EN 62765-1:2017

Nuclear powers plants - Instrumentation and control important to safety - Management of ageing of sensors and transmitters - Part 1: Pressure transmitters

IEC 62765-1:2015 provides strategies, technical requirements, and recommended practices for the management of ageing to ensure that ageing of pressure transmitters important to safety in nuclear power plants (NPPs) can be identified and that suitable remedial actions are undertaken as necessary to demonstrate that the safety of the plant will not be impaired. This standard is aligned with IEC 62342, which provides guidance on ageing management for I&C systems important to safety in NPPs. This standard, IEC 62765-1, is the first part for pressure transmitters in the IEC 62765 sensor and transmitter series for pressure, temperature, neutron and other sensors.

Kernkraftwerke - Leittechnik mit sicherheitstechnischer Bedeutung - Alterungsmanagement von Sensoren und Transmittern - Teil 1: Drucktransmitter

Centrales nucléaires de puissance - Instrumentation et contrôle-commande importants pour la sûreté - Gestion du vieillissement des capteurs et des transmetteurs - Partie 1: Transmetteurs de pression

L'IEC 62765:2015 fournit des stratégies, des exigences techniques, et la description de pratiques recommandées pour la gestion du vieillissement pour assurer que le vieillissement des transmetteurs de pression importants pour la sûreté des centrales nucléaires de puissance peut être identifié et que les actions pour y remédier sont lancées comme nécessaire pour démontrer que la sûreté de l'installation ne sera pas dégradée. La présente norme est cohérente avec l'IEC 62342 qui fournit des recommandations sur la gestion du vieillissement des systèmes d'I&C des centrales nucléaires de puissance importants pour la sûreté. La présente norme IEC 62765-1 dédiée aux transmetteurs de pression, est la première partie de la série IEC 62765 qui couvrira les capteurs et transmetteurs de pression, de température, les capteurs neutroniques et autres.

Jedrske elektrarne - Instrumenti in krmilje, pomembni za varnost - Upravljanje staranja senzorjev in oddajnikov - 1. del: Dajalniki tlaka (IEC 62765-1:2015)

Ta del standarda IEC 62765 določa strategije, tehnične zahteve in priporočene prakse za upravljanje staranja, da se zagotovi prepoznavanje staranja dajalnikov tlaka, ki so pomembni za varnost v jedrskih elektrarnah (NPP), in da se izvedejo ustrezni ukrepi za odpravo pomanjkljivosti kot prikaz, da varnost elektrarne ni ogrožena. Ta standard je skladen s standardi IEC 62342, ki opredeljujejo smernice glede upravljanja staranja sistemov I&C, ki so pomembni za varnost jedrskih elektrarn. Standard IEC 62765-1 je prvi del o dajalnikih tlaka iz skupine standardov IEC 62765 o senzorjih in oddajnikih za tlačne, temperaturne, nevtronske in druge senzorje. Ta standard obravnava analogne elektronske dajalnike tlaka z električnim izhodnim signalom, ki je funkcija delovanja tlaka na del za zaznavanje, ki so zajeti v sistemih I&C, pomembnih za varnost v skladu s terminologijo IAEA.
Vsaka programska oprema, ki se uporablja za pridobivanje podatkov, kvalifikacijo podatkov ali analizo podatkov za preskušanje oddajnika ali sistem za nadzor stanja za dajalnik tlaka, se razvrsti v skladu s standardom IEC 62138, odvisno od njene funkcionalnosti, kot je določeno v standardu IEC 61226. Ustreznost programske opreme za digitalno obdelavo podatkov je izven področja uporabe tega standarda.
Dodatni sistem za nadzor stanja za upravljanje staranja dajalnikov tlaka se razvrsti v skladu s standardom IEC 61226 glede na funkcionalnost sistema. V primeru razvrstitve je programska oprema, ki je nameščena v sistem za nadzor, v skladu s standardom IEC 62138 za funkciji, razvrščeni kot B ali C.
Za okoljsko kvalifikacijo veljajo zahteve standarda IEC 60780. Za oceno zmogljivosti oddajnikov v kanalu instrumenta varnostnega sistema se uporabljajo metode standarda IEC 62385, zahteve standarda IEC 61888 in zahteve za nadzorno preskušanje standarda IEC 60671.
Meritve tlaka se lahko uporabijo za merjenje drugih parametrov, ki so lahko povezani s tlakom, npr. raven ali pretok. Vmesniki, ki vključujejo vode za zaznavanje, kondenzatorje in primarne (npr. pretočne) elemente med procesom in oddajniki, spadajo na področje uporabe
tega standarda.

General Information

• Status: Published
• Publication Date: 12-Oct-2017
• Withdrawal Date: 10-Sep-2020
• ICS: 27.120.20 - Nuclear power plants. Safety
• Technical Committee: CLC/TC 45AX - Nuclear power plants
• Drafting Committee: CLC/TC 45AX - Nuclear power plants
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 13-Oct-2017
• Due Date: 19-Nov-2018
• Completion Date: 13-Oct-2017
• Ref Project: SIST EN 62765-1:2018 - Nuclear powers plants - Instrumentation and control important to safety - Management of ageing of sensors and transmitters - Part 1: Pressure transmitters (IEC 62765-1:2015)

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2018
Jedrske elektrarne - Instrumenti in krmilje, pomembni za varnost - Upravljanje
staranja senzorjev in oddajnikov - 1. del: Dajalniki tlaka (IEC 62765-1:2015)
Nuclear powers plants - Instrumentation and control important to safety - Management of
ageing of sensors and transmitters - Part 1: Pressure transmitters (IEC 62765-1:2015)
Kernkraftwerke - Leittechnik mit sicherheitstechnischer Bedeutung -
Alterungsmanagement von Sensoren und Transmittern - Teil 1: Drucktransmitter (IEC
62765-1:2015)
Centrales nucléaires de puissance - Instrumentation et contrôle-commande importants
pour la sûreté - Gestion du vieillissement des capteurs et des transmetteurs - Partie 1:
Transmetteurs de pression (IEC 62765-1:2015)
Ta slovenski standard je istoveten z: EN 62765-1:2017
ICS:
27.120.20 Jedrske elektrarne. Varnost Nuclear power plants. Safety
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62765-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2017
ICS 27.120.20
English Version
Nuclear powers plants - Instrumentation and control important
to safety - Management of ageing of sensors and transmitters -
Part 1: Pressure transmitters
(IEC 62765-1:2015)
Centrales nucléaires de puissance - Instrumentation et Kernkraftwerke - Leittechnik mit sicherheitstechnischer
contrôle-commande importants pour la sûreté - Gestion du Bedeutung - Alterungsmanagement von Sensoren und
vieillissement des capteurs et des transmetteurs - Partie 1: Transmittern - Teil 1: Drucktransmitter
Transmetteurs de pression (IEC 62765-1:2015)
(IEC 62765-1:2015)
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 62765-1:2017 E
European foreword
This document (EN 62765-1:2017) consists of the text of IEC 62765-1:2015 prepared by
SC 45A "Instrumentation, control and electrical systems of nuclear facilities" of IEC/TC 45 "Nuclear
instrumentation".
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 62765-1:2015 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 61508-1 NOTE Harmonized as EN 61508-1.
IEC 61508-2 NOTE Harmonized as EN 61508-2.
IEC 61508-3 NOTE Harmonized as EN 61508-3.
IEC 61508-4 NOTE Harmonized as EN 61508-4.
IEC 61513 NOTE Harmonized as EN 61513.
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 60671 -  Nuclear power plants - Instrumentation EN 60671 -
and control systems important to safety -
Surveillance testing
IEC 60780 -  Nuclear power plants - Electrical - -
equipment of the safety system -
Qualification
IEC 61226 -  Nuclear power plants - Instrumentation EN 61226 -
and control important to safety -
Classification of instrumentation and
control functions
IEC 62138 -  Nuclear power plants - Instrumentation EN 62138 -
and control important for safety - Software
aspects for computer-based systems
performing category B or C functions
IEC 62342 -  Nuclear power plants - Instrumentation - -
and control systems important to safety -
Management of ageing
IEC 62385 2007 Nuclear power plants - Instrumentation and - -
control important to safety - Methods for
assessing the performance of safety
system instrument channels
IEC 62465 2010 Nuclear power plants - Instrumentation and - -
control important to safety - Management
of ageing of electrical cabling systems

IEC 62765-1 ®
Edition 1.0 2015-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear powers plants – Instrumentation and control important to safety –

Management of ageing of sensors and transmitters –

Part 1: Pressure transmitters
Centrales nucléaires de puissance – Instrumentation et contrôle-commande

importants pour la sûreté – Gestion du vieillissement des capteurs et des

transmetteurs –
Partie 1: Transmetteurs de pression

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 27.120.20 ISBN 978-2-8322-2629-2

– 2 – IEC 62765-1:2015 © IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Abbreviations . 12
5 Background . 12
5.1 General . 12
5.2 Type of transmitter and interface. 12
5.2.1 Type of transmitters . 12
5.2.2 Interface between sensing part and process . 13
5.3 Reasons for transmitter ageing management . 13
5.4 Environmental stressors . 14
5.4.1 General . 14
5.4.2 Radiation . 14
5.4.3 Temperature . 15
5.4.4 Humidity . 15
5.4.5 Pressure transients . 15
5.4.6 Vibration . 15
5.4.7 Corrosive chemical reaction . 15
5.5 Sensing line problems to be considered with transmitter ageing . 16
5.6 Techniques for detecting pressure transmitter ageing . 16
6 Ageing management of transmitters . 17
6.1 General . 17
6.2 Methodology of ageing management . 17
6.3 Identification of ageing by performance verification test . 18
6.4 Test and inspection interval . 18
6.5 Test location . 19
6.6 Calibration of measurement and test equipment . 19
6.7 Test and inspection results . 19
6.8 Validation of test methods . 19
6.9 Classification of condition monitoring system and its software . 19
6.10 Replacement of transmitter or its parts . 19
7 Acceptable means for transmitter testing . 20
8 Relationship between initial qualification and transmitter ageing management . 20
Annex A (informative)  Calibration for type tests or periodic tests . 21
A.1 General . 21
A.2 Configuration for calibration of transmitters . 21
A.3 Uncertainty and TDF between M&TE and EUT . 21
A.4 Criteria for calibration tolerance . 22
A.4.1 As-found value and as-left value . 22
A.4.2 Allowable conditions for adjustment in calibration . 22
A.5 Calibration with adjustment . 22
Annex B (informative) Performance verification tests . 23
B.1 Test – Verification of performance . 23

IEC 62765-1:2015 © IEC 2015 – 3 –
B.2 Acceptable limits for test . 23
B.2.1 Linearity and accuracy . 23
B.2.2 Response time . 24
B.3 Alternative method with on-line calibration . 24
B.4 Remedial actions for inoperable transmitters . 25
B.5 Written procedure for calibration . 25
Bibliography . 27

Figure 1 – Conceptual methodology of ageing management . 18
Figure A.1 – Process and transmitter configuration for calibration . 21
...