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World Association of Nuclear Operators

“Lessons learned, WANO action to improve

Nuclear Safety”

IAEA Ministerial Conference, Vienna 21 June 2011

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IntroductionIntroduction

1986 2011

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March 11, Earthquake and Tsunami

March 11, Earthquake and Tsunami

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Nuclear LandscapeNuclear Landscape

The Nuclear landscape will change

but Energy demand worldwide

remains !

Importance of WANO’s role

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Strengthening WANOStrengthening WANO

WANO will emerge stronger !StandardRequirements

INTERNATIONALLEVEL

REGIONAL&

NATIONALLEVEL

Operators

WANO

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oversightGovts&

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Nuclear Safety ResponsibilityNuclear Safety Responsibility

INTERNATIONALLEVEL :

NATIONALLEVEL :

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Individual Responsibility

Collective Responsibility

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International Safety OrganisationInternational Safety Organisation

Cooperation

Lessons learned

oversightNal Reg

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INTERNATIONALLEVEL

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NATIONALLEVEL

Operators

WANO

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Governts

IAEA

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Cooperation

Lessons learned

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Saf

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Aut

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What does Nuclear Safety mean ?What does Nuclear Safety mean ?

Control of reactivity / stored energy

Core Cooling / decay heat removal

Containment / radiation & radioactive waste

The 3 Safety Functions

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Safety functions in Nuclear accidents

Safety functions in Nuclear accidents

Reactivity

Cooling

Containment

T.M.I.Fukushima

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Areas to reinforce Nuclear SafetyAreas to reinforce Nuclear Safety

Robust design

T.M.I.Fukushima

Decay heatremoval

Emergency Planning

Excellent operation&

management of transients

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First lessons from the Fukushima accidentFirst lessons from the Fukushima accident

Within 6 days, WANO issued a SOER(March, 17 2011)

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First lessons from the Fukushima accidentFirst lessons from the Fukushima accident

All WANO members responded to SOERExample of analysis : Station Black-out

0

5

10

15

20

25

30

35% of units

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• WANO will, with its members fully committed, contin ue to prevent TMI & Chernobyl types Accidents by focusing PRs on Nuclear Safety Fundamentals, including :

� Compulsory high quality “AFIs”

� Check SOER recommendations’ implementation

• Improve Operating Experience, sharing betweenoperators :�Better define when a station must report�Timely report event�Implement SOER recommendations

WANO improvementsWANO improvements

•Define what is expected of WANO members & the follow -up on members that are not fully participating

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•Better define WANO’s roles & responsibilities of WANO & WANO members in an emergency :

� Reinforce the Emergency Team� Inventory of available equipment from other members� Coordination with IAEA and other organisations

As a result of Fukushima :

WANO’s Commission to propose improvementsWANO’s Commission to propose improvements

• Close the SOER gaps in emergency preparednessof each utility :

� Procedures� Equipment availability� Drills & training

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WANO’s Commission to propose improvements

WANO’s Commission to propose improvements

Cooperation

Lessons learned

oversightNal Reg

INRAMDEP

WENRA

Har

mon

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ion

INTERNATIONALLEVEL

REGIONAL&

NATIONALLEVEL

Operators

WANO

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O.E

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Governts

IAEA

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mon

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Cooperation

Lessons learned

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Cre

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INPO

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WNAENISS

� Coordination with IAEA and other organisations :B

ench

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king

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• Improve Peer Reviews to include :

� Emergency preparedness

� Fuel pools / storage controls

WANO’s Commission to propose improvementsWANO’s Commission to propose improvements

� Robustness of design / mitigation plans to extreme natural events including modifications that can red uceoff-site releases following severe accident conditi ons

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Additional thoughtsAdditional thoughts

Risk of loss of trust by the public

Risk of complacency of some operators

Risk of loss of trust by nuclear workers

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WANO’s conclusionWANO’s conclusion

• Nuclear landscape will be different� WANO must change

• Individual & collective responsibility

• Credible Regulator / WANO strong & complementary

• Guard against complacency &build back trust in Nuclear

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WANO’s conclusionWANO’s conclusion

• Improve Peer Review & Operating

Experience processes to continue to prevent TMI & Chernobyl types accidents

• Close gaps in Emergency Preparedness & better manage heat removal

• WANO must have the trust of its Members : efficiency, confidentiality,transparency

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WANO’s conclusionWANO’s conclusion

WANO stronger

and more effective

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World Association of Nuclear Operators

http://www.wano.info