BS EN 145-1998 Respiratory protective devices Self-contained closed-circuit breathing apparatus compressed oxygen or compressed oxygen-nitrogen type Requirements testing marking《呼吸.pdf

1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 145 : 1998 Incorpor

2、ating Amendment No. 1 The European Standard EN 145 : 1997, with the incorporation of amendment A1:2000, has the status of a British Standard ICS 13.340.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Respiratory protective devices Self-contained closed-circuit breathing app

3、aratus compressed oxygen or compressed oxygen-nitrogen type Requirements, testing, markingThis British Standard, having been prepared under the direction of the Health and Environment Sector Board, was published under the authority of the Standards Board and comes into effect on 15 January 1998 BSI

4、05-2001 ISBN 0 580 28694 0 BS EN 145 : 1998 Amendments issued since publication Amd. No. Date Text affected 13132 May 2001 Indicated by a sideline National foreword This British Standard is the English language version of EN 145 : 1997, including amendment A1:2000. It supersedes BS 7170 : 1990 and B

5、S EN 145-2 : 1993, which are withdrawn. The UK participation in its preparation was entrusted to Technical Committee PH/4, Respiratory protection, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation,

6、 or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which impleme

7、nt international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. Compliance with a British Standard does

8、 not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 26, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issu

9、ed. Sidelining in this document indicates the most recent changes by amendment.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and

10、by any means reserved worldwide for CEN national Members. Ref. No. EN 145 : 1997 + A1:2000 E EUROPEAN STANDARD EN 145 NORME EUROPE ENNE August 1997 EUROPA ISCHE NORM +A 1 March 2000 ICS Supersedes EN 145 : 1988 and EN 145-2 : 1992 Descriptors: Personal protective equipment, accident prevention, resp

11、iratory protective equipment, compressed gas, oxygen, nitrogen, designation, specifications, safety, tests, marking English version Respiratory protective devices Self-contained closed-circuit breathing apparatus compressed oxygen or compressed oxygen-nitrogen type Requirements, testing, marking (in

12、cludes amendment A1:2000) Appareils de protection respiratoire Appareils de protection respiratoire isolants autonomes a circuit ferme , du type a oxyge ne comprime ou a oxyge ne-azote comprime Exigences, essais, marquage (inclut lamendement A1:2000) Atemschutzgera te Regenerationsgera te mit Drucks

13、auerstoff oder Drucksauerstoff/-stickstoff Anforderungen, Pru fung, Kennzeichnung (entha lt A nderung A1:2000) This European Standard was approved by CEN on 1997-04-03. Amendment A1:2000 was approved by CEN on 2000-01-24. CEN members are bound to comply with the CEN/CENELEC Internal Regulations whic

14、h 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 Stan

15、dard 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 stan

16、dards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 145 : 1997 BSI 05-2001 Foreword This European Standard has been prepared by Technic

17、al Committee CEN/TC 79, Respiratory protective devices, the secretariat of which is held by DIN. This European Standard supersedes EN 145 : 1988 and EN 145-2 : 1992. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,

18、 at the latest by February 1998, and conflicting national standards shall be withdrawn at the latest by February 1998. The significant technical differences between this European Standard and the previous European Standards are: specifications for positive pressure devices; specifications for oxygen

19、 nitrogen devices. For relationship with EU Directive, see informative annex ZA, which is an integral part of this standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belg

20、ium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. | | | | | | | | | | | | | | | | | | | | | | Foreword to amendment A1 This European Standard has been prepared by Tech

21、nical 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 identical text or by endorsement, at the latest by September 2000, and conflicting national standar

22、ds shall be withdrawn at the latest by September 2000. 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 EU Directive(s). According to the CEN/CENELEC Internal Regulations,

23、the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Ki

24、ngdom.Page 3 EN 145 : 1997 BSI 05-2001 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 ou

25、t on complete apparatus where specified 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 mass distribution are similar to those of the complete apparatus. 1 Scope This European

26、 Standard specifies minimum requirements for self-contained closed-circuit breathing apparatus, compressed oxygen (O 2 ) and compressed oxygen-nitrogen (O 2 N 2 ) types, used as respiratory protective devices, except escape apparatus and diving apparatus. Laboratory and practical performance tests a

27、re 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 references are cited at the appropriate places in the text and the publications are listed

28、 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. EN 132 : 1990 Respiratory prot

29、ective devices Definitions EN 134 : 1990 Respiratory protective devices Nomenclature of components EN 136 : 1997 Respiratory protective devices Full face masks Requirements, testing, marking EN 142 : 1989 Respiratory protective devices Mouthpiece assemblies Requirements, testing, marking EN 144-1 :

30、1991 Respiratory protective devices Gas cylinder valves Thread connection for insert connector 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 connection EN 148-3 : 19

31、92 Respiratory protective devices Threads for facepieces Thread connection M 453 3 EN 50014 : 1992 Electrical apparatus for potentially explosive atmospheres General requirements EN 50020 : 1994 Electrical apparatus for potentially explosive atmospheres Intrinsic safety i 3 Definition and descriptio

32、n For the purpose of this European Standard the definitions given in EN 132 : 1990 and the nomenclature given in EN 134 : 1990 apply together with the following description: Self-contained closed-circuit breathing apparatus, compressed oxygen or compressed oxygen-nitrogen type, designed and construc

33、ted so that exhaled breathing gas is ducted from the facepiece into a circuit which contains a carbon dioxide absorption cartridge and a breathing bag where it is available for re-breathing. The carbon dioxide absorption cartridge contains chemicals which absorb exhaled carbon dioxide. Oxygen or oxy

34、gen-nitrogen are fed into the apparatus at a suitable point by means of a constant injected flow or by a lung governed flow or by a suitable combination of both. The gas flow may be of the pendulum or loop type and excess gas is ejected via a relief valve. 4 Designation Designation of a self-contain

35、ed closed-circuit compressed oxygen or compressed oxygen-nitrogen breathing apparatus meeting the requirements of this European Standard: Self-contained closed-circuit breathing apparatus EN 145 / type / class e.g. Self-contained closed-circuit breathing apparatus EN 145 / O 2 N 2 /2N . 5 Classifica

36、tion The apparatus are classified according to the nominal working duration. See table 1. 6 Requirements 6.1 Design The apparatus should be of simple and reliable construction and as compact as possible. The design of the apparatus shall be such as to allow its inspection for reliable and safe opera

37、tion. The apparatus shall be sufficiently robust to withstand the rough usage it is likely to receive in service and designed so that it will continue to function satisfactorily while, temporarily, accidentally submerged in water in a normal wearing position (upright) and, thereafter, until the gas

38、in the cylinder is exhausted. WARNING. The apparatus is not designed for use under water.Page 4 EN 145 : 1997 BSI 05-2001 Table 1. Class of apparatus Class of apparatus Nominal working duration Minute volume Negative pressure Positive pressure h cycles/min l/stroke l/min 1 N 1 P 1 25 2,0 50,0 2 N 2

39、P 2 20 2,0 40,0 4 N 4 P 4 20 1,5 30,0 The apparatus shall be designed so that there are no parts or sharp edges likely to be caught on projections in narrow passages. The apparatus shall be designed so that the wearer can remove it, and, while still wearing the facepiece, continue to breathe from th

40、e apparatus. The apparatus shall be designed to ensure its full function in any orientation. The main valve of the gas cylinder(s) shall be arranged so that the wearer can operate it while wearing the apparatus. All individual components of the apparatus, except the breathing hoses and the pressure

41、gauge tube with pressure gauge shall be provided with a protective cover to provide protection against external damage. The gas cylinder valve shall be protected against damage from external elements. The protective cover shall not be able to open accidentally whilst the apparatus is in use. The app

42、aratus shall be so designed and constructed as to prevent ingress of the external atmosphere within the limits set out in this European Standard. The apparatus shall be so designed that chemicals of the apparatus, saliva or condensate shall not interfere with the function of the apparatus or cause a

43、ny harmful effect to the wearer. Parts which are designed for training apparatus shall not be interchangeable with the working apparatus and shall be clearly marked accordingly or manufactured in such a way that they cannot be inadvertently fitted to a working apparatus. Testing shall be done in acc

44、ordance with 7.2 and 7.3. 6.2 Material All materials used in the construction shall have adequate mechanical strength, durability and resistance to deterioration, e.g. by influence of heat and/or moisture. Exposed parts of the apparatus, excluding facepiece and breathing hoses, shall have a surface

45、resistance of less than 10 9 V. Exposed parts of the apparatus, i.e. those which may be subjected to impact during use, shall not be made of magnesium, titanium, aluminium or alloys containing such proportions of these metals as will, on impact, give rise to frictional sparks capable of igniting fla

46、mmable gas mixtures. Materials which come in direct contact with the wearers skin and the breathable gas shall not be known to be likely to cause irritation or any other adverse effect to health. Care shall be taken in selecting materials that may come into contact with high pressure oxygen. Testing

47、 shall be done in accordance with 7.2, 7.3 and 7.9. 6.3 Cleaning and disinfecting All parts requiring cleaning and disinfecting shall be able to withstand the cleaning and disinfecting agents and procedures recommended by the manufacturer. Testing shall be done in accordance with 7.2 and 7.3. 6.4 Ma

48、ss The mass of the apparatus as ready for use with facepiece and fully charged cylinder(s) shall not exceed the values given in table 2. Table 2. Mass of the apparatus Class of apparatus Maximum mass of apparatus Negative pressure Positive pressure kg 1N 1P 1 2 2N 2P 1 6 4N 4P 1 6 6.5 Connectors 6.5

49、.1 General Components of the apparatus shall be readily separated for cleaning, examining and testing. All demountable connections shall be readily connected and secured, where possible by hand. Any means of sealing used shall be retained in position when the joints and couplings are disconnected during normal maintenance. Testing shall be done in accordance with 7.2 and 7.3. 6.5.2 Couplings The apparatus shall be constructed so that any twisting of the breathing hoses does not