Nuclear facilities - Electrical equipment important to safety - Qualification (IEC/IEEE 60780-323:2016)

This International Standard describes the basic requirements for qualifying electrical
equipment important to safety and interfaces (electrical and mechanical) that are to be used
in nuclear facilities. The principles, methods, and procedures described are intended to be
used for qualifying equipment, maintaining and extending qualification, and updating
qualification, as required, if the equipment is modified. The qualification requirements in this
standard, when met, demonstrate and document the ability of equipment to perform safety
function(s) under applicable service conditions, including design basis events and certain
design extension conditions, and reduce the risk of environmentally induced common-cause
equipment failure.
This standard does not provide environmental stress levels or performance requirements.
Other aspects, relating to quality assurance, selection and use of electronic devices, design
and modification of digital systems are not part of this standard.
Other IEC or IEEE standards that present qualification programmes for specific equipment,
specific environments, or specific parts of the qualification programme may be used to
supplement this standard, as applicable. The bibliography lists other standards related to
equipment qualification.

Kerntechnische Anlagen - Elektrisches Gerät mit sicherheitstechnischer Bedeutung - Qualifizierung (IEC/IEEE 60780-323:2016)

Installations nucléaires - Equipements électriques importants pour la sûreté - Qualification (IEC/IEEE 60780-323:2016)

Jedrski objekti - Električna oprema, pomembna za varnost - Kvalifikacija (IEC/IEEE 60780-323:2016)

Ta mednarodni standard opisuje osnovne zahteve za kvalifikacijo električne opreme, ki je pomembna za varnost in vmesnike (električne in mehanske), ki se uporabljajo v jedrskih objektih. Opisana načela, metode in postopki so namenjeni za kvalifikacijo opreme, vzdrževanje in razširjanje kvalifikacij ter po potrebi posodabljanje kvalifikacij, če pride do sprememb na opremi. Zahteve za kvalifikacijo v tem standardu, če so izpolnjene, dokazujejo in dokumentirajo ustreznost opreme za izvajanje varnostnih funkcij v ustreznih pogojih izvajanja storitve, vključno z določenimi dogodki in pogoji, ki so predvideni v načrtu, ter zmanjšujejo tveganje splošnih okvar opreme, ki so posledica okoljskih vplivov.
Ta standard ne podaja ravni okoljskega vpliva ali zahtev glede zmogljivosti. Drugi vidiki v zvezi z zagotavljanjem kakovosti, izbiro in uporabo elektronske opreme, načrtovanjem ter spreminjanjem digitalnih sistemov niso del tega standarda.
Drugi standardi IEC ali IEEE, ki opisujejo programe za kvalifikacijo določene opreme, določena okolja ali določene dele programov za kvalifikacijo, se lahko uporabljajo kot dodatek k temu standardu, kot je primerno. Bibliografija navaja druge standarde, povezane s kvalifikacijo opreme.

General Information

Status
Published
Publication Date
07-Nov-2017
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
19-Oct-2017
Due Date
24-Dec-2017
Completion Date
08-Nov-2017

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SLOVENSKI STANDARD
SIST EN 60780-323:2017
01-december-2017

-HGUVNLREMHNWL(OHNWULþQDRSUHPDSRPHPEQD]DYDUQRVW.YDOLILNDFLMD ,(&,(((



Nuclear facilities - Electrical equipment important to safety - Qualification (IEC/IEEE

60780-323:2016)

Kerntechnische Anlagen - Elektrisches Gerät mit sicherheitstechnischer Bedeutung -

Qualifizierung (IEC/IEEE 60780-323:2016)
Installations nucléaires - Equipements électriques importants pour la sûreté -
Qualification (IEC/IEEE 60780-323:2016)
Ta slovenski standard je istoveten z: EN 60780-323:2017
ICS:
27.120.20 Jedrske elektrarne. Varnost Nuclear power plants. Safety
SIST EN 60780-323:2017 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 60780-323:2017
---------------------- Page: 2 ----------------------
SIST EN 60780-323:2017
EUROPEAN STANDARD EN 60780-323
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2017
ICS 27.120.20
English Version
Nuclear facilities - Electrical equipment important to safety -
Qualification
(IEC/IEEE 60780-323:2016)

Installations nucléaires - Equipements électriques Kerntechnische Anlagen - Elektrisches Gerät mit

importants pour la sûreté - Qualification sicherheitstechnischer Bedeutung - Qualifizierung

(IEC/IEEE 60780-323:2016) (IEC/IEEE 60780-323:2016)

This European Standard was approved by CENELEC on 2017-09-11. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60780-323:2017 E
---------------------- Page: 3 ----------------------
SIST EN 60780-323:2017
EN 60780-323:2017
European foreword

This document (EN 60780-323:2017) consists of the text of IEC/IEEE 60780-323:2016 prepared by

SC 45A "Instrumentation, control and electrical systems of nuclear facilities" of IEC/TC 45 "Nuclear

instrumentation", in cooperation with the Nuclear Power Engineering Committee of the Power and

Energy Society of the IEEE, under the IEC/IEEE Dual Logo Agreement between IEC and IEEE.

The following dates are fixed:
• latest date by which this document has to be (dop) 2018-09-11
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards (dow) 2020-09-11
conflicting with this document have to be
withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

As stated in the nuclear safety directive 2009/71/EURATOM, Chapter 1, Article 2, item 2, Member

States are not prevented from taking more stringent safety measures in the subject-matter covered by

the Directive, in compliance with Community law. In a similar manner, this European standard does

not prevent Member States from taking more stringent nuclear safety and/or security measures in the

subject-matter covered by this standard.
Endorsement notice

The text of the International Standard IEC/IEEE 60780-323:2016 was approved by CENELEC as a

European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60068-2-6 NOTE Harmonized as EN 60068-2-6.
IEC 60068-2-11 NOTE Harmonized as EN 60068-2-11.
IEC 60068-2-14 NOTE Harmonized as EN 60068-2-14.
IEC 60068-2-27 NOTE Harmonized as EN 60068-2-27.
IEC 60068-2-30 NOTE Harmonized as EN 60068-2-30.
IEC 60068-2-57 NOTE Harmonized as EN 60068-2-57.
IEC 60068-3-3 NOTE Harmonized as EN 60068-3-3.
IEC 60216-1 NOTE Harmonized as EN 60216-1.
IEC 60216-2 NOTE Harmonized as EN 60216-2.
IEC 60529 NOTE Harmonized as EN 60529.
IEC 60544-2 NOTE Harmonized as EN 60544-2.
IEC 60811-412 NOTE Harmonized as EN 60811-412.
IEC 61000-4 Series NOTE Harmonized as EN 61000-4 Series.
---------------------- Page: 4 ----------------------
SIST EN 60780-323:2017
EN 60780-323:2017
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60980 - Recommended practices for seismic - -
qualification of electrical equipment of the
safety system for nuclear generating
stations
IEEE Std 344 2013 IEEE Standard for Seismic Qualification of - -
Equipment for Nuclear Power Generating
Stations
---------------------- Page: 5 ----------------------
SIST EN 60780-323:2017
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SIST EN 60780-323:2017
IEC/IEEE 60780-323
Edition 1.0 2016-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Nuclear facilities – Electrical equipment important to safety – Qualification
Installations nucléaires – Equipements électriques importants pour la sûreté –
Qualification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-3168-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 60780-323:2017
– 2 – IEC/IEEE 60780-323:2016
© IEC/IEEE 2016
CONTENTS

FOREWORD ......................................................................................................................... 4

INTRODUCTION ................................................................................................................... 6

1 Scope and object ........................................................................................................... 8

2 Normative references ................................................................................................... 8

3 Terms and definitions .................................................................................................... 8

4 Symbols and abbreviations .......................................................................................... 12

5 Principles of equipment qualification ............................................................................ 12

5.1 Qualification objective ......................................................................................... 12

5.2 Qualified life and qualified condition .................................................................... 13

5.3 Qualification elements ......................................................................................... 13

5.4 Qualification documentation ................................................................................ 13

6 Qualification methods .................................................................................................. 14

6.1 Initial qualification ............................................................................................... 14

6.1.1 Type testing ............................................................................................... 14

6.1.2 Operating experience ................................................................................ 14

6.1.3 Analysis ...................................................................................................... 14

6.1.4 Combined methods ..................................................................................... 14

6.2 Reassessing qualified life .................................................................................... 14

6.2.1 General ....................................................................................................... 14

6.2.2 Method 1: Using conservatism ...................................................................... 15

6.2.3 Method 2: Type test on aged samples from the plant .................................... 15

6.2.4 Method 3: Performing type test for longer qualified life .................................. 15

6.2.5 Method 4: Component replacement .............................................................. 15

6.3 Condition monitoring ........................................................................................... 15

7 Qualification program ................................................................................................. 16

7.1 General ............................................................................................................... 16

7.2 Equipment specification....................................................................................... 16

7.2.1 General ....................................................................................................... 16

7.2.2 Equipment identification ............................................................................... 16

7.2.3 Interfaces .................................................................................................... 16

7.2.4 Qualified life objective .................................................................................. 17

7.2.5 Safety function(s) ......................................................................................... 17

7.2.6 Service conditions ........................................................................................ 17

7.3 Qualification programme plan .............................................................................. 18

7.3.1 General ....................................................................................................... 18

7.3.2 Ageing ......................................................................................................... 18

7.3.3 Significant ageing mechanisms .................................................................... 18

7.3.4 Qualified life objective .................................................................................. 19

7.3.5 Service condition margin .............................................................................. 19

7.3.6 Maintenance ............................................................................................... 19

7.3.7 Acceptance criteria ..................................................................................... 19

7.4 Qualification programme implementation ............................................................. 19

7.4.1 Type testing ................................................................................................ 19

7.4.2 Operating experience ................................................................................. 25

7.4.3 Qualification with analysis ............................................................................ 26

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SIST EN 60780-323:2017
IEC/IEEE 60780-323:2016 – 3 –
© IEC/IEEE 2016

7.4.4 Modifications................................................................................................ 27

8 Documentation ........................................................................................................... 27

8.1 General ............................................................................................................... 27

8.2 General documentation requirements .................................................................. 27

8.3 Specific documentation requirements for mild environment .................................. 28

8.4 Specific documentation requirements for harsh environment ............................ 28

Bibliography ....................................................................................................................... 29

Table 1 – Minimal test margins recommended for DBEs ....................................................... 21

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SIST EN 60780-323:2017
– 4 – IEC/IEEE 60780-323:2016
© IEC/IEEE 2016
NUCLEAR FACILITIES – ELECTRICAL EQUIPMENT
IMPORTANT TO SAFETY – QUALIFICATION
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation.

IEEE Standards documents are developed within IEEE Societies and Standards Coordinating Committees of the

IEEE Standards Association (IEEE-SA) Standards Board. IEEE develops its standards through a consensus

development process, approved by the American National Standards Institute, which brings together volunteers

representing varied viewpoints and interests to achieve the final product. Volunteers are not necessarily

members of IEEE and serve without compensation. While IEEE administers the process and establishes rules

to promote fairness in the consensus development process, IEEE does not independently evaluate, test, or

verify the accuracy of any of the information contained in its standards. Use of IEEE Standards documents is

wholly voluntary. IEEE documents are made available for use subject to important notices and legal disclaimers

(see http://standards.ieee.org/IPR/disclaimers.html for more information).

IEC collaborates closely with IEEE in accordance with conditions determined by agreement between the two

organizations. This Dual Logo International Standard was jointly developed by the IEC and IEEE under the

terms of that agreement.

2) The formal decisions of IEC on technical matters express, as nearly as possible, an international consensus of

opinion on the relevant subjects since each technical committee has representation from all interested IEC

National Committees. The formal decisions of IEEE on technical matters, once consensus within IEEE Societies

and Standards Coordinating Committees has been reached, is determined by a balanced ballot of materially

interested parties who indicate interest in reviewing the proposed standard. Final approval of the IEEE

standards document is given by the IEEE Standards Association (IEEE-SA) Standards Board.

3) IEC/IEEE Publications have the form of recommendations for international use and are accepted by IEC

National Committees/IEEE Societies in that sense. While all reasonable efforts are made to ensure that the

technical content of IEC/IEEE Publications is accurate, IEC or IEEE cannot be held responsible for the way in

which they are used or for any misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

(including IEC/IEEE Publications) transparently to the maximum extent possible in their national and regional

publications. Any divergence between any IEC/IEEE Publication and the corresponding national or regional

publication shall be clearly indicated in the latter.

5) IEC and IEEE do not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC and IEEE are not responsible

for any services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or IEEE or their directors, employees, servants or agents including individual

experts and members of technical committees and IEC National Committees, or volunteers of IEEE Societies

and the Standards Coordinating Committees of the IEEE Standards Association (IEEE-SA) Standards Board,

for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect,

or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this

IEC/IEEE Publication or any other IEC or IEEE Publications.

8) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that implementation of this IEC/IEEE Publication may require use of

material covered by patent rights. By publication of this standard, no position is taken with respect to the

existence or validity of any patent rights in connection therewith. IEC or IEEE shall not be held responsible for

identifying Essential Patent Claims for which a license may be required, for conducting inquiries into the legal

validity or scope of Patent Claims or determining whether any licensing terms or conditions provided in

connection with submission of a Letter of Assurance, if any, or in any licensing agreements are reasonable or

non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent

rights, and the risk of infringement of such rights, is entirely their own responsibility.

International Standard IEC/IEEE 60780-323 has been prepared by subcommittee 45A:

Instrumentation, control and electrical systems of nuclear facilities, of IEC technical

committee 45: Nuclear instrumentation, in cooperation with the Nuclear Power Engineering

Committee of the Power & Energy Society of the IEEE, under the IEC/IEEE Dual Logo

Agreement between IEC and IEEE.
---------------------- Page: 10 ----------------------
SIST EN 60780-323:2017
IEC/IEEE 60780-323:2016 – 5 –
© IEC/IEEE 2016
This publication is published as an IEC/IEEE Dual Logo standard.
NOTE A list of IEEE participants can be found at the following URL:

http://standards.ieee.org/downloads/60780/60780-323-2016/60780-323-2016_wg-participants.pdf

This new edition cancels and replaces the first edition of IEC 60780, published in 1998. It

constitutes a technical revision. It also supersedes IEEE Std 323-2003.
The main technical changes with regard to IEC 60780:1998 are as follows:
• to harmonize in a unique standard qualification practices formerly given by
IEC 60780:1998 and IEEE Std 323-2003 on initial qualification,

• to take into account the need to reassess and extend the qualified life of electrical

equipment regarding projects to extend the operating life of nuclear facilities.

This revision incorporates current practices and lessons learned from the implementation of

previous versions of this standard by the nuclear industry.
Several issues are clarified or changed in this revision:

• This standard defines the methods for equipment qualification when it is desired to qualify

equipment for the applications in the environments to which it may be exposed. This

standard is generally utilized for qualification of all electrical equipment important to safety

in accordance with IAEA terminology. The documentation and test requirements are,

however, more rigorous for equipment located in a harsh environment.

• The test margins have been updated to better identify the parameters that achieve test

margin on design basis event profiles.

• An important concept in equipment qualification is the recognition that significant

degradation could be caused by ageing mechanisms occurring from the environments

during the service life, and therefore equipment important to safety should be brought to

the end of qualified life (operating ageing) prior to imposing design basis event

simulations. Previous versions recognised that the period of time for which acceptable

performance was demonstrated is the qualified life. The qualified life does not include the

time during or after the accident conditions for which qualification is demonstrated

(mission time). The concept of qualified life continues in this revision. This revision also

recognises that the condition of the equipment for which acceptable performance was

demonstrated is the qualified condition. Thus, new license renewal and life extension

options are available by ensuring that qualified equipment continues to remain in a

qualified condition.
The text of this standard is based on the following IEC documents:
FDIS Report on voting
45A/1058/FDIS 45A/1075/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

International standards are drafted in accordance with the rules given in the ISO/IEC

Directives, Part 2.

The IEC Technical Committee and IEEE Technical Committee have decided that the contents

of this publication will remain unchanged until the stability date indicated on the IEC website

under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN 60780-323:2017
– 6 – IEC/IEEE 60780-323:2016
© IEC/IEEE 2016
INTRODUCTION
a) Technical background, main issues and organisation of the Standard

This standard is applicable to electrical equipment important to safety and its interfaces

that are necessary to perform a safety function, or whose failure could adversely affect the

safety functions of other equipment.

Electrical equipment in nuclear facilities shall meet its safety functional requirements

throughout its installed life. This is accomplished by a thorough programme of quality

assurance, design control, quality control, qualification, production, transportation,

storage, installation, maintenance, periodic testing, and surveillance. This IEC/IEEE

standard specifically focuses on qualification.

Other aspects, relating to quality assurance, reliability, selection and use of electronic

devices, design and modification of digital systems including V&V activities are not part of

this standard.

Industry research in the area of equipment qualification and decades of its application

have greatly benefited this standard. Future activities of the working group to update this

standard will consider the following:
– Experience and knowledge gained by using condition monitoring techniques,
– Knowledge gained on ageing mechanisms and kinetics,

– Significance of refinements in ageing mechanisms, equipment sealing, interfaces,

extrapolation, similarity, test sequence and parameters (such as ramp rates, time

duration, timing of spray initiation and its duration), and qualification documentation.

It is intended that the Standard be used by operators of NPPs (utilities), systems

evaluators, equipment manufacturers, test facilities, qualification laboratories and by

licensors.

b) Situation of the current standard in the structure of the IEC SC 45A standard series

IEC 61513 is a first level IEC SC 45A document and gives guidance applicable to I&C at

system level.

These documents are supplemented by guidance on functional classification (IEC 61226),

hardware design (IEC 60987), software (IEC 60880 and IEC 62138), selection and use of

HDL programmed integrated circuit (IEC 62566) and requirements in order to reduce the

possibility and limit the impact of common cause failure of category A functions
(IEC 62340).
IEC/IEEE 60780-323 is a second level IEC SC 45A document which focuses on
environmental qualification of electrical equipment important to safety.

For more details on the structure of the IEC SC 45A standard series, see item d) of this

introduction.
c) Recommendations and limitations regarding the application of this standard

This dual logo standard applies to all electrical equipment important to safety in

accordance with IAEA terminology including Class 1E equipment in accordance with the

IEEE classification scheme and Classes 1, 2 and 3 in accordance with IEC 61226
classification scheme.

For equipment that needs to be qualified for design extension conditions, including severe

accident conditions, this international standard shall be applied after a new DBE profile

covering these conditions has been fully defined. Conservatism taken into account to

define this severe accident profile should nevertheless be adapted.

To ensure that the Standard will continue to be relevant in future years, the emphasis has

been placed on issues of principle, rather than specific technologies.

d) Description of the structure of the IEC SC 45A standard series and relationships

with other IEC documents and other bodies documents (IAEA, ISO)

The top-level document of the IEC SC 45A standard series is IEC 61513. It provides

general requirements for I&C systems and equipment that are used to perform functions

important to safety in NPPs. IEC 61513 structures the IEC SC 45A standard series.

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SIST EN 60780-323:2017
IEC/IEEE 60780-323:2016 – 7 –
© IEC/IEEE 2016

IEC 61513 refers directly to other IEC SC 45A standards for general topics related to

categorisation of functions and classification of systems, qualification, separation of

systems, defence against common cause failure, software aspects of computer-based

systems, hardware aspects of computer-based systems, and control room design. The

standards referenced directly at this second level should be considered together with

IEC 61513 as a consistent document set.

At a third level, IEC SC 45A standards not directly referenced by IEC 61513 are standards

related to specific equipment, technical methods, or specific activities. Usually these

documents, which make reference to second-level documents for general topics, can be

used on their own.

A fourth level extending the IEC SC 45A standard series, corresponds to the Technical

Reports which are not normative.

IEC 61513 has adopted a presentation format similar to the basic safety publication

IEC 61508 with an overall safety life-cycle framework and a system life-cycle framework.

Regarding nuclear safety, it provides the interpretation of the general requirements of

IEC 61508-1, IEC 61508-2 and IEC 61508-4, for the nuclear application sector, regarding

nuclear safety. In this framework IEC 60880 and IEC 62138 correspond to IEC 61508-3 for

the nuclear application sector. IEC 61513 refers to ISO as well as to IAEA GS-R-3 and

IAEA GS-G-3.1 and IAEA GS-G-3.5 for topics related to quality assurance (QA).

The IEC SC 45A standards series consistently implements and details the principles and

basic safety aspects provided in the IAEA code on the safety of NPPs and in the IAEA

safety series, in particular the Requirements SSR-2/1, establishing safety requirements

related to the design of Nuclear Power Plants, and the Safety Guide SSG-39 dealing with

instrumentation and control systems important to safety in Nuclear Power Plants. The

terminology and definitions used by SC 45A standards are consistent with those used by

the IAEA.
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SIST EN 60780-323:2017
– 8 – IEC/IEEE 60780-323:2016
© IEC/IEEE 2016
NUCLEAR FACILITIES – ELECTRICAL EQUIPMENT
IMPORTANT TO SAFETY – QUALIFICATION
1 Scope and object

This International Standard describes the basic requirements for qualifying electrical

equipment important to safety and interfaces (
...

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