Abstract
Project Taishan is under construction in CHINA. It is a third generation nuclear power station designed with the advance EPR concept. Project Taishan's reference nuclear power station is Project FA3. For these two EPR projects, the dimension of fuel pool is the same but they are different in the storage capacity of the spent fuel required. For Project Taishan, the spent fuel pool is designed to store the spent fuels for 20 years, which means that the unloading fuel from the reactor core needs to be kept for more than 13 cycles (one cycle is 18 months). From the view of economy, more fuel assemblies are preferred to be stored in the spent fuel pool before being transported out of nuclear island. Now only 1288 effective cells on storage racks are available for fuel assemblies. 62 cells are unavailable because of the layout of equipment concerning spent fuel pool[1]. In this paper, the layout of the equipment concerning the spent fuel pool is studied. The purpose is to find out the design defect which blocks the usage of the fuel cells in spent fuel pool and to increase the available fuel cells. Several design defects are found after researching, for example, the span limit of Auxiliary Bridge in Fuel Building, the layout of the lighting under water in spent fuel pool, the specification of the penetration connection between the cooling pipes and the spent fuel pool, and etc. The analysis will be performed according to these design defects, and find out the solutions to improve the layout of equipment and increase the number of the available cells in spent fuel pool. An optimization report will be prepared to describe all improvement proposals. Increasing the containing capacity of the spent fuel is very useful for improving the economy during the power station operation stage. And the optimization proposals will be good reference for the design of the other EPR project, such as project Taishan phase II.
