WAC 296-99-080. How must continuous-flow bulk raw grain dryers be equipped and installed?

(1) You must ensure that all direct-heat grain dryers have automatic controls that: (a) Shut off the fuel supply in case of power, flame, or ventilation airflow shutoff; and (b) Stop the grain flow into the dryer if the dryer exhaust gets too hot. (2) You must ensure that each direct-heat grain dryer installed after March 30, 1988, is: (a) Located outside the grain elevator; or (b) When located inside the grain elevator, protected by a fire or explosion suppression system; or (c) Isolated by a structure with at least a one hour fire-resistance rating.