www bzfxw com 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 Briti[.]
Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI BRITISH STANDARD 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 BS EN 532:1995 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI BS EN 532:1995 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 represented: 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 Fire 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 Society of British Gas Industries Trades Union Congress 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: Committee reference PSM/35 Draft for comment 91/44713 DC ISBN 580 24102 Amendments issued since publication Amd No Date Comments Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI BS EN 532:1995 Contents Page Committees responsible Inside front cover National foreword ii Foreword Introduction Scope Normative references 3 Definitions Principle Health and safety of operators Condtioning and testing atmospheres Apparatus Setting up the apparatus Procedure and sampling Figure — Test specimen holder and gas burner operating position Figure — Gas burner Figure — Flame position and adjustment 10 © BSI 03-1999 i Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI BS EN 532:1995 National foreword This British Standard has been prepared by Technical Committee PSM/35 and is the English 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 the United Kingdom took an active part Cross-references Publication referred to Corresponding British Standard EN 366:1993 BS 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 BS EN 367:1992 Protective clothing — Protection against heat and fire — Method of determining heat transmission on exposure to flame BS EN 702:1995 Protective clothing — Protection against heat and flame — Test method: Determination of the contact heat transmission through protective clothing or its materials EN 367:1992 EN 702:1994 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 Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 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 ii © BSI 03-1999 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 532 NORME EUROPÉENNE November 1994 EUROPÄISCHE NORM ICS 13.340.10 Descriptors: Personal protective equipment, protective clothing, heat protection, work clothing, tests, flame propagation, test atmospheres English version Protective clothing — Protection against heat and flame — Test method for limited flame spread Vêtements de protection — Protection contre la chaleur et les flammes — Méthode d’essai pour la propagation de flamme limitée Schutzkleidung — Schutz gegen Hitze und Flammen — Prüfverfahren für die begrenzte Flammenausbreitung ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ 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 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 under 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, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1994 Copyright reserved to CEN members Ref No EN 532:1994 E Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EN 532:1994 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 is 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 publication 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, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ © BSI 03-1999 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EN 532:1994 Introduction Normative references This standard 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 method 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 clothing 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 better discrimination than 15 s flame application time and better repeatability than 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 horizontal reach has been found to vary considerably between different burners when set to the same vertical flame height Materials which 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 spread 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 heat transmission test methods, e.g EN 366, EN 367 and EN 702 This European 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 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, 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 Definitions ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ 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 For the purposes of this standard, 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 source 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 NOTE Afterglow is a continuation of combustion with the evolution 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 continues to afterglow, under specified test conditions after cessation of flaming or after removal of the ignition source, ignoring glowing debris © BSI 03-1999 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EN 532:1994 3.5 flaming debris Conditioning and testing atmospheres material 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 6.1 Conditioning 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 break in the test specimen at least mm by mm in size caused by melting, glowing or flaming If the hole is crossed by any material it is described as discontinuous 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 specimens in a sealed container Begin testing each specimen within 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 air movement less than 0,2 m/s at the commencement of the test of each specimen 3.8 flame application time NOTE Draught shields may be required to restrict air movement in the region of the test flame application the time for which the ignition flame is applied to the test specimen Apparatus 3.9 horizontal reach the horizontal projection 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 b)] Principle A defined ignition flame from a specified propane gas fuelled burner 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 or molten debris, and the formation of a hole are noted The afterflame time and afterglow time are recorded Health and safety of test operators NOTE This apparatus is identical in most respects with that used in ISO 6941, but is modified to use a smaller specimen It requires a different test specimen holder (see 7.5) and template (see 7.6) ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ 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 Mounting 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 The burner shall be capable of being moved quickly from the standby position, where the tip of the burner 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 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 by suitable means © BSI 03-1999 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EN 532:1994 7.5 Test specimen holder Test specimen holder consisting of a rectangular metal frame having a test specimen support pin of maximum diameter mm and length (27 ± 1) mm at each corner of the rectangle of length 190 mm and width 150 mm Spacer stubs of diameter 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 mm and the distance from the centre of the specimen support pin to the centre of the adjacent spacer stub is mm (see Figure 1) For materials which not spread flame sideways the alternative specimen holder No specified in ISO 6940:1984 may be used with specimens 200 mm by 80 mm An alternative arrangement of pins and stubs may be used in which the pins, (7 ± 1) mm long by a maximum of mm diameter, are mounted into the end of stubs, (20 ± 1) mm long by mm maximum diameter, so as to form the corners of a rectangle of 190 mm length and 150 mm width, or 190 mm length by 70 mm width for use with the smaller specimen 7.6 Template 8.2 Operating position of the burner Position the burner perpendicular to the surface of the test specimen such that the axis of the burner is 20 mm above the line of the lower pins and is aligned with the vertical centreline of the face of the test specimen (see Figure 1) Ensure that the tip of the burner is (17 ± 1) mm from the surface of the test specimen 8.3 Flame adjustment: horizontal reach Set the burner in the vertical standby position [see 7.3 and Figure a)] Light the burner and preheat it for at least with a flame length of approximately 40 mm Move the burner into the horizontal standby position [see Figure b)] and adjust the horizontal reach of the flame to (25 ± 2) mm NOTE If the apparatus does not have a horizontal standby position it will be necessary to remove the test specimen before carrying out the flame adjustment 8.4 Flame position ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ A flat rigid template of length (200 ± 1) mm and width (160 ± 1) mm having holes approximately mm in diameter adjacent to each corner, positioned so that the centres of the holes correspond to the centres of the test specimen support pins on the test specimen holder (see 7.5), i.e at each corner of a rectangle of length 190 mm and width 150 mm A smaller template, 200 mm by 80 mm with holes forming the corners of a rectangle 190 mm by 70 mm, is required for use with the smaller specimen holder No specified in ISO 6940:1984 7.7 Timing devices A timing device reading to 0,2 s or better is required to measure the flame application time At least one timing device reading to 0,2 s or better is required to measure the afterflame time and afterglow time This device is started, preferably automatically, at the instant of gas burner flame termination or removal, and is stopped manually Setting up the apparatus 8.1 Mounting of the test specimen Place the test specimen (see 9.1) on the pins of the test specimen holder, making certain that the pins pass through the points marked off from the template and that the specimen is (20 ± 1) mm away from the rectangular metal frame of the test specimen holder © BSI 03-1999 For multi-layer test specimens, each layer shall be mounted on the pins in the order of use Fit the test specimen holder to the mounting frame with the specimen vertical Move the burner from the standby position to the horizontal operating position (see 8.2) Confirm that the flame impinges on the test specimen in the correct location [see Figure c)] NOTE The flame reach should be checked regularly Procedure and sampling 9.1 Sampling 9.1.1 Single layer test specimens Mark out a set of six test specimens (200 ± 1) mm long by (160 ± 1) mm wide, three with the longer dimension in the length direction of the material and three with the longer dimension in the width direction Use the template (7.6) to mark the position of the specimen holder pins Condition the test specimens in accordance with 6.1 NOTE An extra test specimen is required for the setting up procedure (see clause 8) 9.1.2 Multi-layer test specimens Mark out a set of six test specimens (200 ± 1) mm long by (160 ± 1) mm wide, three with the longer direction in the length direction of the material and three with the longer dimension in the width direction Each test specimen shall consist of all the layers in the clothing assembly to be tested, arranged in the order as used Use the template (7.6) to mark the position of the specimen holder pins on each layer Condition the test specimens in accordance with 6.1 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EN 532:1994 NOTE An extra test specimen is required for the setting up procedure (see clause 8) 9.2 Procedure 9.2.1 Set up the apparatus as described in clause 9.2.2 Position a test specimen on the test specimen holder as described in 8.1 Apply the igniting flame for 10 s Observe and record the following information (see also the appropriate performance specification): a) the nature of the test specimen and the order of the layers in a multi-layered test specimen; b) which surface of the test specimen was subjected to the test flame; c) whether for any flame, any part of its lowest boundary reaches the upper edge or either vertical edge of the test specimen; d) whether a hole develops; e) the occurrence of flaming or molten debris; f) whether afterglow spreads beyond the flame spread area (usually the carbonized area) into the undamaged area; g) afterflame time to the nearest whole second; NOTE as s Afterflame times of less than s should be recorded h) afterglow time to the nearest whole second NOTE as s ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ Afterglow times of less than s should be recorded 9.2.3 Repeat 9.2.2 on the remaining test specimens 9.3 Test report The test report shall include the following information: a) a reference to this test method; b) for each test specimen, the information itemized in 9.2.2 as required by the appropriate performance specification © BSI 03-1999 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EN 532:1994 Figure — Test specimen holder and gas burner operating position © BSI 03-1999 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EN 532:1994 Figure — Gas burner © BSI 03-1999 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EN 532:1994 Figure — Gas burner (concluded) © BSI 03-1999 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI EN 532:1994 Figure — Flame position and adjustment 10 © BSI 03-1999 Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI blank Licensed Copy: Oxford Brookes ATHENS, Oxford Brookes University, 15/04/2009 05:39, Uncontrolled Copy, (c) BSI BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI Ð British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view 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