Small Modular Reactor Update – Development, Deployment and...
Transcript of Small Modular Reactor Update – Development, Deployment and...
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Commission Meeting August 22-23, 2018 CMD 18-M31
Update on the Development, Deployment and Regulation of Small Modular Reactors
CNSC Staff Presentation
nuclearsafety.gc.ca e-Doc 5401043 (PPT) e-Doc 5605405 (PDF)
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• Background • National Scan – Recent Developments • CNSC International Engagement • Overview of SMR Technologies • Vendor Design Review Update • Strategy for Readiness
Table of Contents Commission Meeting August 22-23, 2018, CMD 18-M31
Page 2 nuclearsafety.gc.ca
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BACKGROUND
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CMD 14-M8, The Evolution of Nuclear Reactor Technologies, provided to the Commission for information
• Overview of Generations I to IV and how safety considerations were reflected in the design
• Discussion on what Small Modular Reactors (SMRs) are and what they mean from a regulatory standpoint
• Overview of the CNSC’s Vendor Design Review Process
Last presentation to the Commission February 5, 2014 Commission Meeting August 22-23, 2018, CMD 18-M31
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Technology Evolution Commission Meeting August 22-23, 2018, CMD 18-M31
nuclearsafety.gc.ca
Regulatory Approach
Objective based with few prescriptive
requirements
More prescriptive More regulatory
certainty
New safety claims and no operational experience – return to objective based?
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• “SMR” is generally used as a marketing term
• Vendors are proposing alternative approaches for design and deployment that depart from tradition
• Many will employ multiple novel technological approaches: – passive safety features
– extensive use of factory-built modules
– fewer staff on site compared to traditional reactors
Small Modular Reactors (SMRs) Commission Meeting August 22-23, 2018, CMD 18-M31
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Examples of different deployment strategies include: • Security by design • Remote operation • Transportable / relocatable cores • Extensive use of factory-constructed facility / reactor modules
Deployment Strategies Commission Meeting August 22-23, 2018, CMD 18-M31
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Proponents need to address all Safety and Control Areas and demonstrate that there is adequate defence-in-depth
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• Many Gen IV designs are based on concepts that were originally developed in the 1950’s to 1970’s
• Each technology presents new approaches and innovative features that need to be proven
– different reactor cores, fuel types, configurations and levels of enrichment (e.g., graphite moderator or molten fuels)
– different ways to cool the core (e.g., molten lead, gas, sodium & molten salts)
• New technologies have potential advantages over existing designs (e.g., passive design)
Building on the past while looking to the future Commission Meeting August 22-23, 2018, CMD 18-M31
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Processes are in place to ensure safety
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• The International Atomic Energy Agency considers an SMR to be “reactors that produce electricity of up to 300 MW(e)”
• Advances in methods of analysis and materials-sciences mean that these designs are potentially becoming achievable now
• Proponents are reinvigorating non-water cooled reactor technologies
• Capacity for power generation where traditional plants are not practical or required
Global Context Commission Meeting August 22-23, 2018, CMD 18-M31
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Significant national and international interest to address climate change
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• Nuclear Power Demonstration (NPD) − 1962 to 1987
− 22 MWe, Pressurized Heavy Water Reactor (CANDU)
Early Canadian Designs Commission Meeting August 22-23, 2018, CMD 18-M31
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• Douglas Point Generating Station − 1968 to 1984 − 220 MWe, Pressurized Heavy Water
Reactor (CANDU)
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• Calder Hall, UK − 1956 to 2003
− 4 units at 60 MWe each, gas-cooled
Early International Designs Commission Meeting August 22-23, 2018, CMD 18-M31
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• Dresden Unit 1, USA − 1960 to 1978 − 210 MWe, Boiling Water Reactor
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(Photos courtesy of Rosenergoatom)
Akademik Lomonosov, Russia
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Commission Meeting August 22-23, 2018, CMD 18-M31
− July 2018 onwards
− 2 units at 35MWe each, water-cooled
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NATIONAL SCAN – RECENT DEVELOPMENTS
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• Government of Canada responds to House of Commons Standing Committee report agreeing to support the development of SMRs (October 2017)
• Natural Resources Canada now facilitating the Canadian SMR Roadmap (Report to Cabinet October 2018)
– CNSC is participating in our role as the nuclear regulator – observing and providing clarifications on technical and regulatory issues
Federal Activities Commission Meeting August 22-23, 2018, CMD 18-M31
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• Ontario Ministry of Energy Feasibility of the Potential Deployment of Small Modular Reactors (SMRs) in Ontario
• Established electrical utilities: – are interested in becoming SMR
operators in Canada – are providing advice to SMR vendors – have introduced a new CANDU
Owner’s Group (COG) forum to discuss SMR issues
Provincial & Territorial Activities Commission Meeting August 22-23, 2018, CMD 18-M31
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OPG to Seek Pan-Canadian Small Modular Reactor Strategy to Fill
2030 Supply Gap “Ontario Power Generation [OPG] plans
to fill a predicted supply gap in the 2030s with new nuclear capacity and
the utility is collaborating with Saskatchewan on the potential for a Pan-Canadian fleet of Small Modular
Reactors” OPG's Vice President of Strategy & Acquisitions, 2017
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Positioning itself to provide science and technology services • Engaged with SMR vendors for a wide range of activities • Stated goal to ‘host an SMR on a CNL site by 2026’
Request for Expression of Interest: CNL’s SMR Strategy • Sought to better understand market demands for activities related to
SMRs • Vendor, utility, and provincial government interest
CNL’s Invitation for SMR Demonstration Projects • A number of proponents responded
Canadian Nuclear Laboratories (CNL) Activities Commission Meeting August 22-23, 2018, CMD 18-M31
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Stakeholders: • Want to understand the Canadian regulatory environment – they
have questions about how to engage the CNSC and our regulatory approach, including the licensing process
CNSC staff are: • Explaining how existing regulatory framework tools can be used • Explaining the principles of our requirements such as defence-in-
depth, safety margins and graded approach
CNSC: Informing Stakeholders (1/3) Commission Meeting August 22-23, 2018, CMD 18-M31
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CNSC staff are actively engaging with stakeholders to ensure expectations are clear
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CNSC has been engaging stakeholders through:
• Vendor design reviews • Pre-licensing on prototypic facilities • Discussions on deployment of SMRs • Workshops and participation in conferences • Presentations to municipalities and the
public
CNSC: Informing Stakeholders (2/3) Commission Meeting August 22-23, 2018, CMD 18-M31
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CNSC Staff are listening and considering feedback from stakeholders
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• Published Small Modular Reactors: Regulatory Strategy, Approaches and Challenges and the What We Heard Report
• SMR Licence Application Guide (LAG) – seeking public consultation July 2018
• Current focus: Challenges arising from novelties in design (pre-licensing)
• Focus will change as units are deployed − first units are likely to be prototypes or demonstration facilities on a “controlled” site − deployment of “standardized” units will face different challenges
CNSC: Informing Stakeholders (3/3) Commission Meeting August 22-23, 2018, CMD 18-M31
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CNSC’s existing regulatory requirements are suitable for regulating SMR activities
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• Vendors are engaging with the CNSC in vendor design reviews in preparation for possible deployment in Canada
– seeking to familiarize themselves with Canadian regulations and licensing processes
– expressing their intent to comply with requirements
• Vendors are actively engaging with existing Canadian nuclear utilities for support in their VDRs and looking forward to future operations
Vendor Activities Commission Meeting August 22-23, 2018, CMD 18-M31
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CNSC INTERNATIONAL ENGAGEMENT
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• International fora allow us to discuss common issues, share information and develop common positions
• Leads to more efficient and effective technical assessments
• Provides input to licensing and compliance framework to ensure international bench-marking and continuous improvement
• Sharing resources in the conduct of regulatory R&D
International Cooperation Commission Meeting August 22-23, 2018, CMD 18-M31
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• Nuclear Energy Agency: − Multinational Design Evaluation Program (MDEP) − Group on the Safety of Advanced Reactors (GSAR) − Working Group on the Regulation of New Reactors (WGRNR)
• Bilateral arrangements with other nuclear regulators • International Atomic Energy Agency (IAEA)
− exploring implications of SMRs on existing requirements
International Engagement Commission Meeting August 22-23, 2018, CMD 18-M31
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• Working with other nuclear regulators internationally to exchange unclassified technical information and cooperate on items such as:
− design, siting, construction, commissioning, operation, and decommissioning
− legislation, regulations, licences, regulatory codes, standards, criteria and guides
− technical reports and nuclear safety assessments, including those related to radiological safety
Co-operation on Technical Reviews Commission Meeting August 22-23, 2018, CMD 18-M31
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“ to identify, understand and address key regulatory challenges that may emerge in future SMR regulatory discussions. This will help enhance safety, efficiency in licensing and enable regulators to inform changes, if necessary, to their requirements and regulatory practices”
IAEA SMR Regulators’ Forum Commission Meeting August 22-23, 2018, CMD 18-M31
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• Understand impacts of novelties on existing frameworks and develop common positions
IAEA SMR Working Groups Commission Meeting August 22-23, 2018, CMD 18-M31
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2015-17 (Pilot) 2017-2020 (Focus on Near-Term Licensing)
1. Emergency Planning Zones 2. Application of Defence-in-Depth 3. Application of Graded Approach
1. Licensing Issues (including demonstration plants, and human factors)
2. Design and Safety Analysis Issues 3. Manufacturing, Construction and Commissioning
Issues
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OVERVIEW OF SMR TECHNOLOGIES
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Molten Salt Reactor Commission Meeting August 22-23, 2018, CMD 18-M31
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(Courtesy of Terrestrial Energy)
Typical Features • Molten salt coolant • Molten salt or solid fuel • Graphite moderated or
fast neutron spectrum reactor
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High Temperature Gas Reactor Commission Meeting August 22-23, 2018, CMD 18-M31
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Typical Features • Helium cooled • TRISO fuel • Graphite
moderated
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Liquid Metal Cooled Reactor Commission Meeting August 22-23, 2018, CMD 18-M31
nuclearsafety.gc.ca
1) Control rods 2) Heat exchanger 3) Reactor Core 4) Pump 5) Reactor vessel 6) Concrete 7) Human scale
(Courtesy of Advanced Reactor Concepts Nuclear) Page 30
Typical Features • Sodium, lead or bismuth
cooled • Metal or ceramic fuel • Fast reactor –
no moderator
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Solid State or Heat Pipe Reactor Commission Meeting August 22-23, 2018, CMD 18-M31
nuclearsafety.gc.ca Page 31
Typical Features • Cooling via heat pipes • Solid Fuel – various types • Graphite moderated • Very few moving parts
Depiction of Atomic Energy of Canada’s Nuclear Battery Concept, 1988 (Colour Image courtesy of Dunedin Energy Systems)
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Potential Safety Features Commission Meeting August 22-23, 2018, CMD 18-M31
nuclearsafety.gc.ca
• Power level self-regulated through inherent reactivity feedback • Passive heat removal systems (protecting primary coolant and core
from overheating) • Fuel highly resistant to high temperature events and with stronger
fission products retention • Relatively long grace time for operator action during and after events
Many of the new designs are aiming to include the following safety features:
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• Demonstration of novel safety features and their limits (e.g., new concepts for passive safety systems will have to be proven)
• Understanding the long term performance of new materials with limited operational experience
• Understanding how in-service inspections will be addressed for integral reactors
Regulatory Areas of Interest Commission Meeting August 22-23, 2018, CMD 18-M31
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VENDOR DESIGN REVIEW UPDATE Commission Meeting August 22-23, 2018, CMD 18-M31
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No. Country of origin Company (Design) Reactor Type Elec. Output
per unit Status
1 Canada - U.S.
Terrestrial Energy (IMSR-400) Molten salt (graphite moderated) 200 MWe PHASE 1 - Completed
PHASE 2 - Service Agreement signed
2 U.S.- Korea - China Ultra Safe Nuclear (MMR-5) High-temperature gas cooled (graphite moderated) 5 MWe PHASE 1 - Near completion
PHASE 2 - Service Agreement signed
3 Sweden - Canada LeadCold (SEALER) Liquid metal cooled - Lead (no moderator - fast spectrum) 3 to 10 MWe PHASE 1 - On hold
at vendor’s request
4 U.S. Advanced Reactor Concepts (ARC-100)
Liquid metal cooled - Sodium (no moderator - fast spectrum) 100 MWe PHASE 1 - In progress
5 U.K. Urenco (U-Battery) High temperature gas cooled (graphite moderated) 4 MWe PHASE 1 - Service Agreement under development
6 U.K. Moltex Energy (SSR-W300) Molten salt (no moderator - fast spectrum) 300 MWe PHASE 1 - In progress
7 Canada - U.S. StarCore Nuclear High-temperature gas cooled (graphite moderated) 20 MWe PHASE 1 & 2 - Service Agreement
under development
8 U.S. SMR LLC - a Holtec International Company (SMR-160)
Pressurized water (light water moderated - PWR) 160 MWe PHASE 1 - In progress
9 U.S. NuScale Power (NuScale) Pressurized water (light water moderated - PWR) 50 MWe PHASE 2*- Service Agreement under development
10 U.S. Westinghouse Electric (eVinci) Heat pipe / Nuclear battery (yttrium hydride moderated) < 25 MWe PHASE 2*- Service Agreement under
development
Status of Vendor Design Reviews Commission Meeting August 22-23, 2018, CMD 18-M31
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* Phase 1 objectives will be addressed within the Phase 2 scope of work
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• Stakeholders are encouraged to engage with the CNSC early • A VDR is an optional process that:
– provides feedback on vendor’s efforts to address Canadian requirements
– promotes early identification of key issues and obstacles to licensing – identifies important vendor and CNSC research activities – provides an opportunity for CNSC staff to become familiar with the
design • A VDR does not constitute an approval of a design
Vendor Designs Reviews (VDR) Commission Meeting August 22-23, 2018, CMD 18-M31
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• The VDR process is described in GD-385, Pre-licensing Review of a Vendor’s Reactor Design − covers standardized design topics such as reactor core, fuel, controls,
containment, human factors, security, decommissioning, etc.
• A VDR focuses on design and safety analysis and the managed processes supporting these activities
VDR Framework Commission Meeting August 22-23, 2018, CMD 18-M31
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• Phase 1 − determines if the vendor understands and intends to meet CNSC design
requirements
• Phase 2 − focus on identifying potential fundamental barriers to licensing
• Phase 3 − involves follow up on one or more focus areas chosen by the vendor
The 3 VDR Phases Commission Meeting August 22-23, 2018, CMD 18-M31
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VDR Insight for the Regulatory Framework Commission Meeting August 22-23, 2018, CMD 18-M31
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• The current regulatory framework can be used for new technologies
• Alternative approaches are being proposed and may influence continuous improvements to the regulatory framework
• Reviews are having positive impacts on the vendors’ design processes, including the management systems and R&D programs
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The VDR process: • Clarifies and reinforces CNSC’s regulatory requirements and expectations • Uses a technology neutral and consistent process for all vendors • Provides regulatory feedback early on in the design process • Helps vendors in assessing deployment readiness of their technology • Informs the licensing process and results in better licence applications • Allows the CNSC to prepare for a licence application
VDR in summary Commission Meeting August 22-23, 2018, CMD 18-M31
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STRATEGY FOR READINESS
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Increased regulatory certainty - fairness, rigour, efficiency, transparency
Establishment of technical readiness - knowledge and capacity, enabling processes
Establishment of priorities - what needs to be done and by when
Increased awareness - internally and with external stakeholders
CNSC Strategy for Readiness Commission Meeting August 22-23, 2018, CMD 18-M31
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Objectives
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Elements of Strategy Commission Meeting August 22-23, 2018, CMD 18-M31
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Provide Leadership and Coordination
Small Modular Reactor Steering
Committee (SMRSC)
Chaired by: Executive Vice-President and
Chief Regulatory Operations Officer
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Elements of Strategy Commission Meeting August 22-23, 2018, CMD 18-M31
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Regulatory framework Nuclear Safety and Control Act (NSCA), regulations, licences, regulatory documents
Risk-informed processes Managed processes covering strategic decision making Pre-licensing and licensing compliance
Capable and agile staff Capacity/capability Training International cooperation
Established processes for enabling decisions regarding the regulation of SMRs
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Elements of Strategy Commission Meeting August 22-23, 2018, CMD 18-M31
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Communicate
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• The CNSC’s regulatory framework is robust, flexible and based on decades of operating experience and can be applied to advanced reactor technologies
• The CNSC’s regulatory framework and internal processes are risk-informed and can be used to licence advanced reactors. It allows for proposing alternatives and the use of grading.
• Vendor design reviews are a well respected and useful service
• CNSC staff are actively engaging with stakeholders to ensure clarity of requirements and expectations
Conclusions Commission Meeting August 22-23, 2018, CMD 18-M31
nuclearsafety.gc.ca
The CNSC is ready and capable to licence SMRs
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• DIS-16-04, Small Modular Reactors: Regulatory Strategy, Approaches and Challenges − What We Heard Report
http://nuclearsafety.gc.ca/eng/acts-and-regulations/consultation/history/dis-16-04.cfm
ANNEX Commission Meeting August 22-23, 2018, CMD 18-M31
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nuclearsafety.gc.ca
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