WINCISE™ is an Operational Support System that uses Westinghouse technology licensed by the NRC to obtain an accurate, continuous core power distribution measurement. Westinghouse developed the WINCISE System as a replacement for the Movable Detector (M/D) System. WINCISE uses an OPARSSEL™ (Optimized Proportional Axial Region Signal Separation Extended Life) detector assembly that contains five Vanadium detector elements and a core exit thermocouple (CET). The integral CET eliminates maintenance and resulting personnel dose and critical path time associated with the reactor vessel head mounted CET.

The power distribution monitoring software (PDMS) used to continuously process the detector signals is the Westinghouse BEACON™ System, licensed by the NRC for use with the OPARSSEL design to produce accurate core power distribution measurements. The OPARSSEL design nearly eliminates detector material depletion and mechanical failures, which are major costs associated with the use of other fixed in-core detector system designs.