SANS 50404-2007 Respiratory protective devices for self-rescue - Filter self-rescuer from carbon monoxide with mouthpiece assembly《自我营救用呼吸防护装置 带嘴罩装置的防一氧化碳自我营救装置》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-20146-3 SANS 50404:2007Edition 2 EN 404: 2005Edition 2 SOUTH AFRICAN NATIONAL STANDARD Respiratory protective devices for self-rescue Filt

4、er self-rescuer from carbon monoxide with mouthpiece assembly This national standard is the identical implementation of EN 404:2005 and is adopted with the permission of CEN, rue de Stassart 36, B-1050 Brussels. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretor

5、ia 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 50404:2007 Edition 2 EN 404:2005 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee StanSA SC 5120.11D, P

6、ersonal protective equipment Respiratory equipment, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in August 2007. This SANS document supersedes SABS EN 404:1993 (first edition). EUROPEAN STANDARD NORME E

7、UROPENNE EUROPISCHE NORM EN 404 April 2005 ICS 13.340.30 Supersedes EN 404:1993 English version Respiratory protective devices for self-rescue - Filter self-rescuer from carbon monoxide with mouthpiece assembly Appareils de protection respiratoire pour lvacuation - Auto-sauveteur avec ensemble embou

8、t buccal filtre monoxide de carbone Atemschutzgerte fr Selbstrettung - Filterselbstretter mit Mundstckgarnitur zum Schutz gegen Kohlenmonoxid This European Standard was approved by CEN on 3 March 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the cond

9、itions 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

10、 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 Aust

11、ria, 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. EUROPEAN COMMITTEE FOR STANDARDI

12、ZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 404:2005: EEN 404:2005 (E) 2 Contents Page Foreword4 I

13、ntroduction .5 1 Scope 6 2 Normative references 6 3 Terms and definitions .6 4 Description .6 5 Classification6 6 Requirements.7 6.1 General7 6.2 Ergonomics 7 6.3 Design .7 6.4 Materials .7 6.5 Cleaning and disinfecting .8 6.6 Mass 8 6.7 Connections .8 6.8 Means of carrying 8 6.9 Harness.8 6.10 Hand

14、ling9 6.11 Leak tightness9 6.12 Facepiece9 6.12.1 Mouthpiece assembly .9 6.12.2 Breathing hose.9 6.13 Inhalation and exhalation valves9 6.14 Saliva trap.10 6.15 Integrity of device at high carbon monoxide concentrations .10 6.16 Conditioning.10 6.16.1 Mechanical strength 10 6.16.2 Rough usage (optio

15、nal).10 6.16.3 Temperature .10 6.16.4 Transport 10 6.17 Carbon dioxide content of inhalation air (dead space)10 6.18 Performance requirements .10 6.18.1 Minimum test duration 10 6.18.2 Carbon monoxide - breakthrough criteria.11 6.18.3 Temperature and humidity11 6.18.4 Breathing resistance .11 6.19 P

16、ractical performance .11 7 Testing 12 7.1 General12 7.2 Nominal values and tolerances 12 7.3 Visual Inspection .12 7.4 Conditioning.12 7.4.1 Mechanical strength test.12 7.4.2 Rough usage test.13 7.4.3 Temperature conditioning 13 7.5 Practical performance test14 7.5.1 Escape test .14 7.5.2 Transport

17、test.16 EN 404:2005 (E) 3 7.6 Laboratory test 17 7.6.1 Protection against carbon monoxide 17 7.6.2 Testing at high CO concentrations18 7.6.3 Breathing resistance .18 7.6.4 Leak tightness .18 7.6.5 Materials .18 7.6.6 Insulation resistance of non-metallic carrying containers .18 7.6.7 Inhalation and

18、exhalation valves .19 7.6.8 Carbon dioxide content of inhalation air (dead space) .19 7.6.9 Breathing hoses 19 7.6.10 Pull test and tear-off force20 8 Marking.20 8.1 General .20 9 Information supplied by the manufacturer .21 Annex A (normative) Methods of measurement of the insulation resistance of

19、non-metallic carrying containers .37 A.1 Voltmeter ammeter method37 A.2 Comparative method.37 Annex B (informative) Method for the determination of wet bulb temperature of the inhaled air 40 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Direc

20、tive 89/686/EEC Personal Protective Equipment.42 EN 404:2005 (E) 4 Foreword This document (EN 404:2005) 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 standar

21、d, either by publication of an identical text or by endorsement, at the latest by October 2005, and conflicting national standards shall be withdrawn at the latest by October 2005. This document supersedes EN 404:1993. This document has been prepared under a mandate given to CEN by the European Comm

22、ission and the European Free Trade Association, and supports essential requirements of EU Directive 89/686 EEC. For relationship with EU Directive 89/686 EEC, see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standar

23、ds organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slov

24、akia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 404:2005 (E) 5 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 pract

25、ical performance tests have been carried out successfully on complete device where specified in the appropriate standard. If for any reason a complete device is not tested then simulation of the device is permitted provided the respiratory characteristics and mass distribution are similar to those o

26、f the complete device. EN 404:2005 (E) 6 1 Scope This document refers to filtering devices designed for protection against carbon monoxide (filter self-rescuer). It specifies minimum requirements for filter self-rescuers. This document does not apply to apparatus for work and rescue or to diving app

27、aratus. 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

28、references, the latest edition of the referenced document (including any amendments) applies. EN 132:1998, Respiratory protective devices Definitions of terms and pictograms EN 134:1998, Respiratory protective devices Nomenclature of components EN 13274-2:2001, Respiratory protective devices Methods

29、 of test Part 2: Practical performance test 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 132:1998 and the nomenclature given in EN 134:1998 apply. 4 Description A filter self-rescuer is a respiratory protective filtering device in a suitable packin

30、g for use in personal escape, and designed to protect the wearer against carbon monoxide. It is dependent on ambient atmosphere and does not provide protection against oxygen deficient atmospheres. The filtering device consists of a mouthpiece assembly with a filter. The mouthpiece assembly of the f

31、iltering device is connected directly or indirectly to the filter(s). 5 Classification Filter self-rescuers are classified according to the minimum test duration which is defined by performing a breathing machine test in accordance with 7.6.1. Table 1 Classes of filter self-rescuers Class Minimum du

32、ration min FSR 1 A FSR 1 B 60 FSR 2 A FSR 2 B 75 FSR 3 A FSR 3 B 90 FSR 4 A FSR 4 B 120 In the class, the numbers 1 - 4 indicate the minimum duration time as seen in the Table 1. The letters A and B indicate the flow rates 30 l/min and 40 l/min. Devices passing “rough usage” requirements shall be ma

33、rked “R”. EN 404:2005 (E) 7 NOTE The effective duration time may vary according to the work rate. 6 Requirements 6.1 General In all tests, all test samples shall meet the requirements. Wherever a test clause is referenced, all sub-clauses of the test clause shall apply, unless otherwise stated. NOTE

34、 The requirements and test methods are based on experience with existing design of filter self-rescuers incorporating Hopcalite and drier. Consideration should be given to the behaviour of designs incorporating other filtering materials. 6.2 Ergonomics The requirements of this document are intended

35、to take account of the interaction between the wearer, the respiratory protective device, and where possible the working environment in which the respiratory protective device is likely to be used. The device shall satisfy 6.3 and 6.19. 6.3 Design The design of the device shall be such as to allow i

36、ts inspection in accordance with the information supplied by the manufacturer. The device shall be sufficiently robust to withstand the rough usage it is likely to receive in use with respect to its classification. The device shall be designed so that there are no protruding parts, sharp edges or bu

37、rrs likely to be caught on projections in narrow passages or that may harm the wearer. No part of the device likely to be in contact with the wearer shall have sharp edges or burrs. The filter self-rescuer shall be designed such that the outside of carrying container can be cleaned easily. If the fi

38、ltering device is fitted with a coarse dust filter bag this filter bag shall be easily detachable. The device shall be designed to ensure its full function in any orientation. Testing shall be done in accordance with 7.3 and 7.5. 6.4 Materials The carrying container and the locking device shall be a

39、dequately protected against corrosion. The materials used shall be able to withstand temperatures and mechanical stress expected when carried on the person or stored on machines and vehicles. Testing shall be done in accordance with 7.4.3 and 7.5.2. Exposed parts, i.e. those which may be subjected t

40、o impact during use of the device, shall not be made of aluminium, magnesium, titanium or their alloys. Materials that may come into contact with the wearers skin and the inhaled air shall not be known to be likely to cause irritation or any other adverse effect to health. Testing shall be done in a

41、ccordance with 7.3 and 7.5. EN 404:2005 (E) 8 To prevent electrostatic charges on non-metallic carrying containers the insulation resistance shall not exceed 109ohm. Testing shall be done in accordance with 7.6.6. 6.5 Cleaning and disinfecting All material shall be visibly unimpaired after cleaning

42、and disinfection by the agents and procedures specified by the manufacturer. Testing shall be done in accordance with 7.3. 6.6 Mass That part of the mass of the filtering device supported by the head, ready for use, shall not exceed 750 g. The mass of the complete device including carrying case shal

43、l not exceed 2 000 g. The determination of the mass shall be carried out where appropriate. Testing shall be done in accordance with 7.1. 6.7 Connections All connections of the filtering device shall be gas tight. Testing shall be done in accordance with 7.6.1 and 7.6.2. All the connections of the f

44、iltering device shall be sufficiently robust and withstand a force of 50 N applied for 10 s. Connections of unprotected breathing hoses shall withstand a force of 250 N applied for 10 s. Testing shall be done in accordance with 7.3, 7.5.1 and 7.6.10.2. 6.8 Means of carrying The carrying container sh

45、all be provided with means of carrying, which ensures comfortable, safe and - if required - continuous carrying on the person. This may also be achieved by additional measures, e.g. a carrying bag. Testing shall be done in accordance with 7.5.2. When the device is designed to be carried on the perso

46、n the tear-off force of the carrying means shall be not less than 400 N and shall not exceed 800 N. Testing shall be done in accordance with 7.6.10.3. 6.9 Harness The filter self-rescuer shall have a harness which ensures comfortable and safe wearing of the device when donned. The harness shall be a

47、djustable or elastic or a suitable combination of both. Testing shall be done in accordance with 7.5.1. Each strap of the harness shall withstand a pull of 50 N for 10 s in the direction in which the harness is pulled when the device is donned. EN 404:2005 (E) 9 Testing shall be done in accordance w

48、ith 7.6.10.2. 6.10 Handling The filter self-rescuer shall be capable of being donned in accordance with the information supplied by the manufacturer in a quick and simple manner within maximum of 20 s without undue exertion. The locking device shall be protected against being opened inadvertently. I

49、t shall be apparent whether or not the device has been opened and therefore requires inspection. Testing shall be done in accordance with 7.5.1. Any part of the filter self-rescuer used to pull the filtering device from its carrying or storage container shall withstand a force of 400 N applied for 10 s in the direction in which the part is subjected to such force during normal withdrawal of the filtering device. Testing in shall be done accordance with 7.6.10.2. 6.11 Leak tightness Leakages into any container designed to protect the device from exposure to con