730 Standard Operating Procedures: Switching Lime Silo when Empty.
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Questions and Answers

What is the purpose of the Standard Operating Procedure (SOP) mentioned in the text?

  • To clean the Lime Distribution Auger
  • To prepare a ‘Stand-By’ Lime Feeder to go online (correct)
  • To inspect the water production equipment
  • To shut down the Lime Slurry Feeder permanently

    • What happens if a ‘Stand-By’ Lime Feeder is placed into service without lime slurry available?

  • The lime distribution auger will get clogged
  • The Lime Slurry Drain Valve will close automatically
  • The FPW pH will remain stable
  • There will be an unnecessary dip in FPW pH (correct)

    • How can the ‘Knife Gate’ be identified?

  • It is operated by the Panel’s “Local/Remote” switch
  • It is a green-colored gate near the Silo
  • It has a red handle located on the East side of the Lime Distribution Auger
  • It is directly above the Lime Slurry Feeder and is operated by its 12” diameter wheel (correct)

    • Where is the Panel’s “Local/Remote” switch located?

    <p>In front of the Lime Feeder Panel</p> Signup and view all the answers

    What does opening the ‘Knife Gate’ do?

    <p>Allows the flow of lime from the Silo into the Lime Distribution Auger</p> Signup and view all the answers

    Where is the Lime Slurry Drain Valve located?

    <p>On the West side of Feeders AO1and AO2, and the East side of Feeder BO1, and on both sides of Feeders AO3 and BO2</p> Signup and view all the answers

    What will happen if the Drain Valve is placed in the Horizontal position?

    <p>The Feeder Tank will drain</p> Signup and view all the answers

    When should the Button labeled Auto/Pre-Start be pressed?

    <p>When the Slurry level is at 15 inches</p> Signup and view all the answers

    What should be done when the batching sequence begins?

    <p>Place the Slurry Tank Drain Valve in the vertical position</p> Signup and view all the answers

    When should the slurry tank be drained again?

    <p>At the end of the batching sequence</p> Signup and view all the answers

    How many times should the Lime Slurry Tank be drained/filled before placing the Lime Feeder into service?

    <p>3 times</p> Signup and view all the answers

    What should be done after filling up the Lime Slurry Tank 3 times?

    <p>Place the “Local/Remote” switch into “Remote” and notify the Control Room Operator</p> Signup and view all the answers

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