Vapor Recovery Unit Meets Regulations
During loading of motor gasoline at underground storage tanks located at our stations, the liquid introduced displaces vapors from previous loadings that still exist in the tank and those vapors generated by the current product loading. These vapors contain some volatile organic compounds (VOCs). The Clean Air Act of 1990 requires the control of VOC emissions, and the refinery's Marketing Terminal's Vapor Recovery unit meets Clean Air Act (Title 33, Code of Federal Regulations, Part 154) requirements.
Marketing Terminal Vapor Recovery Unit
As a tank truck drops (delivers) new product into the underground storage tank at Chevron stations, the vapors created during the drop are pushed back into the tank truck and stored there.
As the tank truck loads new product at the Marketing Terminal using a "bottom loading" method, the product being loaded into the bottom of the tank pushes the collected vapors into a vapor recovery hose connected to the recovery system. The Adsorb/Absorb vapor recovery unit condenses the vapors, recovering about 2 gallons of gasoline per 1000 gallons loaded product.
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 vapor recovery system |