Nuclear facilities - Instrumentation, control and electrical power systems important to safety - Structure of the IEC SC 45A standards series

IEC TR 63400:2021 is intended to augment that description to enable users of individual IEC SC 45A standards to obtain a more comprehensive understanding of the overall structure of the series and its relationship with other standards bodies and standards. This document outlines the scope of the IEC SC 45A standards series and describes the basic structure of the IEC SC 45A standards series, with particular reference to a hierarchy of levels and subdivision into a set of broad topic areas. it presents the structure of the IEC SC 45A standards series in diagrammatic form.

General Information

Status
Published
Publication Date
17-Nov-2021
Current Stage
PPUB - Publication issued
Completion Date
18-Nov-2021
Ref Project

Buy Standard

Technical report
IEC TR 63400:2021 - Nuclear facilities - Instrumentation, control and electrical power systems important to safety - Structure of the IEC SC 45A standards series
English language
63 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

IEC TR 63400
Edition 1.0 2021-11
TECHNICAL
REPORT
colour
inside
Nuclear facilities – Instrumentation, control and electrical power systems
important to safety – Structure of the IEC SC 45A standards series
IEC TR 63400:2021-11(en)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2021 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC

copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC

The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes

International Standards for all electrical, electronic and related technologies.
About IEC publications

The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch

The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the

variety of criteria (reference number, text, technical publications previews. With a subscription you will always

committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.

and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
---------------------- Page: 2 ----------------------
IEC TR 63400
Edition 1.0 2021-11
TECHNICAL
REPORT
colour
inside
Nuclear facilities – Instrumentation, control and electrical power systems
important to safety – Structure of the IEC SC 45A standards series
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.120.20 ISBN 978-2-8322-1050-7

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

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC TR 63400:2021 © IEC 2021
CONTENTS

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

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

1 Scope .............................................................................................................................. 8

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

3 Terms and definitions .................................................................................................... 10

4 Abbreviated terms ......................................................................................................... 12

5 IEC SC 45A scope ......................................................................................................... 13

5.1 Technical scope .................................................................................................... 13

5.2 Relationship with other standards bodies .............................................................. 14

5.2.1 General ......................................................................................................... 14

5.2.2 Internal IEC liaisons ...................................................................................... 14

5.2.3 Liaison with IAEA........................................................................................... 14

5.2.4 Liaison with IEEE NPEC ................................................................................ 14

5.3 Criteria for development of SC 45A standards ....................................................... 15

5.4 IEC SC 45A terminology policy ............................................................................. 15

6 The IEC SC 45A standards structure ............................................................................. 15

6.1 Details of the basic structure ................................................................................. 15

6.2 Technical coverage ............................................................................................... 16

6.3 Hierarchy of levels ................................................................................................ 16

6.3.1 General ......................................................................................................... 16

6.3.2 Level 1 .......................................................................................................... 17

6.3.3 Level 2 .......................................................................................................... 17

6.3.4 Level 3 .......................................................................................................... 17

6.3.5 Level 4 .......................................................................................................... 17

6.4 Broad topic areas .................................................................................................. 17

6.4.1 General ......................................................................................................... 17

6.4.2 I&C architecture and specifics of I&C [topic 01] ............................................. 18

6.4.3 Electrical power system architecture and specifics of electrics [topic 02] ....... 18

6.4.4 Safety fundamentals [topic 11] ....................................................................... 18

6.4.5 Equipment qualification and system performance [topic 12] ........................... 19

6.4.6 Human factors engineering (HFE) [topic 13] .................................................. 19

6.4.7 Cyber security [topic 14] ................................................................................ 19

6.4.8 Ageing management [topic 15] ....................................................................... 19

6.4.9 Control rooms and human machine interfaces (HMI) [topic 21] ...................... 20

6.4.10 Sensors and measurement techniques [topic 22] ........................................... 20

6.4.11 Special process measurement [topic 23] ........................................................ 20

6.4.12 Radiation monitoring [topic 24] ...................................................................... 20

6.4.13 Plant wide I&C and electrical equipment [topic 25] ......................................... 20

6.5 Entry point documents .......................................................................................... 20

6.6 Presentation of the structure in the TR .................................................................. 21

7 Overview of the IEC SC 45A hierarchy .......................................................................... 21

8 Standards corresponding to SC 45A scope .................................................................... 22

8.1 Standards related to the SC 45A full scope ........................................................... 22

8.2 Non-SC 45A documents of particular relevance to SC 45A scope ......................... 22

8.3 Standards related to SC 45A specific topics .......................................................... 23

---------------------- Page: 4 ----------------------
IEC TR 63400:2021 © IEC 2021 – 3 –

Annex A (informative) List of SC 45A and selected SC 45B standards ................................ 24

A.1 General ................................................................................................................. 24

A.2 Document list ........................................................................................................ 24

Annex B (informative) Other documents of particular relevance to the SC 45A

standards ...................................................................................................................... 34

B.1 General ................................................................................................................. 34

B.2 IAEA documents ................................................................................................... 34

B.2.1 All nuclear facilities ........................................................................................ 34

B.2.2 Nuclear Power Plants (NPPs) ........................................................................ 35

B.2.3 Fuel Cycle Facilities (FCFs) ........................................................................... 35

B.2.4 Research Reactors (RRs) .............................................................................. 36

B.3 Other standards bodies documents ....................................................................... 36

B.3.1 Non-SC 45A IEC documents .......................................................................... 36

B.3.2 ISO documents .............................................................................................. 37

B.3.3 ISO/IEC documents ....................................................................................... 37

B.3.4 IEEE documents ............................................................................................ 37

B.3.5 Other documents ........................................................................................... 37

Annex C (informative) List of SC 45A and selected SC 45B standards by topic area ............ 38

C.1 General ................................................................................................................. 38

C.2 Document lists for each topic area ........................................................................ 38

C.2.1 Topic 01 – I&C architecture and specifics of I&C ........................................... 38

C.2.2 Topic 02 – electrical power system architecture and specifics of

electrics ......................................................................................................... 41

C.2.3 Topic 11 – safety fundamentals ..................................................................... 43

C.2.4 Topic 12 – equipment qualification and system performance.......................... 46

C.2.5 Topic 13 – human factors engineering (HFE) ................................................. 47

C.2.6 Topic 14 – cyber security ............................................................................... 48

C.2.7 Topic 15 – ageing management ..................................................................... 50

C.2.8 Topic 21 – control rooms and human machine interfaces (HMI) ..................... 52

C.2.9 Topic 22 – sensors and measurement techniques .......................................... 53

C.2.10 Topic 23 – special process measurement ...................................................... 55

C.2.11 Topic 24 – radiation monitoring ...................................................................... 57

C.2.12 Topic 25 – plant wide I&C and electrical equipment ....................................... 61

Figure 1 – Structure of the IEC SC 45A standards series ...................................................... 22

---------------------- Page: 5 ----------------------
– 4 – IEC TR 63400:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR FACILITIES – INSTRUMENTATION, CONTROL AND
ELECTRICAL POWER SYSTEMS IMPORTANT TO SAFETY –
STRUCTURE OF THE IEC SC 45A STANDARDS SERIES
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. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements 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.

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

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC 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

transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is 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 its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees 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 Publication or any other IEC

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 some of the elements of this IEC Publication may be the subject of patent

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

IEC TR 63400 has been prepared by subcommittee 45A: Instrumentation, control and electrical

power systems of nuclear facilities, of IEC technical committee 45: Nuclear instrumentation. It

is a Technical Report.
The text of this Technical Report is based on the following documents:
Draft Report on voting
45A/1395/DTR 45A/1406/RVDTR

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this Technical Report is English.

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications.
---------------------- Page: 6 ----------------------
IEC TR 63400:2021 © IEC 2021 – 5 –

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under 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.

IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it

contains colours which are considered to be useful for the correct understanding of its

contents. Users should therefore print this document using a colour printer.
---------------------- Page: 7 ----------------------
– 6 – IEC TR 63400:2021 © IEC 2021
INTRODUCTION
a) Technical background, main issues and organisation of the Technical Report
The IEC SC 45A series of standards include the same common description in their

Introduction, item d), outlining the overall structure of the series and its relationship with

other standards bodies and standards (e.g. specific IAEA safety guides and IEC 61508).

The structure of the IEC SC 45A series at the time of drafting this Technical Report could

be described as a “pyramid” extending down from two top-level documents (at level 1) to

other documents (at levels 2, 3 and 4).

With the gradual extension of the IEC SC 45A scope to address electrical power systems,

cyber security and human factors engineering, and ongoing development of new standards,

it had become apparent that the common description could no longer, on its own, adequately

fulfil this objective without becoming overly extensive.

This Technical Report is therefore intended to augment the common description that is

included in the Introduction, item d), of all IEC SC 45A standards and technical reports

(including this Technical Report).

It was agreed at the IEC SC 45A meeting held in Paris in April 2019 that this Technical

Report should be primarily for the benefit of the users of the IEC SC 45A standards

(including first time users) rather than for the expert members of IEC SC 45A and its working

groups.

A revision of this Technical Report should be considered after each SC 45A meeting and, if

judged necessary, a revision then undertaken subject to the availability of the appropriate

resources.

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

series
The technical report IEC TR 63400 is a fourth level IEC SC 45A document.

Item d) of this introduction describes the structure of the IEC SC 45A standard series in

general terms.

This Technical Report augments that description to enable users of individual IEC SC 45A

standards to obtain a more comprehensive understanding of the overall structure of the

series and its relationship with other standards bodies and standards. The publication of

subsequent editions of this Technical Report should also enable minor changes in the

structure to be described without the need for amending the common description that is

included in the Introduction, item d), of all IEC SC 45A documents.

c) Recommendations and limitations regarding the application of the Technical Report

It is important to note that a Technical Report is entirely informative in nature. It gathers

data collected from different origins and it establishes no requirements.

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 IEC SC 45A standard series comprises a hierarchy of four levels. The top-level

documents of the IEC SC45A standard series are IEC 61513 and IEC 63046.

IEC 61513 provides general requirements for instrumentation and control (I&C) systems and

equipment that are used to perform functions important to safety in nuclear power plants

(NPPs). IEC 63046 provides general requirements for electrical power systems of NPPs; it

covers power supply systems including the supply systems of the I&C systems.

IEC 61513 and IEC 63046 are to be considered in conjunction and at the same level.

IEC 61513 and IEC 63046 structure the IEC SC 45A standard series and shape a complete

framework establishing general requirements for instrumentation, control and electrical

power systems for nuclear power plants.
IEC 61513 and IEC 63046 refer directly to other IEC SC 45A standards for general

requirements for specific topics, such as categorization of functions and classification of

systems, qualification, separation, defence against common cause failure, control room

design, electromagnetic compatibility, human factors engineering, cybersecurity, software

and hardware aspects for programmable digital systems, coordination of safety and security

---------------------- Page: 8 ----------------------
IEC TR 63400:2021 © IEC 2021 – 7 –

requirements and management of ageing. The standards referenced directly at this second

level should be considered together with IEC 61513 and IEC 63046 as a consistent
document set.

At a third level, IEC SC 45A standards not directly referenced by IEC 61513 or by IEC 63046

are standards related to specific requirements for specific equipment, technical methods, or

activities. Usually these documents, which make reference to second-level documents for

general requirements, 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.

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

security principles and basic aspects provided in the relevant IAEA safety standards and in

the relevant documents of the IAEA nuclear security series (NSS). In particular this includes

the IAEA requirements SSR-2/1, establishing safety requirements related to the design of

nuclear power plants (NPPs), the IAEA safety guide SSG-30 dealing with the safety

classification of structures, systems and components in NPPs, the IAEA safety guide SSG-

39 dealing with the design of instrumentation and control systems for NPPs, the IAEA safety

guide SSG-34 dealing with the design of electrical power systems for NPPs, the IAEA safety

guide SSG-51 dealing with human factors engineering in the design of NPPs and the

implementing guide NSS17 for computer security at nuclear facilities. The safety and

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

used by the IAEA.

IEC 61513 and IEC 63046 have adopted a presentation format similar to the basic safety

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

framework. Regarding nuclear safety, IEC 61513 and IEC 63046 provide the interpretation

of the general requirements of IEC 61508-1, IEC 61508-2 and IEC 61508-4, for the nuclear

application sector. In this framework IEC 60880, IEC 62138 and IEC 62566 correspond to

IEC 61508-3 for the nuclear application sector.

IEC 61513 and IEC 63046 refer to ISO 9001 as well as to IAEA GS-R part 2 and IAEA GS-

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

At level 2, regarding nuclear security, IEC 62645 is the entry document for the IEC/SC45A

security standards. It builds upon the valid high level principles and main concepts of the

generic security standards, in particular ISO/IEC 27001 and ISO/IEC 27002; it adapts them

and completes them to fit the nuclear context and coordinates with the IEC 62443 series. At

level 2, IEC 60964 is the entry document for the IEC/SC45A control rooms standards,

IEC 63351 (currently in preparation) is intended as the entry document for the human factors

engineering standards and IEC 62342 is the entry document for the ageing management

standards.

NOTE 1 It is assumed that for the design of I&C systems in NPPs that implement conventional safety functions

(e.g. to address worker safety, asset protection, chemical hazards, process energy hazards) international or

national standards would be applied.

NOTE 2 IEC TR 63400 (this document) provides a more comprehensive description of the overall structure of

the IEC SC 45A standards series and of its relationship with other standards bodies and standards.

---------------------- Page: 9 ----------------------
– 8 – IEC TR 63400:2021 © IEC 2021
NUCLEAR FACILITIES – INSTRUMENTATION, CONTROL AND
ELECTRICAL POWER SYSTEMS IMPORTANT TO SAFETY –
STRUCTURE OF THE IEC SC 45A STANDARDS SERIES
1 Scope

The IEC SC 45A series of standards include a general description in their Introduction, item d),

outlining the overall structure of the series and its relationship with other standards bodies and

standards (e.g. specific IAEA safety guides and IEC 61508).

This document is intended to augment that description to enable users of individual IEC SC 45A

standards to obtain a more comprehensive understanding of the overall structure of the series

and its relationship with other standards bodies and standards.
This document is organized as follows:
• Clause 5 outlines the scope of the IEC SC 45A standards series;

• Clause 6 describes the basic structure of the IEC SC 45A standards series, with particular

reference to a hierarchy of levels and subdivision into a set of broad topic areas;

• Clause 7 presents the structure of the IEC SC 45A standards series in diagrammatic form;

• Clause 8 introduces and points to three annexes that include:
a) the full set of IEC SC 45A standards in tabular form and numerical order,

b) other (i.e. non IEC SC 45A) documents of particular relevance to IEC SC 45A, and

c) the IEC SC 45A standards in tabular form for each broad topic area.

NOTE In this edition, the documents listed in the annexes and their status correspond to the situation that applied

on 1 May 2021.
2 Normative references

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.

IEC 60515, Nuclear power plants – Instrumentation important to safety – Radiation detectors –

Characteristics and test methods

IEC 60709, Nuclear power plants – Instrumentation, control and electrical power systems

important to safety – Separation

IEC 60737, Nuclear power plants – Instrumentation important to safety – Temperature sensors

(in-core and primary coolant circuit) – Characteristics and test methods

IEC 60772, Nuclear power plants – Instrumentation systems important to safety – Electrical

penetration assemblies in containment structures

IEC 60880, Nuclear power plants – Instrumentation and control systems important to safety

Software aspects for computer-based systems performing category A functions
IEC 60964, Nuclear power plants – Control rooms – Design

IEC 60965, Nuclear power plants – Control rooms – Supplementary control room for reactor

shutdown without access to the main control room

IEC 60987, Nuclear power plants – Instrumentation and control important to safety – Hardware

requirements
---------------------- Page: 10 ----------------------
IEC TR 63400:2021 © IEC 2021 – 9 –

IEC 60988, Nuclear power plants – Instrumentation important to safety – Acoustic monitoring

systems for detection of loose parts: characteristics, design criteria and operational procedures

IEC 61031, Nuclear facilities – Instrumentation and control systems – Design, location and

application criteria for installed area gamma radiation dose rate monitoring equipment for use

during normal operation and anticipated operational occurrences

IEC 61225, Nuclear power plants – Instrumentation, control and electrical power systems –

Requirements for static uninterruptible DC and AC power supply systems

IEC 61226, Nuclear power plants – Instrumentation, control and electrical power systems

important to safety – Categorization of functions and classification of systems

IEC 61250, Nuclear reactors – Instrumentation and control systems important for safety –

Detection of leakage in coolant systems

IEC 61508-1, Functional safety of electrical/electronic/programmable electronic safety-related

systems – Part 1: General requirements

IEC 61508-2, Functional safety of electrical/electronic/programmable electronic safety-related

systems – Part 2: Requirements for electrical/electronic/programmable electronic safety-related

systems

IEC 61508-3, Functional safety of electrical/electronic/programmable electronic safety-related

systems – Part 3: Software requirements

IEC 61508-4, Functional safety of electrical/electronic/programmable electronic safety-related

systems – Part 4: Definitions and abbreviations

IEC 61508-7, Functional safety of electrical/electronic/programmable electronic safety-related

systems – Part 7: Overview of techniques and measures
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.