SIST EN ISO 4126-5:2013/A1:2016
(Amendment)Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS) (ISO 4126-5:2013/Amd 1:2016)
Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS) (ISO 4126-5:2013/Amd 1:2016)
Sicherheitseinrichtungen gegen unzulässigen Überdruck - Teil 5: Gesteuerte Sicherheitsventile (CSPRS) (ISO 4126-5:2013/Amd 1:2016)
Dispositifs de sécurité pour protection contre les pressions excessives - Partie 5: Dispositifs de sécurité asservis (CSPRS) (ISO 4126-5:2013/Amd 1:2016)
Naprave za varovanje pred visokim tlakom - 5. del: Krmiljeni varnostni sistemi za sproščanje tlaka (CSPRS) - Dopolnilo A1 (ISO 4126-5:2013/Amd 1:2016)
General Information
- Status
- Published
- Public Enquiry End Date
- 14-Apr-2016
- Publication Date
- 16-Aug-2016
- Technical Committee
- TLP - Pressure vessels
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 08-Jul-2016
- Due Date
- 12-Sep-2016
- Completion Date
- 17-Aug-2016
Relations
- Effective Date
- 01-Sep-2016
Overview
EN ISO 4126-5:2013/A1:2016 is Amendment 1 to Part 5 of the ISO 4126 series, titled Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS). Published/approved by CEN in 2016, this document updates testing and performance requirements for CSPRS used to protect vessels, piping and systems from overpressure. It forms part of the EN/ISO framework for pressure-relief device safety and supports relevant EU Directive requirements.
Key topics and technical requirements
The amendment revises Clause 7.2.1 (General requirements) and defines testing media and allowable tolerances for operating characteristics:
Test media by service
- CSPRS for air or other gas: test with air, another gas of known characteristics, or superheated steam with at least 10 °C superheat.
- CSPRS for steam service: may be tested on steam, air or other gas of known characteristics.
- CSPRS for liquid service: test on water or other liquids of known characteristics.
Allowable tolerances / limits
- Set pressure: ±3% of set pressure or ±0.1 bar, whichever is greater.
- Overpressure: value declared by the manufacturer but not exceeding 10% of set pressure or 0.1 bar, whichever is greater.
- Lift of main valve at overpressure: must be at least the value stated by the manufacturer.
- Closing sensing pressure: must be no less than 93% of set pressure.
Additional items: the amendment is endorsed by CEN without modification and notes possible patent-rights considerations and applicability across national standards bodies.
Applications and who uses it
This standard is directly relevant to:
- Valve and safety device manufacturers designing and certifying CSPRS.
- Pressure equipment designers and plant engineers selecting pressure-relief solutions for gas, steam or liquid services.
- Inspection, testing and certification bodies performing type and routine testing.
- Asset owners and operators in process industries (chemical, petrochemical, power generation, utilities) implementing compliant overpressure protection.
Use of EN ISO 4126-5:2013/A1:2016 helps ensure predictable performance, compliance with regulatory safety requirements, and consistent testing procedures for controlled safety pressure relief systems.
Related standards
- ISO 4126 series (other parts) covering different types of pressure-relief devices and general requirements.
- Relevant national adoptions of the EN ISO text and accompanying informative Annex ZA for EU Directive relationships.
Keywords: EN ISO 4126-5:2013/A1:2016, CSPRS, controlled safety pressure relief systems, safety devices for excessive pressure, set pressure tolerance, overpressure, industrial valves, pressure-relief testing.
Frequently Asked Questions
SIST EN ISO 4126-5:2013/A1:2016 is a amendment published by the Slovenian Institute for Standardization (SIST). Its full title is "Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS) (ISO 4126-5:2013/Amd 1:2016)". This standard covers: Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS) (ISO 4126-5:2013/Amd 1:2016)
Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS) (ISO 4126-5:2013/Amd 1:2016)
SIST EN ISO 4126-5:2013/A1:2016 is classified under the following ICS (International Classification for Standards) categories: 13.240 - Protection against excessive pressure. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 4126-5:2013/A1:2016 has the following relationships with other standards: It is inter standard links to SIST EN ISO 4126-5:2013. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 4126-5:2013/A1:2016 is associated with the following European legislation: EU Directives/Regulations: 97/23/EC; Standardization Mandates: M/071. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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Standards Content (Sample)
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Safety devices for protection against excessive pressure - Part 5: Controlled safety
pressure relief systems (CSPRS) (ISO 4126-5:2013/Amd 1:2016)
Sicherheitseinrichtungen gegen unzulässigen Überdruck - Teil 5: Gesteuerte
Sicherheitsventile (CSPRS) (ISO 4126-5:2013/Amd 1:2016)
Dispositifs de sécurité pour protection contre les pressions excessives - Partie 5:
Dispositifs de sécurité asservis (CSPRS) (ISO 4126-5:2013/Amd 1:2016)
Ta slovenski standard je istoveten z: EN ISO 4126-5:2013/A1:2016
ICS:
13.240 Varstvo pred previsokim Protection against excessive
tlakom pressure
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 4126-5:2013/A1
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2016
EUROPÄISCHE NORM
ICS 13.240
English Version
Safety devices for protection against excessive pressure -
Part 5: Controlled safety pressure relief systems (CSPRS) -
Amendment 1 (ISO 4126-5:2013/Amd 1:2016)
Dispositifs de sécurité pour protection contre les Sicherheitseinrichtungen gegen unzulässigen
pressions excessives - Partie 5: Dispositifs de sécurité Überdruck - Teil 5: Gesteuerte Sicherheitsventile
asservis (CSPRS) - Amendement 1 (ISO 4126- (CSPRS) - Änderung 1 (ISO 4126-5:2013/Amd 1:2016)
5:2013/Amd 1:2016)
This amendment A1 modifies the European Standard EN ISO 4126-5:2013; it was approved by CEN on 19 May 2016.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant 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 CEN
member.
This amendment exists 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4126-5:2013/A1:2016 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 4126-5:2013/A1:2016) has been prepared by Technical Committee ISO/TC 185
"Safety devices for protection against excessive pressure" in collaboration with Technical Committee
CEN/TC 69 “Industrial valves” the secretariat of which is held by AFNOR.
This Amendment to the European Standard EN ISO 4126-5:2013 shall be given the status of a national
standard, either by publication of an identical text or by endorsement, at the latest by December 2016,
and conflicting national standards shall be withdrawn at the latest by December 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive, see informative Annex ZA, which is an integral part of
EN ISO 4126-5:2013.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lux
...
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