1. Criteria for IEC Standards Gary Johnson Chairman SC45A kg6un@mac.com

2. IEC Standards must be useable in all SC45A Member States Argentina Belgium Canada China Czech Republic Egypt Finland France Italy Japan Korea Netherlands Norway Pakistan Romania Russia South Africa Spain Sweden Ukraine UK US

3. To make standards useful in all of these states standards must: Be technically acceptable to the Member States Be NPP technology neutral – Or explicitly restricted to specific type of plant or plants Fit the regulatory environment of all Member States Use normative references that are accepted by all Member States Use terminology that has been accepted by Member States and that is consistently applied across the set of standards. Technical issues Framework Issues

4. IEC standards must be technically acceptable to the Member States Technical agreement is reached through the working groups. Technical agreement is formally endorsed by the vote of National Committees

5. IEC standards should be plant technology neutral* PWR – Framatome PWR – CPR-1000 – CNP-600 – EPR – VVER-1000 – VVER-440 – Westinghouse PWR – Mitsubishi PWR – CNP-300 – CE PWR – OPR-1000 – APR-1400 – AP-1000 – Siemens PWR – KWU-PWR – B&W PWR BWR – GE BWR – Toshiba BWR – Hitachi BWR – ABWR – Asea-Atom BWR – KWU BWR LMR – BN-600 Gas reactor – AGR PHWR CANDU Siemens PHWR *or explicitly state the plant technologies to which they apply I&C Technology – “Analog” – Computer-Based – FPGA Based Much variation within these categories

6. Achieving technology neutral standards Working groups typically include members who are familiar with most of these designs Formal review by National Committees is expected to consider how the standards apply to the designs used in their country Scope of a standard may be limited to one or a few technologies

7. IEC standards must fit the regulatory environment of all member states There are many different regulatory environments, for example: – US Specific regulations and extensive guidance – UK General regulations and high level review guidance – France General regulations and TSO technical review – Russia Specific regulations but no published review guidance – Ukraine Regulations based upon Russian model, I&C requirements based upon IAEA NS-G-1.3 We need a reference set of regulatory principles, but 1) the principles of a single Regulator won’t work and 2) it is impossible to merge the requirements of all regulators

8. Only IAEA requirements documents been endorsed by all member states For NPP I&C the most significant IAEA requirements are – SSR 2/1, Safety of Nuclear Power Plants: Design – NS-R-3, Safety of Nuclear Power Plants: Operation – GS-R-3, The Management System for Facilities and Operations Management systems include the definition and implementation of quality assurance activities NS-G-1.3 plays the role of IEEE 603 – Different scopes (important to safety vs safety)

9. Achieving consistency between IAEA and Member State regulatory environment Ensuring consistency with Member State practices is the job of three review groups – Nuclear Safety Standards Committee (NUSSC) http://www-ns.iaea.org/committees/default.asp?s=5&l=37 – Committee on Safety Standards (CSS) Same as above – IAEA Board of Governors http://www.iaea.org/About/Policy/Board/ WENRA Safety Reference Levels are based upon the IAEA Safety Requirements. – WENRA is cited in the European Directive on Nuclear Safety and Waste http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2009:172:0018:0022:EN:PDF

10. IEC standards use normative references that are accepted by all Member States Three sets of standard document are accepted by all member states – IEC – ISO – IAEA

11. IEC standards use terminology that is commonly understood by all Member States IAEA, IEC, and ISO have terminology that has been accepted by all member states – IAEA Safety Glossary http://www-pub.iaea.org/MTCD/publications/PDF/Pub1290_web.pdf – SC45A Safety Glossary http://std.iec.ch/terms/terms.nsf/ByTC?OpenView&Count=-1&RestrictToCategory=45A – IEC International Electrotechncal Vocabulary http://www.electropedia.org/IEC Glossary of Terms – ISO Concept Database http://www.iso.org/obp/ui/

12. Achieving a consistent use of terminology SC45A takes the IAEA Safety Glossary as the authority for nuclear safety terms – In exceptional cases SC45A may adapt the IAEA definition, and recommend changes to IAEA Existing definitions in the SC45A glossary are used to ensure consistency SC45A takes the IEV and the ISO concept database as sources of terminology that are not nuclear I&C specific – Avoid new definitions where possible Draft standards are reviewed against this policy.