1、BRITISH STANDARD BS EN 269:1995 Respiratory protective devices Powered fresh air hose breathing apparatus incorporating a hood Requirements, testing, marking The European Standard EN 269:1994 has the status of a British Standard UDC 614.894.73:620.1BSEN269:1995 This British Standard, having been pre
2、pared under the directionof the Personal Safety Equipment Standards Policy Committee, was published underthe authority of the Standards Board and comes into effect on 15 January 1995 BSI 06-1999 The following BSI references relate to the work on this standard: Committee reference PSM/14 Draft for co
3、mment 89/38484 DC ISBN 0 580 22237 3 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 Oesterreichisches Normungsinstitut Belgium
4、Institut belge de normalisation Denmark Dansk Standard Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standa
5、rds Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Swe
6、den Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN269:1995 BSI 06-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii
7、 Foreword 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions and nomenclature 3 4 Description 3 5 Classification 3 6 Requirements 4 7 Testing 6 8 Marking 15 9 Instructions for use 15 National annex NA (informative) Committees responsible Inside back cover National annex NB (informativ
8、e) Cross-references Inside back cover Figure 1 Wooden blocks as used in practical performance tests 8 Figure 2 Schematic diagram of flammability test apparatus 9 Figure 3 Basket and hopper, rubber chippings 10 Figure 4 Measurement of strength of couplings 11 Figure 5 Collapse of air supply hose 12 F
9、igure 6 Arrangement of apparatus for assessment of resistance to kinking 13 Figure 7 Arrangement to assess strength of body harness or belt and air supply hose 14 Figure 8 Details of Sheffield head and torso 16 Table 1 Classification of apparatus 3 Table 2 Testing schedule 7BSEN269:1995 ii BSI 06-19
10、99 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 EN269:1994 Respiratory protective devices Powered fresh air hose breathing apparatus incorporating a hood Requirements,
11、testing, marking, published by the European Committee for Standardization (CEN). Together with BS EN138, BS EN139 and BS EN270 it supersedes BS4667-3:1974 which is withdrawn. EN 269 was produced as a result of international discussions in which the UnitedKingdom took an active part. A British Standa
12、rd 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, a
13、n inside front cover, pagesi andii, theENtitle page, pages2 to16, 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.EUROPEAN STANDARD NORME EUROP
14、ENNE EUROPISCHE NORM EN269 August1994 UDC 614.894.73:620.1 Descriptors: Respiratory protective equipment, accident prevention, equipment specifications, specifications, tests, marking English version Respiratory protective devices Powered fresh air hose breathing apparatus incorporating a hood Requi
15、rements, testing, marking Appareils de protection respiratoire Appareils de protection respiratoire air libre assistance motorise avec cagoule Exigences, essais, marquage Atemschutzgerte Frischluft-Druckschlauchgerte mit Motorgeblse in Verbindung mit Haube Anforderungen, Prfung, Kennzeichnung This E
16、uropean Standard was approved by CEN on 1994-08-17. 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 con
17、cerning 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 ow
18、n 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, Switzerlan
19、d and UnitedKingdom. 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 269:1994 EEN269:1994 BSI 06-1999 2 Foreword This European Standard
20、 has been prepared by the Technical Committee CEN/TC79, Respiratory protective devices, 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 requiremen
21、ts of the EC Directive(s). This European Standard shall be given the status of a national standard, either by publication of an identical test or by endorsement, at the latest by February1995 and conflicting national standards shall be withdrawn at the latest by February1995. According to the CEN/CE
22、NELEC 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 UnitedKingdom.EN269:1994 BSI 06-1999 3 In
23、troduction A given respiratory protective device can only be approved, when the individual components satisfy the requirements of the test specification which may be a complete standard or part of a standard and practical performance tests have been carried out on complete apparatus where specified
24、in the appropriate standard. If for any reason a complete apparatus is not tested then simulation of the apparatus is permitted provided the respiratory characteristics and weight distribution are similar to those of the complete apparatus. 1 Scope This European Standard specifies minimum requiremen
25、ts for powered fresh air hose breathing apparatus incorporating a hood as a respiratory protective device. Two classes of apparatus are covered, the differentiation resulting from mechanical performance and not respiratory protection. Escape and diving apparatus and that used in abrasive blasting op
26、erations are not covered by this standard. Laboratory and practical performance tests are included for the assessment of compliance with the requirements. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative ref
27、erences 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 th
28、e latest edition of the publication referred to applies. EN 132:1990, Respiratory protective devices Definitions. EN 134:1990, Respiratory protective devices Nomenclature of components. EN 136:1989, Respiratory protective devices Full face masks Requirements, testing, marking. EN 146:1991, Respirato
29、ry protective devices Powered particle filtering devices incorporating helmets or hoods Requirements, testing, marking. EN 148-1:1987, Respiratory protective devices Threads for facepieces Standard thread connection. EN 148-2:1987, Respiratory protective devices Threads for facepieces Centre thread
30、connection. EN 148-3:1992, Respiratory protective devices Threads for facepieces Thread connection M 45 3. EN 28031:1993, Rubber and plastics hoses and hose assemblies Determination of electrical resistance. (ISO 8031:1987) ISO 6941:1984/AMD1:1992, Textile fabrics Burning behaviour Measurement of fl
31、ame speed properties of vertically oriented specimens. IEC 651:1979, Sound level meters. 3 Definitions and nomenclature For the purposes of this European Standard the definitions and nomenclature given in EN 132 and EN 134 respectively apply together with the following: powered fresh air hose breath
32、ing apparatus incorporating a hood apparatus which is not self-contained and in which breathable fresh air is blown from an air source by means of a powered air supply 4 Description The construction of this apparatus enables the wearer to be provided with breathable fresh air which is forced through
33、 a low pressure air supply hose and a breathing hose by a powered air supply. The exhaled and excess air flows into the ambient atmosphere. Where a full face mask, half mask or mouthpiece assembly is incorporated into a hood the apparatus is classified as being fitted with a full face mask, half mas
34、k or mouthpiece assembly. 5 Classification 5.1 Classification Apparatus shall be classified in terms of robustness of construction in accordance with Table 1. Both class1 and class2 provide the same level of respiratory protection. Table 1 Classification of apparatus 5.2 Designation Respiratory prot
35、ective devices meeting the requirements of this standard shall be designated as follows: Fresh air BA EN 269 (class) Example: Fresh air BA EN 269 class 2. Class Apparatus details 1 Light duty construction 2 Heavy duty constructionEN269:1994 4 BSI 06-1999 6 Requirements 6.1 Materials 6.1.1 All materi
36、als used in the construction shall have adequate mechanical strength, durability and resistance to deterioration by heat. 6.1.2 Exposed parts of the apparatus i.e. those that may be subjected to impact during use of the apparatus, shall not be made of aluminium, magnesium, titanium or alloys contain
37、ing such proportions of these metals as will, on impact, give rise to frictional sparks capable of igniting flammable gas mixtures. 6.1.3 Materials that may come into direct contact with the wearers skin or that may affect the quality of the breathed air shall not be known to be likely to cause skin
38、 irritation or any other adverse effect to health. 6.1.4 The finish of any part of the apparatus likely to be in contact with the wearer shall be free of sharp edges or burrs. 6.1.5 The requirements of 6.1.1, 6.1.2, 6.1.3 and6.1.4 shall be assessed by visual inspection in accordance with 7.2. 6.2 Cl
39、eaning and disinfecting The materials used shall withstand the cleaning and disinfecting agents and procedures recommended by the manufacturer. Testing in accordance with 7.2. 6.3 Resistance to temperature 6.3.1 After storing in accordance with 7.3.1 and returning to room temperature the apparatus s
40、hall show no appreciable deformation or distortion of the lens(es) or visor and all performance requirements of this standard shall be met. 6.3.2 After storing in accordance with 7.3.1 the apparatus shall continue to operate satisfactorily as assessed by the procedures of 7.3.2 and 7.3.3. 6.3.3 Appa
41、ratus specifically designed for temperatures beyond the limits for storage or use given in 7.3.1 shall be tested and marked accordingly. 6.4 Inward leakage The continuous flow valve (if fitted) in the “minimum flow” position shall permit the minimum flow specified by the manufacturer, when measured
42、at the coupling to the hood and with the maximum stated length of air supply hose and filter(s) if fitted and the inward leakage shall not exceed an average of0,5% of the inhaled air of any of the10 test subjects in any of the test exercises when tested in accordance with7.4. 6.5 Flammability After
43、beign tested in accordance with 7.5 all exposed components of the apparatus including the hood shall not continue to burn for more than5s after removal from the flame. 6.6 Practical performance test When assessed in accordance with 7.6 the apparatus shall be such that it can be worn without avoidabl
44、e discomfort, the wearers shall show no undue signs of strain attributable to wearing the apparatus, and it shall impede the wearer as little as possible when in a crouched position or when working in a confined space. These tests serve the purpose of checking the equipment for imperfections that ca
45、nnot be determined by the tests described elsewhere in this standard. Where in the opinion of the test station approval is not granted because practical performance tests show the apparatus has imperfections related to wearers acceptance, the test station shall describe the test which revealed these
46、 imperfections. This will enable other test stations to duplicate the tests and assess the results thereof. 6.7 Connectors 6.7.1 General Components of the apparatus shall be readily separated for cleaning, examining and testing. All demountable connections shall be readily connected and secured, whe
47、re possible by hand. Any means of sealing shall be retained in position when the joints or couplings are disconnected during normal maintenance. Testing in accordance with 7.2 and 7.6. 6.7.2 Couplings The apparatus shall be constructed so that any twisting of the breathing hose or fresh air supply h
48、ose does not affect the fit or performance of the apparatus, or cause either hose to become disconnected. The design of the coupling shall be such as to prevent unintentional interruption of the air supply. Testing in accordance with 7.2 and 7.6. 6.7.3 Strength of breathing hose connections When tes
49、ted in accordance with 7.7, the connections of the breathing hose to the belt and to the hood shall withstand axially a force of250N for10s for class2 and50N for10s for class1 apparatus. 6.8 Connection between apparatus and hood The connection between the hood and the remainder of the apparatus may be achieved by a permanent or special type of connection or by a screw thread connection.EN269:1994 BSI 06-1999 5 Threads defined in EN148-1, EN148-2 and EN148-3 shall not be used for the
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1