SZNS 036: 2014 Measurement and assessment of occupational noise for hearing conversation purposes

E582.03

This standard covers the measurement and rating of a working environment for hearing conservation purposes, the physical demarcation of an area where hearing conservations measures have to be applied and medical surveillance.

 

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Description

This standard covers the measurement and rating of a working environment for hearing conservation purposes, the physical demarcation of an area where hearing conservations measures have to be applied and medical surveillance.

TABLE OF CONTENTS

Content Page
1 Scope 1
2 Normative references 1
3 Definitions and abbreviated terms 2
4 Noise rating limits 8
5 Hearing conservation programme 9
6 Assessment of noise 11
7 Demarcation of noise zones 11
8 Determination of the equivalent continuous rating level (LReq,T) 11
9 Preparation for assessment of measurement area 16
10 Assessment of measurement area (zoning) 17
11 Reassessment of measurement area (rezoning) 17
12 Reduction of noise 17
13 Wearing of hearing protection equipment (see SANS 50458 for the use, care and selection of hearing protectors) 18
14 Audiometry 18
15 Audiometric equipment 19
16 Maintenance and calibration of audiometric equipment 20
17 Baseline audiometry 21
18 Periodic screening audiometry 22
19 Diagnostic audiology 25
20 Exit audiometry 26
21 Records 27
Annex A Reports 28
Annex B Mandatory symbolic sign for hearing protection(type designation: MV 4 – SANS 1186-1) 32
Annex C Hearing conservation measures for employees exposed to high-energy impulse noise, for example, gunshots or other explosive events 33
Annex D Calculation of noise exposure levels 35
Annex E Determination of percentage loss of hearing (PLH), and permanent disability 38
Bibliography 42

Additional information

Format

PDF, Hardcopy