Paint shops may be located in specially constructed rooms if they are separated from other operations by fire resistant walls. Avoid locating these shops near ignition sources.
When possible, paint spray booths shall be located in the paint shop. All spray booths shall be installed to conform to NFPA 33.
Spray finishing operations shall not be conducted in a building classified as administrative or public assembly unless a room is specifically designed for that purpose, is protected with an automatic sprinkler system or adequate fire extinguishers, and is separated vertically and horizontally from such occupancies by not less than two hour fire resistance construction.
Airless Paint Spraying:
Never point an airless spray gun at any part of the body. Paint can be hypodermically injected into the body by the high operating pressures.
Do not disconnect the gun from the fluid hose or the hose from the pump until the pressure has been released from the hose. This is accomplished by first closing off the main line air pressure to the pump and then bleeding off the pressure in the fluid hose by triggering the gun before disconnecting it.
When handling the gun but not actually spraying (such as while changing parts or work position), hold the gun by the grip and remove the fingers from the trigger. This will prevent the gun from being activated if the operator should inadvertently tighten his hold due to sipping or stumbling. Guns should be equipped with trigger guards and a safety lock. The lock should be in the non-operating position except when the gun is actually in use.
Check all hose connections and fittings to make sure they are tight and not leaking. The fluid hose must be designed to withstand the high pressure to which it is subjected. The hose, gun, and pressure vessel should be equipped with special fittings that are not interchangeable with low pressure fittings.
Check the fluid hose to be sure that there are no weak or worn spots. Make certain the hose does not contact moving parts of machinery, lie over or around sharp edges