SIST EN 13953:2015
(Main)LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG)
LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG)
This European Standard specifies the design, testing and marking requirements for spring loaded pressure relief valves, for use in liquefied petroleum gas (LPG) cylinders. These valves can be either an integral part of a cylinder valve (see EN 13152 and EN 13153) or a separate device. This European Standard does not exclude the use of other designs of pressure relief devices that provide a similar level of safety. Addition of Environmental Annex Update of Terminology Align with ISO/DIS 28622
Flüssiggas-Geräte und Ausrüstungsteile - Sicherheitsventile für ortsbewegliche, wiederbefüllbare Flaschen für Flüssiggas (LPG)
Diese Europäische Norm legt die Anforderungen an die Auslegung, Prüfung und Kennzeichnung von federbelasteten Sicherheitsventilen (PRV, en: pressure relieve valves) für die Verwendung in Flaschen für Flüssiggas (LPG, en: liquefied petroleum gas) fest.
Bei diesen Sicherheitsventilen kann es sich entweder um ein fest eingebautes Teil eines Flaschenventils (siehe EN ISO 14245 [3] und EN ISO 15995 [4]) oder um eine getrennte Einrichtung handeln.
Diese Europäische Norm schließt die Verwendung anderer Arten von Druckentlastungseinrichtungen, welche ein gleichwertiges Sicherheitsniveau sicherstellen, nicht aus.
Équipements et accessoires GPL - Soupapes de sûreté des bouteilles transportables et rechargeables pour gaz de pétrole liquéfiés (GPL)
La présente Norme européenne spécifie les exigences de conception, d'essais et de marquage des soupapes de sécurité à action par ressort, utilisées pour les bouteilles de gaz de pétrole liquéfiés (GPL).
Ces soupapes peuvent faire partie intégrante du robinet de la bouteille (voir l'EN ISO 14245 [3] et l'EN ISO 15995 [4]) ou constituer un dispositif séparé.
La présente Norme européenne n'exclut pas l'utilisation de dispositifs contre les surpressions de conceptions différentes à condition qu'ils garantissent le même niveau de sécurité.
Oprema in pribor za utekočinjeni naftni plin (UNP) - Varnostni ventili za premične, ponovno polnljive jeklenke za utekočinjeni naftni plin (UNP)
Ta evropski standard določa zahteve glede konstruiranja, preskušanja in označevanja varnostnih ventilov za uporabo na jeklenkah z utekočinjenim naftnim plinom (UNP). Ti ventili so lahko sestavni del ventila jeklenke (glej EN 13152 in EN 13153) ali ločen pripomoček. Ta evropski standard ne izključuje uporabe drugih oblik varnostnih pripomočkov, ki zagotavljajo enakovredno stopnjo varnosti. Dodajanje posodobitve okoljskega dodatka z uskladitvijo terminologije s standardom ISO/DIS 28622.
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flüssiggas-Geräte und Ausrüstungsteile - Sicherheitsventile für ortsbewegliche, wiederbefüllbare Flaschen für Flüssiggas (LPG)Équipements et accessoires GPL - Soupapes de sûreté des bouteilles transportables et rechargeables pour gaz de pétrole liquéfiés (GPL)LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG)23.060.40Pressure regulators23.020.30MHNOHQNHPressure vessels, gas cylindersICS:Ta slovenski standard je istoveten z:EN 13953:2015SIST EN 13953:2015en,fr,de01-maj-2015SIST EN 13953:2015SLOVENSKI
STANDARDSIST EN 13953:2003+A1:20071DGRPHãþD
SIST EN 13953:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13953
March 2015 ICS 23.060.40 Supersedes EN 13953:2003+A1:2007English Version
LPG equipment and accessories - Pressure relief valves for transportable refillable cylinders for Liquefied Petroleum Gas (LPG)
Équipements et accessoires GPL - Soupapes de sécurité des bouteilles transportables et rechargeables pour gaz de pétrole liquéfiés (GPL)
Flüssiggas-Geräte und Ausrüstungsteile - Sicherheitsventile für ortsbewegliche, wiederbefüllbare Flaschen für Flüssiggas (LPG) This European Standard was approved by CEN on 29 November 2014.
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 13953:2015 ESIST EN 13953:2015
EN 13953:2015 (E) 2 Contents Page Foreword .3 Introduction .4 1 Scope .5 2 Normative references .5 3 Terms and definitions .5 4 Operating Conditions .7 5 Materials .7 5.1 General .7 5.2 Metallic materials .8 5.3 Non-metallic components .8 5.4 Lubricants, sealants and adhesives .8 6 Design .8 6.1 General .8 6.2 Threads .9 6.3 Springs .9 7 Type Testing and inspection of the design .9 7.1 General .9 7.2 Test requirements . 10 7.3 Dimensional checks . 11 7.4 Hydraulic pressure proof test . 11 7.5 Leak tightness test before ageing . 12 7.6 Start to discharge pressure test . 12 7.7 Discharge capacity test . 12 7.8 Leak tightness tests . 13 7.9 Endurance test . 13 7.10 Visual Inspection . 13 8 Test records . 13 9 Production testing . 13 10 Marking . 14 11 Documentation . 14 Annex A (informative)
Terms used with pressure relief valves . 15 Annex B (normative)
Special low temperature requirements for valves . 16 Annex C (normative)
Sizing of PRVs for LPG cylinders . 17 Annex D (informative)
Production testing. 18 D.1 General . 18 D.2 Setting and leak testing of PRVs . 18 D.3 Batch samples . 18 D.4 Rejection criteria . 18 D.5 Documentation . 18 Bibliography . 19 SIST EN 13953:2015
EN 13953:2015 (E) 3
Foreword This document (EN 13953:2015) 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 September 2015, and conflicting national standards shall be withdrawn at the latest by September 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. This document supersedes EN 13953:2003+A1:2007. — This European Standard has been submitted for reference into the technical annexes of the ADR [1]. NOTE These regulations take precedence over any clause of this European Standard. It is emphasized that ADR is regularly at intervals of two years which may lead to temporary non-compliances with the clauses of this European Standard. The major changes to this revision include: — change to the nominal set pressure; — restructure of Clause 7, Testing and Inspection of the design; — introduction of an endurance test. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. 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 13953:2015
EN 13953:2015 (E) 4 Introduction This European Standard calls for the use of substances and procedures that may be injurious to health and/or the environment if adequate precautions are not taken. It refers only to technical suitability. It does not absolve the user from their legal obligations at any stage. Protection of the environment is a key political issue in Europe and elsewhere around the world. Protection of the environment in this document is understood in a very broad sense. The phrase is used, for example, in relation to the total life-cycle aspects of a product on the environment, including expenditure of energy, and during all phases of its existence, from mining of raw materials, to fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. It is essential that provisions be restricted to a general guidance. Limit values are specified in national laws. It is recommended that manufacturers develop an environmental management policy. For guidance see the EN 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. All pressures are gauge pressures unless otherwise stated. NOTE This European Standard requires measurement of material properties, dimensions and pressures. All such measurements are subject to a degree of uncertainty due to tolerances in measuring equipment etc. It may be beneficial to refer to the leaflet “measurement uncertainty leaflet” SP INFO 2000 27 [2]. SIST EN 13953:2015
EN 13953:2015 (E) 5 1 Scope This European Standard specifies the design, testing and marking requirements for spring loaded pressure relief valves (PRV), for use in liquefied petroleum gas (LPG) cylinders. These PRVs can be either an integral part of a cylinder valve (see EN ISO 14245 [3] and EN ISO 15995 [4]) or a separate device. This European Standard does not exclude the use of other designs of pressure relief devices that provide a similar level of safety. 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 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment 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 837-1:1996, Pressure gauges — Part 1: Bourdon tube pressure gauges — Dimensions, metrology, requirements and testing EN 10270-3, Steel wire for mechanical springs — Part 3: Stainless spring steel wire EN 12164, Copper and copper alloys — Rod for free machining purposes EN 12420, Copper and copper alloys — Forgings EN 13906-1, Cylindrical helical springs made from round wire and bar — Calculation and design — Part 1: Compression springs EN ISO 11114-1, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1: Metallic materials (ISO 11114-1) EN ISO 11114-2, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2: Non-metallic materials (ISO 11114-2) 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 SIST EN 13953:2015
EN 13953:2015 (E) 6 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 nominal set pressure predetermined pressure of the pressure relief valve at which the valve is set to start to discharge 3.4 start to discharge pressure inlet pressure at which the first of a stream of bubbles appears at the outlet of a pressure relief valve through a water seal of not more than 50 mm water column, or other equivalent method 3.5 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 3.6 overpressure pressure increase between the nominal set pressure and the flow rating pressure Note 1 to entry: Usually expressed as a percentage of nominal set pressure. 3.7 reseat pressure inlet pressure at which the sealing element effects a seal with the valve seat after the valve has been subjected to pop action 3.8 flow rating pressure inlet pressure at which the discharge capacity is measured 3.9 discharge capacity capacity at the flow rating pressure of a pressure relief valve expressed in cubic metres per minute of free air at STP 3.10 nominal discharge capacity minimum discharge capacity at the flow rating pressure expressed in cubic metres per minute (m3/min) of free air at STP rounded down to one decimal place 3.11 sealing element non-metallic resilient component which affects a seal by contact with the valve seat SIST EN 13953:2015
EN 13953:2015 (E) 7 3.12 valve seat normally raised area of the valve body on to which the sealing element effects a seal 3.13 cylinder valve primary shutoff device intended for liquid filling and liquid or vapour service fitted to LPG cylinders Note 1 to entry: The valve can also include additional devices e.g. liquid level indicator, excess flow device, pressure relief valve, sediment tube, non-return valve and eduction tube. 3.14 leak tightness resistance to leakage to atmosphere across the valve seat or any other pressure containing component when the valve is closed 3.15 Standard Temperature and Pressure STP 15,6 °C (288,7 K), 1,013 bar absolute (0,1013 MPa absolute) 4 Operating Conditions 4.1 Terms used with PRVs are described graphically in Annex A. 4.2 Valves designed in accordance with this European Standard shall be suitable for: — a minimum operating temperature of −20 °C. Temperatures below this are acceptable for short periods for example, when discharging; — a minimum operating temperature of −40 °C for those parts of Europe where valves are subject to more severe temperature conditions. The material and design shall be shown to be satisfactory for operations under these conditions and shall meet the requirements of Annex B. Where the PRV is integral with a cylinder valve suitable for temperature of −40 °C, the PRV shall also be designed and tested for a temperature of −40 °C; and — a maximum operating temperature of 65 °C. 5 Materials 5.1 General 5.1.1 Materials in contact with LPG shall be physically and chemically compatible with LPG under all normal operating conditions for which the valve is intended and shall meet the requirements for propane and butane in accordance with EN ISO 11114-1 and EN ISO 11114-2. 5.1.2 Materials for valve components shall be selected to give adequate strength in service. Consideration shall be given to all modes of failure including atmospheric corrosion, brass dezincification, stress corrosion, impact or material failure. 5.1.3 Alternative materials to those listed in 5.2 are not precluded, providing they can be shown to be equivalent. 5.1.4 Where PRVs are an integral part of a cylinder valve, the material requirements for th
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