Euradwaste '08 - EU Bookshop - Europa

Euradwaste '08 - EU Bookshop - Europa Euradwaste '08 - EU Bookshop - Europa

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As in all industrial activities, "Polluter pays" principle is valid for nuclear power, too. Considering the long lead times in radioactive waste management, the financial provisions for waste management must be secured in advance and collected in phase with electricity production. The present generations that take the advantage of nuclear electricity shall have the burden to bear the waste management costs and not push them forward to future generations. The financing of waste management necessitates reliable assessment of waste management costs. The cost calculations are, however, not too straightforward especially when related to high level waste management. Prediction of future costs over a time span of one hundred years is very challenging while bearing in mind that the technology is continuously developing. In all activities related to nuclear power "Safety first" principle is mandatory. The application of this in financial provisions implies that conservatism is included in cost calculations. It should be noted that sufficiently accurate information of waste management costs is needed also for the evaluation of the economics of nuclear power, i.e. when new nuclear power plant projects are considered. Such calculations can utilise the same data base although they might be based on different premises and boundary conditions. The purpose of this presentation is to discuss the costs of spent fuel management, first using the Finnish situation as an example and then trying to generalize our experiences and conclusions into an international framework as far as possible. Some long-term perspective is available on the basis of the past evolution of our cost estimates but an extrapolation into the future is doubtful at its best. 2. Basis for calculation of waste management costs in Finland 2.1 Legal framework for assessing financial liabilities Preparations for nuclear waste management were commenced in Finland already in the 1970s when the power plants were still under construction. In 1983, the Government confirmed a target schedule for spent fuel management, in which the construction of the final disposal facility was scheduled for the 2010s and the start of final disposal for 2020. The Nuclear Energy Act regulates the implementation of nuclear waste management in Finland. According to the Act, the operators of the NPPs bear the responsibility for nuclear waste until final disposal has taken place. All nuclear waste generated in Finland, including spent fuel, must be handled, stored and permanently disposed of in Finland. The financial side of final disposal is also covered by legislation. The assets required for the management of wastes produced in nuclear power plants are collected in advance from the waste producers and transferred to the State Nuclear Waste Management Fund. The two nuclear power companies, Teollisuuden Voima Oy (TVO) and Fortum Power and Heat Oy (Fortum), are responsible for the safe management of the their waste and for all associated expenses. TVO and Fortum established a joint company, Posiva Oy, in 1995 to implement the disposal programme for spent fuel from their NPPs, whilst other nuclear wastes are handled and disposed of by the power companies themselves. The State Nuclear Waste Management Fund is a reserve for future costs. The Fund was introduced in the Nuclear Energy Act of 1987 and is operative since 1988. It is not included in the budget of the state, but is an external fund controlled by the Ministry of Employment and the Economy (TEM). The Finnish Fund fulfils the two globally accepted principles for such funds: the funds are 48

collected in the cost of the nuclear electricity production giving rise to the wastes and the collected funds should be available when the related waste management operations are carried out. The nuclear operators are entitled to borrow back, at the market interest, 75% of the capital against full securities. The State has the right to borrow the remaining 25% at the same interest rate. It is worth emphasizing that the Fund does not pay for the waste management activities but only keeps in safe the money corresponding to the costs of the remaining measures. Theoretically, all the funds have been returned to the operators when they have carried out all the necessary waste management operations. As the costs of dismantling and decommissioning immediately turn to remaining waste management costs when a nuclear facility is made critical for the first time, there is a transition period of 25 years to collect these costs that constitute a considerable portion of the total waste management costs. A second and more universal financial provision system was introduced with the adoption of the International Financial Reporting Standard (IFRS) as basis for the financial reporting of Finnish public companies in 2005. IFRS requires that the waste management liabilities are accounted for in the balance sheet. Funds for future waste management activities have to be collected by the end of the operational lifetime of NPPs. 2.2 Practical prerequisites and principles of assessment The implementation of spent fuel management for Olkiluoto and Loviisa NPP units is based the Decision-in-Principle (DiP) issued by the Finnish Government in December 2000 and ratified by the Parliament in May 2001. According to this decision, Posiva will locate its repository in crystalline bedrock at Olkiluoto and the disposal would be based on the so called KBS-3 concept (Fig. 1). Based on the target schedule, final disposal of spent fuel will commence in 2020. Host rock Backfill KBS-3V Bentonite Canister 49 KBS-3H Host rock Bentonite Canister Figure 1: Schematic illustration of KBS-3 disposal concept with two alternatives The cost estimates for financial provisions and liabilities are based on the latest detailed waste management plans and schedules. These are revised at three years intervals; latest revision was made in 2006.

As in all industrial activities, "Polluter pays" principle is valid for nuclear power, too. Considering<br />

the long lead times in radioactive waste management, the financial provisions for waste management<br />

must be secured in advance and collected in phase with electricity production. The present<br />

generations that take the advantage of nuclear electricity shall have the burden to bear the waste<br />

management costs and not push them forward to future generations.<br />

The financing of waste management necessitates reliable assessment of waste management costs.<br />

The cost calculations are, however, not too straightforward especially when related to high level<br />

waste management. Prediction of future costs over a time span of one hundred years is very challenging<br />

while bearing in mind that the technology is continuously developing. In all activities related<br />

to nuclear power "Safety first" principle is mandatory. The application of this in financial provisions<br />

implies that conservatism is included in cost calculations.<br />

It should be noted that sufficiently accurate information of waste management costs is needed also<br />

for the evaluation of the economics of nuclear power, i.e. when new nuclear power plant projects<br />

are considered. Such calculations can utilise the same data base although they might be based on<br />

different premises and boundary conditions.<br />

The purpose of this presentation is to discuss the costs of spent fuel management, first using the<br />

Finnish situation as an example and then trying to generalize our experiences and conclusions into<br />

an international framework as far as possible. Some long-term perspective is available on the basis<br />

of the past evolution of our cost estimates but an extrapolation into the future is doubtful at its best.<br />

2. Basis for calculation of waste management costs in Finland<br />

2.1 Legal framework for assessing financial liabilities<br />

Preparations for nuclear waste management were commenced in Finland already in the 1970s when<br />

the power plants were still under construction. In 1983, the Government confirmed a target schedule<br />

for spent fuel management, in which the construction of the final disposal facility was scheduled<br />

for the 2010s and the start of final disposal for 2020.<br />

The Nuclear Energy Act regulates the implementation of nuclear waste management in Finland.<br />

According to the Act, the operators of the NPPs bear the responsibility for nuclear waste until final<br />

disposal has taken place. All nuclear waste generated in Finland, including spent fuel, must be handled,<br />

stored and permanently disposed of in Finland.<br />

The financial side of final disposal is also covered by legislation. The assets required for the management<br />

of wastes produced in nuclear power plants are collected in advance from the waste producers<br />

and transferred to the State Nuclear Waste Management Fund. The two nuclear power companies,<br />

Teollisuuden Voima Oy (TVO) and Fortum Power and Heat Oy (Fortum), are responsible<br />

for the safe management of the their waste and for all associated expenses. TVO and Fortum established<br />

a joint company, Posiva Oy, in 1995 to implement the disposal programme for spent fuel<br />

from their NPPs, whilst other nuclear wastes are handled and disposed of by the power companies<br />

themselves.<br />

The State Nuclear Waste Management Fund is a reserve for future costs. The Fund was introduced<br />

in the Nuclear Energy Act of 1987 and is operative since 1988. It is not included in the budget of<br />

the state, but is an external fund controlled by the Ministry of Employment and the Economy<br />

(TEM). The Finnish Fund fulfils the two globally accepted principles for such funds: the funds are<br />

48

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