BS EN ISO 25980-2014 Health and safety in welding and allied processes Transparent welding curtains strips and screens for arc welding processes《焊接和相关工艺的健康与安全 电弧焊工艺所用透明焊接帘 条和屏》.pdf

1、BSI Standards PublicationBS EN ISO 25980:2014Health and safety in weldingand allied processes Transparent welding curtains,strips and screens for arcwelding processesBS EN ISO 25980:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO25980:2014. It supersede

2、s BS EN 1598:2011 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/40, Health and safety in welding.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the

3、necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 80490 8ICS 13.100; 13.340.99; 25.160.10Compliance with a British Standard cannot confer immunity fromlegal obligations.Thi

4、s British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2014.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 25980 October 2014 ICS 13.100; 25.160.10 Supersedes EN 1598:2011English

5、Version Health and safety in welding and allied processes - Transparent welding curtains, strips and screens for arc welding processes (ISO 25980:2014) Hygine et scurit en soudage et techniques connexes - Rideaux, lanires et crans transparents pour les procds de soudage larc (ISO 25980:2014) Arbeits

6、- und Gesundheitsschutz beim Schweien und bei verwandten Verfahren - Durchsichtige Schweivorhnge, -streifen und -abschirmungen fr Lichtbogenschweiprozesse (ISO 25980:2014) This European Standard was approved by CEN on 23 August 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regu

7、lations 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 memb

8、er. 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. C

9、EN 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,

10、 Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in

11、any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 25980:2014 EBS EN ISO 25980:2014EN ISO 25980:2014 (E) 3 Foreword This document (EN ISO 25980:2014) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical

12、Committee CEN/TC 121 “Welding” the secretariat of which is held by DIN. 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 April 2015, and conflicting national standards shall be withdrawn at the lat

13、est by April 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 1598:2011. According to the CEN-CENELEC

14、 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, Icela

15、nd, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 25980:2014 has been approved by CEN as EN ISO 25980:2014 without any modificatio

16、n. BS EN ISO 25980:2014ISO 25980:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Requirements 14.1 General . 14.2 Transmittance 24.3 Reflectance . 34.4 UV-Stability . 34.5 Resistance to ignition 34.6 Eyelet strength 55 M

17、arking 66 Information for users 7Bibliography 8BS EN ISO 25980:2014ISO 25980:2014(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 throu

18、gh 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 collabora

19、tes closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval cr

20、iteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject

21、 of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade n

22、ame used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Techni

23、cal Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee SC 9, Health and safety.iv ISO 2014 All rights reservedBS EN ISO 25980:2014INTERNATIONAL STANDARD ISO 25980:2014

24、(E)Health and safety in welding and allied processes Transparent welding curtains, strips and screens for arc welding processes1 ScopeThis International Standard specifies safety requirements for transparent welding curtains, strips, and screens to be used for shielding of work places from their sur

25、roundings where arc welding processes are used. They are designed to protect people who are not involved in the welding process from hazardous radiant emissions from welding arcs and spatter.Welding curtains, strips, and screens specified in this International Standard are not intended to replace we

26、lding filters. For intentional viewing of welding arcs other means of protection are used.This International Standard is not applicable for welding processes where laser radiation is used.NOTE Darker welding curtains or screens are advisable for mutual separation of adjacent work places for reasons

27、of comfort.2 Normative referencesThe 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

28、 any amendments) applies.ISO 4007:2012, Personal protective equipment Eye and face protection VocabularyISO 11664-2:2007, Colorimetry Part 2: CIE standard illuminantsEN 167, Personal eye-protection Optical test methodsEN 168, Personal eye-protection Non-optical test methods3 Terms and definitionsFor

29、 the purposes of this document, the terms and definitions given in ISO 4007 and the following apply.3.1transparentcharacteristic of welding curtains, strips, and screens that admit visibility to the working place without implying to be glass clear3.2hazard levelGdimensionless number representing the

30、 risk exposition to visible and near IR radiations4 Requirements4.1 GeneralFor transparent welding curtains, strips, and screens consisting of different materials, all requirements for the whole material combination shall be met. ISO 2014 All rights reserved 1BS EN ISO 25980:2014ISO 25980:2014(E)For

31、 optical test methods, see EN 167.After preparation, the test specimens shall be maintained at a temperature of (23 5) C and relative humidity of (65 10) % for a minimum of 16 h before testing.4.2 TransmittanceThe luminous transmittance, r, based on the spectral distribution of CIE standard illumina

32、nt A according to ISO 4007 shall be greater than 1 106scattered light diffused within 1 to the direction of the incident radiation shall be included in the measurement.The spectral transmittance in the wavelength range between 210 nm and 313 nm shall be less than 2 105, in the wavelength range betwe

33、en 313 nm and 400 nm less than 3 102.In the wavelength range from 400 nm to 1 400 nm the hazard level G shall be less than 1.The hazard level is defined byGCGiii=()()=14001400 (1)whereiis the individual wavelength, expressed in nanometers (nm); (i) is the spectral transmittance of the wavelength i;

34、is the wavelength step for the summation, expressed in nanometers (nm);G(i) is the spectral risk factor at the wavelength i;C is a constant equal to 1 000 nm.The values of the spectral individual risk factors are given by Formula (2):gGDii() ()= (2)whereg(i) is the spectral individual risk factor at

35、 the wavelength i, expressed in nanometers (nm)G(i) is the spectral risk factor at the wavelength i;D is a constant equal to 1 103nm.These values are given for = 10 nm in Table 1. If a larger step width is used (e.g. 20 nm), the intermediate values can be omitted. For other wavelengths the risk fact

36、ors can be calculated as follows: For 600 nm, g(i) = 0,001 5 nm; For 600 nm, g(i) = 2,25 0,003 75, where is the wavelength, expressed in nanometers (nm).2 ISO 2014 All rights reservedBS EN ISO 25980:2014ISO 25980:2014(E)Table 1 Wavelength dependence of the spectral individual risk factorWavelength,

37、i, nmSpectral individual risk factor g (i) nm400 0,750 0410 0,712 5420 0,675 0430 0,637 5440 0,600 0450 0,562 5460 0,525 0470 0,487 5480 0,450 0490 0,412 5500 0,375 0510 0,337 5520 0,300 0530 0,262 5540 0,225 0550 0,187 5560 0,150 0570 0,112 5580 0,075 0590 0,037 5600 to 1 400 0,001 5NOTE To separat

38、e close welding places it is recommended to use translucent welding curtains.4.3 ReflectanceWhen measured with an Ulbricht sphere, the spectral reflectance between 230 nm and 400 nm shall be less than 10 %. The luminous reflectance shall be less than 10 % (based on the spectral distribution of CIE s

39、tandard illuminant A according to ISO 11664-2).4.4 UV-StabilityThe relative change of the luminous transmittance due to the test in EN 168 shall not be greater than 20 %. Exceedance is allowed unless the level of hazard G of 1 according to 4.2 is not reached or exceeded.4.5 Resistance to ignition4.5

40、.1 Testing shall be done at (23 5) C.4.5.2 3 samples, 190 mm long and 90 mm wide, are cut from the welding curtain, strip, or screen. The samples are put in the sample holder (see Figure 1). The lower end of the sample shall be 40 mm above the lower end of the sample holder. ISO 2014 All rights rese

41、rved 3BS EN ISO 25980:2014ISO 25980:2014(E)Dimensions in millimetresKey1 test markt thickness of sample holderNOTE All dimensions have tolerances of 0,1 mm.Figure 1 Sample holder4.5.3 A propane burner, having a flame height of 20 mm when put in upright position (see Figure 2), is used. The burner ha

42、s to burn for at least 1 min. Then it is turned by an angle of 45.4.5.4 The burner is directed at the bottom of the sample so that the tip of the flame hits the sample in the geometric centre of the lower edge. The surrounding area shall be free from draughts when the test is carried out (see Figure

43、 2).4.5.5 After 15 s remove the burner and observe whether the flame self-extinguishes and the material ceases to glow within 3050,s. Then carry out a visual inspection to see if the flame has reached the test mark 150 mm above the lower end of the sample (see Figure 2) according to 4.5.6.4 ISO 2014

44、 All rights reservedBS EN ISO 25980:2014ISO 25980:2014(E)Dimensions in millimetresKey1 mounting device2 frame3 sampleaposition of the burner when setting the length of the flameNOTE All dimensions have tolerances of 0,1 mm.Figure 2 Burner and testing setup4.5.6 The welding curtain, strip, or screen

45、material is considered to be satisfactory, if for all 3 samples the flame does not reach the test mark with the burner in position, the flame self-extinguishes after removal of the burner, and the material does not continue to glow for more than 3050,s after removal of the burner.4.6 Eyelet strength

46、4.6.1 GeneralIn case of the use of eyelets, the described test specifies a method for assessing the seam and eyelet strength of welding curtains, strips, and screens. Specimens of materials used for welding curtains, strips, and screens have a weight suspended to them and any damage is noted. ISO 20

47、14 All rights reserved 5BS EN ISO 25980:2014ISO 25980:2014(E)4.6.2 Test apparatusThe following apparatus is required.a) Bench stand with an attached horizontal clamp to hold sheet material 100+64mm wide evenly in its jaws, and allowing the material to hang down freely. The stand shall have a metalli

48、c hook of circular cross-section of about 6 mm diameter to attach the sheet material by an eyelet. The stand shall allow to hang a sample freely by at least 600 mm.b) Minimum weight of 7 kg attached to a metallic hook of circular cross-section of about 6 mm diameter.c) Clamp as in item a) but not at

49、tached to the stand, with a hole allowing to hang the weight from the clamp using the attached hook as in item b).4.6.3 Test specimena) Specimen 1: The dimensions of the test specimen shall be 100 +64mm along the side containing the eyelet under test (if any) and parallel to the seam under test (if any). The other dimension is not critical and should be between 150 mm and 200 mm. If the sample has no eyelet it should be provided with a punched hole