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Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water System This presentation is designed.

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Presentation on theme: "Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water System This presentation is designed."— Presentation transcript:

1 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water System This presentation is designed to provide you the information you need to understand and operate the Circulating Water System. You should view all slides and read and study the information presented. The presentation slides are advanced by clicking on the button. You can also advance to a selected section by using the topic buttons.. Industrial Resources, Inc. Big Cajun Power Plant

2 Exit Program Major Components Component Controls Process Control System Operation System Function In this module we will: Describe the function of the Circulating Water System. Describe the flow paths and major components associated with the Circulating Water System. Describe the Circulating Water System process control loops and associated methods of control. Describe the steps required to prepare for and startup the Circulating Water System. Describe the steps taken during normal operation of the Circulating Water System. Describe the steps required to shut down the Circulating Water System.

3 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water System Function

4 Exit Program Major Components Component Controls Process Control System Operation System Function The Circulating Water System Condenses Low Pressure Turbine Exhaust Steam. Main Steam Cold Reheat Steam Hot Reheat Steam LP Turbine Exhaust Condenser Circulating Water Inlet Circulating Water Outlet Condensate PumpHotwell

5 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower

6 Exit Program Major Components Component Controls Process Control System Operation System Function Flow Path Cooling Tower Basin Circ Water Pump Condenser

7 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water System Flow Path

8 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower

9 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water System Data

10 Exit Program Major Components Component Controls Process Control System Operation System Function Review Questions What is the function of the Circulating Water System? What process is used to realease the heat from the Circulating water in the Cooling Tower? How is the Circulating Water cooled as it flows through the Cooling Tower? Click to Review When you are sure you can correctly answer these question click the Button to continue

11 Exit Program Major Components Component Controls Process Control System Operation System Function Major Components Circulating Water Pumps Cooling Tower Condenser

12 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pumps

13 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pumps

14 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pumps Valves

15 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pumps Data

16 Exit Program Major Components Component Controls Process Control System Operation System Function Condenser Circ Water Inlet Circ Water Outlet Tube Sheet Tubes Hotwell Outlet Waterbox Inlet Waterbox Waterbox Vent LP Heater Extraction Piping

17 Exit Program Major Components Component Controls Process Control System Operation System Function Condenser Waterbox Valves

18 Exit Program Major Components Component Controls Process Control System Operation System Function Condenser Data Circ Water Inlet Temperatures DP Indication Condenser Backpressure

19 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Cells Risers

20 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower

21 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Fans Risers Bypass Intake Screen Cooling Tower Fans

22 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Basin Bypass Makeup Screen

23 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Data

24 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Fans Data

25 Exit Program Major Components Component Controls Process Control System Operation System Function Review Questions Click to Review What is the function of the Circulating Water Pumps? Which Circulating Water System Valve, when open, allows a single Circulating Water Pump to supply both condenser sides? What component mounted in the channel between the stop gate and the intake structure prevents debris from entering the pump suction? When you are sure you can correctly answer these question click the Button to continue Click to Review

26 Exit Program Major Components Component Controls Process Control System Operation System Function Component Controls Circulating Water Pump Controls Cooling Tower Bypass Valve Controls Cooling Tower Fans Automatic Controls

27 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pump Suction Valve Controls A B A B

28 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pump Discharge Valve Controls A B

29 Exit Program Major Components Component Controls Process Control System Operation System Function Pump Cooling Water Supply

30 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pump Start/Stop Controls Start/Stop Soft Keys

31 Exit Program Major Components Component Controls Process Control System Operation System Function Pump Permits and Process Trips

32 Exit Program Major Components Component Controls Process Control System Operation System Function Pump Lockout/Tagout Lockout Tagout

33 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pump Discharge Valve Controls

34 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Controls

35 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Bypass Valve Control Bypass Valve

36 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Bypass Valve Control

37 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Fan Controls

38 Exit Program Major Components Component Controls Process Control System Operation System Function Fan Remote Start/Stop Controls

39 Exit Program Major Components Component Controls Process Control System Operation System Function De-icing Control

40 Exit Program Major Components Component Controls Process Control System Operation System Function Review Questions How is each Circulating Water Pump motor operated suction valve typically controlled? How is each Circulating Water Pump motor operated discharge valve typically controlled? How is De-icing of the Cooling Tower performed? Click to Review When you are sure you can correctly answer these question click the Button to continue

41 Exit Program Major Components Component Controls Process Control System Operation System Function Process Control

42 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Makeup Valve Control Make up Valve Basin Level Level Controller

43 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Basin Level Controller “A” in the grey background indicates that the level setpoint is not in automatic. “L” in a white background indicates that the operator has local control over the Basin Level setpoint. Brown arrows indicate basin level upper and lower limits. Level Setpoint Measured Flow Valve Output percent

44 Exit Program Major Components Component Controls Process Control System Operation System Function Auto/Manual Control “A” in the grey background indicates that the level setpoint is not in automatic. “L” in a white background indicates that the operator has local control over the Basin Level setpoint. Brown arrows indicate upper and lower Basin Level limits. Level Setpoint Measured Flow Valve Output percent

45 Basin Level Setpoint “A” in the grey background indicates that the level setpoint is not in automatic. “L” in a white background indicates that the operator has local control over the Basin Level setpoint. Brown arrows indicate upper and lower valve output limits. Level Setpoint Measured Flow Valve Output percent

46 Exit Program Major Components Component Controls Process Control System Operation System Function Review Questions How is the Cooling Tower Makeup Valve actuated and controlled? What does the Cooling Tower Makeup Valve Controller Output Control? Where does the Cooling Tower Basin Level setpoint come from? When you are sure you can correctly answer these question click the Button to continue Click to Review

47 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water System Operation Startup Prerequisites System Startup Normal Operation System Shutdown

48 Exit Program Major Components Component Controls Process Control System Operation System Function Startup Prerequisites

49 Exit Program Major Components Component Controls Process Control System Operation System Function CIRCULATING WATER SYSTEM STARTUP Ensure Basin Level is established and maintained Ensure Circulating Water Pumps are ready for Startup Ensure system valves are properly aligned Ensure support systems are available for service.

50 Exit Program Major Components Component Controls Process Control System Operation System Function Prepare the Cooling Tower

51 Exit Program Major Components Component Controls Process Control System Operation System Function Establish Basin Level Make up Valve Basin Level Level Controller

52 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pump Rack in pump and valve breakers OPEN each pump’s suction valve Verify motor bearing oil level’s are ok. Valve in instrument air and cooling water. CLOSE the circulating water cross-tie Circulating Water Pumps

53 Exit Program Major Components Component Controls Process Control System Operation System Function Cooling Tower Fans

54 Exit Program Major Components Component Controls Process Control System Operation System Function Align System Valves Suction Valves Waterbox Inlet Valves Waterbox Outlet Valves Discharge Cross-tie Valve

55 Exit Program Major Components Component Controls Process Control System Operation System Function Open the Cooling Tower Bypass

56 Exit Program Major Components Component Controls Process Control System Operation System Function START the “A” circulating water pump M A

57 Exit Program Major Components Component Controls Process Control System Operation System Function Check Pump Data

58 Exit Program Major Components Component Controls Process Control System Operation System Function A

59 Exit Program Major Components Component Controls Process Control System Operation System Function Close the Cooling Tower Bypass

60 Exit Program Major Components Component Controls Process Control System Operation System Function Start Cooling Tower Fans

61 Exit Program Major Components Component Controls Process Control System Operation System Function At 50 Percent Load, prepare for and start the 2 nd Circ Water Pump A M M M Cross-tie Valve B M

62 Exit Program Major Components Component Controls Process Control System Operation System Function Re-open the Discharge Cross-tie A M M M B M M Cross-tie Valve

63 Exit Program Major Components Component Controls Process Control System Operation System Function NORMAL OPERATION

64 Exit Program Major Components Component Controls Process Control System Operation System Function Monitor Circulating Water System process variables from DCS displays.

65 Exit Program Major Components Component Controls Process Control System Operation System Function Check Cooling Tower Fans

66 Exit Program Major Components Component Controls Process Control System Operation System Function De-ice Cooling Tower If Required

67 Exit Program Major Components Component Controls Process Control System Operation System Function Circulating Water Pumps

68 Exit Program Major Components Component Controls Process Control System Operation System Function SHUT DOWN

69 Exit Program Major Components Component Controls Process Control System Operation System Function Shut Down One Circ. Pump M M M M A Cross-tie Valve B M

70 Exit Program Major Components Component Controls Process Control System Operation System Function Select the Cooling Tower Fan Stop Auto Sequence

71 Exit Program Major Components Component Controls Process Control System Operation System Function OPEN the Cooling Tower Bypass Valve

72 Exit Program Major Components Component Controls Process Control System Operation System Function STOP the Operating Circulating Water Pump M M M M M A Cross-tie Valve B

73 Exit Program Major Components Component Controls Process Control System Operation System Function Secure Cooling Tower Make-up Make up Valve Level Controller

74 Exit Program Major Components Component Controls Process Control System Operation System Function Review Questions During preparation for Circulating Water System Startup, what are the four major steps involved? What position must the Circ. Water Discharge Cross-tie valve be in prior to starting the 2 nd Circulating Water Pump? During Normal Operation, how is ice removed from the Cooling Tower? When you are sure you can correctly answer these question click the Button to continue Click to Review

75 The Circulating Water System Condenses Low Pressure Turbine Exhaust Steam. Main Steam Cold Reheat Steam Hot Reheat Steam LP Turbine Exhaust Condenser Circulating Water Inlet Circulating Water Outlet Condensate PumpHotwell Return to Review Questions

76 Cooling Tower Return to Review Questions

77 Cooling Tower Return to Review Questions

78 Circulating Water Pumps Return to Review Questions

79 Circulating Water Pumps Valves Return to Review Questions

80 Cooling Tower Basin Bypass Makeup Screen Return to Review Questions

81 Circulating Water Pump Suction Valve Controls A B A B Return to Review Questions

82 Circulating Water Pump Discharge Valve Controls A B Return to Review Questions

83 De-icing Control Return to Review Questions

84 Cooling Tower Makeup Valve Control Make up Valve Basin Level Level Controller Return to Review Questions

85 Cooling Tower Makeup Valve Control Make up Valve Basin Level Level Controller Return to Review Questions

86 Basin Level Setpoint “A” in the grey background indicates that the level setpoint is not in automatic. “L” in a white background indicates that the operator has local control over the Basin Level setpoint. Brown arrows indicate upper and lower valve output limits. Level Setpoint Measured Flow Valve Output percent Return to Review Questions

87 CIRCULATING WATER SYSTEM STARTUP Ensure Basin Level is established and maintained Ensure Circulating Water Pumps are ready for Startup Ensure system valves are properly aligned Ensure support systems are available for service. Return to Review Questions

88 Circulating Water Pump Rack in pump and valve breakers OPEN each pump’s suction valve Verify motor bearing oil level’s are ok. Valve in instrument air and cooling water. CLOSE the circulating water cross-tie Circulating Water Pumps Return to Review Questions

89 De-ice Cooling Tower If Required Return to Review Questions


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