§ 251.66 Unit Process

   “Unit process” means reactions where raw materials undergo chemical change or where one (1) or more raw materials are combined and changed into a new substance with different properties or composition.

(Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)

§ 251.67 Vapor Blowdown System

   “Vapor blowdown system” means a system for disposal of emergency and waste refinery gases consisting of a manifolded pressure relieving system to insure personnel safety and protect equipment.

(Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)

§ 251.68 Visible Emission

   “Visible emission” means emissions of air contaminants of such quantity or quality as to be seen in contrast with background.

(Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)

§ 251.69 Volatile Photochemically Reactive Material

   “Volatile photochemically reactive material” means any photochemically reactive material which has a vapor pressure of one and one -half (1.5) pounds per square inch absolute or greater under actual storage conditions.

(Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)

§ 251.70 Waste Gas Flare

   “Waste gas flare” means the combustion of waste gas for disposal.

(Ord. No. 857-A-76. Passed 6-27-77, eff. 6-30-77)