iaea international atomic energy agency international standards for npp i&c presented to...
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IAEAInternational Atomic Energy Agency
International Standards for NPP I&C
Presented toTWG-NPPIC
2009 May 21Vienna, Ausria
Gary [email protected]+43 (1) 2600-22671
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Three organizations develop I&C standards that are used world-wide
• IAEA
• International Electrotechnical Commission
• IEEE
• I’ll speak about the first two
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The IAEA statue establishes the agencies standards development function
• One function of the IAEA is “to establish or adopt standards of safety … and to provide for the application of these standards, … at the request of a State, to any of that State's activities in the field of atomic energy”• These standards are to be established in consultation and, where
appropriate, in collaboration with the competent organs of the United Nations and with the specialized agencies concerned
• IAEA statute > http://www.iaea.org/About/statute_text.html
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The purpose of IAEA Safety Guides
• Provide guidance on how to comply with the safety requirements (In our case NS-R-1)
• Indicate international consensus that it is necessary to take the measures recommended (or equivalent alternatives)
• Reflect best practices.
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Use of IAEA Safety Guides
• Used as the basis for IAEA design reviews, regardless of the national regulations
• Some member states incorporate IAEA requirements (NS-R-1) and safety guides into their regulations
• Some member states incorporate IAEA requirements into their regulations but treat safety guides as recommendations
• Some member states use IAEA requirements and safety guides as references in development of regulations or national standards. (this is the most common)
• Some member states do not use IAEA safety guides at all• IEC uses NS-G-1.3 as the source of elementary guidelines for I&C
systems important to safety. • IEC standards provide further guidance on implementing these principles. • NS-G-1.3 is unique in this regard
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IAEA Guidance Overview
Safety of nuclear facilities
Radiation protection and safety of radiation sources
Safe management of radioactive waste
Safe transport of radioactive material
General safety (cross-cutting themes)
Legal and governmental infrastructure
Emergency preparedness and response
Management systems
Assessment and verification
Site evaluation
Radiation protection
Radioactive waste management
Decommissioning
Remediation of contaminated areas
Thematic standards
Nuclear power plants: design
Radiation related facilities and activities
Research reactors
Fuel cycle facilities
Waste treatment and disposal facilities
Transport of radioactive material
Facilities specific standards
Nuclear power plants: operation
Safety Fundamentals
All IAEA safety standards are available at:
http://www-ns.iaea.org/standards/
All free!
All IAEA safety standards are available at:
http://www-ns.iaea.org/standards/
All free!
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NS-R-1: “Safety of NPPs – Design” is the top IAEA design requirements document
• Not legally binding• Adopted as regulation in some states• Influenced regulations in other states
• Not intentionally LWR specific• Responds to safety fundamentals• Prepared by engineers - little lawyer input• Outside standards are not incorporated• No public comment process• Represent a broad consensus
• All member states have the opportunity to comment• Endorsed by the Commission for Safety Standards• Approved by the IAEA Board of Governors
• Other safety standards also relevant at a second order• For example, GS-R-3 on management systems (including quality)
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Current safety guidance for design
• Safety of Nuclear Power Plants: Design Safety Requirements NS-R-1• Software for Computer Based Systems Important to Safety NS-G-1.1• Safety Assessment and Verification NS-G-1.2• Instrumentation and Control Systems Important to Safety NS-G-1.3• Design of Fuel Handling and Storage NS-G-1.4• External Events Excluding Earthquakes NS-G-1.5• Seismic Design and Qualification NS-G-1.6• Protection Against Internal Fires and Explosions NS-G-1.7• Design of Emergency Power Systems NS-G-1.8• Design of the Reactor Coolant System and Associated Systems NS-G-1.9• Design of Reactor Containment Systems NS-G-1.10• Protection against Internal Hazards other than Fires and NS-G-1.11• Design of the Reactor Core NS-G-1.12
• Radiation Protection Aspects of Design NS-G-1.13
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There is plan to restructure IAEA safety guidesThis plan affects the design safety guides
Safety Classification
Deterministic Safety Analyses
PSA for Design & Operations
Design of I&C Systems
NS-G-1.2 Safety Assessment &Verification
Radiation Protection & Radioactive Waste Management
NS-G-1.4Fuel handling & storage systems
Reactor Containment Systems & Other Buildings
NS-G-1.8Reactor Coolant & Associated Systems
NS-G-1.12Reactor Core
Protection against Internal & External Hazards
NS-G-1.6Seismic Design & Qualification
NS-G-1.3I&C Systems Important to Safety
NS-G-1.1 Software for Computer Based Systems Important to Safety
NS-G-1.5External Events Excluding Earthquakes
NS-G-1.7 Protection Against Internal Fires & Explosions
NS-G-1.8Design of Emergency Power Systems
NS-G-1.10 Design of Reactor Containment Systems
NS-G-1.9Design of the RCS & Associated Systems
NS-G-1.11 Protection against Internal Hazards except Fires & Explosions
NS-G-1.12 Design of the Reactor Core
NS-G-1.13Radiation Protection Aspects of Design
NS-G-1.4Fuel Handling & Storage
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Auxiliary Systems
Electric Power Systems
Completion scheduled for 2015+- material from additional documents to be included
Existing Structure New Structure
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Update of the I&C and electrical guides has started
• I&C Guide• Incorporate and replace the
software guide • Much less detail on software
• Leave details to standards
• Update to address new topics and new consensus, e.g.,
• Communications independence
• Soft control
• Cyber security
• Complex electronics
• Design for aging management
• Electrical Guide• Expand scope from emergency
power systems to all electrical systems
• To some extent this is a restructuring
• Offsite power now in an annex
• Much of the emergency power guidance is applicable to all systems
• Check guidance for completeness and tie to NS-R-1
• E.g., note the role of breaker coordination in limiting the effects of internal events, such as fire
• Integrate into new structure of safety guides• May involve broadening scope from NPP to Nuclear Installations
• Identify and eliminate unnecessary conflicts with national approaches
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Work plan
• Solicit input• Meetings to develop outline
• About 5 experts• About August
• Develop draft (homework)• Post draft for review• Meeting to discuss draft
• About November
• Revise draft (homework)• Post again for review• Meeting to review draft
• Different or larger group• About January 2010
• Finalize draft (homework)• Possibility of extra meetings if
needed
• Solicit input• Meetings to develop outline
• About 5 experts• About August
• Develop draft (homework)• Post draft for review• Meeting to discuss draft
• About November
• Revise draft (homework)• Post again for review• Meeting to review draft
• Different or larger group• About January 2010
• Finalize draft (homework)• Possibility of extra meetings if
needed
• Draft outline and current document is available on-line
• The website allows you to:• Initiate or participate in threaded
discussions• Post comments • Post markups
• If you post a mark-up please also post comments explaining the markup
• This is the first time I’ve tried a web-based process, so• Advise me on how to improve the
site.• Be patient
• You need an account to access
IAEAInternational Atomic Energy Agency
If you wish to participate
Contact me at
Or
Give me a business card
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IEC SC45A prepares standards applicable to electronic and electrical functions for I&C of nuclear facilities
• By agreement between IEC and IAEA SC45A standards provide detailed implementation guidance for IAEA safety standards.
• Thirty-one nations are members of SC45A• Twenty-two are voting members
• About half are regular, active participants
• Currently there are 7 working groups• Sensors & Measurements
• Digital Systems
• Special Process Measurements and Rad Monitoring
• Reliability
• I&C systems
• Modernization & Ageing Management
• Sixty-six standards issued to date
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Work in progress - I&C principles
• IEC 61513 Ed. 2.0 Nuclear power plants - Instrumentation and control important to safety - General requirement for systems
• IEC 61226 Ed. 3.0 Nuclear power plants - Instrumentation and control important to safety - Classification of instrumentation and control functions
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Work in progress - Sensors & Measurements
• IEC 60737 Ed. 2.0 Nuclear Power Plants - Instrumentation important to safety - Temperature sensors (In-core and primary coolant circuit) : Characteristics and test methods
• IEC 62584 Ed. 1.0 Nuclear Power Plants - Instrumentation important to safety - Application of Gamma Thermometers (GT) for Local Power Range Monitor (LPRM) calibration
• PNW 45A-750 Ed. 1.0 Nuclear Power Plants - Instrumentation important to safety - Thermocouples : Characteristics and test methods
• IEC 60988 Ed. 2.0 Nuclear power plants - Instrumentation important to safety - Acoustic monitoring systems for detection of loose parts: Characteristics, design criteria and operational procedures
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Work in progress - Radiation Monitoring
• IEC 60951-1 Ed. 2.0 Nuclear power plants - Instrumentation important to safety - Radiation monitoring for accident and post-accident conditions - Part 1: General requirements
• IEC 60951-2 Ed. 2.0 Nuclear power plants - Instrumentation important to safety - Radiation monitoring for accident and post-accident conditions - Part 2: Equipment for continuous off-line monitoring of radioactivity in gaseous effluents and ventilation air
• IEC 60951-3 Ed. 2.0 Nuclear power plants - Instrumentation important to safety - Radiation monitoring for accident and post-accident conditions - Part 3 : Equipment for continuous high range area gamma monitoring
• IEC 60951-4 Ed. 2.0 Nuclear power plants - Instrumentation important to safety - Radiation monitoring for accident and post-accident conditions - Part 4: Equipment for continuous in-line or on-line monitoring of radioactivity in process streams
These are actually in publication
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Work in progress - Control Rooms & Human Factors
• IEC 60965 Ed. 2.0 Nuclear power plants - Control rooms - Supplementary control points for reactor shutdown without access to the main control room
• PNW 45A-748 Ed. 1.0 Nuclear Power Plants - Control rooms - Computer based procedures
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Work in progress - Digital Systems
• IEC 61500 Ed. 2.0 Nuclear Power Plants - Instrumentation and control important to safety - Data communication
• IEC 62566 Ed. 1.0 Nuclear Power Plants- Instrumentation and control important to safety- Selection and use of complex electronic components for systems performing category A functions
• IPNW 45A-742 Ed. 1.0 Nuclear Power Plants - Instrumentation and control systems important to safety - Requirements for Computer Security Programmes
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Work in progress - Ageing
• IEC 62465 Ed. 1.0 Nuclear Power Plants - Instrumentation and control important to safety - Management of aging of electrical cabling systems
• IEC 62582-1 Ed. 1.0 Nuclear Power Plants - Instrumentation and control important to safety - Electrical equipment condition monitoring methods - Part 1: General
• IEC 62582-2 Ed. 1.0 Nuclear power plants - Instrumentation and control important to safety - Electrical equipment condition monitoring methods - Part 2: Method descriptions - Indenter modulus
• IEC 62582-3 Ed. 1.0 Nuclear power plants - Instrumentation and control important to safety - Electrical equipment condition monitoring methods - Part 3: Method descriptions - Elongation at break
• IEC 62582-4 Ed. 1.0 Nuclear power plants - Instrumentation and control important to safety - Electrical equipment condition monitoring methods - Part 4: Method descriptions - Oxidation induction temperature
• IEC 62582-5 Ed. 1.0 Nuclear power plants - Instrumentation and control important to safety - Electrical equipment condition monitoring methods - Part 5: Method descriptions - Optical cables
• PWI 45A-1 Ed. 1.0 Management of ageing of nuclear power plant sensors
• PWI 45a-3 Ed. 1.0 Management of aging of nuclear power plant connectors
• PWI 45a-4 Ed. 1.0 Management of aging of nuclear power plant relays
• PWI 45a-5 Ed. 1.0 Management of aging of nuclear power plant electronics
• PWI 45A-6 Ed. 1.0 Obsolescence management for digital and programmable I&C in nuclear power plant
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How to participates
• Participants must are representatives of their nation• You must be nominated by your national committee of the IEC
• Formal correspondence goes through the national committee
• Each country has a chief delegate for SC45A
• Next meeting Yokohama, Japan• 2009 September 10 to 18
• Much information is available at • www.iec.ch