IEC/IEEE 62582-6:2019
(Main)Nuclear power plants - Instrumentation and control important to safety - Electrical equipment condition monitoring methods - Part 6: Insulation resistance
Nuclear power plants - Instrumentation and control important to safety - Electrical equipment condition monitoring methods - Part 6: Insulation resistance
IEC/IEEE 62582-6:2019 contains methods for condition monitoring of organic and polymeric materials in instrumentation and control cables using insulation resistance measurements in the detail necessary to produce accurate and reproducible results during simulated accident conditions. It includes the requirements for the measurement system and measurement procedure, and the reporting of the measurement results.
NOTE Measurement of insulation resistance during simulated accident conditions with the aim of determining the lowest value during the accident in order to assess cable performance involves special requirements given in this document. Methods for measurement under stable (non-accident) conditions are available in other international standards, e.g. IEC 62631-3-3.
The different parts of the IEC/IEEE 62582 series are measurement standards, primarily for use in the management of ageing in initial qualification and after installation. IEC/IEEE 62582-1 includes requirements for the application of the other parts of the IEC/IEEE 62582 series and some elements which are common to all methods. Information on the role of condition monitoring in qualification of equipment important to safety is found in IEC/IEEE 60780-323.
Centrales nucléaires de puissance - Instrumentation et contrôle-commande importants pour la sûreté - Méthodes de surveillance de l'état des matériels électriques - Partie 6: Résistance d'isolement
l'IEC/IEEE 62582-6:2019 contient les méthodes de surveillance de l'état des matériaux organiques et polymères utilisés dans les câbles d'instrumentation et de contrôle‑commande, sur la base de mesures de la résistance d'isolement et de façon suffisamment détaillée pour obtenir des résultats précis et reproductibles en conditions accidentelles simulées. Elle comprend les exigences pour le système de mesure et la procédure de mesure, ainsi que les rapports des résultats de mesure.
NOTE La mesure de la résistance d'isolement en conditions accidentelles simulées dans le but de déterminer la valeur la plus faible durant l'accident pour évaluer les performances des câbles, implique le respect des exigences particulières définies dans le présent document. Les méthodes de mesure en conditions normales (non accidentelles) sont disponibles dans d'autres Normes internationales, par exemple dans l'IEC 62631-3-3.
Les différentes parties de la série IEC/IEEE 62582 sont des normes de mesure, principalement destinées à être utilisées pour la gestion du vieillissement dans le cadre de la qualification initiale et après installation. L'IEC/IEEE 62582-1 fournit les exigences applicables à toutes les autres parties de la série IEC/IEEE 62582 et certains éléments communs à l'ensemble des méthodes. L'IEC/IEEE 60780-323 fournit des informations concernant le rôle de la surveillance de l'état dans la qualification des matériels importants pour la sûreté.
General Information
Standards Content (Sample)
IEC/IEEE 62582-6
®
Edition 1.0 2019-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants ‒ Instrumentation and control important to safety ‒
Electrical equipment condition monitoring methods –
Part 6: Insulation resistance
Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Méthodes de surveillance de l'état des matériels
électriques –
Partie 6: Résistance d'isolement
IEC/IEEE 62582-6:2019-10(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2019 IEC, Geneva, Switzerland
Copyright © 2019 IEEE
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 being
secured. Requests for permission to reproduce should be addressed to either IEC at the address below or IEC’s
member National Committee in the country of the requester or from IEEE.
IEC Central Office Institute of Electrical and Electronics Engineers, Inc.
3, rue de Varembé 3 Park Avenue
CH-1211 Geneva 20 New York, NY 10016-5997
Switzerland United States of America
Tel.: +41 22 919 02 11 stds.ipr@ieee.org
info@iec.ch www.ieee.org
www.iec.ch
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 the IEEE
IEEE is the world’s largest professional association dedicated to advancing technological innovation and excellence for
the benefit of humanity. IEEE and its members inspire a global community through its highly cited publications,
conferences, technology standards, and professional and educational activities.
About IEC/IEEE publications
The technical content of IEC/IEEE publications is kept under constant review by the IEC and IEEE. 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 Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
---------------------- Page: 2 ----------------------
IEC/IEEE 62582-6
®
Edition 1.0 2019-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants ‒ Instrumentation and control important to safety ‒
Electrical equipment condition monitoring methods –
Part 6: Insulation resistance
Centrales nucléaires de puissance – Instrumentation et contrôle-commande
importants pour la sûreté – Méthodes de surveillance de l'état des matériels
électriques –
Partie 6: Résistance d'isolement
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-7050-9
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: 3 ----------------------
– 2 – IEC/IEEE 62582-6:2019 © IEC/IEEE 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Abbreviated terms and acronyms . 9
5 General description . 10
6 Applicability and reproducibility . 12
7 Instrumentation . 12
7.1 Measurement voltage level . 12
7.2 Uncertainty . 12
7.3 Calibration . 13
8 IR measurement procedure . 13
8.1 General . 13
8.2 Requirements on tracking of changes of IR during the simulated accident
conditions . 13
8.3 Test specimen . 13
8.4 Interference . 13
8.5 Conditioning . 13
8.6 IR measurement during the dynamic phase of the simulated accident
conditions . 14
8.6.1 Set-up for the measurement . 14
8.6.2 Connection of IR voltage and start of measurement . 14
8.6.3 Default voltage . 14
8.6.4 Determination of IR value with the specimen not energized during the
accident simulation . 14
8.6.5 Determination of the IR value with the specimen energized during the
accident simulation . 15
9 Measurement report . 16
Annex A (informative) Example of equivalent diagram for a cable and the measuring
device using DC . 17
Annex B (informative) Measurement of leakage current using AC voltage . 18
Annex C (informative) Dependence of IR on temperature only and combined with
steam . 19
Annex D (informative) Examples of results of measurement of IR on aged cables
during simulated accident conditions. 20
Annex E (informative) Example of a measurement loop and calculation of the time
available for stabilization for more than one conductor or group of conductors
measured with the same measurement instrument . 23
E.1 Example of one measurement loop . 23
E.2 Total time for each measurement of all combinations during the dynamic
phase of the simulated accident conditions . 23
Bibliography . 24
Figure 1 – Time to stabilization of IR measured before LOCA, after 10 min in LOCA
and after 60 min in LOCA . 11
---------------------- Page: 4 ----------------------
IEC/IEEE 62582-6:2019 © IEC/IEEE 2019 – 3 –
Figure A.1 – Set-up for measurement of IR using a DC voltage source (guard is not
needed if the ground plane is close to the insulator) . 17
Figure B.1 – Set-up for measurement of IR using an AC voltage source . 18
Figure C.1 – Temperature influence on IR of an insulation between 20 °C and 150 °C . 19
Figure D.1 – Example of result of measurement of IR between conductors and
ground/shielding during a LOCA test . 20
Figure D.2 – Example of measurement of IR between conductor and ground and
between conductors . 21
Figure D.3 – Example of measurement of IR on a three-conductor cable during LOCA
simulation . 22
Figure E.1 – Example of one measurement loop . 23
---------------------- Page: 5 ----------------------
– 4 – IEC/IEEE 62582-6:2019 © IEC/IEEE 2019
NUCLEAR POWER PLANTS ‒
INSTRUMENTATION AND CONTROL IMPORTANT TO SAFETY ‒
ELECTRICAL EQUIPMENT CONDITION MONITORING METHODS –
Part 6: Insulation resistance
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, 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.
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.
---------------------- Page: 6 ----------------------
IEC/IEEE 62582-6:2019 © IEC/IEEE 2019 – 5 –
International Standard IEC/IEEE 62582-6 has been prepared by subcommittee 45A:
Instrumentation, control and electrical power systems of nuclear facilities, of IEC technical
committee 45: Nuclear instrumentation, in cooperation with the Nuclear Power Engineering
1
Committee of the Power & Energy Society of the IEEE] , under the IEC/IEEE Dual Logo
Agreement.
It is published as an IEC/IEEE dual logo standard.
The text of this International Standard is based on the following documents:
FDIS Report on voting
45A/1267/FDIS 45A/1277/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
A list of all parts in the IEC/IEEE 62582 series, published under the general title Nuclear
power plants – Instrumentation and control important to safety – Electrical equipment
condition monitoring methods, can be found on the IEC website.
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 web site
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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication 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.
_____________
1
A list of IEEE participants can be found at the following URL: https://ieee-
sa.imeetcentral.com/p/eAAAAAAAQbmGAAAAACt2TZA
---------------------- Page: 7 ----------------------
– 6 – IEC/IEEE 62582-6:2019 © IEC/IEEE 2019
INTRODUCTION
a) Technical background, main issues and organisation of the Standard
This IEC/IEEE standard specifically focuses on insulation resistance measurement methods
for monitoring of the dielectric condition of instrumentation and control cables during
simulation of design basis events.
This IEC/IEEE standard is the sixth part of the IEC/IEEE 62582-series. It contains detailed
descriptions of condition monitoring based on insulation resistance measurements.
The IEC/IEEE 62582-series of standards is issued with a joint logo which makes it applicable
to management of ageing of electrical equipment qualified to IEEE as well as IEC Standards.
For aged cables and accessories, the dielectric behaviour during simulated accident
conditions generally indicates the condition of the cable during the simulated accident
condition.
Significant research has been performed on condition monitoring techniques and the use of
these techniques in equipment qualification as noted in NUREG/CR-6704, vol.2
(BNL-NUREG-52610) and JNES-SS-0903, 2009.
It is intended that this Standard be used by test laboratories, operators of nuclear power
plants, systems evaluators and licensors.
b) Situation of the current Standard in the structure of the IEC SC 45A standard series
IEC/IEEE 62582-6 is the third level IEC SC 45A document tackling the specific issue of
application and performance of insulation resistance measurements during simulated accident
conditions in nuclear power plants.
IEC/IEEE 62582-6 is to be read in association with IEC/IEEE 62582-1. IEC/IEEE 62582-1
provides requirements for application of methods for condition monitoring of electrical
equipment important to safety of nuclear power plants.
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 the Standard
It is important to note that this Standard establishes no additional functional requirements for
safety systems.
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 documents of the IEC SC 45A standard series are IEC 61513 and IEC 63046.
IEC 61513 provides general requirements for I&C systems and equipment that are used to
perform functions important to safety in 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 systems for nuclear power plants.
IEC 61513 and IEC 63046 refer directly to other IEC SC 45A standards for general topics
related to categorization of functions and classification of systems, qualification, separation,
---------------------- Page: 8 ----------------------
IEC/IEEE 62582-6:2019 © IEC/IEEE 2019 – 7 –
defence against common cause failure, control room design, electromagnetic compatibility,
cybersecurity, software and hardware aspects for programmable digital systems, coordination
of safety and security 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 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 45 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 and the implementing guide
NSS17 for computer security at nuclear facilities. The safety and security terminology and
definitions used by 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 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/SC 45A 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/SC 45A control
rooms 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/SC 45A domain was extended in 2013 to cover electrical systems. In 2014 and 2015 discussions
were held in IEC/SC 45A to decide how and where general requirements for the design of electrical systems were
to be considered. IEC/SC 45A experts recommended that an independent standard be developed at the same level
as IEC 61513 to establish general requirements for electrical systems. Project IEC 63046 is now launched to cover
this objective. When IEC 63046 is published, this NOTE 2 of the introduction of IEC/SC 45A standards will be
suppressed.
---------------------- Page: 9 ----------------------
– 8 – IEC/IEEE 62582-6:2019 © IEC/IEEE 2019
NUCLEAR POWER PLANTS ‒
INSTRUMENTATION AND CONTROL IMPORTANT TO SAFETY ‒
ELECTRICAL EQUIPMENT CONDITION MONITORING METHODS –
Part 6: Insulation resistance
1 Scope
This part of IEC/IEEE 62582 contains methods for condition monitoring of organic and
polymeric materials in instrumentation and control cables using insulation resistance
measurements in the detail necessary to produce accurate and reproducible results during
simulated accident conditions. It includes the requirements for the measurement system and
measurement procedure, and the reporting of the measurement results.
NOTE Measurement of insulation resistance during simulated accident conditions with the aim of determining the
lowest value during the accident in order to assess cable performance involves special requirements given in this
document. Methods for measurement under stable (non-accident) conditions are available in other international
standards, e.g. IEC 62631-3-3.
The different parts of the IEC/IEEE 62582 series are measurement standards, primarily for
use in the management of ageing in initial qualification and after installation. IEC/IEEE 62582-
1 includes requirements for the application of the other parts of the IEC/IEEE 62582 series
and some elements which are common to all methods. Information on the role of condition
monitoring in qualification of equipment important to safety is found in IEC/IEEE 60780-323.
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.
JCGM 100:2008, Evaluation of measurement data – Guide to the expression of uncertainty in
measurement. First edition 2008. Corrected version 2010
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
For definitions not specifically called out in this standard, the following references could be
useful:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
• IEEE Standards Online Dictionary: available at http://dictionary.ieee.org
3.1
capacitive charging current
current that charges the capacitor formed by the tested insulation between the conducting
parts connected to the measuring instrument inputs
Note 1 to entry: At the beginning the capacitor is not charged and high current is flowing. The current drops as
the capacitor is being charged.
---------------------- Page: 10 ----------------------
IEC/IEEE 62582-6:2019 © IEC/IEEE 2019 – 9 –
3.2
conductor
material that allows the flow of an electric current
Note 1 to entry: The term conductor used in this document is synonymous with the term wire.
3.3
insulation leakage current
current that flows through insulation
3.4
insulation resistance
resistance between two conducting parts separated by electric insulation
Note 1 to entry: The value of the measured insulation resistance shall be reported as Ωm.
3.5
polarization absorption current
component of a dielectric current that is proportional to the rate of accumulation of electric
charges within the dielectric
3.6
surface leakage current
current that flows on the surface of insulation between connection points of applied voltage
Note 1 to entry: The surface leakage current is constant with time.
4 Abbreviated terms and acronyms
AC Alternating current
DAQ Data acquisition
DC Direct current
DMM Digital multimeter
GUM Guide to the expression of uncertainty in measurement
JCGM Joint committee for guides in metrology
IR Insulation resistance
l Surface leakage current
s
l Insulation leakage current
i
l Polarization absorption current
p
l Capacitive charging current
c
LOCA Loss of coolant accident
R Resistance of the resistor intended for measuring the total leakage current
meas
U Voltage across the resistor R
meas meas
U Supply voltage
source
---------------------- Page: 11 ----------------------
– 10 – IEC/IEEE 62582-6:2019 © IEC/IEEE 2019
5 General description
Insulation resistance measurement is one commonly applied method for indication of the
condition of insulating components, primarily cable insulation
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.