Wastewater Treatment Unit Controls and Operation Quiz
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Questions and Answers

Which interlock shuts down pump P5-1002A/B?

  • LALL-0115
  • LALL-0103 (correct)
  • LAHH-0115
  • LALL-0104
  • Which interlock controls the level of the oil in the Slop Oil Separator?

  • LC-0116
  • FALL-0108
  • LT-0113A (correct)
  • AAHH-0107
  • Which valve is controlled by the LC-0141 in the Equalization Tank?

  • LV-0141B
  • HC-0141A
  • HC-0141B
  • LV-0141A (correct)
  • What interlock starts the Skimmed Oil Pumps P5-1012A/B?

    <p>LT-0124</p> Signup and view all the answers

    Which control loop is responsible for maintaining the level of the chloride scrubbing wastewater in the Chloride Scrubber Wastewater Pit?

    <p>LT-0132</p> Signup and view all the answers

    What happens when the level of the chloride scrubbing wastewater in the Chloride Scrubber Wastewater Pit is high?

    <p>Pump P5-1001A or B starts</p> Signup and view all the answers

    How is the flowrate of the pumped liquid from T5-1001 maintained above the pump minimum flowrate?

    <p>FV-0122A opens to return excess flow back to the Chloride Scrubber Wastewater Pit</p> Signup and view all the answers

    Which pump(s) operate as lead and lag to protect the equipment against overfilling?

    <p>P5-1013A/B</p> Signup and view all the answers

    What is the method used for the backwashing operation of the Wastewater Filters Package?

    <p>Water backwashing with auxiliary air scour</p> Signup and view all the answers

    What is the purpose of the operator console in the DCS system?

    <p>To meet operator needs in terms of monitoring, controlling, and recording plant operation</p> Signup and view all the answers

    Which control panel(s) is equipped with a VDU (Video Display Unit) for accessing the control system?

    <p>Arsenic Removal Package, Flotation Treatment Package, and Wastewater Filters Package</p> Signup and view all the answers

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