the containment and reactor, safety related systems, defense in depth systems, radwaste systems, control room and HVAC. In the radwaste building there is hot machine shop, low level radwaste storage, and truck bay. This is where the SMR will be located when it is designed and ready to be used.