safety case for slovenian lilw near-surface repository...safety case for slovenian lilw near-surface...
TRANSCRIPT
Safety case for Slovenian LILW near-surface repository
International Conference on the Safety of Radioactive Waste Management
21. - 25. November 2016, Ljubljana
Sandi Viršek, Janja Špiler, Tomaž Žagar
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
• Slovenian LILW disposal facility Vrbina Krško project
• Vrbina Krško site
• Disposal concept
• LILW disposal facility design
• Safety case
• Current status
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Content
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
- Started in 2003
- Area screening with cooperation of local communities
- Prefeasibility study – 3 most promising sites
- Feasibility study – different disposal concepts
- 2009 – Vrbina, Krško site and disposal concept approved (Decree on Detailed Plan of National Importance for LILW repository)
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Siting
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
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Vrbina Krško site
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
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Shematic geological profile
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
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Disposal concept
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
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LILW repository facilities
1 – Faciliy for managment and services 2 – Technological facility
2.1 radilogical protected area entrance 2.2 spare storage facility with hot workshop
3 – Disposal facility with silo and roof for protection
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
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Final package unit cover
TTC
container
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
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Silo excavation
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
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Silo during operation
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
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Silo after closure
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
• used to support licensing action, to provide the input for design optimization and WAC development
• includes operational and post-closure safety assessment
• sensitivity and uncertainty analyses were performed using both deterministic and probabilistic approaches
• proposed facility meets the regulatory safety criteria with a good margin in all the analyses conducted
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Safety case
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
• Extended lifetime of NPP Krško,
• Preparation of the waste for disposal is done in NPP Krško,
• Disposal half of LILW from NPP Krško and all institutional LILW from Slovenia,
• Possibility to increase disposal capacity for the disposal of all LILW from NEK, modular concept,
• Construction of the repository in 2018-2020,
• Idle period of the repository from 2025,
• The repository resumes operation in 2050;
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Basic Assumption of the Project
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
• 2015 Finalization of site investigations
Ongoing activities
• 2016 Final design, Preliminary Safety Assessment Report, Environmental Impact Assessment Report,
Planned activities
• 2017 Environmental impact assessment, cross border impact assessment,
• 2018 Obtaining a construction permit
• 2018-20 Construction
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Status of the project
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
• Trial operation 2020-2021
• Operation I 2022-2024 (2027)
• Preparations for idle phase 2025 (2027)
• Idle phase 2026-2048
• Preparation for operation 2049
• (and second silo construction) (2049-2050)
• Operation II 2050-2060
• Decommissioning 2061
• Closing of the repository 2062
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LILW Repository phases
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
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Investment costs
Constant prices Dec. 2013 (000 EUR) Scenario SLO
Scenario Joint
Comparison % Joint/SLO
Total investment 140.997 157.548 11,7%
VAT 16.519 20.611 24,8%
Total with VAT 157.515 178.158 13,1%
Slovenian LILW disposal facility – recent development of the project
ARAO 02-08-030
• Repository provides the fulfillment of international and
national legal requirements regarding treatment and disposal
of LILW,
• Repository improves the conditions for life extension for NPP
Krško and offers synergetic effects for the second unit of NPP
Krško,
• Repository provides a basis for safe, economic and reliable
use of radioactive sources in science, medicine and industry
in Slovenia,
• All economic calculations and comparisons show a clear
advantage in case of a joint Slovenian and Croatian solution;
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Conclusions
Thank you for your attention!