BS EN 14435-2004 Respiratory protective devices - Self-contained open-circuit compressed air breathing apparatus with half mask designed to be used with positive pressure only - Re.pdf

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1、BRITISH STANDARD BS EN 14435:2004 Respiratory protective devices Self-contained open-circuit compressed air breathing apparatus with half mask designed to be used with positive pressure only Requirements, testing, marking The European Standard EN 14435:2004 has the status of a British Standard ICS 1

2、3.340.30 BS EN 14435:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 2 December 2004 BSI 2 December 2004 ISBN 0 580 44938 6 National foreword This British Standard is the official English language version of EN 14435:2004. The UK partici

3、pation in its preparation was entrusted by Technical Committee PH/4, Respiratory protection, to Subcommittee PH/4/6, Self contained breathing apparatus, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. WARNING The

4、UK as a member of CEN, is obliged to publish EN 14435:2004 as a British Standard. However, attention is drawn to the fact that during the development of this European Standard, the UK consistently voted against its approval as a European Standard. The reason for this disapproval is as follows. The S

5、cope of EN 14435:2004 states that this standard “ specifies minimum performance requirements for self-contained open-circuit compressed air breathing apparatus with half mask designed to be used with positive pressure only. This European Standard does not apply to escape apparatus, diving apparatus

6、and apparatus used for fire fighting.” During discussion of this standard by BSI Committee PH/4/6, which mirrors the work of CEN Committee, TC79/SC6, the UK committee expressed the opinion that the self-contained open-circuit compressed air breathing apparatus with half mask is not a safe combinatio

7、n to be used in those emergency situations where wearers may be exposed to other conditions (such as exposure in confined spaces to, or leaks of, noxious or toxic substances) that will, on the basis of a risk assessment in accordance with The Control of Substances Hazardous to Health Regulations 200

8、2, require the combination to meet higher minimum performance requirements for the protection of the wearer. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “Intern

9、ational Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a Bri

10、tish Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international a

11、nd European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 27, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last iss

12、ued. Amendments issued since publication Amd. No. Date Comments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14435 August 2004 ICS 13.340.30 English version Respiratory protective devices - Self-contained open-circuit compressed air breathing apparatus with half mask designed to be used with

13、 positive pressure only - Requirements, testing, marking Appareils de protection respiratoire - Appareils de protection respiratoire isolants autonomes circuit ouvert, air comprim avec un demi-masque conus exclusivement pour une utilisation en pression positive - Exigences, essais, marquage Atemschu

14、tzgerte - Behltergerte mit Druckluft (Pressluftatmer) mit Halbmaske zum Gebrauch fr berdruck - Anforderungen, Prfung, Kennzeichnung This European Standard was approved by CEN on 19 May 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for

15、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 v

16、ersions (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, Belgiu

17、m, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMI

18、T EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14435:2004: EEN 14435:2004 (E) 2 Contents page Foreword5 Introduc

19、tion .6 1 Scope 7 2 Normative References.7 3 Terms and definitions .7 4 Description .7 5 Requirements.8 5.1 General8 5.2 Ergonomics 8 5.3 Design .8 5.4 Materials .9 5.5 Cleaning and disinfecting .9 5.6 Mass 9 5.7 Connections .9 5.7.1 General9 5.7.2 Couplings (if fitted)9 5.7.3 Strength of connection

20、s to half mask, demand valve and breathing hose (if fitted) .10 5.7.4 Connection between apparatus and half mask 10 5.7.5 High, medium and low pressure connections 10 5.8 Half mask 10 5.9 Body harness .10 5.10 Practical performance .10 5.11 Resistance to temperature and flammability 11 5.11.1 Temper

21、ature performance 11 5.11.2 Flammability.11 5.12 Protection against particulate matter 11 5.13 High and medium pressure parts.12 5.14 Pressure vessel12 5.15 Pressure vessel valve(s) .12 5.16 Pressure reducer .12 5.16.1 General12 5.16.2 Apparatus with a pressure reducer safety valve12 5.16.3 Apparatu

22、s without a pressure reducer safety valve 13 5.17 Pressure indicator and tube .13 5.17.1 General13 5.17.2 Pressure indicator of the pointer type.13 EN 14435:2004 (E) 3 5.17.3 Pressure indicator of the tactile type 13 5.17.4 Electronic pressure indicator.14 5.18 Warning device 14 5.18.1 General14 5.1

23、8.2 Pneumatic warning device14 5.18.3 Electronic warning device 14 5.19 Flexible hoses and tubes15 5.19.1 Breathing hose.15 5.19.2 Medium pressure connecting tube15 5.20 Lung governed demand valve15 5.20.1 General15 5.20.2 Leaktightness.15 5.21 Breathing resistance .15 5.21.1 Inhalation resistance.1

24、5 5.21.2 Exhalation resistance16 5.22 Static pressure.16 6 Testing 16 6.1 General16 6.2 Nominal values and tolerances16 6.3 Visual inspection .16 6.4 Resistance to temperature and flammability16 6.4.1 Laboratory tests with a breathing machine 16 6.4.2 Practical performance test .17 6.5 Pressure redu

25、cer .18 6.5.1 General18 6.5.2 Apparatus with a pressure reducer safety valve18 6.5.3 Apparatus without a pressure reducer safety valve 18 6.6 Warning device 18 6.7 Leaktightness.18 6.7.1 Low pressure test 18 6.7.2 High pressure test .18 6.8 Water immersion19 6.9 Strength of connections to half mask,

26、 demand valve and breathing hose (if fitted) .19 6.10 Resistance to collapse of breathing hose.19 6.10.1 Principle19 6.10.2 Apparatus .19 6.10.3 Procedure .19 6.11 Practical performance.19 6.11.1 General19 6.11.2 Walking test20 6.11.3 Work simulation test .20 6.12 Breathing resistance .20 EN 14435:2

27、004 (E) 4 6.12.1 Inhalation resistance .20 6.12.2 Exhalation resistance20 7 Marking .20 8 Information supplied by the manufacturer .21 Annex A (informative) Marking25 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives26 Bib

28、liography 27 EN 14435:2004 (E) 5 Foreword This document (EN 14435:2004) has been prepared by Technical Committee CEN/TC 79 “Respiratory protective devices”, 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 i

29、dentical text or by endorsement, at the latest by February 2005, and conflicting national standards shall be withdrawn at the latest by February 2005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essenti

30、al requirements of EU Directive(s). For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Sta

31、ndard : Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14435:2004 (E) 6

32、Introduction 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 successfully on complete apparatus wh

33、ere specified in the appropriate standard. If for a particular reason a complete apparatus is not tested then simulation of the apparatus is permitted provided the respiratory characteristics and mass distribution are similar to those of the complete apparatus. EN 14435:2004 (E) 7 1 Scope This Europ

34、ean Standard specifies minimum performance requirements for self-contained open-circuit compressed air breathing apparatus with half mask designed to be used with positive pressure only. This European Standard does not apply to escape apparatus, diving apparatus and apparatus used for fire fighting.

35、 Laboratory and practical performance tests are included for the assessment of compliance with the requirements. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated referen

36、ces, the latest edition of the referenced document (including any amendments) applies. EN 132, Respiratory protective devices - Definitions of terms and pictograms EN 134, Respiratory protective devices - Nomenclature of components EN 140:1998, Respiratory protective devices - Half masks and quarter

37、 masks - Requirements, testing, marking EN 144-1, Respiratory protective devices - Gas cylinder valves - Part 1: Thread connections for insert connector EN 144-2, Respiratory protective devices - Gas cylinder valves - Part 2: Outlet connections EN 837-1:1996, Pressure gauges - Part 1: Bourdon tube p

38、ressure gauges - Dimensions, metrology, requirements and testing EN 12021, Respiratory protective devices - Compressed air for breathing apparatus EN 13274-2, Respiratory protective devices - Methods of test - Part 2: Practical performance tests EN 13274-3, Respiratory protective devices - Methods o

39、f test - Part 3: Determination of breathing resistance EN 13274-4, Respiratory protective devices - Methods of test - Part 4: Flame tests EN 13274-5, Respiratory protective devices - Methods of test - Part 5: Climatic conditions EN 50014, Electrical apparatus for potentially explosive atmospheres -

40、General requirements EN 50020, Electrical apparatus for potentially explosive atmospheres - Intrinsic safety “i“ EN 61000-6-2, Electromagnetic compatibility (EMC) - Part 6-2: Generic standards; Immunity for industrial environments (IEC 61000-6-2:1999, modified) 3 Terms and definitions For the purpos

41、es of this European Standard, the terms and definitions given in EN 132 and EN 134 apply. 4 Description This apparatus typically comprises pressure vessel(s), body harness, lung governed demand valve, pressure indicator(s), warning device(s), connecting hoses and tubes and half masks. It may include

42、 a pressure reducer, pressure reducer safety valve, supplementary air supply, or other components and parts. EN 14435:2004 (E) 8 The apparatus functions by enabling the wearer to breathe compressed air on demand. The exhaled air from the wearer then passes without re-circulation to the ambient atmos

43、phere. 5 Requirements 5.1 General In all tests all test samples shall meet the requirements. The apparatus shall not incorporate the following: second medium pressure connector; rapid filling connector; ambient air bypass. 5.2 Ergonomics The requirements of this standard are intended to take account

44、 of the interaction between the wearer, the self- contained open-circuit compressed air breathing apparatus, and where possible the working environment in which the self-contained open-circuit compressed air breathing apparatus is likely to be used. See annex ZA. 5.3 Design The design of the apparat

45、us shall be such as to allow its inspection in accordance with the information supplied by the manufacturer. The apparatus shall be sufficiently robust to withstand the rough usage it is likely to receive in service with respect to its classification. The apparatus shall be designed so that there ar

46、e no protruding parts or sharp edges likely to be caught on projections in narrow passages. The surface of any part of the apparatus likely to be in contact with the wearer shall be free from sharp edges and burrs. All parts requiring manipulation by the wearer shall be readily accessible and easily

47、 distinguishable from one another by touch. All adjustable parts and controls shall be constructed so that their adjustment is not liable to accidental alteration during use. The apparatus shall be so designed that the wearer can remove it and, while still wearing the half mask, continue to breathe

48、from the apparatus. The apparatus shall be designed to ensure its full function in any orientation. The main valve(s) of pressure vessel(s) shall be arranged so that the wearer can operate it (them) while wearing the apparatus. If apparatus (of the same type) are designed for use with different size

49、s of pressure vessels, changing of pressure vessels shall be possible without the use of special tools. Where the manufacturer claims the apparatus can be used with a different range of pressure vessels then the worst case(s) shall be identified and tested. Apparatus fitted with more than one pressure vessel may be fitted with individual valves on each pressure vessel. It shall not be possible simultaneously to fit two or more pressure vessels of different filling pressures to the same