The reactor and turbine building are arranged "in-line" and none of the major facilities are shared with the other units. The containment is a reinforced concrete containment vessel (RCCV) with a leak tight steel lining. The containment is surrounded by the reactor buliding, which doubles as a secondary containment. A negative pressure is maintained in the reactor building to direct any radioactive release from the containment to a gas treatment system. The reactor building and the containment are integragted to improve the seismic response of the building and the contaiment are integrated to improve the seismic response of the building without additional incerease in the size and load bearing capability of the walls.
Construction of the plant will make use of large modules which are prefabricated in the factory and assembled on site. A 1000 ton crawlwe crane will lift these modules and place them vertically into the plant. Use of RCCV, modular construction and other construction techniques reduce construction times from 66 to 50 months.
Particular attention was paid to designing the plant for ease of maintenance. Monorails are available to remove equipment to a conveniently located service room via an equipment hatch.
Removal of the Reactor Internal Pumps and FMCRDs for servicing has been automated. Handling devices, which in the case of the FMCRD is operated remotely from outside the containment, engage and remove the equipment. The pump or driver is laid on a transport device and removed through the equipment hatch. Just outside the hatch are dedicated service rooms, one for the RIPs and another for the FMCRDs, where the equipment can be decontaminated and serviced in a shielded environment. The entire operation is done efficiently and with virtually no radiation exposure to the personnel.