Cost estimates of nuclear waste management

The costs caused by the management of the spent fuel produced by nuclear power plant units TVO I and TVO II during their 30 years' operational life are estimated in the report. The cost estimate is based, in regard to the spent fuel management, on TVO's plan according to which spent fuel is stored intermediately and finally disposed as such in Finland. As far as decommissioning is concerned, the estimate is based on deferred dismantlement, and for reactor waste's part, on final disposal at site at Olkiluoto. The report deals also with the development of nuclear waste management reserve during the years 1979...1982 and the effect of the reserve on electricity prices. The Ministry of Trade and Industry has approved the calculation basis 1.36 p/kWh for the year 1982. The effect of significant changes in nuclear waste management plans on the cost estimate has also been discussed. This kind of changes comprise reprocessing, significant increase in waste amounts when a new power plant unit is added into the waste management plan, untimely termination of plant operation and accident at the plant. The cost estimate at October 1982 price level is as follows: spent nuclear fuel transfer to interim storage and intermediate storing 873 million marks, transfer to final disposal site 127 million marks, and encapsulation and final disposal 1450 million marks; decommissioning of the power plant 520 million marks; final disposal of reactor waste 80 million marks. The sales estimate for TVO I and TVO II during the corresponding period of time is 240 TWh. Thus the price effect with 0% discount rate is 1.27 p/kWh. Decrease, when compared to the cost estimate on which the previous provision calculations were based, is due to the new, more precise cost estimates concerning intermediate storing and transportation of spent nuclear fuel