Structures and elements for the decommissioning cost estimations of nuclear research reactors

Decommissioning cost estimation is a very important technique when designing and planning a nuclear facilities’ decommissioning project. Decommissioning cost estimation should be made according to the phases of the decommissioning activities and the installed components of the nuclear facilities. In this paper, the basic framework for decommissioning cost estimation is completed so that it could be used as a technique for decommissioning cost estimation by specifying the cost items and the group components as well as unit cost factors on which the work time is calculated. Also, the costs elements for the decommissioning cost estimation of the major activities and tasks are considered and reviewed. Specially, the unit cost factors and work difficulty factors for cost calculations are based on the decommissioning empirical data of Korea Research Reactor and the formula and methods using parametrics as these factors are definitely completed. Afterwards, these methods will be utilized as the basic technologies during establishing the decommissioning design and plan of nuclear research reactors.