1: Start the unit from the cold start and achieve the steady state condition. Take the reading in page 3 log sheet for the specified parameters. For steady state condition, check the data for design operating condition.
Task 2: Increase the pump discharge flow to 80 tph from 60 tph.
Find out the variation in the motor amperage. Record the parameters.
Amps Before: Amps After:
Task 3: Reduce the flow to 40 tph from 60 tph and find out the FC 230 valve opening and FC 220 position. What will happen to the tank level immediately after reducing the flow to 40 tph? Take the reading.
Task 4: Find out how much flow will go through the tank drain valve if we open the drain by 50%. Note down the initial inlet flow and the final inlet flow to the tank.
FI 200 – Initial: Final:
Task 5: If bypass of LC 210 is opened by 30%, what will be the reduction in the opening in FC 210?
Initial opening : Final opening: Reduction:
Task 6: When the plant is running normal, If pump P-220 is stopped, then what will happen to the tank level? How will you reduce the level to 50%?
What will happen? ________________________________________
Level reduction: __________________________________________
Task 7: During normal running of the pump, suddenly if the pump discharge valve is closed¸ what will happen to other parameters?
Note down changes in status, valve opening, changes in the parameters.
Task 8: Shut down the unit and empty the tank in a systematic way.
Ensure that all the controllers are manual mode and the isolation valves of the control valves are in closed condition.
Answer the following:
- What are the control loops we have in this system?
- What is the purpose of having FC 220?
