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1、BRITISH STANDARD BS EN 532:1995 Protective clothing Protection against heat and flame Test method for limited flame spread The European Standard EN 532:1994 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:15:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
2、 BS EN 532:1995 This British Standard, having been prepared under the direction of the Sector Board for Health and Environment, was published under the authority of the Standards Board and comes into effect on 15 May 1995 BSI 03-1999 The following BSI references relate to the work on this standard:
3、Committee reference PSM/35 Draft for comment 91/44713 DC ISBN 0 580 24102 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PSM/35, Clothing for protection against heat and flame, upon which the following bodies were repr
4、esented: Amalgamated Engineering Union British Clothing Industry Association British Foundry Association British Leather Confederation British Railways Board British Steel plc British Textile Confederation British Textile Technology Group Chemical Industries Association Chief and Assistant Chief Fir
5、e Officers Association Confederation of British Wool Textiles Limited Health and Safety Executive Home Office Industrial Safety (Protective Equipment) Manufacturers Association Institute of Occupational Hygienists Institution of Fire Engineers International Wool Secretariat Ministry of Defence Socie
6、ty of British Gas Industries Trades Union Congress Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:15:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 532:1995 BSI 03-1999i Contents Page Committees responsibleInside front cover Na
7、tional forewordii Foreword2 0Introduction3 1Scope3 2Normative references3 3Definitions3 4Principle4 5Health and safety of operators4 6Condtioning and testing atmospheres4 7Apparatus4 8Setting up the apparatus5 9Procedure and sampling5 Figure 1 Test specimen holder and gas burner operating position7
8、Figure 2 Gas burner8 Figure 3 Flame position and adjustment10 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:15:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 532:1995 ii BSI 03-1999 National foreword This British Standard has been prepared by Technical Committee PSM/35 and is the En
9、glish language version of EN 532:1994 Protective clothing Protection against heat and flame Test method for limited flame spread published by the European Committee for Standardization (CEN). It supersedes test 2A in BS 5438:1989. EN 532 was produced as a result of international discussions in which
10、 the United Kingdom took an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
11、Cross-references Publication referred toCorresponding British Standard EN 366:1993BS EN 366:1993 Protective clothing Protection against heat and fire Method of test: evaluation of materials and material assemblies when exposed to a source of radiant heat EN 367:1992BS EN 367:1992 Protective clothing
12、 Protection against heat and fire Method of determining heat transmission on exposure to flame EN 702:1994BS EN 702:1995 Protective clothing Protection against heat and flame Test method: Determination of the contact heat transmission through protective clothing or its materials Summary of pages Thi
13、s document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 10 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. License
14、d Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:15:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 532 November 1994 ICS 13.340.10 Descriptors: Personal protective equipment, protective clothing, heat protection, work clothing, tests, flame propa
15、gation, test atmospheres English version Protective clothing Protection against heat and flame Test method for limited flame spread Vtements de protection Protection contre la chaleur et les flammes Mthode dessai pour la propagation de flamme limite Schutzkleidung Schutz gegen Hitze und Flammen Prfv
16、erfahren fr die begrenzte Flammenausbreitung This European Standard was approved by CEN on 1994-11-24. 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.
17、Up-to-date lists and bibliographical references concerning such national standards may be obtained 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 u
18、nder the responsibility of a CEN member into its own language and notified to the Central Secretariat 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, Nethe
19、rlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 532:1994 E Lic
20、ensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:15:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 532:1994 BSI 03-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 162, Protective clothing including hand and arm protection, the secretariat of which i
21、s held by DIN. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). This European Standard shall be given the status of a national standard, either by publicat
22、ion of an identical text or by endorsement, at the latest by May 1995, and conflicting national standards shall be withdrawn at the latest by May 1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark,
23、 Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:15:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 532:1994 BSI 03-19993 0 Introduction This s
24、tandard specifies a method of test for limited flame spread of materials intended for flame protective clothing. It contains provisions for testing materials used as single layers (e.g. coveralls) or as multi-layer assemblies (e.g. firefighters tunics). The method of test is closely related to the m
25、ethod of test specified in ISO 6941. It uses the same apparatus as ISO 6941 but with a shorter specimen holder and template. Other changes have been made to the ISO method, following interlaboratory trials by CEN/TC 162 in which a wide range of flame retardant fabrics used in flame protective clothi
26、ng were tested using the ISO 6941 apparatus and the smaller specimen size specified in this standard. The principal changes are as follows. The specification of face ignition, as being the most appropriate for protective clothing. The stipulation of a flame application time of 10 s, as this gives be
27、tter discrimination than 15 s flame application time and better repeatability than 5 s flame application time. The specification of control of flame length in the horizontal position (horizontal reach) as opposed to the vertical flame height, because the flame is used in the horizontal position. The
28、 horizontal reach has been found to vary considerably between different burners when set to the same vertical flame height. Materials which do not burn to the upper or vertical edges of the smaller test specimens used in this test may be classified as producing limited flame spread. Limited flame sp
29、read materials are specified for clothing intended for protection against heat and flame hazards, in order to protect against the hazard of the clothing itself burning. The protective properties of the material are not determined by this test method, but they may be determined by other appropriate h
30、eat transmission test methods, e.g EN 366, EN 367 and EN 702. 1 Scope This standard specifies a method of test for determining limited flame spread of textile and textile related materials when a small flame is applied to the surface of vertically oriented specimens. 2 Normative references This Euro
31、pean Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications
32、 apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO 6940:1984, Textile fabrics Burning behaviour Determination of ease of ignition of vertically oriented specimens. ISO 6941:1984
33、, Textile fabrics Burning behaviour Measurement of flame spread properties of vertically oriented specimens. Amendment 1:1992 to ISO 6941:1984, Textile fabrics Burning behaviour Measurement of flame spread properties of vertically oriented specimens. 3 Definitions For the purposes of this standard,
34、the following definitions apply. 3.1 afterflame persistence of flaming of material under the specified test conditions, after the ignition source has been removed 3.2 afterflame time the length of time for which a material continues to flame, under the specified test conditions, after the ignition s
35、ource has been removed (also called duration of flame) 3.3 afterglow persistence of glowing combustion of a material under specified test conditions, after cessation of flaming or, if no flaming occurs, after removal of the ignition source NOTEAfterglow is a continuation of combustion with the evolu
36、tion of heat and light but without flame. Some materials absorb heat during the flame application and continue to emit this absorbed heat after removal of the igniting flame. This glowing without combustion should not be recorded as afterglow. 3.4 afterglow time the time for which a material continu
37、es to afterglow, under specified test conditions after cessation of flaming or after removal of the ignition source, ignoring glowing debris Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:15:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 532:1994 4 BSI 03-1999 3.5 flaming debris materia
38、l separating from the specimen during the test procedure and falling below the initial lower edge of the specimen and continuing to flame as it falls 3.6 molten debris molten material separating from the specimen during the test procedure and falling from the specimen without flaming 3.7 hole a brea
39、k in the test specimen at least 5 mm by 5 mm in size caused by melting, glowing or flaming. If the hole is crossed by any material it is described as discontinuous 3.8 flame application time the time for which the ignition flame is applied to the test specimen 3.9 horizontal reach the horizontal pro
40、jection of the igniting flame with the burner in a horizontal position, measured as the distance between the tip of the burner and the extreme end of the yellow part of the flame when viewed in a dim light see Figure 3 b) 4 Principle A defined ignition flame from a specified propane gas fuelled burn
41、er is applied for 10 s to the surface of a set of at least six vertically oriented test specimens taken from the test sample. Details of any cleaning or wetting as a pretreatment are specified in the appropriate performance specification. The occurrence of flame spread to an edge, afterglow, flaming
42、 or molten debris, and the formation of a hole are noted. The afterflame time and afterglow time are recorded. 5 Health and safety of test operators Burning of materials may produce smoke and toxic gases which can affect the health of operators. The testing area should be cleared of smoke and fumes
43、by suitable means. 6 Conditioning and testing atmospheres 6.1 Conditioning Condition the test specimens for at least 24 h in an atmosphere having a temperature of (20 2) C and a relative humidity of (65 5) %. If testing is not carried out immediately after conditioning, place the conditioned test sp
44、ecimens in a sealed container. Begin testing each specimen within 2 min of removing it from either the conditioning atmosphere or the sealed container. 6.2 Testing atmosphere Perform the tests in an atmosphere having a temperature between 10 C and 30 C, a relative humidity between 15 % and 80 %, and
45、 air movement less than 0,2 m/s at the commencement of the test of each specimen. NOTEDraught shields may be required to restrict air movement in the region of the test flame application. 7 Apparatus NOTEThis apparatus is identical in most respects with that used in ISO 6941, but is modified to use
46、a smaller specimen. It requires a different test specimen holder (see 7.5) and template (see 7.6). 7.1 Construction of testing equipment Some products of combustion are corrosive. The equipment should be constructed of material which will not be adversely affected by the fumes. 7.2 Mounting frame Mo
47、unting frame capable of holding the gas burner and the test specimen holder in the specified relative orientations (see Figure 1). 7.3 Gas burner Gas burner having the dimensions given in Figure 2. The burner shall be capable of being moved quickly from the standby position, where the tip of the bur
48、ner is at least 75 mm from the test specimen, to the horizontal operating position described in 8.2 (see Figure 1). 7.4 Gas Commercial grade propane gas shall be used. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:15:51 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 532:1994 BSI 03-19995
49、7.5 Test specimen holder Test specimen holder consisting of a rectangular metal frame having a test specimen support pin of maximum diameter 2 mm and length (27 1) mm at each corner of the rectangle of length 190 mm and width 150 mm. Spacer stubs of diameter 2 mm and length (20 1) mm are provided adjacent to the test specimen support pins. The distance from the centre of the test specimen support pin to the edge of the frame is 5 mm and the distance from the centre of the specimen support pin t
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