Implementation of RAVE™ (To a Reload)

Westinghouse 3D Transient Neutronics methodology, RAVE™, has been implemented for the first time for licensing basis analysis of a Westinghouse 2-Loop type Pressurized Water Reactor (PWR). Westinghouse is using the traditional reload methodology for its fleet by utilizing a bounding approach. Safety limits are defined at the beginning of the process by using bounding values. These limits are then checked for every reload and they are shown then there are no violations to those limits therefore the safety calculations are still acceptable for the new loading pattern. This approach eliminates repeating safety/accident calculations for each reload. A new reload methodology was developed which utilizes similar safety reload methodology.