BS 8468-2:2006 2007
$198.66
Respiratory protective devices for use against chemical, biological, radiological and nuclear (CBRN) agents – Negative pressure, air purifying devices with full face mask. Specification
| Published By | Publication Date | Number of Pages |
| BSI | 2007 | 52 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | Contents 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Description 1 5 Designation 2 6 Requirements 2 7 Marking 9 8 Information supplied by the manufacturer 10 9 Testing schedule 12 Annexes Annex A (normative) Testing 13 Annex B (normative) Test method for chemical agent permeation and penetration resistance against distilled sulfur mustard (HD) and sarin (GB) 33 Annex C (normative) Use of optical systems external to the full face mask 42 Annex D (informative) Relationship between this British Standard and the Basic Safety Requirements of EU Directive 89/686/EEC Personal Protective Equipment 42 Bibliography 44 List of figures Figure 1 – Pictograms 10 Figure A.1 – Typical single burner flammability test 15 Figure A.2 – Typical mechanical strength test equipment 17 Figure A.3 – Schematic diagram of apparatus for sodium chloride test 21 Figure A.4 – Diagram of the atomizer 22 Figure A.5 – Particle size distribution of sodium chloride aerosol 23 Figure A.6 – Schematic diagram of apparatus for paraffin oil test 26 Figure A.7 – Schematic diagram of generator for paraffin oil aerosol 27 Figure A.8 – Particle size distribution of paraffin oil mist 28 Figure A.9 – Atomizer 29 Figure A.10 – Blowers actuated by air power 30 Figure A.11 – Schematic drawing for the aerosolphotometer 31 Figure A.12 – Test arrangement for measurement of resistance to collapse of breathing hose 32 Figure B.1 – Schematic diagram of HD droplet placement on APD (direct-mounted filter) 37 Figure B.2 – Schematic diagram of HD droplet placement on APD with drink tube (direct-mounted filter) 38 Figure B.3 – Schematic diagram of HD droplet placement on APD with communicator (direct-mounted filter) 39 Figure B.4 – Schematic diagram of HD droplet placement on APD (non-direct-mounted filter(s)) 40 |
| 4 | List of tables Table 1 – Maximum acceptable levels of permeation and penetration 3 Table 2 – Breathing resistance 4 Table 3 – Breakthrough times 7 Table 4 – Filter test challenge and test breakthrough concentrations 8 Table 5 – Requirements for maximum penetration of test aerosols 8 Table A.1 – Breathing resistance tests 13 Table B.1 – Airflow characteristics for chemical agent permeation and penetration resistance test method 35 Table B.2 – Airflow characteristics for chemical agent permeation and penetration resistance test method 41 Table D.1 – Basic safety requirements for PPE – Comparison between the PPE Directive, Annex II and BS 8468-2 43 |
| 5 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions 3.1 negative pressure, air purifying device APD 4 Description |
| 8 | 5 Designation 5.1 Type 5.2 Classification 6 Requirements 6.1 General |
| 9 | 6.2 Chemical agent permeation and penetration Table 1 Maximum acceptable levels of permeation and penetration 6.3 Ergonomics 6.4 Breathing resistance |
| 10 | Table 2 Breathing resistance 6.5 Flammability 6.6 Filters 6.6.1 Design 6.6.2 Materials |
| 11 | 6.6.3 Mass 6.6.4 Connection 6.6.4.1 Direct filters 6.6.4.2 Non-direct filters |
| 12 | 6.6.5 Multiple filters 6.6.6 Combined filters 6.6.7 Packaging 6.6.8 Mechanical strength (MS) |
| 13 | 6.6.9 Temperature conditioning (TC) 6.7 Filters – Gas/vapour element 6.7.1 General 6.7.2 CBRN requirements – Filter classification, test agents – Challenges and breakthrough concentrations Table 3 Breakthrough times |
| 14 | Table 4 Filter test challenge and test breakthrough concentrations 6.8 Filters – Particulate element 6.8.1 General 6.8.2 Filter penetration Table 5 Requirements for maximum penetration of test aerosols |
| 15 | 7 Marking 7.1 General 7.2 System 7.3 Full face mask 7.4 Filters a) filter class and colour code, that is, combined filters shall be colour coded orange/white, e.g. Class 15 P3, colour coded orange/white; b) a mark or symbol showing if the filter is for a multiple filter device; c) the sentence: “For single use only.”; d) the designation and year of this standard, i.e. BS 8468-2:2006; e) the year and month of end of shelf life; the end of shelf life may be informed by a pictogram as shown in Figure 1 where the code “yyyy/mm” indicates the year and month; f) the manufacturer, supplier or importer shall be identified by name, trademark, or other means of identification; g) the sentence: “See information supplied by the manufacturer.” at least in the official language(s) of the country of destination, or the appropriate pictogram as shown in Figure 1; and h) the manufacturer’s model designation. |
| 16 | 7.5 Filter package a) year and month of the end of shelf life; the end of shelf life may be informed by a pictogram as shown in Figure 1 where the code “yyyy/mm” indicated the year and month; b) the manufacturer’s model designation; c) the manufacturer’s recommended conditions of storage (at least the temperature and humidity) or equivalent pictogram as shown in Figure 1. Figure 1 Pictograms 7.6 Breathing hose(s) and couplings, belts and harness 8 Information supplied by the manufacturer a) shall accompany the complete APD system and/or full face mask and/or filters (i.e. shall not necessarily accompany spare parts, valves, visors, etc.); b) shall be at least in the official language(s) of the country of destination; c) shall describe precisely and comprehensibly which permissible combinations of components are to be used; d) shall describe suitable procedures for decontamination; e) shall contain all information necessary for trained and qualified persons on: 2) for type B APDs, which optical systems the APD is designed to be compatible with; |
| 17 | 3) type-identifying marking to ensure that the APD can be identified; 4) checks prior to use; 5) fitting; 6) how the filter(s) is inserted in the equipment for which it is (they are) designed and how that equipment is identified; 7) use; 8) maintenance; 9) storage of the full face mask/filter/complete APD; and 10) disposal; f) shall be clear and comprehensible; if helpful, illustrations, part numbers and marking should be added; g) shall include warnings against problems likely to be encountered, for example: 2) the hazards of oxygen and oxygen-enriched air; 3) the use of combined respiratory protective devices, especially those which are not directly connected to the full face mask 4) air quality; 5) use of equipment in explosive atmosphere; and 6) storage under conditions other than those specified by the manufacturer might affect the shelf life; h) shall give an explanation of any colour coding and symbols used; and i) shall give the name and address of manufacturer and/or his authorized representative. |
| 18 | 9 Testing schedule |
| 19 | Annex A (normative) Testing A.1 General A.2 Nominal values and tolerances A.3 Visual inspection A.4 Breathing resistance for APDs Table A.1 Breathing resistance tests |
| 20 | A.5 Connection pull test A.5.1 Strength of breathing hose and couplings A.5.2 Leaktightness A.5.3 Strength of filter/full face mask connection A.6 Flammability A.6.1 Principle A.6.2 Apparatus |
| 21 | Figure A.1 Typical single burner flammability test |
| 22 | A.6.3 Procedure A.7 Mechanical strength (MS) A.7.1 Test equipment |
| 23 | Figure A.2 Typical mechanical strength test equipment A.7.2 Test procedure |
| 24 | A.8 Temperature conditioning (TC) a) to a dry atmosphere at (70 ± 3) ˚C for 24 h; b) to a temperature of (p30 ± 3) ˚C for 24 h; A.9 Test flow conditions A.9.1 General A.9.2 Multiple filters A.10 Gas capacity method |
| 25 | A.11 Filter penetration A.11.1 General a) sodium chloride test in accordance with A.11.2; and b) paraffin oil test in accordance with A.11.3. A.11.2 Sodium chloride test |
| 27 | Figure A.3 Schematic diagram of apparatus for sodium chloride test |
| 28 | Figure A.4 Diagram of the atomizer |
| 29 | Figure A.5 Particle size distribution of sodium chloride aerosol |
| 30 | A.11.3 Paraffin oil test |
| 32 | Figure A.6 Schematic diagram of apparatus for paraffin oil test |
| 33 | Figure A.7 Schematic diagram of generator for paraffin oil aerosol |
| 34 | Figure A.8 Particle size distribution of paraffin oil mist |
| 35 | Figure A.9 Atomizer |
| 36 | Figure A.10 Blowers actuated by air power |
| 37 | Figure A.11 Schematic drawing for the aerosolphotometer |
| 38 | A.12 Resistance to collapse of breathing hose A.12.1 Apparatus Figure A.12 Test arrangement for measurement of resistance to collapse of breathing hose |
| 39 | A.12.2 Procedure Annex B (normative) Test method for chemical agent permeation and penetration resistance against distilled sulfur mustard (HD) and sarin (GB) B.1 Principle B.2 Materials B.3 Apparatus |
| 40 | B.4 Preparation |
| 41 | B.5 Procedure B.5.1 Set-up common to all test agents B.5.2 HD vapour Table B.1 Airflow characteristics for chemical agent permeation and penetration resistance test method |
| 42 | B.5.3 HD liquid |
| 43 | Figure B.1 Schematic diagram of HD droplet placement on APD (direct-mounted filter) |
| 44 | Figure B.2 Schematic diagram of HD droplet placement on APD with drink tube (direct-mounted filter) |
| 45 | Figure B.3 Schematic diagram of HD droplet placement on APD with communicator (direct-mounted filter) |
| 46 | Figure B.4 Schematic diagram of HD droplet placement on APD (non-direct-mounted filter(s)) |
| 47 | B.5.4 GB vapour Table B.2 Airflow characteristics for chemical agent permeation and penetration resistance test method B.5.5 Termination procedure |
| 48 | B.6 Test report a) the laboratory’s name and date of test; b) reference to the appropriate standard manufacturer’s name and model number of the APD; c) agents used, and for each agent: 2) the three highest consecutive peak excursions in mg/m3; d) a digital photograph of the APD tested with droplet positions marked. Annex C (normative) Use of optical systems external to the full face mask Annex D (informative) Relationship between this British Standard and the Basic Safety Requirements of EU Directive 89/686/EEC Personal Protective Equipment |
| 49 | Table D.1 Basic safety requirements for PPE – Comparison between the PPE Directive, Annex II and BS 8468-2 |
| 50 | Bibliography |
