§ 251.62 Stationary Sourc e

   “Stationary source” means a source which does not move from place to place in its day to day operation.

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

§ 251.63 Submerged Fill Pipe

   “Submerged fill pipe” means any fill pipe the discharge opening of which is entirely submerged when the liquid level is six (6) inches above the bottom of the tank; or when applied to a tank which is loaded from the side, shall mean any fill pipe the discharge opening of which is entirely submerged when the liquid level is eighteen (18) inches above the bottom of the tank.

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

§ 251.64 Uncontrolled Mass Rate of Emission

   “Uncontrolled mass rate of emission” means the total weight rate at which particulate matter is, or in the absence of an air-cleaning device would be, emitted from an air contaminant source when such source is operated at its maximum rated capacity.

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

§ 251.65 Unit Operation

   “Unit operation” means methods where raw materials undergo physical change or methods by which raw materials may be altered into different states, such as vapor, liquid or solid without changing into a new substance with different properties or composition.

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

§ 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)