BS EN 458:2016 – TC:2020 Edition
$258.95
Tracked Changes. Hearing protectors. Recommendations for selection, use, care and maintenance. Guidance document
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 126 |
This document gives recommendations for the selection, use, care and maintenance of hearing protectors.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 76 | Contents Page |
| 81 | 1 Scope 2 Normative references 3 Terms and definitions |
| 83 | 4 Symbols and abbreviations 5 Types of hearing protectors 5.1 Design forms 5.1.1 Earmuffs |
| 84 | 5.1.2 Helmet mounted earmuffs 5.1.3 Earplugs 5.1.3.1 General 5.1.3.2 Pre-shaped earplugs 5.1.3.3 User-formable earplugs 5.1.3.4 Banded earplugs 5.1.3.5 Custom moulded earplugs 5.2 Function mode 5.2.1 Basic function mode |
| 85 | 5.2.2 Level-dependent hearing protectors 5.2.2.1 General 5.2.2.2 Passive level-dependent hearing protectors 5.2.2.3 Sound-restoration level-dependent hearing protectors 5.2.3 Active noise reduction (ANR) protectors 5.2.4 Hearing protectors with external audio input 5.2.4.1 General 5.2.4.2 Hearing protector with entertainment audio input 5.2.4.3 Hearing protector with work or safety-related audio input |
| 86 | 6 Selection 6.1 Principles 6.2 Selection according to sound attenuation 6.2.1 Guide to protection rating |
| 87 | 6.2.2 Sound attenuation in practice (Real-world attenuation) 6.2.3 Acoustical selection methods 6.2.3.1 Methods for assessing the sound attenuation of a passive hearing protector for continuous noise exposure |
| 88 | 6.2.3.2 Method for assessing the sound attenuation of a hearing protector for impulsive sounds 6.2.3.3 Selection method for sound-restoration level-dependent hearing protectors using HML data 6.2.3.4 Selection method for active noise reduction hearing protectors 6.2.3.5 Selection method for hearing protectors with audio input |
| 89 | 6.2.4 Selection of combination of earmuffs and earplugs 6.3 Selection according to work environment 6.3.1 Factors of work environment – overview 6.3.2 Acoustical factors 6.3.2.1 Influence of types of noise |
| 90 | 6.3.2.2 Exposure to continuous noise 6.3.2.3 Exposure to fluctuating noise 6.3.2.4 Exposure to intermittent or repeated short-term noise 6.3.2.5 Exposure to impulsive noise 6.3.2.6 Dominant low frequency noise 6.3.2.7 High frequency pure tone noise 6.3.2.8 Informative sounds |
| 91 | 6.3.3 Environmental factors (non-acoustic) 6.3.3.1 General 6.3.3.2 Temperature (high and low temperatures and/or humidity) 6.3.3.3 Contamination and unclean working conditions |
| 92 | 6.3.3.4 Moving machinery parts 6.3.3.5 Personal incompatibility of the user 6.3.3.6 Type of work being undertaken |
| 93 | 6.4 Communication 6.4.1 Essential work related speech communication, especially speech intelligibility 6.4.2 Effects of over-protection 6.5 Compatibility with other PPE 6.6 Selection according to hearing protector types 6.6.1 Earmuffs – General 6.6.2 Helmet-mounted earmuffs 6.6.3 Earplugs – General |
| 94 | 6.6.4 Hearing protectors with additional function modes 6.7 Medical disorders 6.8 Ergonomics and fitting |
| 95 | 6.9 Conformity with relevant requirements for incorporated electronics 6.9.1 Intrinsic safety 6.9.2 Electromagnetic compatibility (EMC) 7 Use 7.1 General 7.2 Availability of hearing protectors 7.3 Correct fitting 7.3.1 General 7.3.2 Earmuffs |
| 96 | 7.3.3 Earplugs 7.3.4 Fit check for hearing protectors 7.4 Simultaneous use of hearing protector with other PPE 7.4.1 General 7.4.2 Protective clothing 7.4.3 Spectacles 7.4.4 Goggles 7.4.5 Face shields |
| 97 | 7.4.6 Hoods 7.4.7 Safety helmets 7.4.8 Respiratory protection devices 7.5 Speech intelligibility and signal audibility 7.6 Instruction and training 7.6.1 General 7.6.2 Information |
| 98 | 7.6.3 Special instructions for use including training 7.7 Period of use |
| 99 | 7.8 Leisure activities 8 Care and maintenance 8.1 General 8.2 Hygiene and cleaning 8.3 Inspection and replacement 8.4 Storage 8.5 Disposal |
| 100 | Annex A (normative)Methods for assessing the sound attenuationof a passive hearing protector A.1 General |
| 103 | A.2 Octave band method |
| 104 | A.3 HML method |
| 106 | A.4 HML check method |
| 107 | A.5 SNR method |
| 108 | Annex B (informative)Method for assessing the sound attenuationof a hearing protector for impulsive noise B.1 General B.2 Method |
| 110 | Annex C (informative)Selection method for sound-restorationlevel-dependent hearing protectors using HML-data C.1 General C.2 Method 1: HML Method |
| 111 | C.3 Method 2A: HML check method – Measurement check C.4 Method 2B: HML check method – Listening method |
| 112 | Annex D (informative)Selection method for active noise reduction hearing protectors |
| 113 | Annex E (informative)Calculation method for hearing protectors with audio input E.1 General E.2 Method |
| 115 | Annex F (informative)Improving field performance and special instructions for use F.1 Improving field performance |
| 116 | F.2 Special instructions for optimum use |
| 119 | Annex G (informative)Further guidance on fit check methods for earplugs G.1 General information G.2 Fit check methods suitable for all types of earplugs |
| 120 | G.3 Fit check method exclusive to custom moulded earplugs |
| 121 | Annex H (informative)Noise types |
