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BOS 614: 2015
P627.00
The measurement and assessment of occupational noise for hearing conservation purposes
Description
This standard covers the measurement and rating of a working environment for hearing conservation purposes, the physical demarcation of an area where hearing conservation measures have to be applied, and medical surveillance.The rating level determined in terms of this standard is independent of personal exposure. The standard also covers recommendations regarding suitable hearing conservation measures and programmes.
NOTE 1 Because the susceptibility of individuals to noise varies, the limits laid down in clause 4 will not always ensure protection of the hearing of all individuals.
NOTE 2 The information to be supplied in reports is specified in Annex A.
NOTE 3 The mandatory symbolic sign for hearing protection to be displayed at the boundaries of noise zones is given in Annex B.
NOTE 4 Audiometric tests for employees exposed to gunshots or other explosive events are covered in Annex C.
NOTE 5 Personal noise exposure is covered in Annex D.
NOTE 6 A procedure for the calculation of the percentage loss of hearing (PLH), and disablement is given in Annex E.
NOTE 7 The guidelines for hearing assessments in Botswana are given in Annex F.