REPUBLIC OF SLOVENIA MINISTRY OF AGRICULTURE AND THE ENVIRONMENT SLOVENIAN NUCLEAR SAFETY ADMINISTRATION SNSA challenges related to Libna fault Andrej Stritar 26. 4. 2013
Dec 18, 2015
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
SNSA challenges related to Libna fault
Andrej Stritar26. 4. 2013
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
COMPLEXITY OF SEISMIC ISSUES
Quick historical overview of seismic charts of Krško plane
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Strukturno formacijska karta Libne pri Krškem, GZL, 1996(M. Poljak, T. Verbič, I. Rižnar, M. Toman, M. Demšar)
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Reambulirana formacijsko strukturna geološka karta Libne, GZL, 1997.(M. Poljak, L. Placer)
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Verbič, T., 2008: Kvartarni sedimenti, stratigrafija in neotektonika vzhodnega dela Krške kotline (doktorska disertacija)
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Verbič, T., 2008: Kvartarni sedimenti, stratigrafija in neotektonika vzhodnega dela Krške kotline (doktorska disertacija)
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Verbič, T., 2008: Kvartarni sedimenti, stratigrafija in neotektonika vzhodnega dela Krške kotline (doktorska disertacija)
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Geology – phase 1, GeoZS, 2010
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Geology – phase 1, GeoZS, 2010
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Geology – phase 1, GeoZS, 2010
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Ekspertno mnenje o potencialnih pojavih inducirane seizmičnosti v območju akumulacije HE Brežice, 2011.(V. Mihajlov)
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
USAR, Rev. 14, 2008
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
1. Challenge:
Quality assurance
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Are these consortium reports?
Single signature!?
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Are these consortium reports?
Single signature!?
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
How is quality assured?
• Was the document reviewed by anyone?
• Who has approved it?• Do all consortium members
stand behind this document?• Does the consortium have
any quality management system?
• IRSN statement 1: “The consortium agree on capabilities of this fault”
• Based on which document? Is there any consortium report we are not aware of?
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
2. Challenge:
Changes of the site characteristics
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Implication to NEK 2
• IRSN statement 2:“This new and serious finding does not allow concluding in a favorable manner as regards suitability of site for JEK2”
• Why such urgent conclusion, when in the continuation of the letter a possibility for further investigation and clarification is given?
• For SNSA siting of second unit is not a challenge now!
• New findings will have to be taken into account once siting formally starts.
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Implication to NEK 1
• IRSN statement:“Particular attention must be given to the fact that the Libna capable fault lies in the vicinity of the existing Krško 1 plant site.”
• This is our major concern!
• The consortium should tell us what is the problem!
• Could something like this happen?
http://www.survival-goods.com/What_is_an_Earthquake_s/269.htm
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Is USAR Chapter 2.5 still valid?
Is that still valid?
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
What about response spectra like this one?
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
Core Damage Frequency and Accelerations
• PSHA 2004– PGA on surface = 0.56 g– PGA on the level of foundation = 0.38 g
• Will that change?
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
New challenge?
• What displacement is probable on the site?• What displacement probability is acceptable?
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
3. Challenge:
How to improve NEK 1
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
After new inputs about the site are known
• Krško NPP will have to review its seismic design
• New data will be taken into account in siting of the low and intermediate level radioactive waste repository
• This is not expected from the consortium
REPUBLIC OF SLOVENIA
MINISTRY OF AGRICULTURE AND THE ENVIRONMENT
SLOVENIAN NUCLEAR SAFETY ADMINISTRATION
THREE CHALLENGES
1. How was the quality of the consortium work assured?
2. How has the seismic input to Krško NPP changed?
3. How will those changes influence safety margins of the Krško NPP seismic design?