SIST EN 16631:2015
(Main)LPG equipment and accessories - Pressure relief valves for LPG pressure vessels - Reconditioning requirements
LPG equipment and accessories - Pressure relief valves for LPG pressure vessels - Reconditioning requirements
This European Standard specifies the requirements for the reconditioning, retesting and certification of
Pressure Relief Valves (PRVs) for LPG pressure vessels covered under the scope of EN 14129.
This European Standard applies to retesting and reconditioning of PRVs that are carried out in a workshop
and does not apply to site adjustment of installed PRVs.
Annex A is an informative annex detailing a sampling approach for PRV requalification which should only be
used in case of on-site requalification of series produced pressure vessels fitted with series produced PRVs.
Flüssiggas-Geräte und Ausrüstungsteile - Sicherheitsventile für Druckbehälter für Flüssiggas (LPG) - Anforderungen an die Instandsetzung
Diese Europäische Norm legt die Anforderungen für die Instandsetzung, Wiederholungsprüfung und Zertifizierung von Sicherheitsventilen für Druckbehälter (PRV) für Flüssiggas (LPG) fest, die in den Anwendungsbereich der EN 14129 fallen.
Diese Europäische Norm gilt für Wiederholungsprüfungen und Instandsetzungen von PRV, welche in einer Werkstatt erfolgen, nicht jedoch für die Einstellung eingebauter PRV am Anwendungsort.
Anhang A ist ein informativer Anhang, der ein Stichprobenverfahren zur erneuten Qualifizierung von PRV enthält, das ausschließlich für die erneute Qualifizierung von seriengefertigten Druckbehältern mit serien¬gefertigten PRV am Anwendungsort angewendet werden sollte.
Équipements pour GPL et leurs accessoires - Soupapes de sécurité pour réservoirs de GPL sous pression - Exigences de reconditionnement
Le présent document spécifie les exigences concernant le renouvellement des essais, le reconditionnement et la certification des soupapes de sécurité destinées aux réservoirs de GPL sous pression couverts par le domaine d'application de l'EN 14129.
La présente norme s'applique au renouvellement des essais et au reconditionnement des soupapes de sécurité réalisés en atelier et ne s'applique pas au réglage sur site des soupapes de sécurité installées.
L'Annexe A est une annexe informative détaillant une méthode d'échantillonnage pour la requalification de soupapes de sécurité qui ne doit être utilisée qu'en cas de requalification sur site de réservoirs sous pression produits en série équipés de soupapes de sécurité produites en série.
Oprema in pribor za utekočinjeni naftni plin (UNP) - Varnostni ventili za tlačne posode za utekočinjeni naftni plin (UNP) - Zahteve za obnovo
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flüssiggas-Geräte und Ausrüstungsteile - Sicherheitsventile für Druckbehälter für Flüssiggas (LPG) - Anforderungen an die InstandsetzungÉquipements pour GPL et leurs accessoires - Soupapes de sécurité pour réservoirs de GPL sous pression - Exigences de reconditionnementLPG equipment and accessories - Pressure relief valves for LPG pressure vessels - Reconditioning requirements23.060.40Pressure regulators23.020.30MHNOHQNHPressure vessels, gas cylindersICS:Ta slovenski standard je istoveten z:EN 16631:2015SIST EN 16631:2015en,fr,de01-julij-2015SIST EN 16631:2015SLOVENSKI
STANDARD
SIST EN 16631:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16631
May 2015 ICS 23.060.40 English Version
LPG equipment and accessories - Pressure relief valves for LPG pressure vessels - Reconditioning requirements
Équipements pour GPL et leurs accessoires - Soupapes de sécurité pour réservoirs de GPL sous pression - Exigences de reconditionnement
Flüssiggas-Geräte und Ausrüstungsteile - Sicherheitsventile für Druckbehälter für Flüssiggas (LPG) - Anforderungen an die Instandsetzung This European Standard was approved by CEN on 5 March 2015.
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, 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 © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16631:2015 ESIST EN 16631:2015
EN 16631:2015 (E) 2 Contents Page Foreword .3 Introduction .4 1 Scope .5 2 Normative references .5 3 Terms and definitions .5 4 General .6 5 Materials .6 5.1 General .6 5.2 Lubricants, sealants and adhesives .6 5.3 Shelf life .6 5.3.1 Shelf life of components .6 5.3.2 Storage life of assembled PRVs .7 6 Inspection .7 7 Reconditioning .7 8 Pressure setting .8 8.1 General .8 8.2 Setting and testing of PRVs .8 9 Changing the set pressure .9 10 Marking .9 11 Documentation/Certification .9 12 Operating instructions .9 Annex A (informative)
Assessment of PRVs by sampling . 11 A.1 General testing of PRVs on a sampling basis . 11 A.2 Sample size . 11 A.3 Sample selection. 11 A.4 Inspection period . 12 A.5 Pass criteria . 12 Bibliography . 13
SIST EN 16631:2015
EN 16631:2015 (E) 3 Foreword This document (EN 16631:2015) has been prepared by Technical Committee CEN/TC 286 “Liquefied petroleum gas 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 November 2015, and conflicting national standards shall be withdrawn at the latest by November 2015. 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. 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, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16631:2015
EN 16631:2015 (E) 4 Introduction Protection of the environment is a key political issue in Europe and elsewhere. Protection of the environment is taken in a very broad sense. What is meant is the total life cycle aspects of, e.g. a product on the environment, including expenditure of energy and during all phases from mining of raw materials, fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. Provisions have to be restricted to a general guidance. Limit values are specified in national laws. It is recommended that companies using this standard develop an environmental management policy. For guidance see ISO 14000 series. It has been assumed in the drafting of this European Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. Where judgements are called for, it has been assumed that they are made by competent persons who have been trained specifically for the tasks. SIST EN 16631:2015
EN 16631:2015 (E) 5 1 Scope This European Standard specifies the requirements for the reconditioning, retesting and certification of Pressure Relief Valves (PRVs) for LPG pressure vessels covered under the scope of EN 14129. This European Standard applies to retesting and reconditioning of PRVs that are carried out in a workshop and does not apply to site adjustment of installed PRVs. Annex A is an informative annex detailing a sampling approach for PRV requalification which should only be used in case of on-site requalification of series produced pressure vessels fitted with series produced PRVs. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 751-1, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water — Part 1: Anaerobic jointing compounds EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water — Part 2: Non-hardening jointing compounds EN 751-3, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water — Part 3: Unsintered PTFE tapes EN 837-1, Pressure gauges — Part 1: Bourdon tube pressure gauges — Dimensions, metrology, requirements and testing EN 14129, LPG Equipment and accessories — Pressure relief valves for LPG pressure vessels ISO 2230, Rubber products — Guidelines for storage 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 liquefied petroleum gas LPG low pressure liquefied gas composed of one or more light hydrocarbons which are assigned to UN 1011, UN 1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane, butane isomers, butene with traces of other hydrocarbon gases 3.2 pressure relief valve PRV self-closing valve which automatically, without the assistance of any energy other than that of the vapour concerned, discharges vapour at a predetermined pressure, and operates with a pop action Note 1 to entry: This is known as a “safety valve” in ADR. 3.3 competent person person which by combination of appropriate qualification, training, experience, and resources, is able to make objective judgments on the subject SIST EN 16631:2015
EN 16631:2015 (E) 6 3.4 setting operation of adjusting and testing the start to discharge pressure to the nominal set pressure 3.5 reconditioning operation that includes complete dismantling of the valve, evaluation and replacement of components and reassembly 3.6 pop action rapid opening of the pressure relief valve sealing element so that the pressure relief valve is fully open, resulting from an increase of inlet pressure creating a sudden increase in force and compression of the spring 3.7 sealing element non-metallic moveable resilient component which affects a seal by contact with the pressure relief valve seat 4 General PRVs shall have a storage life of two years after assembly. All PRVs shall be subjected to inspection in accordance with Clause 6 prior to reconditioning, setting or changing the set pressure. PRVs where the set pressure (reset) is to be changed, shall meet the requirements of Clause 9. PRVs that have been sto
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SLOVENSKI STANDARD
oSIST prEN 16631:2013
01-november-2013
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LPG equipment and accessories - Pressure relief valves for LPG pressure vessels -
Reconditioning requirements
Flüssiggas-Geräte und Ausrüstungsteile - Sicherheitsventile für Druckbehälter für
Flüssiggas (LPG) - Anforderungen an die Instandsetzung
Équipements pour GPL et leurs accessoires - Soupapes de sécurité pour réservoirs de
GPL sous pression - Exigences de reconditionnement
Ta slovenski standard je istoveten z: prEN 16631
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
23.060.40 7ODþQLUHJXODWRUML Pressure regulators
oSIST prEN 16631:2013 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 16631:2013
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oSIST prEN 16631:2013
EUROPEAN STANDARD
DRAFT
prEN 16631
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2013
ICS 23.060.40
English Version
LPG equipment and accessories - Pressure relief valves for LPG
pressure vessels - Reconditioning requirements
Équipements pour GPL et leurs accessoires - Soupapes de Flüssiggas-Geräte und Ausrüstungsteile -
sécurité pour réservoirs de GPL sous pression - Exigences Sicherheitsventile für Druckbehälter für Flüssiggas (LPG) -
de reconditionnement Anforderungen an die Instandsetzung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 286.
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, 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.
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
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16631:2013: E
worldwide for CEN national Members.
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oSIST prEN 16631:2013
prEN 16631:2013 (E)
Contents Page
Foreword .3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 General .6
5 Materials .6
5.1 General .6
5.2 Lubricants, sealants and adhesives .6
5.3 Storage life .6
5.3.1 Storage life of components .6
5.3.2 Storage life of assembled relief valves .6
6 Inspection .7
7 Reconditioning .7
8 Pressure setting .8
8.1 General .8
8.2 Setting and testing of pressure relief valves .8
9 Changing the set pressure .9
10 Testing of check devices and manifolds .9
11 Marking .9
12 Documentation/Certification . 10
13 Operating instructions . 10
Annex A (informative) Assessment of valves by sampling . 11
A.1 General testing of PRVs on a sampling basis . 11
A.2 Homogenous batch . 11
A.3 Sample size . 11
A.4 Sample selection. 12
A.5 Inspection period . 12
A.6 Pass criteria . 12
Annex B (informative) Environmental checklist . 13
Bibliography . 14
2
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oSIST prEN 16631:2013
prEN 16631:2013 (E)
Foreword
This document (prEN 16631:2013) has been prepared by Technical Committee CEN/TC 286 “Liquefied
petroleum gas equipment and accessories”, the secretariat of which is held by NSAI.
This document is currently submitted to the CEN Enquiry.
3
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oSIST prEN 16631:2013
prEN 16631:2013 (E)
Introduction
Protection of the environment is a key political issue in Europe and elsewhere. Protection of the environment
is taken in a very broad sense. What is meant is the total life cycle aspects of, e.g. a product on the
environment, including expenditure of energy and during all phases from mining of raw materials, fabrication,
packaging, distribution, use, scrapping, recycling of materials, etc.
NOTE Annex B indicates which clauses in this standard address environmental issues.
Provisions have to be restricted to a general guidance. Limit values are specified in national laws. It is
recommended that companies using this standard develop an environmental management policy. For
guidance see ISO 14000 series.
It has been assumed in the drafting of this European Standard that the execution of its provisions is entrusted
to appropriately qualified and experienced people. Where judgements are called for, it has been assumed that
they are made by competent persons who have been trained specifically for the tasks.
4
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oSIST prEN 16631:2013
prEN 16631:2013 (E)
1 Scope
This document specifies the requirements for the retesting, reconditioning and certification of Pressure Relief
Valves for LPG pressure vessels covered under the scope of EN 14129.
This standard applies to retesting and reconditioning of pressure relief valves that are carried out in a
workshop and does not apply to site adjustment of installed pressure relief valves.
Annex a is an informative annex detailing a sampling approach for pressure relief valve requalification which
shall only be used in case of on-site requalification of series produced pressure vessels fitted with series
produced pressure relief valves.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 751-1, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot
water - Part 1: Anaerobic jointing compounds
EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot
water - Part 2: Non-hardening jointing compounds
EN 751-3, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot
water - Part 3: Unsintered PTFE tapes
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
liquefied petroleum gas
LPG
low pressure liquefied gas composed of one or more light hydrocarbons which are assigned to UN 1011, UN
1075, UN 1965, UN 1969 or UN 1978 only and which consists mainly of propane, propene, butane, butane
isomers, butene with traces of other hydrocarbon gases
3.2
pressure relief valve
self-closing valve which automatically, without the assistance of any energy other than that of the vapour
concerned, discharges vapour at a predetermined pressure, and operates with a “pop” action
3.3
competent person
person who by a combination of training, experience and supervision, is able to make objective judgements on
the subject
3.4
resetting
operation of testing and adjusting the start to discharge pressure to the nominal set pressure
5
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oSIST prEN 16631:2013
prEN 16631:2013 (E)
3.5
reconditioning
operation that includes complete dismantling of the valve, evaluation and replacement of components and
reassembly
4 General
All relief valves shall be subjected to inspection prior to reconditioning, resetting or changing the set pressure
Valves that are to be reset shall meet the requirements of clause 7.
Valves that are to be reconditioned shall be subjected to reconditioning in accordance with 6 and pressure
setting in accordance with clause 7
Pressure relief valves that have been stored for more than two years shall have the seal changed and shall
meet the requirements of clause 6
Pressure relief valves that have been stored for more than five years shall meet the requirements of clause 6
and clause 7.
Valves that are to have the set pressure changed shall meet the requirements of clause 8.
5 Materials
5.1 General
Components for reconditioning shall meet the Original Equipment Manufacturer (OEM) specification.
5.2 Lubricants, sealants and adhesives
Where used on operating threads and seals, lubricants, sealants and adhesives shall be compatible with LPG
and not interfere with the operation of the valve. Sealants shall comply with the requirements of EN 751-1,
EN 751-2 or EN 751-3.
5.3 Storage life
5.3.1 Storage life of components
Metallic components do not require a limited shelf life.
Rubber components have a storage life of 7 years with the ability to extend this to 10 years.
Lubricants, sealants and adhesive shall have a shelf life in accordance with the manufacturer's instructions.
5.3.2 Storage life of assembled relief valves
Pressure relief valves may be in storage for up to two years after manufacture. Manufacturers shall ensure
that the operating conditions of the valve shall remain in line with the design standard during this period when
stored in line with the manufacturer's recommendations.
Valves that exceed this storage period of two years shall have the seal replaced and shall be retested to
ensure correct operat
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