EN 1326-1996 en Gas Welding Equipment - Small Kits for Gas Brazing and Welding《气焊设备 气体钎焊和定位焊接用小型设备》.pdf

1、STD-BSI BS EN L32b-ENGL L77b Lb24bb7 0583544 37T BRITISH STANDARD Gas welding equipment - Small kits for gas brazing and welding * * m The European Standard EN 1326 : 1996 has the status of a British Standard ICs 26.160.30 BS EN 1326 : 1996 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY CO

2、PYRIGHT LAW STD*BSI BS EN 132b-ENGL L77b Lb24bb7 0583545 20b W AmdNo. Date BS EN 1326 : 1996 Text affected Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee WEW18, Gas welding and cutting appliances, upon which the followin

3、g bodies were represented: Britkh Compressed Gases Association British Railways Board Consumer Policy Committee of BSI Department of li-ade and Industry (Consumer Safety Unit, CA Division) Health and Safety Executive LP Gas Association Railway Industry Association South Bank University Welding Manuf

4、acturem Association (BEAMA Ltd) This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1996 O BSI 1996 The foliowing BSI references relate to the work on this stand

5、ard Committee reference wEW18 Draft for comment 94/702582 DC I I ISBN O 680 26268 6 BS EN 1326 : 1996 Contents Committees responsible inside front cover National foreword u Foreword 2 Text of EN 1326 3 * * m O BSI 1996 i STD-BSI BS EN L32b-ENGL L77b Lb29bb7 0583597 O87 BS EN 1326 : 1996 National for

6、eword This British Standard has been prepared by Technicai Committee WEED8 and is the English language veision of EN 1326 : 1996 Gas welding equipment - Smau kits for gas brazing and welding, published by the European Committee for Standardization (CEN). EN 1326 : 1996 was produced as a result of in

7、tedonal discussion in which the UK took an active part. BS EN 1326 : 1996 supersedes BS 6942 : Part 1 : 1988 which is withdrawn. It is assumed in the drafting of this British Standard that the execution of its proVisions is entrusted to appropriately qualified and experienced people. Cross-reference

8、s EN 559 : 1994 EN 562 : 1994 EN585:1994 EN 730 : 1995 Publication referred to Corresponding British Standard EN 417 : 1992 BS EN 417 : 1992 Non-wfwle metallic gas cartridges for liquefied petroleum gases, with or without a valve, for use with portable appliances - Constwtwn, inspection, testing and

9、rnarlcing BS EN 559 : 1994 Gas welding equipment - Rubber hoses for welding, cutting and allied processes BS EN 562 : 1995 Gas welding equipment - Prmm gauges used in welding, cutting and allied pmcessa regulators for gas cylindem used in welding, cutting and dzed processes up to 200 bar used in gas

10、 welding, cutting and allied processes, safety devices for fuel gases and oxygen or cmprmed air - General spME EUROPEN3 EUROP-CXE NORM May 1996 Descriptors: Gas weling, brazing, welding equipment, definitions, equipment specification, utdization, maintenance, safety, instructions, tests, leaktightne

11、ss, mechanical strength, marking English version Gas weldin$ equipment - Small kits for gas brazing and welding Matriel de soudage aux gaz - Petits ensembles pour le brassage et le soudage aux gaz GasschweSgerate - Kleingerate zum Gasiten und Schwei3en This European Standard was approved by CEN on 1

12、9!X-511. CEN members are bound to comply with the CEN/CENELEC Internal Regdalions which stipuate the conditions for giving this European Standard the status of a national standaxd without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtain

13、ed on application to the Central Secretariat 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 responsibiity of a CEN member into its own language and notified to the CenW Secretaria

14、t has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy) Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for

15、Standardization Comit Europen de Normalisation Europaisches Komitee fiir Normung Central Secretariat: rue de Stassart 36, B-1060 Brussels O 1996 Au rights of reproduction and communication in any form and by any meam reserved in all countries to CEN and its memberc. Ref. No. EN 1326 : 1996 E STD-BSI

16、 BS EN L32b-ENGL L79b D Lb24bb7 0583547 751 D Page 2 EN 1326 : 1996 Foreword This European standard has been prepared by Technical Committee CENPTC 121, Welding, of which the secretariat is held by DS. This European Standard shall be given the status of a national standard, either by publication of

17、an identical text or by endorsement, at the latest by November 1996, and conflicting nationai standards shall be withdrawn at the latest by November 1996. According to the CENXENELEC Internai Regulations, the nationai standards organizations of the foiowing countries are bound to implement this Euro

18、pean Standard: Austria, Belgium, Denmark, Finland, France, Germanx Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norwax Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Scope 3 Normative references 3 Dennitions 3 Design 4 MWking 6 Instructions for use and mainte

19、nance 6 Tests 7 O BSI 1996 1 scope “his European Standard specifies safety requirements for the construction of small kits for brazing, soldering and welding for non-professional use. This standard is applicable to appliances whose welding equipment is completely set up in the factory and which use

20、a liquefied gas or gas mixture as combustible gas and compresed oxygen, air or - - appliances working with an oxygen generator; - appliances working by electsolysis. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These no

21、rmative references are cited at the appropriate places in the text and the publications are listed herear. For dated references, subsequent amendments to or revision of any of these publications apply to this European Standard oniy when incorporated in it by amendment or revision. For undated refere

22、nces the latest edition of the publication referred to applies. EN 417 prEN 521 EN 559 EN 562 EN 585 : 1994 EN 730 : 1995 Non-refWe metallic gas cartridges for liquefied petroleum gases, with or without a valve, for use with pmtable appliances - Construction, inspection, testing and marking Dedicate

23、d liquefied petroleum gas appliances - Portable up-liunces operating at vapour pressure from liquefzed petrohm gas containers Gas welding equipment - Rubber hosas for welding, cutting and died processes Gas welding equipment - Pressure gauges used in welding, cutting and - the gas containers; - the

24、carrying construction; - the jnstructions; - the eye protecting equipment; - the accessories. 3.2 welding equipment Set of devices (connechg devices, gas controls, reguiators, safety devices, hoses, blowpipe, etc.) assembled in the factory NOTE. According to the design of the welding equipment some

25、devices can be unnecem. 3.3 non-refillable containers Containers designed to be disposed of when empty, e.g.: - pierceable cartridges; - cartridges with dvq - non-refaable cylinders. 3.4 connecting device A part of the welding equipment designed to provide the connection to the gas container. NOTE.

26、It can be separate or integral with another device of the welding equipment. 3.6 shut-off device A device which controls the flow of the gas to the welding equipment; it can be fitted to the container (cylinder valve or tap) or to the welding equipment. O BSI 19% STD-BSI BS EN L32b-ENGL L79b Lb29bbS

27、 0583551 50T Page 4 EN 1326 : 1996 3.6 gas cylinder valve A part, integrai with a container, provided with a threaded outlet and a handwheel which opens and closes the gas. 3.7 pressure regulator A part which allows reduction of the pressure of the gas flowing out of the container; it can be dustabl

28、e or prmusted, integral with another device or Separate. 3.8 safety device A device which, when correctly used and placed, prevents the damage resulting from misuse or malfunction of the blowpipe or associated equipment. It can be: - a non-return valve, which prevents the passage of the gas in the d

29、irection opposite to normal flow; or - a flame arrestor which quenches a flame front (flashback). The two functions can be associated in a single device. 3.9 carrying construction A stnicture which allows containers, welding equipment and accessories to be Camed and that secures the gas containers i

30、n a safe position. 3.10 adjustable blowpipe A blowpipe fitted with a valve on each gas line so as to control and dust the fiame. NOTE. A blowpipe without a valve is said to be non-adJustable. , 4 Design 4.1 General Ail parts of the appliance shall be free of sharp cornem and edges which could give r

31、ise to iqlury during normal assembling, use and maintenance. Parts and devices of the welduig equipment which are integrai to its safe operation shall be fitted securely so as to avoid loosening in normal use. Compliance shall be checked during the testing. Welding equipment including the connecting

32、 device shall be tight when tested according to 7.2 both before and after the endurance test described in 7.3. The connection of different parts of the appliance by the user shall be uncomplicated and safe. Respective position of the parts shall be obvious. Necessary tools and instructions for a saf

33、e assembly shall be supplied with the appliance. 4.2 Materiais Mahiais shall comply with requirements specified in EN 29539. 4.3 Gas containers 4.3.1 Non-rytllable gas containers Pierceable cartridges and cartsidges with valves shall comply with the requirements of EN 417. Cartridges for compressed

34、oxygen should comply with the natiod standards or regulations. Non-reliable cylinders should comply with national standards or reguhons. 4.3.2 Refillable containers Refillable containers should comply with the requirements of national standards or regulations. 4.4 Connecting device The connecting de

35、vice shall be designed to fit the container specified by the manufacturer. It shall not be possible to interchange the fuel gas and oxygen containers. The devices for cartridges for fuel gas shall comply with the relevant requirements of EN 521. 4.6 Shut-off device It shall be possible to shut off t

36、he gas supply quickly at each gas container without disconnecting the gas container. The device can be a separate part (tap) or integral with another part (regulator, for example). If the shut-off device is not an integral part of the container it shall be clearly marked with the gas it controls. if

37、 the device operates by turning, the closing direction shall be clockwise and marked in a durable and visible fashion. If the device has a fixed OF“ position it shall also be marked. It shall not be possible to unintentionally remove the part of the device which opens and closes the gas flow. The bo

38、dy of the device shall show no permanent deformation when tested according to a) of 7.4. When the shut-off device is a cylinder valve (or tap) it shall comply with the requirements of EN 849. 4.6 Pressure regulator 4.6.1 General The circuit of the gas shal be provided with a device reducing the pres

39、sure when the maximum senrice pressure of the container (pressure at 50 OC) exceeds the maximum working pressure of the hose or the blowpipe. The device shall be so designed, that it cannot be set to give a pressure exceeding the ma.xjmum working pressure of the hose or the blowpipe. O BSI 1996 STD-

40、BSI BS EN L32b-ENGL L77b Lb24bb7 0583552 4i-lb W 4.6.2 Gas containers with cylin if fimd it shall comply with requirements for gauges for preset pressure regulatois (see 4.6.2). 4.7 Safety devices The appliance shall be protected agains bacllow and flashback. Flame arrester can be submitted only to

41、a static mixture test (see 6.6.2 of EN 730 : 1995). Saety devices which are not integral with other parts of the appliance shall comply with EN 730. Devices which are integral with part of the appliance shall comply with 6.2.2 and 6.2.3 of EN 730 : 1995, as appropriate. In addition, pressure resista

42、nce and tighness shall be checked during the testing of the part which includes the safety device. Page 6 EN 1326 : 1996 4.8 Hose and hose coupling nipple Hoses shall comply with EN 559 or with EN 1327. Inividual lengths of hose shall not exceed 3 m. Welding equipment shall be supplied with hoses in

43、 a fully assembled condition. The tensile strength of the connections between hoses and hose coupling nipples shail be in accordance with 7.6. After testing according to 7.6, the welding equipment shall remain gas tight during subsequent testing according to 7.2. 4.9 Blowpipe The appliance can be eq

44、uipped with either an austable or non-a - Valve design if ans - resistance to sustained backfire (by overheating and occlusion). Ming for backfire by occlusion is not required for nozzles having a rated flow less than 15 bh of combustible gas measured at the normal workmg conditions specified by the

45、 manufactum If an appliance has a non-dustable blowpipe, it shall be possible to obtain an adequak neutral flame. The assembly and disassembly of blowpipe attachments shal be easily carried out with the small kit tools provided Each valve of an austable blowpipe shall be clearly marked with the gas

46、it controls. 4.10 Carriage and stability The appliance shall be provided with a carrying structure of a design suitable for the storage, transportation and use of the gas containers and equipment. Liquefied gas containers shail be held in such a manner in the carrying structure, that liquid cannot b

47、e drawn off. The canying structure shall not permit the accumulation of the gas from accidental leakage. Constitutive materials (except for those concerning wheels, if necesary) shall be resistant to the flame when tested according to 7.8. When tested according to 7.7, the qpliance shall not tip ove

48、r. 4.11 Eye protecting equipment Eye protecting equipment shall be supplied suitable for the intended applications of the kit. O BSI 1996 STD-BSI BS EN 132b-ENGL 177b m 1b24bb7 0583553 382 m Page 6 EN 1326 : 1996 5 Marking 6.1 Gas controls The gas shall be identified and clearly marked on the gas co

49、ntrols by either -a letter -0 for oxygen; - D for compressed combustible gases; or - a colour - Blue for oxygen and -Black for - references to the type of containers to be exclusively used; - instructions to connect or change the containers in a flame or ignition-free atmosphere, far removed from other persons; - not to use grease or oil on parts in contact with oxygen; - that goggles are to be worn when the appliance is operating; - how to stop the appliance safely 6.3 Durability All markings shall be durable, compliance shall be checked by rubb