Oregon has adopted by reference the federal rules for flammable and combustible liquids (OAR 437-002-0100) and has adopted stricter than federal rules for spray finishing. (OAR 437-002-0107).
The Oregon Occupational Safety and Health Division (OR-OSHA) regulations provide workplace safety and health standards for all workers in the state.
All spray finishing operations must be conducted in a spray booth provided with local exhaust ventilation except:
- When spraying is infrequent and of short duration; or
- When spraying is a single "air brush"; or
- The object to be sprayed is of such weight or proportion as to render it impracticable to move it into a spray booth; or
- When only noncombustible or Class IIIB combustible liquids are used for spraying; or
- When spray painting is conducted out-of-doors.
Nonbooth spray areas must meet the following requirements to prevent fire or explosion:
All light switches, fans, receptacles, overhead lights, and all other sources of ignition within 20 horizontal feet and 10 vertical feet of the overspray area must be inoperative or consist of Class I, Group D, explosion-proof types.
All building construction within 20 horizontal feet and 10 vertical feet of the overspray area must consist of or be protected by noncombustible materials.
All areas within 20 feet of the overspray area are protected with automatic sprinklers, except when authorized in writing by the local fire authority.
Aisles leading to exits from the spray finishing area must remain clear at all times.
Have at least six air changes per hour of airflow.
Employees: No employees not engaged in spray finish operations are allowed within 20 feet of the spray or ...