EN 60671:2011
(Main)Nuclear power plants - Instrumentation and control systems important to safety - Surveillance testing
Nuclear power plants - Instrumentation and control systems important to safety - Surveillance testing
Lays down principles for testing I&C systems performing category A, B and C functions, per IEC 61226, during normal power operation and shutdown, so as to check the functional availability especially with regard to the detection of faults that could prevent the proper operation of the functions important to safety. Covers the possibility of testing at short intervals or continuous surveillance, as well as periodic testing at longer intervals. It also establishes basic rules for the design and application of the test equipment and its interface with the systems important to safety. The main change with respect to the previous edition includes an extension of the scope to cover all systems important to safety, and a requirement gradation for systems and equipment performing category A, B and C functions.
Kernkraftwerke - Leittechnik für Systeme mit sicherheitstechnischer Bedeutung - Prüfungen zur Sicherstellung der Funktionsfähigkeit
Centrales nucléaires de puissance - Systèmes d'instrumentation et de contrôle-commande importants pour la sûreté - Essais de surveillance
Etablit les principes applicables aux systèmes d'I&C réalisant des fonctions de catégories A, B ou C, telles que définies par la CEI 61226, durant le fonctionnement normal en puissance ou les arrêts de l'installation, de façon à en vérifier la disponibilité fonctionnelle en particulier en ce qui concerne la détection des défauts qui pourraient empêcher le bon fonctionnement des fonctions importantes pour la sûreté. Traite des capacités d'essais réalisés à intervalles courts ou de surveillance continue, aussi bien que d'essais périodiques réalisés à intervalles plus longs. Etablit aussi les règles de base de conception et de réalisation des essais matériels et de leur interface avec les systèmes importants pour la sûreté. Le changement technique principal par rapport à l'édition précédente est une extension du domaine de la norme pour couvrir tous les systèmes importants pour la sûreté, et la gradation des exigences pour les systèmes et matériels réalisant des fonctions de catégorie A, B ou C.
Jedrske elektrarne - Merilna in nadzorna oprema za zagotavljanje varnosti - Nadzorno preskušanje
Kjer splošni varnostni standardi zahtevajo funkcionalno zanesljivost, je en vidik dokazovanja take zanesljivosti preskušanje, ki se izvaja sproti med obratovanjem elektrarne ali med prekinitvijo obratovanja elektrarne pri pripravi za povratek k obratovanju. Ta standard določa načela za preskušanje merilne in nadzorne opreme, ki izvaja funkcije kategorije A, B in C, v skladu z IEC 61226, med normalnim obratovanjem in prekinitvijo obratovanja elektrarne, da se preveri funkcionalna razpoložljivost, predvsem glede zaznavanja napak, ki bi lahko preprečile pravilno delovanje funkcij za zagotavljanje varnosti. Zajema preskušanje s kratkimi intervali ali neprekinjen nadzor ter občasno preskušanje z daljšimi intervali. Vzpostavlja tudi osnovna pravila za načrtovanje in uporabo preskusne opreme in vmesnika z opremo za zagotavljanje varnosti. Obravnavan je tudi učinek napake preskusne opreme na zanesljivost merilne in nadzorne opreme. Vrste nadzornih preskusov lahko vključujejo: - samopreskušanje merilne in nadzorne opreme; - preskus skupine opreme ali sestavnih delov za potrditev lastnosti, ki podpirajo varnostno funkcijo (neprekinjenost, razpoložljivost energije itd.); - preskus na osnovi redundance informacij ali primerjave kontrolnih podpisov (preverjanje ujemanja za redundantne senzorje, CRC-preverjanje, preskusna vsota itd.); - občasno preskušanje, povezano s pravilnostjo funkcionalnega vedenja merilne in nadzorne opreme. Cilji zanesljivosti merilne in nadzorne opreme se dosežejo z uporabo ustrezne kombinacije zgoraj navedenih preskusov. Obseg preskušanja merilne in nadzorne opreme sega od vmesnika s senzorji s postopkom do sprožilne naprave. Velja za nameščeno merilno in nadzorno opremo ter za začasne napeljave, ki so del merilne in nadzorne opreme za zagotavljanje varnosti (na primer, pomožna oprema za preskuse in poskuse ob usposobitvi za zagon). Ta standard velja tudi za posamezno elektromehansko opremo, kot so releji in elektromagnetni aktivatorji. Na merilni in nadzorni opremi se lahko izvajata preskušanje in nadzor, ki nista namenjena dokazovanju funkcionalne zmogljivosti, na primer za optimizacijo preventivnega vzdrževanja itd. Taki preskusi so zunaj obsega uporabe tega standarda, lahko pa se kombinirajo z nadzornim preskušanjem, ki se tu obravnava. Pri katerem koli sprotnem preskusu je treba pozorno raziskati morebitne interakcije in odvisnosti od napak med delom preskušane opreme in preskusnim delom, njihove vplive pa je treba celovito vključiti v ocenjevanje zanesljivosti funkcij za zagotavljanje varnosti (v skladu z IEC 61513).
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2011
Jedrske elektrarne - Merilna in nadzorna oprema za zagotavljanje varnosti -
Nadzorno preskušanje
Nuclear power plants - Instrumentation and control systems important to safety -
Surveillance testing
Kernkraftwerke - Leittechnik für Systeme mit sicherheitstechnischer Bedeutung -
Prüfungen zur Sicherstellung der Funktionsfähigkeit
Centrales nucléaires de puissance - Systèmes d'instrumentation et de contrôle
commande importants pour la sûreté - Essais de surveillance
Ta slovenski standard je istoveten z: EN 60671:2011
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 60671
NORME EUROPÉENNE
August 2011
EUROPÄISCHE NORM
ICS 27.120.20
English version
Nuclear power plants -
Instrumentation and control systems important to safety -
Surveillance testing
(IEC 60671:2007)
Centrales nucléaires de puissance - Kernkraftwerke -
Systèmes d'instrumentation et de Leittechnik für Systeme mit
contrôle-commande importants pour la sicherheitstechnischer Bedeutung -
sûreté - Prüfungen zur Sicherstellung der
Essais de surveillance Funktionsfähigkeit
(CEI 60671:2007) (IEC 60671:2007)
This European Standard was approved by CENELEC on 2011-08-08. 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 Central Secretariat 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 Central Secretariat 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60671:2011 E
Foreword
The text of the International Standard IEC 60671:2007, prepared by SC 45A, Instrumentation and control
of nuclear facilities, of IEC TC 45, Nuclear instrumentation, was submitted to the formal vote and was
approved by CENELEC as EN 60671 on 2011-08-08 without any modification.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2012-08-08
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2014-08-08
with the EN have to be withdrawn
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 measures in the subject-matter covered by this standard.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60671:2007 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 60671:2011
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60880 - Nuclear power plants - Instrumentation and EN 60880 -
control systems important to safety - Software
aspects for computer-based systems
performing category A functions
IEC 60987 - Nuclear power plants - Instrumentation and EN 60987 -
control important to safety - Hardware design
requirements for computer-based systems
IEC 61226 - Nuclear power plants - Instrumentation and EN 61226 -
control important to safety - Classification of
instrumentation and control functions
IEC 61513 - Nuclear power plants - Instrumentation and - -
control for systems important to safety -
General requirements for systems
IEC 62138 - Nuclear power plants - Instrumentation and EN 62138 -
control important for safety - Software aspects
for computer-based systems performing
category B or C functions
IAEA Safety guide - Instrumentation and control systems important - -
NS-G-1.3 to safety in nuclear power plants
INTERNATIONAL IEC
STANDARD
CEI
NORME
Second edition
INTERNATIONALE
Deuxième édition
2007-05
Nuclear power plants – Instrumentation
and control systems important to safety –
Surveillance testing
Centrales nucléaires de puissance –
Systèmes d’instrumentation et de contrôle-
commande importants pour la sûreté –
Essais de surveillance
PRICE CODE
T
CODE PRIX
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
Pour prix, voir catalogue en vigueur
– 2 – 60671 © IEC:2007
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.8
2 Normative References .9
3 Terms and definitions .9
4 Basic Principles for Surveillance Testing .11
4.1 General .11
4.2 Gradation of Requirements Based on Category .12
4.3 Extent of Surveillance Testing .12
4.4 Self-supervision in Lieu of Periodic Testing .12
4.5 Continuous Operation in Lieu of Periodic Testing .13
5 General Requirements for Surveillance Testing .13
5.1 Design Requirements .13
5.2 Procedures.14
5.3 Data to be recorded upon detection of a fault .14
5.4 Other data to be recorded .14
5.5 Test intervals .15
5.6 Verification of actuation set-points.15
5.7 Bypass .15
5.8 Response time .15
5.9 Restoration.16
6 Requirements for Testing of Sensors and Signal Processing Devices.16
6.1 General .16
6.2 Non-tested parts.16
6.3 Testing devices .16
6.4 Signals .16
6.5 Variation of signals.17
6.5.1 General .17
6.5.2 Slowly changing signal .17
6.5.3 Rapidly changing signal.17
6.5.4 Large change in signal .17
6.6 Operability.17
6.7 Sensor response time.18
6.8 Testing equipment.18
6.9 Calibration and transfer function.18
6.10 Surveillance .18
7 Requirements for Testing of Electromechanical Equipment.18
7.1 General .18
7.2 Interface.18
7.3 Typical functional tests.19
7.4 Continuous monitoring.19
7.5 Relays and valves .19
8 Requirements for Testing of Logic Assemblies .20
8.1 Scope.20
8.2 General .20
60671 © IEC:2007 – 3 –
8.3 Switching of signals.20
8.4 Testing signals .20
8.5 Interface.21
8.6 Data to be displayed.21
8.7 Data to be recorded.21
8.8 Detailed display.21
8.9 Testing equipment.21
8.10 Testing equipment using pulses .22
9 Self-supervision in computer-based I&C systems .22
9.1 Coverage of self supervision .22
9.2 Balance of diagnostic versus functional processing .23
9.3 Watchdog timers .23
9.4 Action taken on detected fault .23
9.5 Categorization of self-supervision software .24
Figure 1 – Extent of I&C Surveillance Testing .9
– 4 – 60671 © IEC:2007
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL
SYSTEMS IMPORTANT TO SAFETY –
SURVEILLANCE TESTING
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
...
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