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Notices
A worker may not have a daily exposure to noise that is greater than 85
dBA or a impact noise in excess of a peak C-weighted level of 140 dB. Noise
exposure must be kept as low as practical. (General Regulation 91-191, 29)
Noise
levels must be measured when the employer or worker suspects that the noise
levels in a work area exceed 80 dBA. Noise measurement must be conducted by a
competent person using a type 2 sound level meter set to the A-weighted network
with slow response and that conforms to ANSI S1.4-1983 American National
Standard Specifications for Sound Level Meters. The amount of time employees
spend in an area where the noise level exceeds 80 dBA must also be measured.
Records of noise measurement must be kept and made available to the JHSC.
When
there is reason to suspect that measured noise levels have changed, the noise
and employee exposure must be re-measured and documented. (General Regulation
91-191, 29)
If the installation of engineering controls is
practical, the employer must install and use appropriate engineering controls
to reduce worker exposure as low as practicable. (General Regulation 91-191, 31)
Where
necessary, the employer must provide adequate hearing protection to reduce
exposure below exposure limits. The employee must wear hearing protection as required.
Hearing protection must conform to CSA Z94.2-94 Hearing Protectors. (General
Regulation 91-191, 32, 48)
In areas
where the noise level exceeds 85 dBA, signs must be posted that indicate the
range of noise levels measured and warns of the noise hazard. (General
Regulation 91-191, 33)
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