SAN DIEGO COUNTY AIR POLLUTION CONTROL DISTRICT

RULE 260.101 - DEFINITIONS
(Rev. Effective 5/1/81)

As used in this subpart, all terms not defined herein shall have the meaning given them in Subpart A.

(a) "Petroleum Refinery" means any facility engaged in producing gasoline, kerosene, distillate fuel oils, residual fuel oils, lubricants, or other products through distillation of petroleum or through redistillation, cracking or reforming of unfinished petroleum derivatives.

(b) "Petroleum" means the crude oil removed from the earth and the oils derived from tar sands, shale, and coal.

(c) "Process Gas" means any gas generated by a petroleum refinery process unit, except fuel gas and process upset gas as defined in this rule.

(d) "Fuel Gas" means any gas which is generated by a petroleum refinery and which is combusted. Fuel gas also includes natural gas when the natural gas is combined and combusted in any proportion with a gas generated at a refinery. Fuel gas does not include gases generated by catalytic cracking unit, catalyst regenerators and fluid coking burners. (Effective 5/1/81)

(e) "Process Upset Gas" means any gas generated by a petroleum refinery process unit as a result of startup, shutdown, upset or malfunction.

(f) "Refinery Process Unit" means any segment of the petroleum refinery in which a specific processing operation is conducted.

(g) "Fuel Gas Combustion Device" means any equipment, such as process heaters, boilers and flares used to combust fuel gas, but does not include facilities in which gases are combusted to produce sulfur or sulfuric acid.

(h) "Coke Burn-Off" means the coke removed from the surface of the fluid catalytic cracking unit catalyst by combustion in the catalyst regenerator. The rate of coke burn-off is calculated by the formula specified in Rule 260.106.

(i) "Claus Sulfur Recovery Plant" means a process unit which recovers sulfur from hydrogen sulfide by a vapor-phase catalytic reaction of sulfur dioxide and hydrogen sulfide.

(j) "Oxidation Control System" means an emission control system which reduces emissions from sulfur recovery plants by converting these emissions to sulfur dioxide.

(k) "Reduction Control System" means an emission control system which reduces emissions from sulfur recovery plants by converting these emissions to hydrogen sulfide.

(l) "Reduced Sulfur Compounds" means hydrogen sulfide (H2S), cabonyl sulfide (COS) and carbon disulfide (CS2).

(m) "Small Petroleum Refinery" means a petroleum refinery which has a crude oil processing capacity of 50,000 barrels per stream day or less and which is owned or controlled by a refinery with a total combined crude oil processing capacity of 137,500 barrels per stream day or less.