Cherenkov glow analysis by Luminance Distribution Processing

Nowadays there are great operational challenges placed on nuclear power plants. It is not only the physical security of the nuclear power plant but it must be guaranteed even against diversion of nuclear fuel and proliferation risk. The spent fuel inspections are the one way to ensuring nonproliferation risk. Inspections are carried out to check the physical presence of fuel assembly. But it also is useful to have tools to detecting fuel assembly or fuel pin manipulation. A typical example is partial defect detection. It was developed several devices for inspections of spent fuel using a Cherenkov glow analysis. These include Scientific Cherenkov viewing device or viewing device with CCD cameras. These devices evaluated Cherenkov glow in the UV spectrum. This article deals with the detection Cherenkov glow in the visible spectrum. This is a new way of using a top LumiDISP measuring system, which was developed for the analysis of the luminance. Spent fuel pool was analyzed by the LumiDISP measuring system and results were compared with fuel assembly´s information.