prEN 17955
(Main)Industrial valves - Functional safety of safety-related automated valves
Industrial valves - Functional safety of safety-related automated valves
This standard defines procedures and methods with which all relevant mechanical components of automated industrial valve packages that are used as final elements in a safety instrumented system can be evaluated according to the rules of EN 61508 Parts 1, 2, 4, 6 and 7 in order to integrate them into a safety instrumented system (SIS). It provides a method to determine all relevant factors, associated with the product, to be fully taken into account and thereby meet the specific needs of users of the product.
The basic prerequisite for the application of this standard is that the intended use is known. This standard describes a system to avoid systematic faults conforming to the targeted Safety Integrity Level.
The standard applies to automated industrial valve packages that are used as final elements in a safety instrumented system. It can be applied to single components (e.g. valve, actuator or mechanical parts of solenoid valves) or to assemblies of several of these components and interconnecting parts (e.g. gears, adaptors, brackets, etc.). Electrical, electronic or programmable electronic parts have to be assessed according to EN 61508.
This standard does not apply to:
• Manually operated valves,
• Components in safety systems or risk-reducing devices that are not assessed and operated according to the principles of functional safety. (E.g. automatic safety valves like pressure relief valves).
The methods described can also be used for other mechanical components in a final element of the safety instrumented system if the applicability is confirmed by appropriate expert knowledge. (E.g dampers, brakes, clutches, …).
Industriearmaturen - Funktionale Sicherheit sicherheitsbezogener automatisierter Industriearmaturen
Robinetterie industrielle - Sécurité fonctionnelle des appareils de robinetterie automatisés assurant une fonction de sécurité
Industrijski ventili - Funkcionalna varnost varnostnih ventilov in pogonov
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 17955:2023
01-april-2023
Industrijski ventili - Funkcionalna varnost varnostnih ventilov in pogonov
Industrial valves - Functional safety of safety-related valves and actuators
Industrieamaturen - Funktionale Sicherheit sicherheitsbezogener Industriearmaturen und
Antriebe
Robinetterie industrielle - Sécurité fonctionnelle des appareils de robinetterie et
actionneurs liés à la sécurité
Ta slovenski standard je istoveten z: prEN 17955
ICS:
23.060.01 Ventili na splošno Valves in general
oSIST prEN 17955:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN 17955:2023
---------------------- Page: 2 ----------------------
oSIST prEN 17955:2023
DRAFT
EUROPEAN STANDARD
prEN 17955
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2023
ICS 23.060.01
English Version
Industrial valves - Functional safety of safety-related
valves and actuators
Robinetterie industrielle - Sécurité fonctionnelle des Industrieamaturen - Funktionale Sicherheit
appareils de robinetterie et actionneurs liés à la sicherheitsbezogener Industriearmaturen und
sécurité Antriebe
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 69.
If this draft becomes a European Standard, CEN 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.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17955:2023 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 17955:2023
prEN 17955:2023 (E)
Contents Page
European foreword . 4
Introduction . 5
2 Scope . 6
3 Normative references . 6
4 Terms and definitions . 7
5 Relationship and conformity with EN 61508-1, −2, −4, −6 and −7. 11
6 Basic requirements for development and production . 12
6.1 Evaluation of systematic capability . 12
6.2 Documentation management . 13
6.3 Functional safety management . 13
6.4 Safety lifecycle requirements for development and production of safety-related
automated industrial valves . 13
6.4.1 Objectives and requirements . 13
6.4.2 Mechanical requireme
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.