SIST EN ISO 15615:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.,62Gasschweißgeräte - Acetylenflaschen-Batterieanlagen für Schweißen, Schneiden und verwandte Prozesse - Sicherheitsanforderungen für Hochdruckeinrichtungen (ISO 15615:2002)Matériel de soudage aux gaz - Centrales de détente pour la distribution d'acétylene pour le soudage, le coupage et les techniques connexes - Exigences de sécurité pour les dispositifs haute pression (ISO 15615:2002)Gas welding equipment - Acetylene manifold systems for welding, cutting and allied processes - Safety requirements in high-pressure devices (ISO 15615:2002)25.160.30Varilna opremaWelding equipmentICS:Ta slovenski standard je istoveten z:EN ISO 15615:2002SIST EN ISO 15615:2003en01-maj-2003SIST EN ISO 15615:2003SLOVENSKI
STANDARD



SIST EN ISO 15615:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 15615April 2002ICS 23.060.40; 25.160.30English versionGas welding equipment - Acetylene manifold systems forwelding, cutting and allied processes - Safety requirements inhigh-pressure devices (ISO 15615:2002)Matériel de soudage aux gaz - Centrales de détente pour ladistribution d'acétylène pour le soudage, le coupage et lestechniques connexes - Exigences de sécurité pour lesdispositifs haute pression (ISO 15615:2002)Gasschweißgeräte - Acetylenflaschen-Batterieanlagen fürSchweißen, Schneiden und verwandte Prozesse -Sicherheitsanforderungen für Hochdruckeinrichtungen (ISO15615:2002)This European Standard was approved by CEN on 30 December 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 15615:2002 ESIST EN ISO 15615:2003



EN ISO 15615:2002 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.44Design and materials.54.1Design.54.2Materials.55Requirements.55.1General.55.2General requirements.55.3Additional requirements to be met by specific types of devices.66Type tests.76.1General.76.2Reference values and accuracy of instruments.76.3Test gases.76.4Acetylene decomposition test.76.5Pressure resistance test.106.6Non-return valve test.106.7Endurance test.116.8Trip pressure test for automatic pressure actuated shut-off valve.116.9Internal gas leakage test.126.10Trip test for automatic quick acting shut-off device.127Manufacturer's instructions.138Marking.13Annex A (normative)
Summary of tests.14SIST EN ISO 15615:2003



EN ISO 15615:2002 (E)3ForewordThis document (EN ISO 15615:2002) has been prepared by Technical Committee CEN/TC 121 "Welding", the sec-retariat of which is held by DS, in collaboration with Technical Committee ISO/TC 44 "Welding and allied proc-esses".This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by October 2002, and conflicting national standards shall be withdrawn at the latestby October 2002.Annex A is normative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard : Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,Sweden, Switzerland and the United Kingdom.SIST EN ISO 15615:2003



EN ISO 15615:2002 (E)41 ScopeThis standard lays down the general specifications, requirements and tests of devices located on the high-pressureside of acetylene manifold systems as defined in EN ISO 14114. The standard does not cover the high-pressurepiping, flexible hoses and the regulator.NOTEThe terms "upstream" and "downstream" refer to the normal direction of gas flow in the device.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 849, Transportable gas cylinders — Cylinder valves — Specification and type testing.EN 13622:2001, Gas welding equipment — Terminology — Terms used for gas welding equipment.EN 29090, Gas tightness of equipment for gas welding and allied processes (ISO 9090:1989).EN 29539, Materials for equipment used in gas welding, cutting and allied processes (ISO 9539:1988).EN ISO 2503:1998, Gas welding equipment — Pressure regulators for gas cylinders used in welding, cutting andallied processes up to 300 bar (ISO 2503:1998).EN ISO 7291, Gas welding equipment — Pressure regulators for manifold systems used in welding, cutting andallied processes up to 300 bar (ISO 7291:1999).EN ISO 14114, Gas welding equipment — Acetylene manifold systems for welding, cutting and allied processes —General requirements (ISO 14114:1999).3 Terms and definitionsFor the purposes of this European Standard the following terms and definitions apply.3.1non-return valvedevice which prevents passage of gas in the direction opposite to flow[EN 13622:2001]3.2manual quick acting shut-off valvemanually activated device to quickly stop the gas flow[EN 13622:2001]3.3automatic quick acting shut-off deviceself-acting device which closes quickly e.g. when triggered by an acetylene explosion in the high pressure manifoldpipework[EN 13622:2001]3.4remote actuated shut-off valvequick acting shut-off valve which quickly stops the gas flow when remotely triggeredSIST EN ISO 15615:2003



EN ISO 15615:2002 (E)53.5automatic pressure actuated shut-off valvedevice which automatically stops the gas supply to the regulator when the downstream pressure rises above themaximum operating pressure3.6three way valvedevice which allows gas flow from one side of the high pressure manifold to enter the regulator while isolating flowfrom the second side. Its position can be reversed so that gas flows from the second side while the first side is iso-lated. It prevents simultaneous flow from both sides3.7stop valvedevice to prevent, when closed, the flow of gas3.8multifunctional safety devicedevice which incorporates two or more of the safety functions[EN 13622:2001]4 Design and materials4.1 DesignComponents within the devices should be designed to remain at the same electrostatic potential as the body of thedevice during operation. All metal components in contact with gas should be electrically continuous to prevent staticelectricity discharges.4.2 MaterialsMaterials used for devices shall be in accordance with EN 29539.5 Requirements5.1 GeneralThe general requirements (see 5.2) apply to all the devices defined in clause 3. The multifunctional safety devicesshall meet the general and additional requirements corresponding to each function.5.2 General requirements5.2.1External gas tightnessThe general requirements on external gas tightness before acetylene decomposition shall be in accordance withEN 29090.5.2.2Internal gas tightness before decomposition testWhere internal gas tightness is required in this standard the leakage rate shall not exceed 50 cm3/h for devices witha connection internal bore (diameter) less than 11 mm or 0,41 d2 for larger diameters. See 6.9 for test details.The value 0,41 d2 shall be the flow in cm3/h where d is the internal bore (diameter) in mm of the largest connectionof the device.SIST EN ISO 15615:2003



EN ISO 15615:2002 (E)65.2.3Internal gas tightness after decomposition testWhere internal gas tightness is required after acetylene decomposition the leakage rate shall not exceed 50 l/h.See 6.9 for test details.5.2.4Pressure resistanceThe housings of the devices shall withstand a pressure of 31,5 MPa (315 bar) for 5 min, without any leakage ob-servation. After pressurisation there shall be no permanent deformation. See 6.5 for test details.5.2.5Acetylene decompositionAfter the device has been tested in accordance with 6.4, there shall be no visible permanent deformation of thedevice. No escape of gas shall occur during the test.5.3 Additional requirements to be met by specific types of devices5.3.1Non-return valveNon-return valves shall not allow the reverse flow of gas greater than 150 cm3/h (0,15 l/h) when tested in accordan-ce with 6.6.1 and 6.6.2, both before and after the 2 000 cycle fatigue test (see 6.6.3).This requirement does not apply to the non-return valve after it has been subjected to the acetylene decompositiontest.5.3.2Manual quick acting shut-off valveManual quick acting shut-off valves shall meet the requirements of 5.2.2 and 5.2.3 before and after a 500 cycletest. In the case of turn acting valves, they shall not require more than half of a turn to close. See 6.7 for endurancetest details.5.3.3Automatic quick acting shut-off deviceAutomatic quick acting shut-off devices shall be triggered by an acetylene decomposition at 0,6 MPa (6 bar) and at2,5 MPa (25 bar). After tripping the internal gas leakage shall meet the requirement of 5.2.3. See 6.10 for test de-tails.5.3.4Remote actuated shut-off valveThe remote actuated shut-off valves, when in the closed condition, shall meet the internal gas leakage require-ments of 5.2.2 and 5.2.3 before and after the acetylene decomposition test (see 6.4) as well as before and after a500 cycle endurance test. See 6.7 for endurance test details.5.3.5Automatic pressure actuated shut-off valveAutomatic pressure actuated shut-off valves shall be triggered (stop gas flow on high pressure side) at a pressureon the low pressure signal port between 0,16 MPa to 0,20 MPa (1,6 bar to 2,0 bar) at both 0,1 MPa and 2,5 MPa(1 bar and 25 bar) inlet pressures. When triggered the internal gas leakage shall meet the requirement of 5.2.2.See 6.8.2.1 for test 1 and 6.8.2.2 for test 2 for details.The valve shall not be triggered when a pressure of 0,145 MPa to 0,150 MPa (1,45 bar to 1,50 bar) is held on thelow pressure signal port for 168 h. See 6.8.2.3 for test 3 for details.Once actuated (closed) it shall not be possible for the valve to reset to an open condition without manual inter-vention.In addition to the 31,5 MPa (315 bar) pressure test on high pressure chambers in 5.2.4 the internal chambers of thelow pressure signal port shall withstand a pressure of 6,0 MPa (60 bar) for 5 min. During pressurisation, there shallbe no permanent deformation or leakage to the atmosphere.SIST EN ISO 15615:2003



EN ISO 15615:2002 (E)7Automatic pressure actuated shut-off valves shall meet the requirements for internal gas tightness, external gastightness and pressure actuation both before and after the acetylene decomposition test (see 6.4) as well as beforeand after a 500 cycle endurance test. See 6.7 for endurance test details.5.3.6Three way valveThree way valves, when closed, shall meet requirements for internal gas tightness of 5.2.2 and 5.2.3 before andafter the acetylene decomposition test (see 6.4) as well as before and after a 500 cycle endurance test. See 6.7 forendurance test details.During the acetylene decomposition test the three way valve shall prevent the decomposition passing down streamof the valve.5.3.7Stop valveStop valves, when closed, shall meet the internal gas leakage requirement of 5.2.2 and 5.2.3 before and after theacetylene decomposition test (see 6.4) and after a 500 cycle endurance test. See 6.7 for endurance test details.During the acetylene decomposition test the stop valve shall prevent the decomposition passing down stream ofthe valve.6 Type tests6.1 GeneralThe type test methods of clause 6 are to be applied to sample devices to be tested for compliance with this stan-dard. Tests shall be carried out on new devices.6.2 Reference values and accuracy of instrumentsReference values and accuracy of instruments are as follows: flow-measuring equipment: ± 3 % of maximum reading; pressure-measuring equipment: ± 1 % of maximum reading.All pressures are provided in megapascal
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