EN ISO 25760:2015
(Main)Gas cylinders - Operational procedures for the safe removal of valves from gas cylinders (ISO 25760:2009)
Gas cylinders - Operational procedures for the safe removal of valves from gas cylinders (ISO 25760:2009)
ISO 25760:2009 is intended for suppliers, operators in testing facilities, operators performing cylinder maintenance and any person authorized to remove valves from gas cylinders. It details procedures for the safe removal of valves from cylinders and includes techniques for the identification of inoperable valves.
Only the risks due to gas and gas mixtures under pressure are addressed; other technical issues relating to the removal of a valve from a cylinder are not covered.
Some specialized equipment and procedures are in use in parts of the gas industry to safely remove cylinder valves from low pressure gas cylinders while under pressure, e.g. liquefied petroleum gas (LPG); these techniques are not included in ISO 25760:2009.
Gasflaschen - Verfahren für das sichere Entfernen von Ventilen aus Gasflaschen (ISO 25760:2009)
Bouteilles à gaz - Modes opératoires de dépose en toute sécurité des robinets de bouteilles à gaz (ISO 25760:2009)
L'ISO 25760:2009 est destinée aux fournisseurs, aux personnes effectuant des contre-essais et aux opérateurs assurant la maintenance des bouteilles, ainsi qu'à toute personne autorisée à procéder à la dépose des robinets des bouteilles à gaz. Elle détaille les méthodes permettant de retirer les robinets des bouteilles en toute sécurité et présente des techniques permettant d'identifier les robinets non manœuvrables.
Ne sont traités que les risques dus au gaz et aux mélanges gazeux sous pression; les autres questions techniques liées à la dépose d'un robinet d'une bouteille ne sont pas abordées.
Des équipements spéciaux et des modes opératoires particuliers sont utilisés dans certains secteurs de l'industrie du gaz pour permettre de déposer en toute sécurité les robinets des bouteilles à gaz à basse pression, par exemple à gaz de pétrole liquéfié (GPL), encore sous pression; l'ISO 25760:2009 ne porte pas sur ces techniques.
Plinske jeklenke - Delovni postopki za varno odstranjevanje ventilov s plinskih jeklenk (ISO 25760:2009)
Ta mednarodni standard je namenjen za dobavitelje, operaterje v preskusnih centrih, vzdrževalce jeklenk in vse osebe, pooblaščene za odstranjevanje ventilov s plinskih jeklenk. Navaja postopke za varno odstranitev ventilov z jeklenk in vključuje tehnike za identifikacijo neuporabnih ventilov. Obravnava samo tveganja zaradi plina in plinskih mešanic pod tlakom; ne zajema drugih tehničnih vprašanj v zvezi z odstranitvijo ventila z jeklenke.
V nekaterih sektorjih industrije plina uporabljajo posebno opremo in postopke, s katerimi varno odstranijo ventile z jeklenk z nizkotlačnimi plini, ki so pod pritiskom, na primer utekočinjeni naftni plin (UNP); te tehnike niso vključene v ta mednarodni standard.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Plinske jeklenke - Delovni postopki za varno odstranjevanje ventilov s plinskih jeklenk (ISO 25760:2009)Gasflaschen - Verfahren für das sichere Entfernen von Ventilen aus Gasflaschen (ISO 25760:2009)Bouteilles à gaz - Modes opératoires de dépose en toute sécurité des robinets de bouteilles à gaz (ISO 25760:2009)Gas cylinders - Operational procedures for the safe removal of valves from gas cylinders (ISO 25760:2009)23.020.30MHNOHQNHPressure vessels, gas cylindersICS:Ta slovenski standard je istoveten z:EN ISO 25760:2015SIST EN ISO 25760:2015en,de01-maj-2015SIST EN ISO 25760:2015SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 25760
February 2015 ICS 23.020.30 English Version
Gas cylinders - Operational procedures for the safe removal of valves from gas cylinders (ISO 25760:2009)
Bouteilles à gaz - Modes opératoires de dépose en toute sécurité des robinets de bouteilles à gaz (ISO 25760:2009) Gasflaschen - Verfahren für das sichere Entfernen von Ventilen aus Gasflaschen (ISO 25760:2009) This European Standard was approved by CEN on 19 January 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 ISO 25760:2015 ESIST EN ISO 25760:2015
Reference numberISO 25760:2009(E)© ISO 2009
INTERNATIONAL STANDARD ISO25760First edition2009-06-15Gas cylinders — Operational procedures for the safe removal of valves from gas cylinders Bouteilles à gaz — Modes opératoires de dépose en toute sécurité des robinets de bouteilles à gaz
ISO 25760:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
ii © ISO 2009 – All rights reserved
ISO 25760:2009(E) © ISO 2009 – All rights reserved iiiContents Page Foreword.iv Introduction.v 1 Scope.1 2 Normative references.1 3 Terms and definitions.1 4 General requirements.3 4.1 Application.3 4.2 Hazards.3 4.3 Operator safety and protection.3 4.4 Operator qualifications.3 4.5 Operator errors.4 4.6 Special valve designs.5 5 Methods for inoperable valves.5 5.1 Summary of methods.5 5.2 Choice of method.6 6 Procedures.6 6.1 Procedures to identify and segregate cylinders with inoperable valves.6 6.2 Standard devalving procedure for treating cylinders with operable valves.7 6.3 Procedures for treating cylinders with inoperable valves.8 7 Damaged valves and cylinders.8 Annex A (informative)
Reasons cylinder valves become inoperable.9 Annex B (informative)
Examples of methods for depressurization of gas cylinders with inoperable valves.11 Bibliography.18
ISO 25760:2009(E) iv © ISO 2009 – All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 25760 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 4, Operational requirements for gas cylinders and is based on EIGA Document 129/05 Pressure receptacles with blocked or inoperable valves. EIGA has granted permission to reproduce excerpts from their document. SIST EN ISO 25760:2015
ISO 25760:2009(E) © ISO 2009 – All rights reserved vIntroduction Cylinders are devalved for many purposes, such as periodic inspection and testing, cylinder cleaning, change of service, replacement of a damaged valve, installation of a new valve, preparation for filling or scrapping. Occasionally, gas cylinder valves can become blocked by corrosion or foreign material or become inoperable due to external or internal damage. It is an essential safety requirement that such valved cylinders be identified and treated with special care as soon as practicable. The operation of removing a valve should only be carried out if the cylinder is made safe with respect to residual gas and pressure. It is recommended that gas suppliers be prepared with both the proper equipment and trained operators for dealing with such valved cylinders. Practical techniques that have been tried and tested over many years within the gas industry are described. Valve removal activities can pose hazards to the life and physical safety of the operator, especially if the cylinder is under pressure. Valves should only be removed after ensuring there is no residual pressure in the cylinder.
INTERNATIONAL STANDARD ISO 25760:2009(E) © ISO 2009 – All rights reserved 1Gas cylinders — Operational procedures for the safe removal of valves from gas cylinders 1 Scope This International Standard is intended for suppliers, operators in testing facilities, operators performing cylinder maintenance and any person authorized to remove valves from gas cylinders. It details procedures for the safe removal of valves from cylinders and includes techniques for the identification of inoperable valves. Only the risks due to gas and gas mixtures under pressure are addressed; other technical issues relating to the removal of a valve from a cylinder are not covered. Some specialized equipment and procedures are in use in parts of the gas industry to safely remove cylinder valves from low pressure gas cylinders while under pressure, e.g. liquefied petroleum gas (LPG); these techniques are not included in this International Standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 11114-1, Transportable gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1: Metallic materials ISO 11114-2, Transportable gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2: Non-metallic materials 3 Terms and definitions For the purposes of this document, the following terms and definitions apply: 3.1 gas cylinder pressure receptacle including individual cylinder, tube, pressure drum or manifold combination of these 3.2 valve device that allows gas to enter or exit a gas cylinder and retains the pressure in the cylinder when in the closed position NOTE This also includes the fittings of cylinders in bundles and battery vehicles. 3.3 inoperable valve valve that is blocked, broken or malfunctioning or that in any way prevents gas from entering or exiting the gas cylinder NOTE See Annex A. SIST EN ISO 25760:2015
ISO 25760:2009(E) 2 © ISO 2009 – All rights reserved 3.4 operable valve device that allows gas to enter or exit a gas cylinder 3.5
residual pressure valve RPV type of valve that prevents the gas cylinder from being totally depressurized by holding back a specific amount of residual pressure NOTE 1 Requirements
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.