Auxiliary Building The AB is designed with reinforced concrete structure as seismic category
I and placed on a common basemat with the RCB. It wraps around the RCB with a quadrant
arrangement.The AB houses the MCR, EDGs room, FHA, and the safety-related components
such as SIS.The systems and internal structures in the AB are arranged to provide physical separation
for minimizing the hazard from internal and external events such as flood, fire, security
problem, and sabotage without adversely affecting accessibility. The safety equipment is spatially
separated to enhance its actuation reliability. Each train of SIS, which consists of four
trains, is located in each separate division. The EDGs are also spatially separated on opposite
sides. In order to improve the convenience of operation and maintenance, the internal layout
of the AB is designed to provide sufficient space and lifting rig for replacing heat exchangers
and replace a generator of EDG without removing the outer wall.The technical support center
(TSC) is located adjacent to theMCR to improve communication between operators and technical
crews during abnormal plant situations.The passages are designed for visitors and plant
crews not to interfere with each other in the FHA, the MCR, and turbine-operating floor. And
the internal arrangement of components is divided into the radiation area and clean area to
reduce the occupational exposure dose
đang được dịch, vui lòng đợi..