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· OCCUPATIONAL
EXPOSURE LIMITS
· SMOKING
Employer must ensure that
worker’s exposure is kept as low as reasonable practicable and does not exceed
the occupational exposure limit listed in the table below.
|
Chemical name |
8-hour exposure limit |
15 minute or ceiling limit |
|
Acetic acid |
10 ppm |
15 ppm |
|
Acetone |
750 ppm |
1000 ppm |
|
Ammonia |
25 ppm |
35 ppm |
|
Carbon black |
3.5 mg/m3 |
-- |
|
Carbon dioxide |
5000 ppm |
30,000 ppm |
|
Carbon monoxide |
25 ppm |
-- |
|
Ethyl acetate |
400 ppm |
-- |
|
Formaldehyde |
0.75 ppm |
2 ppm |
|
Hydrogen sulfide |
10 ppm |
15 ppm |
|
Hydroquinone |
2 mg/m3 |
-- |
|
Isopropyl alcohol |
400 ppm |
500 ppm |
|
Sulfur dioxide |
2 ppm |
5 ppm |
If a worker is exposed to a
substance in a concentration greater than its 8-hour limit but less than its
15-minute limit, the employer must ensure that each 15 minute period is
followed by a period of at least 60 minutes below the 8-hour limit. The worker
cannot be exposed to more than 4 of the 15-minute periods in any one 24-hour
period.
If there is no 15-minute
limit, the 8-hour limit must be complied with except the worker may be exposed
to no more than 3 times the 8-hour limit for more than 30 minutes during a
24-hour period and 5 times the 8-hour limit at any time.
(Occupational Health and Safety
Code, 16)
If a
worker may be exposed to a harmful substance, the employer must identify the
health hazards and assess the workers’ exposure. The employer must inform
exposed workers of the health hazards associated with exposure to that
substance and of results of air testing at the work site.
If a
worker may be exposed to a concentration greater than the exposure limit, the
employer must measure concentrations.
(Occupational
Health and Safety Code, 21 - 22)
If a
worker is exposed to more than the exposure limit, the employer must
immediately protect the worker from further exposure, control the situation so
that no other workers are exposed, and explain to the worker the nature and
extent of the overexposure.
(Occupational
Health and Safety Code, 22)
The
employer must ensure that a ventilation system is designed, installed and
maintained in accordance with established engineering principles and maintained
according to the manufacturer’s specifications.
The
employer must ensure that externally exhausted air is prevented from entering a
work site, make up air is provided and the concentration of a contaminant
controlled by the ventilation system and discharged within the work site does
not exceed 10% of the contaminants occupational exposure limit.
The employer must ensure that workers are trained in
the correct use of the ventilation system and use it properly.
(Occupational Health and Safety Code, 386-8)
Check
local bylaws to determine whether there are any municipal smoking regulations.
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