SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT
RULE 1123 - REFINERY PROCESS TURNAROUNDS
(Adopted May 4, 1979)(Amended April 4, 1980)(Amended Dec. 7 1990)
For the purpose of this rule, the following definition shall apply.
VESSEL means any container or structural envelope in which materials are processed or treated; it does not include any container whose principal purpose is material storage.
(A) the procedure used for gas displacement or eduction;
(B) the disposition of the displaced or educed organic gases;
(C) the stage in the displacement or eduction procedure at which the disposition is changed from a control facility to atmospheric venting, and
(D) the criteria by which said stage is identifiable.
A refinery operator shall maintain a record of each refinery process unit turnaround containing at a minimum the date the unit was shut down, the approximate vessel hydrocarbon concentration when hydrocarbons were first discharged into the atmosphere, and the approximate amount of hydrocarbons emitted into the atmosphere. Such records shall be kept at the facility for at least two years, and shall be made available to District staff upon request.
Any vessel, or group of vessels, that has been depressurized to less than five pounds per square inch, gauge, shall be exempted from the provisions of subparagraph (b)(2) by the Executive Officer upon determination by the Executive Officer that the use of existing control facilities to comply with subparagraph (b)(2) is likely to damage equipment, cause the malfunction of pollution control or safety devices, or cause violations of safety regulations.