SIST EN 14071:2025

LPG equipment and accessories - Pressure relief valves for LPG pressure vessels - Ancillary equipment

This document specifies the design, testing and inspection requirements for pressure relief valve isolating devices, valve manifolds, vent pipes and system assemblies which are, where necessary, used with pressure relief valves for use in static pressure vessels for Liquefied Petroleum Gas (LPG) service.
This document addresses both prototype testing and production testing of isolating devices and PRV manifolds.
Pressure relief valves for LPG pressure vessels are specified in EN 14129:2014.

Flüssiggas-Geräte und Ausrüstungsteile - Druckentlastungsventile für Druckbehälter für Flüssiggas (LPG) - Zusatzausrüstung

Dieses Dokument legt die Anforderungen an die Auslegung, Prüfung und Inspektion von Sicherheitsven-til Schließeinrichtungen, Sicherheitsventilverteilern, Abblaseleitungen und Systembaugruppen fest, welche bei Bedarf zusammen mit Sicherheitsventilen für ortsfeste Druckbehälter für den Betrieb mit Flüssiggas (LPG, en: Liquefied Petroleum Gas) verwendet werden.
Dieses Dokument behandelt sowohl die Prototyp Prüfung als auch die fertigungsbegleitende Prüfung von Schließeinrichtungen und Sicherheitsventilverteilern.
Sicherheitsventile für Druckbehälter für Flüssiggas (LPG) sind in EN 14129:2014 festgelegt.

Équipements pour GPL et leurs accessoires - Soupapes de sécurité des réservoirs de gaz de pétrole liquéfié (GPL) - Équipement auxiliaire

Le présent document spécifie les exigences en matière de conception, essais et inspection relatives aux clapets porte-soupape, collecteurs de soupapes, prolongateurs de soupapes et systèmes d'assemblage utilisés, lorsque nécessaire, avec les soupapes de sécurité destinées à être installées sur des réservoirs sous pression statiques contenant du gaz de pétrole liquéfié (GPL).
Le présent document traite à la fois des essais sur prototype et des essais de production des clapets porte-soupape et des collecteurs de soupapes.
Les soupapes de sécurité pour réservoirs GPL sous pression sont spécifiées dans l'EN 14129:2014.

Oprema in pribor za utekočinjeni naftni plin (UNP) - Varnostni ventili za tlačne posode za UNP - Pomožna oprema

General Information

• Status: Published
• Public Enquiry End Date: 01-Apr-2021
• Publication Date: 14-Jan-2025
• ICS: 23.020.32 - Pressure vessels
• ICS: 23.060.40 - Pressure regulators
• Technical Committee: TLP - Pressure vessels
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 18-Dec-2024
• Due Date: 22-Feb-2025
• Completion Date: 15-Jan-2025
• Directive: 2008/68/EC - Directve 2008/68/EC of the European Parliament and of the council of 24 September 2008 on the inland transport of the dangerous goods
• Directive: 2014/68/EU - Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Mandate: M/086 - Mandate to CEN for standardization in the field of transport of dangerous goods
• Mandate: M/TDG - Standards for referencing in the RID-ADR
• Ref Project: EN 14071:2024 - LPG equipment and accessories - Pressure relief valves for LPG pressure vessels - Ancillary equipment

Relations

• Replaces: SIST EN 14071:2015+A1:2019 - LPG equipment and accessories - Pressure relief valves for LPG pressure vessels - Ancillary equipment
• Effective Date: 01-Feb-2025

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2025
Nadomešča:
SIST EN 14071:2015+A1:2019
Oprema in pribor za utekočinjeni naftni plin (UNP) - Varnostni ventili za tlačne
posode za UNP - Pomožna oprema
LPG equipment and accessories - Pressure relief valves for LPG pressure vessels -
Ancillary equipment
Flüssiggas-Geräte und Ausrüstungsteile - Druckentlastungsventile für Druckbehälter für
Flüssiggas (LPG) - Zusatzausrüstung
Équipements pour GPL et leurs accessoires - Soupapes de sécurité des réservoirs de
gaz de pétrole liquéfié (GPL) - Équipement auxiliaire
Ta slovenski standard je istoveten z: EN 14071:2024
ICS:
23.020.32 Tlačne posode Pressure vessels
23.060.40 Tlačni regulatorji Pressure regulators
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14071
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 23.060.40 Supersedes EN 14071:2015+A1:2019
English Version
LPG equipment and accessories - Pressure relief valves for
LPG pressure vessels - Ancillary equipment
Équipements pour GPL et leurs accessoires - Soupapes Flüssiggas-Geräte und Ausrüstungsteile -
de sécurité des réservoirs de gaz de pétrole liquéfié Druckentlastungsventile für Druckbehälter für
(GPL) - Équipements auxiliaires Flüssiggas (LPG) - Zusatzausrüstung
This European Standard was approved by CEN on 27 October 2024.

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. 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 European Standard 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, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14071:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Operating conditions . 9
5 Materials . 9
5.1 General . 9
5.2 Metallic materials . 10
5.3 Non-metallic components . 10
5.4 Lubricants, sealants, and adhesives . 11
5.5 Inspection Documents . 11
6 Design . 11
6.1 Introduction . 11
6.2 PRV isolating devices . 11
6.2.1 General . 11
6.2.2 Actuation . 11
6.2.3 Indication of closure . 11
6.2.4 Guiding arrangements . 12
6.2.5 Isolating mechanism security . 12
6.2.6 Interchangeability . 12
6.3 PRV manifold . 12
6.3.1 General . 12
6.3.2 Indication of port closure . 16
6.3.3 Port closure . 16
6.4 Vent pipe . 16
6.4.1 Design . 16
6.4.2 Materials . 16
6.4.3 Effect from external conditions. 16
6.5 Connections . 16
6.6 Threads . 17
6.7 Minimum requirements for springs . 17
7 Testing of the design . 17
7.1 General . 17
7.2 Test requirements . 17
7.3 Hydraulic proof test . 18
7.4 Relief valve isolator test . 18
7.5 Testing of audible signal of isolating devices and residual flow of isolating devices
and PRV manifolds . 19
7.6 Resistance of the isolating mechanism . 19
7.7 Over-torque deformation test . 19
7.8 Operation test . 19
7.8.1 General . 19
7.8.2 System test . 19
7.9 Stress cracking test . 20
7.9.1 General . 20
7.9.2 Moist ammonia air stress cracking test . 20
7.9.3 Mercurous nitrate immersion test . 20
8 Production testing of isolating devices and PRV manifolds . 20
9 Marking and labelling . 21
9.1 PRV isolating device . 21
9.2 PRV manifolds . 21
10 User instructions. 21
10.1 PRV isolating devices . 21
10.2 PRV manifolds . 22
Annex A (normative) Dimensions of master test pieces for PRV and isolating devices . 23
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2014/68/EU (Pressure Equipment Directive) aimed to be
covered . 25
Bibliography . 27

European foreword
This document (EN 14071:2024) has been prepared by Technical Committee CEN/TC 286 “LPG
equipment and accessories”, the secretariat of which is held by NSAI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2025, and conflicting national standards shall be
withdrawn at the latest by May 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request 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(s), see informative Annex ZA, which is an integral part of this
document.
This document supersedes EN 14071:2015+A1:2019.
The major changes in comparison to the previous edition include:
— Revision of 5.2 Metallic materials;
— Revision of 5.3 Non-metallic materials;
— Clarification to Table 1
— Revision of 6.3 Vent pipe
— Revision to the resistance of the isolating mechanism test, 7.6;
— Revision to the operation test, 7.8;
— Revision of the Kd value for M 36;
— Revision of Annex ZA.
Any feedback and questions on this document should be directed to the users’national standards body. A
complete listing of these bodies can be found on the CENwebsite.
According to the CEN-CENELEC Internal Regulations, the national standardsorganisations of the
following countries are bound to implement this EuropeanStandard: 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 ofNorth
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,Türkiye and the United
Kingdom.
SIST EN 1
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