Fuel assemblies in a reactor core and method of designing and arranging same

摘要

A reactor core ( 104 ) includes fuel assemblies ( 202 ) arranged in a loading pattern ( 1100 ) in response to corresponding power levels of the fuel assemblies ( 202 ). A crud deposition model ( 412 ) is used to predict crud deposition on the fuel assemblies ( 202 ) and fuel pins ( 300 ) within the fuel assemblies ( 202 ). The prediction of crud deposition enables generation of the loading pattern ( 1100 ) and design of lattice structures ( 1600 ) for the fuel assemblies ( 202 ) that results in the reduction of total crud deposition in the reactor core ( 104 ) and causes a substantially uniform crud deposition on the fuel assemblies ( 202 ) of the reactor core ( 104 ).