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Key message
Neutral

In the 1990-2011 period, the quantity of spent nuclear fuel, which is the only type of high-level waste in Slovenia, increased by 6 % annually. As there is still no satisfactory method of waste storage, the accumulation of this waste poses a reason for concern. At the end of 2009, the location for the low and intermediate level radioactive waste repository in Vrbina pri Krškem was finally confirmed.


This indicator monitors the quantity of spent nuclear fuel, which provides a good estimate of the situation in the field of radioactive waste. Furthermore, it contains a projection of the production of electricity from nuclear power, as it is a rough indication of the quantity of spent nuclear fuel in the future. It also monitors the volume of intermediate and low-level waste.

The measurement unit for the quantity of spent nuclear fuel is tHM (tonnes of heavy metal). Nuclear electricity generation is calculated in terawatt hours (TWh). Low and intermediate-level waste is stated in the number of drums or other units or in terms of volume (m3).

Nuclear waste is classified as follows:
• High-level waste (HLW) – highly radioactive, generates a considerable amount of heat and long-lived radioactivity;
• Intermediate-level waste (ILW) – higher amounts of radioactivity; further classified into beta-gamma emitters (low and intermediate-level of radiotoxicity, negligible heat) and alpha emitters (intermediate-level of radiotoxicity, low heat);
• Low-level waste (LLW) – small to negligible amounts of radioactivity and, as is the case with intermediate-level waste, classified into beta-gamma emitters and alpha emitters (Agency for Radwaste Management, 2007).


Charts

Figure EN08-1: The annual quantity of spent nuclear fuel from the Nuclear Power Station Krško, increase in quantity of highly radioactive waste in spent fuel pool and the storage capacity for the period 1990-2011
Sources: 

Slovenian Nuclear Safety Administration, 2011: Razširjeno poročilo o varstvu pred ionizirajočimi sevanji in jedrski varnosti v Republiki Sloveniji leta 2011, page 186

Show data
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
Quantity of spent nuclear fuel per year tHM 16.3 0 15 16.3 0 12.3 9.5 9.5 10.9 10.9
Quantity of spent nuclear fuel in the storage pool tHM 106.9 106.9 121.9 138.3 138.3 150.5 160.1 169.6 180.5 191.4
Storage pool capacity tHM 282 282 282 282 282 282 282 282 282 282
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Quantity of spent nuclear fuel per year tHM 10.9 12.3 11.2 15 19.1 0 19.1 18.1 0 19.1
Quantity of spent nuclear fuel in the storage pool tHM 202.3 214.6 225.8 240.8 259.9 259.9 278.9 297 297 316
Storage pool capacity tHM 282 282 282 576.9 576.9 576.9 576.9 576.9 576.9 576.9
2010 2011
Quantity of spent nuclear fuel per year tHM 19.1 0
Quantity of spent nuclear fuel in the storage pool tHM 335.1 335.1
Storage pool capacity tHM 576.9 576.9
Figure EN08-2: Stored amount of low and medium radioactive waste in Nuclear Power Station Krško's storages from electricity production in the period 1990-2011
Sources: 

Slovenian Nuclear Safety Administration, 2012.

Show data
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
Quantity of low and medium radioactive waste m3 1706 1783 1914 2019 2078 1872 1971 2042 2074 2086
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Quantity of low and medium radioactive waste m3 2154 2203 2208 2253 2289 2256 2258 2174 2189 2209
2010 2011
Quantity of low and medium radioactive waste m3 2211 2234.1

Goals

- to ensure safe management of all nuclear waste and spent nuclear fuel in all phases of their existence;
- to provide permanent solutions for waste management (construction of the low and intermediate level radioactive waste repository, providing a long-term solution for depositing spent nuclear fuel and high-level waste).


Data for Slovenia

Objectives summarised by: Resolucija o Nacionalnem programu ravnanja z radioaktivnimi odpadki in izrabljenim jedrskim gorivom za obdobje 2006-2015 (Resolution on the 2006-2015 National Programme for Managing Radioactive Waste and Spent Nuclear Fuel, Official Gazette of the Republic of Slovenia, No. 15/06)
Source database or source: Data on spent nuclear fuel and the quantity of intermediate and low-level waste (Slovenian Nuclear Safety Administration – Annual Report) and Quantity of low and intermediate level waste at the repository of the Krško Nuclear Power Plant (Agency for Radwaste Management – Annual Report).
Data administrator: Slovenian Nuclear Safety Administration (Marko Giacomelli) and Agency for Radwaste Management.
Date of acquisition for this indicator: 15 November 2012
Methodology and frequency of data collection for the indicator: Data are prepared on an annual basis.
Data processing methodology: Average annual growth is calculated using the following formula: [(last year)/(first year)]^(1 / the number of years) – 1] x 100.
Information concerning data quality:
- Advantages and disadvantages of the indicator: Data on spent nuclear fuel are reported by the Krško Nuclear Power Plant and the Jožef Stefan Institute and are of a high quality. Data on the volume of low and intermediate-level waste are of a lesser quality, as they encompass different shapes of waste.
- Relevance, accuracy, robustness, uncertainty:
Reliability of the indicator (archival data): The indicator is reliable.
Uncertainty of the indicator (scenarios/projections): Scenarios and projections are not available.
- Overall assessment (1 = no major comments, 3 = data to be considered with reservation):
Relevance: 1
Accuracy: 1
Completeness over time: 1
Completeness over space: 1

Other sources and literature:
- Agency for Radwaste Management, 2005. Strokovne podlage nacionalnega programa ravnanja z RAO in IJG (Expert Background for the National Programme for Managing Radioactive Waste and Spent Nuclear Fuel).
- Agency for Radwaste Management, 2009.Annual Report 2008.
- Agency for Radwaste Management, 2011. Annual Report 2009 and 2010.
- Ministry of the Economy, 2009. Zelena knjiga za Nacionalni energetski program Slovenije (Green Paper for the National Energy Programme).
- Krško Nuclear Power Plant, 2012. Annual Report 2011.
- Slovenian Nuclear Safety Administration, 2012. Annual Report 2011 on the Radiation and Nuclear Safety in the Republic of Slovenia.


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