1、BRITISH STANDARD Respiratory protective devices Mouthpiece as semblies Requirements, testing, marking The European Standard EN 142:2002 has the status of a British Standard ICs 13.340.30 BS EN 142:2002 WkNb A%“ U- rn% E rn NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW $ pres
2、ent to the responsible European committee any enquiries on the interpretation, 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 subcommittee can be obtaine
3、d on request to its secretary. Cross-references The British Standards which implement 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” faci
4、lity of the BSI Standards Electronic Catalogue. 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 ofitself confer immunity from legal obligat
5、ions. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 20, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. OBSI 13 May 2002 ISBN O 580 39692 4 EUROPEAN ST
6、ANDARD NORME EUROPENNE EUROPISCHE NORM EN 142 April 2002 ICs 13.340.30 Supersedes EN 142:1989 English version Respiratory protective devices - Mouthpiece assemblies - Requirements, testing, marking Appareils de protection respiratoire - Ensembles embouts buccaux - Exigences, essais, marquage Atemsch
7、utzgerte - Mundstckgarnituren - Anforderungen, Prfung, Kennzeichnung This European Standard was approved by CEN on 27 December 2001. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national stan
8、dard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other lan
9、guage made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, I
10、celand, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2002 CEN All rights o
11、f exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 142:2002 E EN 142:2002 (E) Contents page Foreword 4 Introduction . 5 1 2 3 4 5 6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 6.1 O 6.1 1 6.1 1 . 1 6.1 1.2 6.1 1.3 6.12 6.12.1 6.12.2 6.12.3 6.13 6.14 6.14.1 6
12、.1 4.2 6.1 5 6.1 6 7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.1 O 7.10.1 7.10.2 7.10.3 7.1 1 7.12 7.13 2 Scope 5 Normative References . 5 Terms and definitions 5 Description . 6 Designation . 6 Requirements . 6 General 6 Ergonomics 6 Design . 6 Materials 6 Cleaning and disinfecting . 7 Flammability . 7
13、 Demountable parts 7 Replaceable components 7 Head harness 7 Connection . 8 General 8 Thread connection according to EN 148-1 8 Thread connection according to EN 148-2 8 Inhalation valves and exhalation valves (if fitted) 8 General 8 Inhalation valve(s) 9 Exhalation valve(s) 9 Breathing resistance .
14、 9 Mouthpiece assembly with thread connection according to EN 148-1 9 Mouthpiece assembly with thread connection according to EN 148-2 10 Nose clip . 10 Practical performance . Resistance to temperature 7 Lea kt ig ht ness . 9 Testing 10 General 10 Nominal values and tolerances . O Visual inspection
15、 . 11 Conditioning . 11 Flammability . 11 Head harness (pull test) 11 Connection . 11 Exhalation valve (flow test) . 11 Exhalation valve housing (pull test) 11 Exhalation valve leakage . 11 Samples 11 Test equipment 12 Test procedure . 12 Leaktightness . 12 Breathing resistance . 15 Practical perfor
16、mance . 15 EN 142:2002 (E) 7.13.1 General 15 7.13.2 Walking test 16 7.13.3 Work simulation test 16 8 Marking . 16 9 Information supplied by the manufacturer 17 Annex A (informative) Marking 19 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisi
17、ons of EU Directives 20 3 EN 142:2002 (E) Foreword This document EN 142:2002 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
18、 an identical text or by endorsement, at the latest by October 2002, and conflicting national standards shall be withdrawn at the latest by October 2002. This document supersedes EN 142:1989. This document has been prepared under a mandate given to CEN by the European Commission and the European Fre
19、e Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document. The annexes A and ZA are informative. According to the CENKENELEC Internal Regulations, the national standards org
20、anizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 4 EN 142:200
21、2 (E) I nt rod u cti on 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 a
22、pparatus 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 Standard refer
23、s to mouthpiece assemblies for respiratory protective devices, except escape apparatus and diving apparatus. It specifies minimum requirements for mouthpiece assemblies for use as part of respiratory protective devices. Laboratory and practical performance tests are included for the assessment of co
24、mpliance 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 hereafter. For dated references, s
25、ubsequent 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 (including amendments). EN 132, Respiratory protective devices - D
26、efinitions of terms and pictograms. EN 1 34, Respiratory protective devices - Nomenclature of components. EN 148-1 , Respiratory protective devices - Threads for facepieces - Part I: Standard thread connection. EN 148-2, Respiratory protective devices - Threads for facepieces - Part 2: Centre thread
27、 connection. EN 148-3, Respiratory protective devices - Threads for facepieces - Part 3: Thread connection M45 x 3. EN 1 3274-2, Respiratory protective devices - Methods of test - Part 2: Practical performance tests EN 13274-3, Respiratory protective devices - Methods of test - Part 3: Determination
28、 of breathing resistance. EN 13274-4, Respiratory protective devices - Methods of test - Part 4: Determination of resistance to flame and flammability. 3 Terms and definitions For the purpose of this European Standard the definitions given in EN 132 and the nomenclature given in EN 134 apply. 5 EN 1
29、42:2002 (E) 4 Description Air enters the mouthpiece assembly and passes directly into the mouth. The exhaled air flows back either through the facepiece connector into the breathing apparatus (closed-circuit breathing apparatus, pendulum breathing) or directly to the ambient atmosphere, via the exha
30、lation vaive(s), in other types of respiratory protective devices. 5 Designation Mouthpiece assemblies meeting the requirement of this European Standard shall be designated in the following manner: Mouthpiece assembly EN 142. 6 Requirements 6.1 General In all tests all test samples shall meet the re
31、quirements. 6.2 Ergonomics The requirements of this standard are intended to take account of the interaction between the wearer, the mouthpiece assembly, and where possible, the working environment in which the mouthpiece assembly is likely to be used. See annex ZA. 6.3 Design The design of the mout
32、hpiece assembly shall be such as to allow its inspection in accordance with the manufacturers instructions. The mouthpiece assembly shall be sufficiently robust to withstand the rough usage it is likely to receive in service. The mouthpiece assembly shall be designed so that there are no protruding
33、parts or sharp edges likely to be caught on projections in narrow passages. The surface of any part of the mouthpiece assembly likely to be in contact with the wearer shall be free from sharp edges and burrs. The mouthpiece assembly shall be designed to ensure its full function in any orientation. T
34、he mouthpiece shall be so designed that inward leakage between lips and mouthpiece is negligible. The mouthpiece shall be so designed that the airflow is not restricted unintentionally when the mouthpice assembly is being worn. Testing shall be done in accordance with 7.3 and 7.13. 6.4 Materials All
35、 materials used in the construction shall have adequate mechanical strength. Exposed parts, .e. those which may be subjected to impact during use of the apparatus shall not be made of aluminium, magnesium, titanium or alloys containing such proportions of these metals as will, on impact, give rise t
36、o frictional sparks capable of igniting flammable gas mixtures. Materials which come into direct contact with the wearers skin shall not be known to be likely to cause irritation or any other adverse effect to health. 6 EN 142:2002 (E) Testing shall be done in accordance with 7.3 and 7.13. 6.5 Clean
37、ing and disinfecting All materials used shall withstand the cleaning and disinfection agents and procedures recommended by the manufacturer. Testing shall be done in accordance with 7.3 and 7.13. 6.6 Resistance to temperature Following the conditioning in accordance with 7.4 and after being allowed
38、to return to ambient temperature the mouthpiece assembly shall show no appreciable deformation and any incorporated threaded connector to EN 148-1 or EN 148-2 shall be gauged and shall comply with the appropriate standard. Testing shall be done in accordance with 7.3. 6.7 Flammability Parts of the m
39、outhpiece assembly that might be exposed to a flame during use shall not burn or continue to burn for more than 5 s after removal from the flame. Testing shall be done in accordance with 7.3 and 7.5. 6.8 Demountable parts All demountable connections shall be readily connected and secured, where poss
40、ible by hand. Any means of sealing used shall be retained in position when the connection is disconnected during normal maintenance. Testing shall be done in accordance with 7.3 and 7.13. 6.9 Replaceable components Unless integral with the mouthpiece assembly the following components (if fitted) sha
41、ll be replaceable: Head harness, connector(s), inhalation and exhalation valves. Testing shall be done in accordance with 7.3. 6.10 Head harness The head harness shall be designed so that the mouthpiece assembly can be donned and removed easily. Testing shall be done in accordance with 7.13. The hea
42、d harness shall be adjustable or self-adjusting and shall hold the mouthpiece assembly firmly and comfortably in position. Testing shall be done in accordance with 7.13. Each strap of the head harness, buckles and other adjusting means shall withstand a pull of 50 N applied for 10 s in the direction
43、 of pulling when the facepiece is donned. No breaks or sliding of the straps shall occur. The requirement applies to the buckles and attachment lugs as well as to the straps. Testing shall be done in accordance with 7.3 and 7.6. 7 EN 142:2002 (E) 6.1 1 Connection 6.1 1 .I General The connection betw
44、een the mouthpiece assembly and the apparatus may be achieved by a permanent or special (e.g. insert) type of connection or by a thread connection. Testing shall be done in accordance with 7.3. The mouthpiece assembly shall not be equipped with a thread connection according to EN 148-3. Testing shal
45、l be done in accordance with 7.3. Correct and reliable connection between mouthpiece assembly and other parts of the respiratory protective device shall be assured. Testing shall be done in accordance with 7.3, 7.11 and 7.13. The connection between the mouthpiece body and the connector shall be suff
46、iciently robust to withstand axially a tensile force of 50 N. Testing shall be done in accordance with 7.7 6.11.2 Thread connection according to EN 148-1 This thread connection may be used as the mouthpiece assembly connection for all respiratory protective devices, except closed-circuit breathing a
47、pparatus and positive pressure demand breathing apparatus. If this thread connection is used then the relevant requirements of EN 148-1 shall be satisfied. Testing shall be done in accordance with 7.3. 6.11.3 Thread connection according to EN 148-2 This thread connection may be used as the mouthpiec
48、e assembly connection for closed-circuit breathing apparatus. If this thread connection is used then the relevant requirements of EN 148-2 shall be satisfied. Testing shall be done in accordance with 7.3. 6.12 Inhalation valves and exhalation valves (if fitted) 6.12.1 General Valve assemblies shall
49、be such that they can be readily maintained and correctly replaced. It shall not be possible to fit an exhalation valve assembly into the inspiratory circuit or an inhalation valve assembly into the exhalation circuit. Inhalation and exhalation valve assemblies, sub-assemblies and piece parts that are by the manufacturer designed to be identical, are acceptable. Differently designed inhalation and exhalation valves are acceptable if a precise and comprehensible description is given in the information manual supplied by the manufacturer. The description in the infor
