International Atomic Energy Agency Technical Meeting on Probabilistic Safety Assessment for New Nuclear Power Plants’ Design IAEA, Vienna, Austria October

International Atomic Energy Agency

Technical Meeting onProbabilistic Safety Assessment for New Nuclear Power Plants’ Design

IAEA, Vienna, Austria October 1-5, 2012

Presented by: Irina Kuzmina, Safety Officer, SAS/NSNI, [email protected]

P1. Overview of Objectives & P1. Overview of Objectives & Agenda of Technical MeetingAgenda of Technical Meeting


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IAEA SAFETY STANDARDSIAEA SAFETY STANDARDS

IAEA has statutory obligation to develop international standards of safety

Safety GuidesSafety Guides

RequirementsRequirements

Safety FundamentalsSafety FundamentalsArticle III.A.6 of Statute:

To establish or adopt standards of safety for the protection of health and minimization of danger to life and property

To provide for the application of these standards

IAEA SAFETY STANDARDS SERIESWide international consensus is

achieved through a rigorous development process


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SAFETY FUNDAMENTALS (1/2)SAFETY FUNDAMENTALS (1/2)

The fundamental safety objective is

to protect people and the environment from harmful

effects of ionizing radiation

‘Safety’ means the protection of people and the environment against radiation risks

Ten safety principles have been formulated, on the basis of which safety requirements are developed and safety measures are to be implemented in order to achieve the fundamental safety objective


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Principle 5 ‘Optimization of protection’ states:

“To determine whether radiation risks are as low as reasonably achievable, all such risks, whether arising from normal operations or from abnormal or accident conditions, must be assessed (using a graded approach) a priori and periodically reassessed throughout the lifetime of facilities and activities.”

SAFETY FUNDAMENTALS (2/2)SAFETY FUNDAMENTALS (2/2)


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IAEA SAFETY GUIDES ON PSA (2010)IAEA SAFETY GUIDES ON PSA (2010)


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GENERAL STATUS OF PSA

PSA performance:• Operating NPPs

Level 1 PSA - practically all currently operating NPPs Level 2 PSA - performed or being pursued for many of them Level 3 PSA is still not widely performed PSA is usually performed by utility organizations

• New NPPs Level 1 PSA (and often Level 2 PSA) Usually performed by designers and included in the safety case

High-level use of PSA results:• Comparison with risk targets or limits expressed in terms of

specific values of risk metrics

• In many countries, risk targets for new NPPs are more stringent, implying that the safety level of new NPPs should be higher


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OBJECTIVES & SCOPE OF THE TM

The objective of this Technical Meeting (TM) is to serve as an international forum for presentations and presentations and discussionsdiscussions on the current practicescurrent practices pertaining to the development of PSA for new NPP designsdevelopment of PSA for new NPP designs

Specific focus on insights and special featuresinsights and special features related to methodological aspectsmethodological aspects of Level 1 and Level 2 PSA for new NPP designs• Reliability of passive safety systems, computer based I&C• HRA• Insufficient information• Consideration of the impact from internal and external hazards,

etc.

National practices from the perspective of both designer/utility designer/utility organizations and regulatory bodiesregulatory bodies


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EXPECTED OUTCOME

The results of the meeting will be published as a technical report (Working Material) as soon as possible after the meeting

• The report will serve as a basis for future IAEA activities relating to PSA for new NPP design

• Summary of WG discussions, conclusions, recommendations for future activities, and papers will be included


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WORKING PROCESS (1/2)

Presentations by participants – first three days• Panel discussion at the end of each day

Working group activities – one day (Thursday)• Two groups – Chairs will be elected – topics will be

definedParticipants’ suggestions are welcome

• Detail discussion and documenting views of the WGs

• Draft conclusions and recommendations for future IAEA’s activities

General discussion, finalization of conclusions and recommendations – the last day


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WORKING PROCESS (2/2)

Tight agenda - 27 presentations; please:• Observe 30 min per presentation, incl. 5 min for questions

• Copy your presentation in the meeting room computer during the breaks before the session where you will present

• Start the name of the PPT- & DOC-file (paper) with the number assigned to your presentation in the agenda, example:

‘P1 - Object-Agenda_TM-PSA-New-Design_Kuzmina’

Please copy the final version of your full paper in the dedicated folder on the desktop before Thursday morning

Working time: 9:00 – 17:00• Coffee breaks: 10:30 – 11:00

15:30 – 16:00

• Lunch break: 12:30 – 14:00

• Cocktail party on Tuesday at 18:00 in the VIC restaurant


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OVERVIEW OF THE AGENDA

Rev1_Agenda TM New NPP PSA Oct1-5-2012.doc


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THANK YOU FOR YOUR ATTENTION

Documents

International Atomic Energy Agency Technical Meeting on Probabilistic Safety Assessment for New Nuclear Power Plants’ Design IAEA, Vienna, Austria October