Table 1: Electrical Area Classifications | Solvent Recovery Equipment

Table 1: Electrical Area Classifications
Equipment Areas Classified as ClassI, Division 1 Areas Classified as ClassI, Division 2
Smaller Solvent Recovery Equipment
Capacity less than 23 litres (5 gals.).

Receiver containers are part of the equipment if not outdoors.
Within 1.5 m (5 ft.) in all directions from the edge of the equipment Within 0.9 m (3 ft.) beyond Division 1 in all directions

Up to 0.9 m (3 ft.) above floor or grade level and within 6 m (20 ft.) horizontally beyond Division 1 [1]
Larger Solvent Recovery Equipment
Capacity 23 litres (5 gals.) or more.
The room or building containing the equipment, as required in section 4.1 None
Vents Piped to Outdoors
Solvent recovery equipment vents (including safety valves) and container vents piped to outdoors.
Within 0.9 m (3 ft.) in all directions around the open end of the vent Within 0.6 m (2 ft.) beyond Division 1 in all directions
Container Fill Openings Within 0.9 m (3 ft.) in all directions from the fill opening Within 0.6 m (2 ft.) from Division 1

Up to 0.45 m (1.5 ft.) above floor or grade level and within 2.1 m (7 ft.) horizontally beyond Division 1 [2]

[1] [2] Many solvent vapours accumulate and spread near floor level because they are heavier than air.