Nuclear Energy for New Europe 2009

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No: 901

Conference: Nuclear Energy for New Europe 2009

Title: Low and Intermediate Level Waste Repository in Slovenia – potential site and disposal concept

Theme: Radioactive Waste Management

Author(s): Sandi Viršek

Contact : Sandi Viršek

E-mail: sandi.virsek@gov.si

Address: Agencija RS za radioaktivne odpadke
1000 Ljubljana

Country: Slovenia

Paper presents design concept of Slovenian LILW repository and potential site Vrbina in Krško municipality.
Slovenian Agency for radwaste management (ARAO) has mandate to find a site and build the repository for Low and Intermediate Level radioactive Waste (LILW). We started with new, so called combined procedure, which beside expert judgment also includes public involvement and in 2004 Slovenian Minister of Environment gave the incentive and in Official Gazette we published Programme of preparing of Detailed plan of national importance. With this program we started with siting process for Slovenian LILW repository.
The potential site Vrbina – Krško is at the time of Abstract preparation (April 2009) still potential, we expect that site will be approved in the first half of year 2009. It lies on Krško field, about 350 m east from Krško Nuclear power plant. On location Quaternary gravel layer is to be found in thickness of 10 m and under this layer Miocene silt occurs in which disposal units will be placed. We find groundwater on the depth of 4 m bellow surface.
In preliminary concept design we deal with three different concepts – surface, near surface and underground. Feasibility study compared all three possibilities and proposed near surface concept with silo type disposal unit, excavated from surface, to the depth of 60 m below surface. All technological buildings will be built-up on dam, which will protect buildings against Probable maximum flood. Also all other buildings will be protected against flooding but with different return periods.
When disposal unit – silo will be filled, it’ll be sealed with concrete and clay layer and after that excavation will be filled up with gravel. Control or monitoring period will follow and after that the site will be released in so called unrestricted use.

No:	901
Conference:	Nuclear Energy for New Europe 2009
Title:	Low and Intermediate Level Waste Repository in Slovenia – potential site and disposal concept
Theme:	Radioactive Waste Management
Author(s):	Sandi Viršek
Contact :	Sandi Viršek
E-mail:	sandi.virsek@gov.si
Address:	Agencija RS za radioaktivne odpadke 1000 Ljubljana
Country:	Slovenia

Paper presents design concept of Slovenian LILW repository and potential site Vrbina in Krško municipality. Slovenian Agency for radwaste management (ARAO) has mandate to find a site and build the repository for Low and Intermediate Level radioactive Waste (LILW). We started with new, so called combined procedure, which beside expert judgment also includes public involvement and in 2004 Slovenian Minister of Environment gave the incentive and in Official Gazette we published Programme of preparing of Detailed plan of national importance. With this program we started with siting process for Slovenian LILW repository. The potential site Vrbina – Krško is at the time of Abstract preparation (April 2009) still potential, we expect that site will be approved in the first half of year 2009. It lies on Krško field, about 350 m east from Krško Nuclear power plant. On location Quaternary gravel layer is to be found in thickness of 10 m and under this layer Miocene silt occurs in which disposal units will be placed. We find groundwater on the depth of 4 m bellow surface. In preliminary concept design we deal with three different concepts – surface, near surface and underground. Feasibility study compared all three possibilities and proposed near surface concept with silo type disposal unit, excavated from surface, to the depth of 60 m below surface. All technological buildings will be built-up on dam, which will protect buildings against Probable maximum flood. Also all other buildings will be protected against flooding but with different return periods. When disposal unit – silo will be filled, it’ll be sealed with concrete and clay layer and after that excavation will be filled up with gravel. Control or monitoring period will follow and after that the site will be released in so called unrestricted use.