Progress Report on
IAEA Safety Standards Update
Presented to
IEEE Nuclear Power Engineering Committee
Scottsdale, Arizona
January 2011
Gary Johnson
g.johnson@iaea.org
gljohnson@ieee.org
+43 (1) 2600-22671
IAEA
International Atomic Energy Agency
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
• Agency standards should reflect international
consensus about best practice
IAEA statute >
http://www.iaea.org/About/statute_text.html
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IAEA Safety Standards take different forms
• Requirements
• “Shall” statements
• Guides
• “Should” statements
• Provide guidance on
how to comply with
the safety
requirements (In our
case NS-R-1)
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• General
• Apply to a range of facilities,
activities, or installations
• Facilities and activities
include just about
everything that involves
ionizing radiation
• Installations include
reactors, and fuel cycle
facilities
• Specific
• Apply to a specific type of
facility or installation
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IAEA Guidance Overview
Safety Fundamentals
Thematic standards
Facilities specific standards
Legal and governmental infrastructure
Nuclear power plants: design
Emergency preparedness and response
Nuclear power plants: operation
Management systems
Research reactors
Assessment and verification
Fuel cycle facilities
Site evaluation
Radiation related facilities and activities
Radiation protection
Waste treatment and disposal facilities
Radioactive waste management
Decommissioning
Remediation of contaminated areas
Transport of radioactive material
General safety (cross-cutting themes)
Safety of nuclear facilities
Radiation protection and safety of radiation sources
Safe management of radioactive waste
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Safe transport of radioactive material
All IAEA safety standards are
available at:
http://www-ns.iaea.org/standards/
All free!
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Use of IAEA Safety Guides
• Basis for IAEA design reviews, regardless of the national
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regulations
Some member states use IAEA standards as regulations
Some member states use 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. 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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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
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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
Other safety standards also relevant at a second
order
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Current safety guidance for nuclear power plant
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 guides
NS-R-1
Design of Nuclear Power Plants
NS-G-1.1
Software for Computer Based Systems Important to Safety
SS-R-1
Design of Nuclear Power Plants
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Safety Classification
NS-G-1.2
Safety Assessment &Verification
Deterministic Safety Analyses
NS-G-1.3
I&C Systems Important to Safety
Design of I&C Systems
NS-G-1.4
Fuel Handling & Storage
NS-G-1.4
Fuel handling & storage systems
NS-G-1.5
External Events Excluding Earthquakes
Protection against Internal & External Hazards
NS-G-1.6
Seismic Design & Qualification
PSA for Design & Operations
NS-G-1.7
Protection Against Internal Fires & Explosions
Auxiliary Systems
NS-G-1.8
Design of Emergency Power Systems
Electric Power Systems
NS-G-1.9
Design of the RCS & Associated Systems
NS-G-1.8
Reactor Coolant & Associated Systems
NS-G-1.10
Design of Reactor Containment Systems
Reactor Containment Systems & Other Buildings
NS-G-1.11
Protection against Internal Hazards except Fires & Explosions
NS-G-1.12
Design of the Reactor Core
NS-G-1.12
Reactor Core
NS-G-1.13
Radiation Protection Aspects of Design
Radiation Protection &
Radioactive Waste Management
IAEA - material from additional documents to be included
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Completion scheduled for 2015
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Detailed plans for IAEA standards are on
the web
• http://www-ns.iaea.org/standards/
• Click on Our Work:Status of Safety Standards
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Update of the I&C guide
• Incorporate principles from computer systems guide
• Make level of detail consistent with other topics
• Update to address new topics and new consensus, e.g.,
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Architecture
CCF
Communications independence
Soft control
Computer security
Industrial qualified devices
HDL devices
Lifecycle process (Overall, individual system, H/W, S/W, HFE,
Security)
• Coordinate with MDEP Digital I&C Working Group
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I&C Team (so far)
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Mark Bowell, UKNII
John Harber, AECL
Hulbert Li, USNRC
Cam Ngo, Candesco
Huyn-Shin Park, KINS
Bernard Poulet, Areva
Richard Stattel, USNRC
Richard Tate, UKNII
Nguyen Thuy, EDF
Dan Welbourne, Nuclear Electric (retired)
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Update of the Electrical Guide
• Expand scope from emergency power systems to all
electrical systems
• In other areas guidance needs to be adjusted from safety to
important to safety, e.g.,
• Cable and raceway systems
• EMI protection
• Sizing and rating
• More guidance on protection coordination
• Deal with non-safety emergency power
• Incorporate lessons learned on grid interaction
• Coordinate with NEA studies of Forsmark & Olkiluoto
lessons learned
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Electrical Team (so far)
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Lars Fredland, Vattenfall
Ivan-Antonio Giannelli, ENEL
Bernard Givaudan, EDF
Magnus Knutsson, Vattenfall
Tom Koshy, USNRC
Singh Mataru, USNRC
Roy Matthew,USNRC
Oon-Pyo Zhu, KINS
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Common needs for both guides
• Align with:
• New requirements document
• New guide on safety classification (?)
• Requirements and guides for management
systems
• Improve format and clarity
• Avoid conflicts with:
• Member State practices
• IEEE and IEC standards
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Plan
We are here
Iteration 2
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Hopes
• Draft of Electrical Guide for wide circulation
early this summer
• Draft of I&C Guide for wide circulation late
fall
• If you want to be included in the big review,
send me an email
• At the moment I have considerably more I&C
reviewers than electrical.
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Research Reactor I&C Guide
• Principles common with NPP I&C guide, but:
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Lesser hazard
Short cycle
More benign plant environment
Experimental facilities
Users may be professors and students
Exit to NPP guide in some cases, e.g.,
• Power > a few 10’s MW
• Harsh environment
• First draft being reviewed by writing group
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Construction Guide
• Covers key processes
• Installation
• Test and checkout
• Embedded processes, e.g.,
• CM
• Equipment receipt, storage, and issue
• Interface with design life-cyle is still being
determined
• May cover fabrication OR may begin after factory door
• Third draft in progress
• Still trying to find the right level of detail
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Safety Classification Guide
• Proposed a 4 level safety classification
scheme
• Similar to functional classification of IEC 61226
except that functions for mitigation of severe
accidents are put into a lower category.
• Reduction to a 3 level scheme is under
discussion
• Under consideration for approval
• A few issues to be resolved
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Computer Security Guide
• In final sign-off and ready to be
finalized
• Deals with entire plant and
development environment
• Five level model similar to RG 5.71
• High level guidance
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We need to do more
• Guidelines for I&C characterististics to
support computer security
• Garching March 16
• Probably future TECDOC
• Overall IAEA plan to address computer
security
• Meeting of member states to discuss needs
~June
• Planning meeting for this next month
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