IEC TR 63123:2017

Nuclear power plants - Instrumentation, control and electrical power systems - Guidance for the application of IEC 63147:2017/IEEE Std 497™ -2016 in the IAEA / IEC framework

IEC TR 63123:2017(E) gives guidance for the application in the IAEA / IEC framework of IEC 63147:2017/IEEE 497 corresponding to the adoption without modification of IEEE 497:2016.

General Information

• Status: Published
• Publication Date: 13-Dec-2017
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.120.20 - Nuclear power plants. Safety
• Technical Committee: SC 45A - Instrumentation, control and electrical power systems of nuclear facilities
• Current Stage: PPUB - Publication issued
• Start Date: 14-Nov-2017
• Completion Date: 14-Dec-2017

Standards Content (Sample)

IEC TR 63123 ®
Edition 1.0 2017-12
TECHNICAL
REPORT
Nuclear power plants – Instrumentation, control and electrical power systems –
Guidance for the application of IEC 63147:2017/IEEE Std 497™-2016 in the
IAEA / IEC framework
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IEC TR 63123 ®
Edition 1.0 2017-12
TECHNICAL
REPORT
Nuclear power plants – Instrumentation, control and electrical power systems –

Guidance for the application of IEC 63147:2017/IEEE Std 497™-2016 in the

IAEA / IEC framework
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.120.20 ISBN 978-2-8322-4925-3

– 2 – IEC TR 63123:2017 © IEC 2017
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Application of IEC 63147:2017/IEEE 497 in the IEC/IAEA framework . 10
5 Future work in IEC SC 45A . 12
5.1 Recommendation of the expert review team . 12
5.2 IEC 61226 revision. 12
5.3 IEC 61513 revision. 13
5.4 IEC/IEEE 60780-323 revision . 13
Bibliography . 14

Table 1 – Possible mappings of the variable type to the functions given in the draft of
edition 4 of IEC 61226 (45A/1096/CD) . 10

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS – INSTRUMENTATION, CONTROL AND
ELECTRICAL POWER SYSTEMS – GUIDANCE FOR THE APPLICATION OF
IEC 63147:2017/IEEE Std 497™-2016 IN THE IAEA / IEC FRAMEWORK

FOREWORD
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The main task of IEC technical committees is to prepare International Standards. However, a
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data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC TR 63123, which is a technical report, has been prepared by subcommittee 45A:
Instrumentation, control and electrical power systems of nuclear facilities, of IEC technical
committee 45: Nuclear instrumentation.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
45A/1151/DTR 45A/1162A/RVDTR
Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.

– 4 – IEC TR 63123:2017 © IEC 2017
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

INTRODUCTION
a) Technical background, main issues and organisation of the document
October 2010, during the Seattle meeting WG A9 experts proposed the circulation of a NWIP
to develop an IEC standard to coincide with IEEE 497 published in 2010, “IEEE Standard
Criteria for accident Monitoring Instrumentation for Nuclear Power Generating Stations”, see
45A/828/RM.
July 2011, IEEE/NPEC informed IEC SC 45A of its decision to revise IEEE 497 in 2012 to
take into account the recommendations made after the accident of Fukushima. IEEE/NPEC
proposed this revision be made in cooperation with IEC SC 45A with the objective to publish
an IEC/IEEE standard. The new IEEE 497 was to be prepared to have significant new
technical content that reflects Fukushima lessons learned.
September 2011 SC 45A P-members were invited to review IEEE 497 published in 2010, see
45A/852/DC. The goal of this review was to identify the necessary changes to introduce in this
IEEE standard during its revision to produce an IEC/IEEE standard, see 45A/864/INF.
February 2012, during the Karlsruhe IEC/IEEE projects meeting IEEE/NPEC/SC6 Champion
presented information concerning the IEEE 497 and its foreseen revision. Following the
debate held after the presentation it was confirmed that a restricted team of 4 IEC experts
was to be set up by WG A9 for 3 or 4 e-meetings be held with 3 or 4 experts of IEEE to
investigate on the possibility to launch a common revision.
April 2012, the IAEA initiated work on a Nuclear Energy Series document describing the
rationale behind nuclear power plant accident monitoring systems and outlining the criteria for
designated accident monitoring which is the subject of IEEE 497.
Fall 2012, the final report result of the IEC/IEEE expert team activities was sent to IEC
SC 45A Secretariat. IEC SC 45A Secretary deeming that there was no sufficient elements to
be reported to National Committees to ask them to approve or not the launching of the
common revision of IEEE 497, decided to postpone the updating of 45A/864/INF.
2012-2013 the discussions continued between IEC and IEEE experts to try to solve the
difficulties faced.
2013, during and after the Moscow meeting, IEEE NPEC and IEC SC 45A representatives
discussed on how best to move forward. IEC SC 45A Chairman and Secretary proposed the
IEEE NPEC develops its revision on its own sending the IEC SC 45A Secretariat the project
drafts. It was proposed IEC SC 45A has those draft circulated to National Committee as DC,
and the comments formulated by National Committees be circulated as INF letter, with the
view to have a revised IEEE 497 which could be proposed to IEC for endorsement as dual
logo standard in the frame of the agreement AC/138/2002.
Fall 2014, a first full draft of IEEE 497 was available for IEC consideration.
nd rd
During the IEC IEEE joint projects meeting held the 2 and 3 of October 2014 in Las
Vegas, the experts attending the IEC/IEEE joint projects meeting recommended, IEC SC 45A
prepared for mid December 2014 an updated version of 45A/864/INF in order to inform IEC
NCs of the effort done by IEEE/NPEC/SC6 during this revision of IEEE 497 and on the way
the issues identified in 45A/864/INF were addressed.
Beginning 2015, IEC SC 45A prepared and circulated the updated version 45A/864A/INF. The
objective of 45A/864A/INF was that the IEC NCs have the maximum of valid information if the
IEEE decided upon completion of the revision of IEEE 497 to submit it to IEC for endorsement
as dual logo standard in the frame of the agreement AC/138/2002.

– 6 – IEC TR 63123:2017 © IEC 2017
March 2016 during the Gyeongju meetings, IEC SC 45A Secretary indicated that the setup of
an IEC expert team will be necessary to analyze the revision of IEEE 497 if the IEEE decides
to submit it. IEC SC 45A Secretary reminded also that all the IEC SC 45A experts were invited
to volunteer to participate with them to the analysis if necessary, see
45A(Gyeongju/Secretariat)12.
End August 2016, IEC received the proposal of IEEE to endorse the IEEE 497 published in
2016 as dual logo standard in the frame of the agreement AC/138/2002.
September 2016, 45A/1108/DC circulated to fulfil the commitment taken in March 2016 in
Gyeongju to set up a team of experts to review the revised IEEE 497 and to draft a
recommendat
...