Strengthening Nuclear Safety in Canada: Regulatory Perspective Post Fukushima Ramzi Jammal Executive Vice-President and Chief Regulatory Operations Officer Canadian Nuclear Safety Commission IAEA International Experts’ Meeting March 20, 2012
Strengthening Nuclear Safety in Canada: Regulatory Perspective Post Fukushima
Ramzi Jammal Executive Vice-President and Chief Regulatory Operations Officer Canadian Nuclear Safety Commission IAEA International Experts’ Meeting March 20, 2012
Canadian Nuclear Safety Commission
Regulates the use of nuclear energy and materials to protect the health, safety and security of Canadians and the environment; and to implement Canada’s international commitments on the peaceful use of nuclear energy.
65 years of nuclear safety!
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Fukushima: CNSC Regulatory Actions
On March 17, 2011, the CNSC issued an order to all Canadian Class I nuclear facilities licensees to:
• Review initial lessons learned and re-examine safety cases CNSC Task Force convened to evaluate operational, technical and regulatory implications: “Canadian Stress Test”
• Short-term actions to confirm readiness of installed equipment • Long-term measures to update safety case of nuclear power plants (NPPs)
CNSC carried out focused inspections at all nuclear power plants on: seismic qualification, fire, flooding, backup power and hydrogen igniters and passive recombiners CNSC staff updates to Commission members through public commission meetings On August 5, 2011, External Advisory Committee established
• Independent review of CNSC actions in response to the Fukushima event • Independent reporting to the President of the CNSC
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IRRS Follow-up Mission
The 2011 Integrated Regulatory Review Service (IRRS) mission Follow-up to the 2009 report CNSC’s actions after Fukushima were prompt, robust and comprehensive IRRS Report and Management Response are publicly available on the CNSC Web site http://www.nuclearsafety.gc.ca/eng/about/international/irrt/
Strong support of Canada’s nuclear regulatory framework
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CNSC Safety Review Criteria
Considered all available international reports on lessons learned Structured along the lines of defence in depth: • Station design for external hazards
- Confirmation of design basis - Protection against external hazard of lower frequency and
higher magnitude than assumed in design basis • Impact of beyond design basis events (BDBEs)
- Availability of emergency water and power systems - Hydrogen mitigation - Irradiated fuel bay (IFB) cooling
• Severe accident management measures • Emergency preparedness and response • CNSC regulatory framework and processes
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CNSC Task Force Conclusions and Recommendations
Conclusion: • “Canadian NPPs are safe and the risk posed to the health and
safety of Canadians or to the environment is small”
Task Force made 13 recommendations subdivided into 3 main categories: • Strengthening defence-in-depth of Canadian NPPs to withstand
events of very low probability • Enhancing emergency preparedness/response in Canada • Improving CNSC regulatory framework and processes
Intended to further enhance the safety of NPPs in Canada and will reduce associated risk to as low as reasonably practicable
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CNSC Task Force Recommendations Strengthen Defence in Depth
Containment filtered venting at Point
Lepreau
PARS Seismic route to SCA Emergency power generator
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CNSC Task Force Recommendations
Enhance offsite emergency preparedness/ response: • Ensure emergency response organizations will be capable
of responding effectively in a severe event and/or multi-unit accident(s)
• Conduct sufficiently challenging emergency exercises • Review federal and provincial multi-jurisdictions nuclear
emergency plans and programs
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CNSC Action Plan - Public and Stakeholder Input
Two rounds of consultation with the public and stakeholders on the: • Task Force Report • Action plan arising from the Task Force (TF) Report
October 28, 2011 – December 1, 2011 (completed) • CNSC Fukushima Task Force Report and Management Response
December 21, 2011 – February 03, 2012 (completed) • Draft CNSC staff action plan and disposition of comments on the TF Report
February 03, 2012 – March 03, 2012 (completed) • Disposition of comments and revision of the draft CNSC Staff Action Plan
February 17, 2012 • Licensees notified of site-specific Fukushima action items (FAIs)
March 02, 2012 – April 03, 2012 (completed) • Posting of Commission Member Document for public comment on the
CNSC Staff Action Plan and disposition report of comments
May 03, 2012 • Commission public meeting on the revised CNSC Staff Action Plan
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Implementation of Task Force Recommendations
Site-specific actions will be implemented: • Short term: 12 months – started, to be completed by December 2012 • Medium term: 24 months – by December 2013 • Long term: 48 months – by December 2015 • Implementation by NPPs has commenced for all actions
Fukushima action items (FAIs): • Generic elements • Site-specific items
Tracking of implementation will be monitored by staff Once the action plan is endorsed by the Commission: • CNSC staff will report annually to the Commission on the status of
implementation
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Canadian Industry Response
Responded with diligence • Identified lessons learned, performed reviews to identify gaps and
opportunities for improvement, made progress Strong cooperation domestically and internationally
• One Canadian operator (OPG/Pickering) awarded a strength by WANO for the response
Timely response to CNSC orders • All licensees responded by April 1, 2011, on short term actions • All licensees submitted comprehensive assessments to the CNSC in July 2011
Assessments structured along the lines of defence-in-depth, as per CNSC safety review criteria:
• Station design for external hazards • Impacts of beyond design basis events (BDBEs) • Severe accident management measures for BDBEs including severe accidents (SAs) • Emergency planning and response
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Canadian Industry Response
Assessments confirmed safety of NPPs • Identified opportunities to further improve defences
for beyond design basis events • Physical improvements to NPPs have commenced • Focus of improvements is on severe accident prevention, in
addition to severe accident mitigation and emergency response
Augmented flood protection Emergency mitigation equipment for alternate cooling to stand-by
generators
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What We Have Learned
Nuclear events are no longer considered a local event A global event affecting regulators, operators and all levels of government Global safety is a must: starting with the IAEA
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The Path Forward
IAEA: • Commendation to the IAEA on the progress to date and its action plan • Time to review the role of the IAEA
– When was the last time BoG discussed safety issues such as IRRS findings?
Real, transparent peer reviews • Consistent and transparent stress tests with objective and technology
neutral approach to lessons learned • No commercial competition on basis of nuclear safety
Safety standards to include governance and independence of regulator Reporting of non-responsive regulator to highest levels nationally and internationally, similarly to non-proliferation and security Recognition of important role of INPO and WANO, especially in exposing “non-responding” operators and regulators
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The Path Forward
Public trust • Regaining of public trust in safety through
communication, openness and transparency
Challenges facing the international regulatory community in the recovery phase • Occupational dose limits are not adequate for
recovery - rehabilitation • Need to develop international/national regulatory
limits for recovery phase – IAEA, ICRP
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The Path Forward
Redefining design basis - design extension conditions
• Guidance on Requirement 20 in IAEA SSR-2/1
– Additional scenarios to be addressed
– Severe accident phenomena to be addressed in containment designs
• As part of the life extension in Canada, all licensees have to meet modern safety goals
– Complementary design features for selected beyond design basis and severe accidents
– Containment filtered venting (already installed at Point Lepreau), PARS for hydrogen mitigation, multiple connection points for coolant addition
PARS
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Conclusions
CNSC’s response to events in Japan • Timely, transparent and comprehensive • Identified by the Integrated Regulatory
Review Service (IRRS) mission as a good practice that should be used by other regulatory bodies
Canadian industry response • Timely response to CNSC directive
– All licensees responded by April 1, 2011, on short term actions
• One Canadian operator (OPG) awarded a strength by WANO for the response
• Several key actions in the CNSC Action Plan are already complete
Canada’s nuclear power plants are safe
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Conclusions
Role of the IAEA • Mandatory safety standards • Design extension conditions
– More explicit extension of the design basis with inclusion of selected beyond design basis and severe accidents in the design
– Enhancement to IRRS modules pertaining to the extension of the design basis
• Safety reporting to the BoG
Role of nuclear industry in continuation of safety • Sharing industry trends with external organizations
Public trust
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We Will Never Compromise Safety
Thank You nuclearsafety.gc.ca