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S-2.1, r. 11 - Regulation respecting the quality of the work environment

Schedule
Disposition versions

Full text
SCHEDULE B
(s. 16)
MINIMUM RATE OF AIR CHANGE PER HOUR
Table I
AVERAGE GENERAL VENTILATION
_________________________________________________________________________________
| | |
| | Minimum rate |
| Classification of establishments | of fresh air |
| | change per hour |
|_______________________________________________________|_________________________|
| |
| Food and beverages |
| _____________________________________________________________________________|
| | | |
| | Slaughtering and drysalting | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Mineral oils and fats factories | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Sausage and sausage casing manufacturing | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Poultry processing | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Milk concentrate manufacturing | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Fish processing | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Processing and canning of fruit and vegetables | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Biscuit manufacturing | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Bakeries | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Confectioneries | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Vegetable oil mills | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Distilleries | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Breweries | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Wine manufacturing | 2 |
|___|___________________________________________________|_________________________|
| |
| Tobacco products |
| _____________________________________________________________________________|
| | | |
| | Leaf-tobacco processing | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Tobacco products manufacturing | 2 |
|___|___________________________________________________|_________________________|
| |
| Rubber |
| _____________________________________________________________________________|
| | | |
| | Rubber footwear manufacturing | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Tire and tube manufacturing | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Other rubber industries | 3 |
|___|___________________________________________________|_________________________|
| |
| Leather |
| _____________________________________________________________________________|
| | | |
| | Tanneries | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Shoe factories | 2 |
|___|___________________________________________________|_________________________|
| |
| Textiles |
| _____________________________________________________________________________|
| | | |
| | Cotton yarn and cloth mills | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Wool yarn mills | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Wool cloth mills | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Synthetic textile mills | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Fiber preparation mills | 5 |
| |___________________________________________________|_________________________|
| | | |
| | Thread mills | 5 |
| |___________________________________________________|_________________________|
| | | |
| | Cordage and twine industry | 5 |
| |___________________________________________________|_________________________|
| | | |
| | Carpet, mat and rug industry | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Textile dying and finishing | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Linoleum and coated fabrics industry | 4 |
|___|___________________________________________________|_________________________|
| |
| Garages |
| _____________________________________________________________________________|
| | | |
| | Garages for maintenance and repairs | 4 |
| |___________________________________________________|_________________________|
| | | |
| | Garages for parking and storage | |
| | - with permanent employees | 3 |
| |___________________________________________________|_________________________|
| | | |
| | - without permanent employees | 2 |
|___|___________________________________________________|_________________________|
| |
| Wood |
| |_____________________________________________________________________________|
| | | |
| | Shingle mills | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Sawmills | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Veneer and plywood mills | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Sash, door and other millwood plants | |
| | (excluding hardwood flooring) | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Coffin and casket industry | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Wood conversion industry | 2 |
|___|___________________________________________________|_________________________|
| |
| Furniture and fixtures |
| _____________________________________________________________________________|
| | | |
| |Household furniture industry | 2 |
|___|___________________________________________________|_________________________|
| |
| Paper and related products |
| _____________________________________________________________________________|
| | | |
| | Pulp and paper mills | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Manufacturing of asphalt roofing paper | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Paper box and bag manufacturing | 2 |
|___|___________________________________________________|_________________________|
| |
| Metal products |
| _____________________________________________________________________________|
| | | |
| | Metal fabricating industries | 4 |
| |___________________________________________________|_________________________|
| | | |
| | Miscellaneous machinery fabrication | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Electrical appliance manufacturing | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Cell and battery manufacturing | 4 |
|___|___________________________________________________|_________________________|
| |
| Non-metallic products |
| _____________________________________________________________________________|
| | | |
| | Cement industry | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Lime industry | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Gypsum products manufacturing | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Concrete products manufacturing | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Reinforced concrete industry | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Clay products manufacturing (domestic clay) | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Refractory products manufacturing | 4 |
| |___________________________________________________|_________________________|
| | | |
| | Stone products manufacturing | 4 |
| |___________________________________________________|_________________________|
| | | |
| | Asbestos products manufacturing | 6 |
| |___________________________________________________|_________________________|
| | | |
| | Glass and glass products manufacturing | 4 |
| |___________________________________________________|_________________________|
| | | |
| | Abrasive industry | 4 |
|___|___________________________________________________|_________________________|
| |
| Chemicals |
| _____________________________________________________________________________|
| | | |
| | Explosives and ammunition manufacturing | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Mixed fertilizers manufacturing | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Plastics and synthetic resins industry | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Pharmaceutical and medical products | 2 |
| |___________________________________________________|_________________________|
| | | |
| | Paints and varnish industry | 4 |
| |___________________________________________________|_________________________|
| | | |
| | Maintenance products manufacturing | 3 |
| |___________________________________________________|_________________________|
| | | |
| | Industrial chemicals manufacturing | 2 |
|___|___________________________________________________|_________________________|
| |
| Warehourses: See Table III of this Schedule |
|_________________________________________________________________________________|
| | |
| Any other class or establishment not appearing | |
| in this Table or in Table II of this Schedule | 1 |
|_______________________________________________________|_________________________|
The number of air changes per hour listed in this Table may be converted to cfm/ft2 by using the following formula:
Air changes/hour × 12 + height of work level in feet (ref. main floor)
_________________
60
or to m3/h/m2 by using the following formula:
m3/h
__________ = Air changes/hour × 3.6 + height of work level in metres (ref. main floor)
m2
Table II
RATE OF AIR CHANGE PER HOUR FOR CERTAIN CLASSES OF ESTABLISHMENTS
_________________________________________________________________________________
| | | |
| | Total ventilation area Fresh air | |
| |_____________________________________________|________________|
| Classification | | | | |
| of establishment |Unrefrigerated| Refrigerated |Refrigerated or| Relative |
| | spaces | spaces |unrefrigerated | pressure |
| | | | spaces | |
| | (litres/sec. | (litres/sec. | (litres/sec. | |
| | /pers.) | /pers.) | /pers.) | |
|__________________|______________|______________|_______________|________________|
| | | | | |
| Commercial | | | |negative |
| and industry | 9.4 |not applicable| 2.4 |pressure not |
| laundry | | | |exceeding 5 Pa |
|__________________|______________|______________|_______________|________________|
| | | | | |
| Office | 7.1 | 45 | 2.4 | not applicable |
|__________________|______________|______________|_______________|________________|
| | | | | |
| Laboratory* | 7.1 | 45 | 2.4 |negative |
| | | | |pressure not |
| | | | |exceeding 5 Pa |
|__________________|______________|______________|_______________|________________|
Where gases, fumes, vapours, mists or dusts are issued in an establishment listed in this Table, the minimun rates of air change per hour must be increased so that the standards prescribed in Schedule A are complied with.
* To compute the total ventilation area and the fresh air, the occupancy rate must be one person per 10 m2 for laundries and offices and one person per 5 m2 for laboratories.
Table III
VENTILATION IN WAREHOUSES WHERE INTERNAL COMBUSTION VEHICLES CIRCULATE
The ventilation rate per vehicle must be computed as follows:

_ _
|U P V |
Q = K |__ × __ × 2 _ ________ |
|50 45 4 250 m3 |
|_ _|
where
Q = air supply in m3/h prescribed per vehicle
K = ventilation constant, i.e. 8,500 m3/h per propane or diesel-powered vehicle, 13,500 m3/h per gas-powered vehicle
P = power of the engine in kilowatts
V = volume of space available in m3 per vehicle
U = percentage (%) of use of the vehicle during a work shift.
Notes:
(1) if the percentage of use of the vehicle (U) or the power of the engine (P) is less than 50% or 45 kW respectively, these factors must be omitted in the formula which must read as follows:

_ _
| V |
Q = K |2 _ ________ |
| 4,250 m3 |
|_ _|
(2) for the purposes of this Table, the volume of space available is equal to the total volume of the warehouse minus the volume occupied by the merchandise.
(3) if the volume available is over 4,250 m3, the formula does not apply and the minimum air supply is 8,500 m3/h per propane or diesel-powered vehicle and 13,500 m3/h per gas-powered vehicle.
R.R.Q., 1981, c. S-2.1, r. 15, Sch. B.
© Gouvernement du Québec