BRITISH STANDARD BS EN 367 1992 Incorporating Amendment No 1 Protective clothing — Protection against heat and flames — Test Method Determination of the heat transmission on exposure to flame The Euro[.]
BRITISH STANDARD BS EN 367:1992 Incorporating Amendment No Protective clothing — Protection against heat and flames — Test Method: Determination of the heat transmission on exposure to flame The European Standard EN 367:1992 has the status of a British Standard UDC 614.895.5:687.174:614.873.6:620.193.94:536.46 BS EN 367:1992 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Belgium Denmark Finland France Germany Greece Iceland Ireland Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland United Kingdom This British Standard, having been prepared under the direction of the Personal Safety Equipment Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 December 1992 © BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference PSM/35 Draft for comment 90/42481 DC ISBN 580 21102 Oesterreichisches Normungsinstitut Institut belge de normalisation Dansk Standardiseringsraad Suomen Standardisoimisliito, r.y Association franỗaise de normalisation Deutsches Institut fỹr Normung e.V Hellenic Organization for Standardization Technological Institute of Iceland National Standards Authority of Ireland Ente Nazionale Italiano di Unificazione Inspection du Travail et des Mines Nederlands Normalisatie-instituut Norges Standardiseringsforbund Instituto Portugs da Qualidade Asociación Espola de Normalización y Certificación Standardiseringskommissionen i Sverige Association suisse de normalisation British Standards Institution Amendments issued since publication Amd No Date Comments 7667 May 1993 Indicated by a sideline in the margin BS EN 367:1992 Contents Page Cooperating organizations Inside front cover National foreword ii Foreword Introduction Scope Normative references 3 Definitions Principle Apparatus Precautions 7 Sampling Conditioning and testing atmospheres Test procedure 10 Test report Annex A (informative) Availability of materials 10 Annex B (normative) Reference table of electromotive force as a function of temperature for type T (copper/copper-nickel constantan) thermocouples 11 Annex C (informative) Specimen test report form 12 Annex D (informative) Significance of the heat transfer test 12 Figure — Calorimeter Figure — Calorimeter mounting block Figure — Specimen support frame Figure — Calorimeter location plate Figure — Support stand Table — Reference table of electromotive force as a function of temperature for type T (copper/copper-nickel constantan) thermocouples 11 Table D.1 13 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-reference Inside back cover © BSI 07-1999 i BS EN 367:1992 National foreword This British Standard has been prepared under the direction of the Personal Safety Equipment Standards Policy Committee and is the English language version of EN 367:1992 Protective clothing — Protection against heat and fire —Method of determining heat transmission on exposure to flame, published by the European Committee for Standardization (CEN) EN 367 was produced as a result of international discussions in which 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 Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages to 14, an inside back cover 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 07-1999 EN 367 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM October 1992 UDC 614.895.5:687.174:614.873.6:620.193.94:536.46 Descriptors: Personal protective equipment, protective clothing, heat protection, heat resistant materials, fire resistant materials, filing, thermal tests, heat transfer, flames, heat transfer coefficient English version Protective clothing — Protection against heat and flames — Test Method: Determination of the heat transmission on exposure to flame Vêtements de protection — Protection contre la chaleur et les flammes — Méthode d’essai: Détermination de la transmission de chaleur l’exposition d’une flamme Schutzkleidung — Schutz gegen Hitze und Flammen — Prüfverfahren: Bestimmung des Wärmedurchgangs bei Flammenwirkung This European Standard was approved by CEN on 1992-10-01 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 © 1992 Copyright reserved to CEN members Ref No EN 367:1992 E EN 367:1992 Foreword This European Standard was prepared by CEN/TC 162 “Protective clothing including hand and arm protection and lifejackets ” of which the secretariat 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 1993, and conflicting national standards shall be withdrawn at the latest by April 1993 The standard was aproved and in accordance with 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 and United Kingdom © BSI 07-1999 EN 367:1992 Introduction Scope This method has been developed from an ASTM method which was based on the Du Pont thermal protective index (TPI) method It has been considerably modified from previous versions following extensive interlaboratory trials carried out by ISO/TC 94/SC 13/WG The heat transmission through clothing is largely determined by its thickness including any air gaps trapped between the different layers The air gaps can vary considerably in different areas of the same clothing assembly The present method provides a grading of materials when tested under standard test conditions The following major modifications have been made from previous versions of this test method a) The air gap between the back of the test specimen and the calorimeter has been eliminated This was found to increase all the values recorded and to distort the results with some materials more than others b) The specimen size has been increased and the mass of the location plate has been specified The mass of the location plate is used to hold the specimen in position so that the specimen is compressed by a standard mass and is also restricted from shrinking c) The method of measuring the heat transmission has been drastically simplified and a new term heat transfer index (HTI) has been introduced to avoid confusion with the thermal protective index (TPI) or other terms used in previous versions of this test This change makes it easier to perform the test and reduces the possibility of mathematical errors in calculating the results The heat transfer index provides a method of grading materials which does not imply that the material tested will give any precise protection time under actual use conditions d) Other methods of restraining the test specimens using clamps or pins have been rejected on the basis of interlaboratory trials because of practical difficulties which were believed to increase the interlaboratory variability e) All terminology which implies that the test method measures the protection time provided by the test material has been eliminated The protection provided under actual use conditions will vary considerably, depending on the severity of the actual flame source and the thickness of the clothing, including intermediate air gaps, in the exposed area This European Standard specifies a method for comparing the heat transmission through materials or material assemblies used in protective clothing Materials are ranked by calculation of a heat transfer index, which is an indication of the relative protection under the specified test conditions The heat transfer index should not be taken as a measure of the protection time given by the tested materials under actual use conditions © BSI 07-1999 Normative references 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 139, Textiles — Standard atmosphere for conditioning and testing IEC 584-1, Thermocouples — Part 1: Reference tables Definitions For the purposes of this standard the following definitions apply 3.1 test specimen all the layers of fabric or other materials arranged in the order and orientation as used in practice and including undergarments 3.2 incident heat flux density the amount of energy incident per unit time on the exposed face of the specimen, expressed in kW/m2 3.3 heat transfer index (flame) a whole number calculated from the mean time in seconds to achieve a temperature rise of (24,0 ± 0,2) °C when testing by this method using a copper disc of mass (18,00 ± 0,05) g and a starting temperature of (25 ± 5) °C EN 367:1992 Principle A horizontally oriented test specimen is partially restrained from moving and subjected to an incident heat flux of 80 kW/m2 from the flame of a gas burner placed beneath it The heat passing through the specimen is measured by means of a small copper calorimeter on top of and in contact with the specimen The time to record a temperature rise of (24,0 ± 0,2) °C in the calorimeter is recorded in seconds The mean result for three test specimens is calculated as the “heat transfer index (flame)” Apparatus The apparatus consists of: — a gas burner; — a copper disc calorimeter; — a specimen support frame; — a calorimeter location plate; — a support stand; — suitable measuring equipment; — a template 5.1 Gas burner A flat topped Meker burner with a perforated top area of (38 ± 2) mm diameter and a jet suitable for propane gas shall be used Commercial grade propane shall be used with the flow being controlled by a fine control valve and flowmeter 5.2 Copper disc calorimeter The calorimeter consists of a disc of copper of at least 99 % purity, having a diameter of 40 mm and thickness 1,6 mm, and a weight of 18 g The disc should be accurately weighed before assembly A copper-constantan thermocouple, with an output in millivolts complying with IEC 584-1, is mounted on the copper disc as shown in Figure The constantan wire should be attached to the centre of the disc and the copper wire should be attached as near the circumference as possible but so as not to interfere with mounting the disc in the block The diameter of both wires should be 0,26 mm or less and only the length attached to the disc should be bared The calorimeter is located in a mounting block which shall consist of a 89 mm diameter circular piece of asbestos-free non combustible, heat insulating board of nominal thickness 13 mm The thermal characteristics should comply with the following specification: — density: (750 ± 50) kg/m3 — thermal conductivity: 0,18 W/(m·k) ± 10 % Figure — Calorimeter A circular cavity is machined in the centre of the block to accommodate the disc and an air gap, as shown in Figure The disc is bonded in position around its circumference with an adhesive capable of withstanding temperatures of about 200 °C The face of the copper disc shall be flush with the surface of the mounting block It shall also be coated with a thin layer of an optically black paint having a coefficient of absorption, a, greater than 0,9 (see Annex A ) 5.3 Specimen support frame The specimen support frame consists of a piece of copper 150 mm square and 1,6 mm thick with a 50 mm square hole in its centre (see Figure 3) 5.4 Calorimeter location plate The calorimeter location plate is made from a piece of aluminium 149 mm square and mm thick A circular hole 90 mm in diameter shall be centrally in this block (see Figure 4) The plate shall weigh (264 ± 13) g 5.5 Support stand A support stand is used to locate the specimen support frame relative to the burner The top face of the specimen support frame should be 50 mm above and parallel with the top face of the burner with the axis of the burner aligned with the centre of the opening in the support frame (see Figure 5) © BSI 07-1999 EN 367:1992 Figure — Calorimeter mounting block Figure — Specimen support frame © BSI 07-1999 EN 367:1992 Figure — Calorimeter location plate Figure — Support stand © BSI 07-1999 EN 367:1992 It is convenient to have a shutter between the burner and the specimen support frame The shutter should open completely in less than 0,2 s and should be operated immediately after placing the burner in position It is useful if the positioning of the burner, or the opening of the shutter, if fitted, can be used to record the start of the exposure automatically 5.6 Recorder To enable the absolute temperature of the copper disc to be determined, the thermocouple should be connected to either an ice junction or a commercial reference junction The voltage signal from the thermocouple should be connected to either a suitable potentiometric chart recorder or programmable data recorder The recorder should enable voltages to be read to 10 4V and times to 0,2 s 5.7 Template A flat rigid template measuring 140 mm × 140 mm Precautions a) Perform the test in a hood or ventilated area to carry away the fumes It may be necessary to turn off the exhaust or to shield the apparatus during the test so as not to disturb the flame b) The equipment becomes hot during testing and some test materials may melt or drip Use protective gloves when handling hot objects c) Keep combustible materials away from the burner Ensure that the solvent used for cleaning the calorimeter is kept away from hot surfaces and naked flames Sampling 7.1 Specimen dimensions The specimens shall have the dimensions 140 mm × 140 mm and shall be taken from points more than 50 mm from the edge of the pieces of the material, in an area free from defects Composite specimens shall reproduce the arrangement in which the layers are used in practice The specimen shall be marked out using the template (see 5.7 ) Conditioning and testing atmospheres 8.1 Conditioning atmosphere Prior to testing, the specimens shall be conditioned for at least 24 h at a temperature of (20 ± 2) °C and a relative humidity of (65 ± 2) % (see ISO 139) If testing is not carried out immediately after conditioning, place the conditioned test specimens in a sealed container Begin testing of each specimen within of removing it from the conditioning atmosphere or sealed container 8.2 Testing atmosphere Perform the tests in an atmosphere having a temperature of 10 °C to 30 °C and a relative humidity of 15 % to 80 % and which is free from draughts Test procedure 9.1 Preparation and calibration 9.1.1 Preliminary measures Position the support frame on the support stand so that the top surface on which the specimen is placed is 50 mm above the top face of the burner It is suggested that a guide and stops be used to enable the burner to be positioned quickly with its axis in line with the centre of the specimen Place the burner to one side, activate and ignite the gas supply, and allow several minutes for flame stabilization Connect the thermocouple to the cold junction, and connect the output voltage into the recording device Before every incident heat flux density regulation or specimen evaluation, the copper disc temperature should be in relatively steady state and within ± °C of ambient temperature Cooling may be accelerated by the use of any dry, chilled heat sink, or by forced air draft Alternatively, a number of calorimeter units may be rotated Heating may be achieved by contact of the palm of the hand with the copper disc or by short exposure to the burner flame NOTE On no account should the calorimeter mounting block be allowed to come into contact with water If this occurs accidentally it should be dried out thoroughly before further use 7.2 Number of specimens A minimum of three specimens shall be tested for each material or assembly of materials © BSI 07-1999 EN 367:1992 9.1.2 Regulation of the incident heat flux density The gas flow rate and burner setting will vary with the individual combination used, and regulation of the settings for one or both will be necessary during initial installation and from time to time during testing The correct flux should be achieved from a flame with clearly defined stable light blue cones firmly positioned on the burner grid with a large diffuse bluish flame above The flame setting is confirmed by measuring the heat flux density with the calorimeter Place the calorimeter location plate on the specimen support frame Place the calorimeter in the hole in the locating plate with the copper disc facing downwards Select the required rate of travel of the recording device, and slide the burner quickly and deliberately under the calorimeter until it locates against its stops If a shutter is used, open the shutter (see 5.5 ) Allow the burner to remain in position for about 10 s Withdraw the burner or close the shutter The recorded output should show a short non-linear temperature-time region just after the start of the exposure, followed by a linear region which continues until exposure ceases Refer to standard thermocouple electromotive force tables to determine the rate of rise of temperature in degrees celsius per second of this linear region The heat flux density, Q, (in kW/m2 ) is then determined from the following equation: M Cp R Q= A where M is the mass of the copper disc in kg; Cp is the specific heat of the copper 0,385·(kJ/kg °C); R is the rate of rise in disc temperature in linear region in °C/s; A is the disc area in m2 ⋅ ⋅ The heat flux density determined by this procedure should be within ± % of the specified 80 kW/m2 Adjust the gas flow rate if required, and repeat until three consecutive values are obtained which fall within the required limits 9.2 Test specimen mounting 9.2.1 Place the outermost layer of the specimen face downwards on the specimen support frame (see 5.3 ) Place the location plate (see 5.4) on top of the 9.2.2 If the specimen consists of more than one layer and the layers are not attached to one another, remove the location plate and mount each successive layer in the order and orientation as used in the assembly Use the weight of the location plate, with no additional pressure, to press each layer into contact with the previous layer 9.2.3 After the last (innermost) layer has been mounted, replace the location plate and place the calorimeter in the hole in the location plate so that the copper disc is in contact with the top of the innermost layer 9.3 Test specimen exposure 9.3.1 Slide the burner quickly and deliberately into position Immediately move the shutter, if fitted, from below the specimen Start the recording device simultaneously with the exposure of the specimen to the burner flame or mark the start of the exposure with the recorder already running, depending on the equipment used 9.3.2 Allow the test to continue until a temperature rise of (24 ± 0,2) °C is observed Observe and note any changes in specimen appearance during the test, e.g shrinkage, scorching, charring, holing, glowing, melting or dripping Replace the shutter, if fitted, and withdraw the burner Switch off the recorder 9.3.3 Remove the calorimeter and clean off any combustion products whilst it is still hot (see 6.2 ) Cool to within ± °C of ambient temperature If the remaining deposit on the calorimeter is thick or uneven, if the black coating has deteriorated, or if the copper is exposed, the calorimeter disc should be cleaned (see Annex A ) and repainted (see 5.2 ) At least one calibration run (see 9.1.2 ) should be carried out with the recoated calorimeter before testing further specimens 9.3.4 Measure the time in seconds for a temperature rise in the calorimeter of (24,0 ± 0,2) °C (see Annex D ) 9.3.5 Repeat the procedure with two more specimens Calculate the heat transfer index as the mean of the times for (24 ± 2) °C rise, to the nearest whole number NOTE It is also possible to measure the time in seconds for a temperature rise of (12,0 ± 0,1) °C, corresponding to a thermocouple output increase of 0,5 mV using an 18,00 g calorimeter This measurement can be used to determine to what extent heat transfer is delayed or reduced However, it should be stressed that the times measured have only a limited accuracy and not necessarily relate to protection times under actual use conditions specimen © BSI 07-1999 EN 367:1992 10 Test report The test report shall contain the following particulars: a) name of test laboratory; b) date; c) reference to this standard; d) identification reference of the materials tested; e) description of the test materials and the arrangement in which they were tested, if possible details of generic names, mass per unit area and thickness under no pressure and under the pressure of the location plate should be given; f) the time in seconds for a 24 °C temperature rise for each specimen tested and the heat transfer index calculated from these individual results; g) if requested, the time in seconds for a 12 °C temperature rise for each specimen tested may also be reported; h) description of any changes in appearance of the specimens; i) a statement as follows: “These results have been obtained by a test method intended solely to rank the material and are not necessarily applicable to actual fire conditions” © BSI 07-1999 EN 367:1992 Annex A (informative) Availability of materials The following are examples of sources of materials specified in this standard Equally suitable alternatives are available from other sources This information is given for the convenience of users of this standard and does not constitute an endorsement by CEN of these products Gas burner (clause 5.1 ) Fisher Burner model 3-902 P Fisher Scientific 60 Hottingerstraße 14 8032 Zurich, Switzerland Insulating board (clause 5.2 ) Monolux 500 Cape Boards & Panels Ltd Iver Lane, Uxbridge UB 80 2JQ, England Black paint (clause 5.2 ) Nextel Velvet Coating Black 2010 3M UK Ltd P.O Box 38, Yeoman House, 63, Croydon Road, Penge, London SE20 7TR, England Calorimeter cleaning liquid (clause 9.3.3 ) A mixture of three parts 1.1.1 trichloroethane and one part ethanol by volume has been found suitable Calorimeter paint remover (clause 9.3.3 ) Acetone 10 © BSI 07-1999 EN 367:1992 Annex B (normative) Reference table of electromotive force as a function of temperature for type T (copper/copper-nickel constantan) thermocouples (extracted from IEC Publication 584-1, 1977) Type T Copper/Copper-Nickel (constantan) Electromotive force as a function of temperature E 4V t68 ° C t 68 ° C 0 39 78 117 156 195 234 273 312 351 10 391 430 470 510 549 589 629 669 709 749 10 20 789 830 870 911 951 992 032 073 114 155 20 30 196 237 279 320 361 403 444 486 528 569 30 40 611 653 695 738 780 822 865 907 950 992 40 50 035 078 121 164 207 250 294 337 380 424 50 60 467 511 555 599 643 687 731 775 819 864 60 70 908 953 997 042 087 131 176 221 266 312 70 80 357 402 447 493 538 584 630 676 721 767 80 90 813 859 906 952 998 044 091 137 184 231 90 100 277 324 371 418 465 512 559 607 654 701 100 110 749 796 844 891 939 987 035 083 131 179 110 120 227 275 324 372 420 469 517 566 615 663 120 130 712 761 810 859 908 957 007 056 105 155 130 140 204 254 303 353 403 452 502 552 602 652 140 150 702 753 803 853 903 954 004 055 106 156 150 160 207 258 309 360 411 462 513 564 615 666 160 170 718 769 821 872 924 975 027 079 131 183 170 180 235 287 339 391 443 495 548 600 652 705 180 190 757 810 863 915 968 021 074 127 180 233 190 200 286 339 392 446 499 553 606 659 713 767 200 210 820 874 928 982 10 036 10 090 10 144 10 198 10 252 10 306 210 220 10 360 10 414 10 469 10 532 10 578 10 632 10 687 10 741 10 796 10 851 220 230 10 905 10 960 11 015 11 070 11 125 11 180 11 235 11 290 11 345 11 401 230 240 11 456 11 511 11 566 11 622 11 677 11 733 11 788 11 844 11 900 11 956 240 250 12 011 12 067 12 123 12 179 12 235 12 291 12 347 12 403 12 459 12 515 250 260 12 572 12 628 12 684 12 741 12 797 12 854 12 910 12 967 13 024 13 080 260 270 13 137 13 194 13 251 13 307 13 364 13 421 13 478 13 535 13 592 13 650 270 280 13 707 13 764 13 821 13 879 13 936 13 993 14 051 14 108 14 166 14 223 280 290 14 281 14 339 14 396 14 454 14 512 14 570 14 628 14 686 14 744 14 802 290 © BSI 07-1999 11 EN 367:1992 Annex C (informative) Specimen test report form Tests carried out by EN 367 Test Laboratory Reference No Test materials Date Type Mass/unit area g/m Layer (outer) Test results Incident heat flux Specimen Specimen Specimen Thickness mm no pressure Under location plate kW/m Time to 24 °C temperature rise Heat transfer index Observations on specimen appearance These results have been obtained by a test method aimed solely at ranking the materials tested and are not necessarily applicable to actual fire conditions Annex D (informative) Significance of the heat transfer test The heat transfer index (HTI) provides a method of ranking the ability of clothing assemblies to delay the transfer of heat from a flame It is derived from the time in seconds to achieve a 24 °C temperature rise under the specified test conditions, which corresponds to a thermocouple output increase of 1,00 mV ± 0,01 mV (± 10 4V) and a total heat transfer of (132,3 ± 1,1) kJ/m2 The heat transfer through clothing is dependent on the thickness of the clothing assembly including any air gaps The HTI is determined with the specimen compressed under a standard load so as to minimize any air gaps Thicker clothing gives better protection and gives higher HTI values but with increased variability The heat transfer index (HTI) should not be regarded as the time for which the clothing will provide protection against a flame Under actual use conditions, the severity of the flame and the compression of the clothing are not constant and can vary considerably from the standard test conditions The performance of wet clothing may differ from the performance of the dry test specimen An interlaboratory trial was carried out in 1989 testing 18 single or multilayer assemblies in five laboratories A further interlaboratory trial in 1991 involved seven single or multilayer assemblies tested in seven different laboratories The following formulae for repeatability and reproducibility were derived from this latest trial: repeatability = 0,19 + 0,055 (mean) reproducibility = 1,21 + 0,12 (mean) 12 © BSI 07-1999 EN 367:1992 The performance of the materials tested in these trials could be divided into five bands, as shown in the following Table D.1 This table illustrates how adding extra layers increases the HTI value Thick materials, particularly those containing large volumes of entrapped air, are especially effective The suggested limits for the different bands are based on the performance of actual materials and allow for the variability between laboratories The mid-points of each band are based on frequently occurring values and the band widths are twice the reproducibility based on this midpoint value If performance levels are set too close to the formal value, different laboratories will give different classifications In this proposed classification, any test assembly giving results which fall on the limit of a particular band ought to be retested and classification based on a minimum of two sets of results falling within the same band Assemblies which give results which differ by less than the reproducibility for the band should not be regarded as being significantly different It is possible to determine the heat transfer index (HTI) (24–12) as an additional factor in order to distinguish between different materials However, this parameter is also subject to poor reproducibility and to rounding errors Band HTI limits Typical assembly Table D.1 to Single layer to 12 Double layer, thick single 13 to 20 Triple layer, thick double 21 to 30 over 31 Very thick Extremely thick © BSI 07-1999 Comments Most single layer fabrics give results of or Covers a wide range of normal multilayer apparel Specialist firefighting clothing has HTI about 16 Specialist heat protective clothing Very special applications Reproducibility 1,7 2,3 3,2 4,3 13 14 blank BS EN 367:1992 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Personal Safety Equipment Standards Policy Committee (PSM/-) to Technical Committee PSM/35 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 Institute of Purchasing and Supply Institution of Fire Engineers International Wool Secretariat Lambeg Industrial Research Association Medical Research Council Ministry of Defence Society of British Gas Industries Trades Union Congress National annex NB (informative) Cross-reference Publication referred to Corresponding British Standard ISO 139:1973 BS 1051:1981 Glossary of terms relating to the conditioning, testing and mass determination of textiles © BSI 07-1999 BS EN 367:1992 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: 020 8996 9000 Fax: 020 8996 7400 BSI offers 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