[en] The aim of this study was to assess the validity of the AIF/NESP decommissioning study without introducing a new estimate with a new set of assumptions and bases. The approach taken in this assessment was to review the assumptions regarding the regulations applicable to the decommissioning effort and then to evaluate the alternatives proposed. The methodology and procedures employed were evaluated to assess their feasibility based on experience in the design and construction of nuclear power plants. Finally the cost estimates were analyzed without preparing a new detailed estimate. These reviews were then used to evaluate the overall acceptability of the AIF/NESP report as a basis for individual plant estimates and to identify those areas that appear to require additional support or further investigation