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For spraying operations conducted within a closed top, open face or front
spray booth, Class I or Class II, Division 2 location applies to the space within 3 feet
in all directions (#1 in drawing) from the opening other than the open face or front. The
Class I or Class II, Division 2 location extends from the open face front of the spray
booth in accordance with the designations below.
- If the ventilation system is not interlocked with the spraying equipment so as to make
the spraying equipment inoperable when the ventilation system is not in operation, the
space shall extend 10 feet (#2 in drawing) from the open face or front of the spray booth.
If the ventilation system is interlocked with the spraying
equipment so as to make the spraying equipment inoperable when the ventilation system is
not in operation, the space shall extend 5 feet (#2 in drawing) from the open face or
front of the spray booth.
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