THE LOVIISA NUCLEAR POWER PLANT DECOMMISSIONING PLAN UPDATE Matti Kaisanlahti NKS-R Decommissioning Seminar, Halden, Norway, November 2013

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1 THE LOVIISA NUCLEAR POWER PLANT DECOMMISSIONING PLAN UPDATE 2012 Matti Kaisanlahti NKS-R Decommissioning Seminar, Halden, Norway, November 2013

2 Agenda Background Licensing Decommissioning schedule Decommissioning work plan Decontamination of primary circuit Needs for personal protective equipment Final disposal Risks of decommissioning work Decommissioning costs Conclusions 2

3 Background Revised every 6th year Studies for the decommissioning plan 2012: - Licensing - The influence of primary circuit decontamination - The needs for personal protective equipment - Risks of decommissioning Immediate dismantlement Disposal at the plant site 3

4 Licensing 4

5 Decommissioning schedule 5

6 Decommissioning work plan 1/2 The dismantling and treatment of the plant s radioactive components can be carried out with currently available technology and methods Large components, such as the reactor pressure vessels and steam generators, as whole components Other decommissioning waste will be mainly packed into concrete and wooden containers The total volume of the decommissioning waste will be m 3, when packed 6

7 Decommissioning work plan 2/2 7

8 Decontamination of primary circuit Decontamination of the primary circuit will be carried out during the preparatory phase First time simulated by MCNP 5-modeling program (Monte Carlo N-Particle) 8

9 Needs for personal protective equipment The dismantling of the activated material will mostly be done by remote-control A lot of different kind of cutting work, so the migration of the dust must be prevented by isolating the working object The personal protective equipment for dismantling will be finally selected according to the work object In the decommissioning work plan the effects of protective equipment on work has been taken into account when estimating the time needed for different works 9

10 Final disposal 10

11 Risks of decommissioning Availability of experienced people Loviisa 2 power plant unit will still be in power generation while the decommissioning of the power plant unit 1 starts The consequences of potential accidents are that the contamination could spread to the environment, or personnel dismantling the power plant could be exposed to high levels of radiation. The risk study showed that there is no need for evacuation or any other restrictions for people living near the power plant The decommissioning of the power plant needs a preparedness plan, which is based on the accident and risk analyses Scope and schedule 11

12 Decommissioning costs Cost item Costs, euros Preparatory phase Main equipment, constructions and materials Dismantling works (contracts) Handling of wastes and final disposal Surveillance, guarding, maintenance and utilities at the site Project administration and design Other costs (personnel and insurances) Costs in all Reserve to cover unspecified costs, 10% Total costs Round total costs 359 M 12

13 Conclusions The decommissioning of the Loviisa power plant units is designed to start in So the licensing of decommissioning should start early 2020's Decontamination of the primary circuit will be carried out during the preparatory phase. The calculations show that decontamination will significantly reduce the collective doses caused by handling of the contaminated material The dismantling and treatment of the plant s radioactive components can be carried out with currently available technology and methods. Still an important part of planning the decommissioning is to follow various technological improvements and decommissioning projects around the world The decommissioning waste will be disposed of in the extension of the existing repository for operating waste. The licensing of the extension of the L/ILW repository should start early 2020s Next decommissioning plan update will be at

14 Thank you for your attention! 14

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