BS EN ISO 15615-2013 Gas welding equipment Acetylene manifold systems for welding cutting and allied processes Safety requirements in high-pressure devices《气焊设备 焊接、切割和有关加工工艺用的乙炔气支管.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 15615:2013Gas welding equipment Acetylene manifold systems for welding, cutting and allied processes Safety requirements in high-pressure devicesBS EN ISO 15615:2013 BR

2、ITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 15615:2013. It supersedes BS EN ISO 15615:2002, which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e W E E / 1 8 , G a s w e l d i n g a n d c u t t i n

3、g a p p l i a n c e s .A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013.

4、 Published by BSI Standards Limited 2013.ISBN 978 0 580 68036 6 ICS 25.160.30 Compliance with a British Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2013.Amendments issued sinc

5、e publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 15615 April 2013 ICS 25.160.30 Supersedes EN ISO 15615:2002English Version Gas welding equipment - Acetylene manifold systems for welding, cutting and allied processes - Safety requirements in high-pres

6、sure devices (ISO 15615:2013) Matriel de soudage aux gaz - Centrales de dtente pour la distribution dactylne pour le soudage, le coupage et les techniques connexes - Exigences de scurit pour les dispositifs haute pression (ISO 15615:2013) Gasschweigerte - Acetylenflaschen-Batterieanlagen fr Schweien

7、, Schneiden und verwandte Prozesse - Sicherheitsanforderungen fr Hochdruckeinrichtungen (ISO 15615:2013) This European Standard was approved by CEN on 9 February 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European St

8、andard 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 (Engl

9、ish, 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,

10、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

11、, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No

12、. EN ISO 15615:2013: EBS EN ISO 15615:2013 EN ISO 15615:2013 (E) 3 Foreword This document (EN ISO 15615:2013) has been prepared by Technical Committee ISO/TC 44 “Welding andallied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat of which isheld by DIN. This E

13、uropean Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by October 2013, and conflicting national standards shall be withdrawn atthe latest by October 2013. Attention is drawn to the possibility that some of the el

14、ements of this document may be the subject of patentrights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 15615:2002. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the follo

15、wingcountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, CzechRepublic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norw

16、ay, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 15615:2013 has been approved by CEN as EN ISO 15615:2013 without any modification. BS EN ISO 15615:2013ISO 15615:2013(E) ISO 2013 All rights reserved iiiCon

17、tents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Design 25 Requirements 25.1 General . 25.2 General requirements . 25.3 Additional requirements to be met by specific types of device 36 Type tests . 46.1 General . 46.2 Reference values and accuracy of instruments .

18、 46.3 Test gases . 56.4 Acetylene decomposition test 56.5 Pressure resistance test 66.6 Non-return valve test . 66.7 Endurance test 76.8 Trip pressure test for automatic pressure-actuated shut-off valves 86.9 Internal gas leakage test . 97 Manufacturers instructions . 98 Marking 9Annex A (normative)

19、 Summary of tests 10Bibliography .16BS EN ISO 15615:2013ISO 15615:2013(E)ForewordISO (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 tech

20、nical 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

21、 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 Int

22、ernational 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 ma

23、y be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 15615 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee SC 8, Equipment for gas welding, cutting and allied processes.This second edition can

24、cels and replaces the first edition (ISO 15615:2002), which has been technically revised.Requests for official interpretations of any aspect of this International Standard should be directed to the Secretariat of ISO/TC 44/SC 8 via your national standards body. A complete listing of these bodies can

25、 be found at www.iso.org.iv ISO 2013 All rights reservedBS EN ISO 15615:2013INTERNATIONAL STANDARD ISO 15615:2013(E)Gas welding equipment Acetylene manifold systems for welding, cutting and allied processes Safety requirements in high-pressure devices1 ScopeThis International Standard establishes th

26、e general specifications, requirements and tests for devices located on the high-pressure side of acetylene manifold systems as defined in ISO 14114. It does not cover the high-pressure piping, flexible hoses and the regulator.NOTE The terms “upstream” and “downstream” refer to the normal direction

27、of gas flow in the device.2 Normative referencesThe 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.IS

28、O 2503:2009, Gas welding equipment Pressure regulators and pressure regulators with flow-metering devices for gas cylinders used in welding, cutting and allied processes up to 300 bar (30 MPa)ISO 9090, Gas tightness of equipment for gas welding and allied processesISO 9539, Gas welding equipment Mat

29、erials for equipment used in gas welding, cutting and allied processesISO 10297, Gas cylinders Cylinder valves Specification and type testing3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1non-return valvedevice which prevents passage of gas in

30、the direction opposite to flowISO 15296:20043.2manual quick-acting shut-off valvemanually activated device to quickly stop the gas flowISO 15296:20043.3automatic quick-acting shut-off deviceself-acting device which closes quickly, e.g. when triggered by an acetylene explosion in the high-pressure ma

31、nifold pipeworkISO 15296:20043.4remotely actuated shut-off valvequick-acting shut-off valve which quickly stops the gas flow when remotely triggered ISO 2013 All rights reserved 1BS EN ISO 15615:2013ISO 15615:2013(E)3.5automatic pressure-actuated shut-off valvedevice which automatically stops the ga

32、s supply to the regulator when the downstream pressure rises above the maximum operating pressure3.6three-way valvedevice which allows gas flow from one side of the high-pressure manifold to enter the regulator while isolating flow from the second sideNote 1 to entry: Its position can be reversed so

33、 that gas flows from the second side while the first side is isolated. It prevents simultaneous flow from both sides.3.7stop valvedevice to prevent, when closed, the flow of gas3.8multifunctional safety devicedevice which incorporates two or more of the safety functionsISO 15296:20043.9pressure gaug

34、edevice which shows the actual pressure of the assembly (digital or analogue readouts) (e.g. used in the high-pressure line of manifold systems or in pressure regulators for manifold systems.)4 DesignComponents within the devices should be designed to remain at the same electrostatic potential as th

35、e body of the device during operation. All metal components in contact with gas should be electrically continuous to prevent static electricity discharges.5 Requirements5.1 GeneralThe general requirements (see 5.2) apply to all the devices defined in Clause 3. The multifunctional safety devices shal

36、l meet the general and additional requirements corresponding to each function.5.2 General requirements5.2.1 MaterialsMaterials used for devices shall be in accordance with ISO 9539.5.2.2 External gas tightnessThe general requirements on external gas tightness shall be in accordance with ISO 9090 at

37、all times, before and after the tests.2 ISO 2013 All rights reservedBS EN ISO 15615:2013ISO 15615:2013(E)5.2.3 Internal gas tightnessWhere internal gas tightness is required in this International Standard, the leakage rate shall not exceed 50 cm3/h for devices with a connection internal bore (diamet

38、er) less than 11 mm, or less than 0,41d2for larger diameters. See 6.9 for test details.NOTE The expression 0,41d2gives the value of the flow in cm3/h when d is the internal bore (diameter), in mm, of the largest connection in the device.5.2.4 Internal gas tightness after decomposition testWhere inte

39、rnal gas tightness is required after acetylene decomposition, the leakage rate shall not exceed 50 l/h. See 6.9 for test details.5.2.5 Pressure resistanceThe housings of the devices shall withstand a pressure of 31,5 MPa (315 bar) for 5 min without any observed leakage. After pressurization, there s

40、hall be no visible permanent deformation. See 6.5 for test details.5.2.6 Acetylene decompositionAfter the device has been tested with decomposition at 2,5 MPa initial pressure in accordance with 6.4, there shall be no visible permanent deformation of the device. No escape of gas shall occur during t

41、he test. Destruction of inner parts is permitted.5.3 Additional requirements to be met by specific types of device5.3.1 Non-return valveNon-return valves shall not allow the reverse flow of gas greater than 150 cm3/h (0,15 l/h) when tested in accordance with 6.6.1 and 6.6.2, both before and after th

42、e 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 decomposition test.5.3.2 Manual quick-acting shut-off valveThe decomposition test shall be carried out in the open position. Manual quick-acting shut-off valves

43、 shall meet the requirements of 5.2.3 before and after the endurance test (see 6.7). In the case of turn-acting valves, they shall not require more than half of a turn to close. See 6.7 for endurance test details. For valves with handwheels, the closing torque applied for the decomposition test shal

44、l be the endurance test torque as defined in the endurance test for cylinder valves in ISO 10297.5.3.3 Automatic quick-acting shut-off deviceAutomatic quick-acting shut-off devices shall be triggered by an acetylene decomposition at 0,6 MPa (6 bar) and 2,5 MPa (25 bar). After tripping by acetylene d

45、ecomposition, the internal gas leakage shall meet the requirements of 5.2.4.5.3.4 Remotely actuated shut-off valveRemotely actuated shut-off valves shall be triggered by an acetylene decomposition at 0,6 MPa (6 bar) and 2,5 MPa (25 bar). Remotely actuated shut-off valves shall meet the requirements

46、of 5.2.3 before the decomposition test (see 6.4) and after the endurance test. See 6.7 for endurance test details. ISO 2013 All rights reserved 3BS EN ISO 15615:2013ISO 15615:2013(E)5.3.5 Automatic pressure-actuated shut-off valveAutomatic pressure-actuated shut-off valves shall be triggered (stop g

47、as flow on high-pressure side) at a pressure on the low-pressure signal port between 0,16 MPa and 0,20 MPa (1,6 bar and 2,0 bar) at both 0,1 MPa and 2,5 MPa (1 bar and 25 bar) on the high-pressure side. When triggered, the internal gas leakage shall meet the requirements of 5.2.3. See 6.8.2.1 (test

48、1) and 6.8.2.2 (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 the low-pressure signal port for 168 h. See 6.8.2.3 (test 3) for details.Once actuated (closed), it shall not be possible for the valve to reset to an open

49、 condition without manual intervention.In addition to the 31,5 MPa (315 bar) pressure resistance test on high-pressure chambers in 5.2.5, the internal chambers of the low-pressure signal port shall withstand a pressure of 6,0 MPa (60 bar) for 5 min. During pressurization, there shall be no visible permanent deformation or leakage to the atmosphere.Automatic pressure shut-off valves shall meet the requirements of 5.2.3 before the decomposition test (see 6.4) and after the endurance test (see 6.7). During the decompositi