BS 4275:1997:2001 Edition
$198.66
Guide to implementing an effective respiratory protective device programme
| Published By | Publication Date | Number of Pages |
| BSI | 2001 | 64 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 5 | 1 Scope 2 References 2.1 Normative references 2.2 Informative references 3 Definitions and nomenclature 3.1 assigned protection factor (APF) 3.2 workplace protection factor 3.3 nominal protection factor |
| 6 | 3.4 atmosphere immediately dangerous to life and health (IDLH) 3.5 emergency breathing facility (EBF) 3.6 loose fitting facepiece 3.7 tight fitting facepiece 3.8 semi hood 3.9 semi blouse 3.10 competent person 4 Overall protective programme |
| 8 | Figure 1 – Elements to be considered in a risk assessment |
| 9 | 5 Types of respiratory protective devices 5.1 General Figure 2 – Environments and adequate respiratory protective devices |
| 10 | 5.2 Filtering devices |
| 11 | Figure 3 – Types of filtering devices |
| 12 | Table 1 – Classification of particle filters |
| 13 | Table 2 – Gas and vapour filters and combined filters and relevant standards |
| 15 | Table 3 – Filtering device types and relevant standards 5.3 Breathing apparatus |
| 16 | Figure 4 – Types of breathing apparatus |
| 17 | Table 4 – Fresh air hose and compressed air line breathing apparatus |
| 18 | Table 5 – Self contained breathing apparatus |
| 19 | 6 Limitations 6.1 General |
| 21 | Table 6 – Assigned protection factors for filtering devices |
| 22 | Table 7 – Assigned protection factors for breathing apparatus 6.2 Limitations of loose fitting facepieces 6.3 Limitations of tight fitting facepieces |
| 23 | 6.4 Additional limitations of breathing apparatus |
| 24 | 7 Selection 7.1 General 7.2 Adequacy |
| 26 | Figure 5 – Selection of an appropriate device |
| 27 | 7.3 Suitability |
| 28 | Table 8 – Assessment of required breathable gas supply rates |
| 29 | 7.4 Compatibility |
| 30 | 7.5 Protection against multiple risks |
| 31 | 8 Use 8.1 General principles 8.2 Respiratory protective programme 8.3 Safe working practices 8.4 Issue of devices 8.5 Wearer selection |
| 32 | 8.6 Instruction and training 8.7 Supervision 8.8 Fitting and performance tests |
| 33 | 8.9 Routine fit tests |
| 34 | 8.10 Storage 8.11 Return of devices for cleaning, servicing and maintenance 9 Maintenance 9.1 General principles 9.2 Procedures 9.3 Cleaning and decontamination 9.4 Servicing 9.5 Filter changing |
| 35 | 9.6 Testing and inspection 9.7 Record keeping 10 Disposal 11 Auditing |
| 36 | Annex A (informative) Description of respiratory protective devices — Filtering devices A.1 Nuisance dust masks A.1.1 Description A.1.2 Limitations A.1.3 Performance A.2 Quarter and half mask devices [BS 7356 (EN 140)], masks fitted with gas or combined filters (BS E… A.2.1 Description A.2.2 Limitations A.2.3 Performance A.3 Valved filtering half masks to protect against gases or gases and particles (BS EN 405) A.3.1 Description A.3.2 Limitations |
| 37 | A.3.3 Performance A.4 Half masks without inhalation valves to protect against gases and particles or particles only (pr… A.4.1 Description A.4.2 Limitations A.4.3 Performance A.5 Filtering half masks to protect against particles (BS EN 149) A.5.1 Description A.5.2 Limitations A.5.3 Performance |
| 38 | A.6 Full face masks [BS 7355 (EN 136)], masks fitted with gas or combined filters (BS EN 141), partic… A.6.1 Description A.6.2 Limitations A.6.3 Performance A.7 Power assisted particle filtering devices incorporating full face masks, half masks or quarter ma… A.7.1 Description A.7.2 Limitations A.7.3 Performance |
| 39 | A.8 Powered particle filtering devices incorporating helmets or hoods (prEN 12941) A.8.1 Description A.8.2 Limitations A.8.3 Performance A.9 Filtering devices with non mask mounted filters (prEN 12083) A.9.1 Description A.9.2 Limitations A.9.3 Performance |
| 40 | Annex B (informative) Description of respiratory protective devices — Breathing apparatus B.1 Fresh air hose B.1.1 General B.1.2 Fresh air hose breathing apparatus for use with full face mask, half mask or mouthpiece assembly … B.1.3 Powered fresh air hose breathing apparatus incorporating a hood (BS EN 269) |
| 41 | B.2 Compressed air line B.2.1 General B.2.2 Compressed air line breathing apparatus for use with full face mask, half mask or mouthpiece asse… |
| 42 | B.2.3 Compressed air line breathing apparatus incorporating a hood (BS EN 270) B.2.4 Light duty construction compressed air line breathing apparatus incorporating helmet or hood (prE… |
| 43 | B.2.5 Light duty construction compressed air breathing apparatus incorporating full face mask, half mas… B.2.6 Compressed air line or powered fresh air hose breathing apparatus incorporating a hood for use in… |
| 44 | B.2.7 Compressed air line protective clothing for use against chemical and radioactive contamination B.3 Open circuit self contained breathing apparatus (BS EN 137) B.3.1 Description B.3.2 Limitations B.3.3 Performance B.4 Self contained closed circuit breathing apparatus B.4.1 General |
| 45 | B.4.2 Self contained closed circuit compressed oxygen/nitrogen devices (BS EN 145) B.4.3 Self contained closed circuit chemical oxygen devices |
| 46 | Annex C (normative) Compressed air for breathing apparatus C.1 Air quality C.1.1 General C.1.2 purity Table C.1 – Criteria for air purity |
| 47 | C.1.3 Multiple contaminants C.1.4 Effect of elevated pressure C.2 Elements of a suitable compressed air system C.2.1 General C.2.2 Atmospheric air source |
| 48 | C.3 An example of a compressed air system incorporating a compressor C.3.1 General C.3.2 Air intake filter C.3.3 Compressor C.3.4 Aftercooler C.3.5 Water and oil separator |
| 49 | C.3.6 Coalescing filter(s) C.3.7 Dryer C.3.8 Particle filter C.3.9 Gas filter(s) C.3.10 Catalyst C.3.11 Second particle filter C.3.12 Minimum pressure device C.3.13 Non return valve C.3.14 Reserve air storage |
| 50 | C.3.15 Control units C.3.16 Couplings C.3.17 Purity monitoring facility C.3.18 Compressor system controls |
| 51 | C.3.19 Standby compressor C.3.20 Air receiver C.3.21 Alarm C.3.22 Condensate drainage C.3.23 Distribution pipework and/or flexible tubes |
| 52 | C.4 Special requirements for air for self contained breathing apparatus C.5 Maintenance, testing and inspection C.5.1 Maintenance C.5.2 Testing and inspection |
| 53 | Figure C.1 – Elements of a compressed air system |
| 54 | Annex D (informative) Derivation of assigned protection factors D.1 Background D.1.1 D.1.2 D.1.3 D.2 Validity of workplace protection factor data D.2.1 General D.2.2 Study protocol |
| 55 | D.2.3 Measurement techniques in the facepiece D.2.4 Data analysis |
| 56 | D.3 Conclusion Table D.1 – Number of individual WPF results for classes of filtering device Table D.2 – Number of individual WPF results for classes of breathing apparatus |
| 57 | Annex (informative) Examples of the calculation of assigned protection factors E.1 E.2 |
| 59 | Annex F Bibliography F.1 General F.2 Studies and reviews used in establishing APFs |
| 61 | List of references |
