circ water system vo
TRANSCRIPT
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem 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
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
In this module we will:
Describe the function of the Circulating Water System.
Describe the flow paths and major components associated withthe 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 theCirculating Water System.
Describe the steps taken during normal operation of theCirculating Water System.
Describe the steps required to shut down the Circulating WaterSystem.
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Circulating Water System Function
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
The Circulating Water System Condenses Low
Pressure Turbine Exhaust Steam.
Main Steam
Cold Reheat
Steam
Hot Reheat
Steam
LP Turbine
Exhaust
Condenser
CirculatingWater Inlet
Circulating
Water Outlet
Condensate PumpHotwell
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Flow Path
Cooling
Tower
Basin
Circ Water Pump
Condenser
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Circulating Water System
Flow Path
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Cooling Tower
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Circulating Water System Data
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Review QuestionsWhat 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?
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Click to Review
Click to Review
When you are sure you can correctly answer these question
click the Button to continue
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Major Components
Circulating Water Pumps
Cooling Tower
Condenser
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Circulating Water Pumps
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Circulating Water Pumps
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Circulating Water Pumps Valves
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Circulating Water Pumps Data
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Condenser
Circ Water
InletCirc Water
OutletTube
Sheet
Tubes
Hotwell
Outlet
Waterbox
Inlet
Waterbox
Waterbox
Vent
LP HeaterExtractionPiping
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Condenser Waterbox Valves
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Condenser Data
Circ Water Inlet
Temperatures
Circ Water Inlet
Temperatures
DP Indication
Condenser
Backpressure
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower
Cells
Risers
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower Fans
Risers
Bypass
Intake Screen
Cooling Tower Fans
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower Basin
Bypass
Makeup
Screen
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower Data
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower Fans Data
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem 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
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Click to Review
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Component Controls
Circulating Water Pump Controls
Cooling Tower Bypass Valve Controls
Cooling Tower Fans Automatic Controls
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Circulating Water Pump
Suction Valve Controls
A
BA
B
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Circulating Water Pump
Discharge Valve Controls
A
B
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Pump Cooling Water Supply
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Circulating Water Pump
Start/Stop Controls
Start/Stop
Soft Keys
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Pump Permits and
Process Trips
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Pump Lockout/Tagout
Lockout
Tagout
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Circulating Water Pump
Discharge Valve Controls
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Cooling Tower Controls
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower
Bypass Valve Control
Bypass Valve
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower
Bypass Valve Control
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower Fan Controls
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Fan Remote Start/Stop Controls
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De-icing Control
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Review Questions
How is each Circulating Water Pump
motor operated suction valve typically
controlled?
How is each Circulating Water Pumpmotor operated discharge valve typically
controlled?
How is De-icing of the Cooling Tower
performed?
Click to Review
Click to Review
Click to Review
When you are sure you can correctly answer these question
click the Button to continue
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Process Control
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower
Makeup Valve Control
Make
up
Valve
Basin Level
Level Controller
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem 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
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem 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
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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
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Review QuestionsHow is the Cooling Tower Makeup Valveactuated 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
Click to Review
Click to Review
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Circulating Water System
Operation Startup Prerequisites
System Startup Normal Operation
System Shutdown
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Startup Prerequisites
CIRCULATING WATER SYSTEM
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
CIRCULATING WATER SYSTEM
STARTUP
Ensure Basin Level is established and
maintained
Ensure Circulating Water Pumps areready for Startup
Ensure system valves are properly aligned
Ensure support systems are available forservice.
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Prepare the Cooling Tower
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Establish Basin Level
Make
up
Valve
Basin Level
Level Controller
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Circulating Water Pump
Rack in pump andvalve breakers
OPEN each pumpssuction valve
Verify motor bearingoil levels are ok.
Valve in instrument
air and cooling water. CLOSE the circulating
water cross-tie Circulating Water Pumps
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Cooling Tower Fans
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Align System Valves
Suction
Valves
Waterbox
Inlet
Valves
Waterbox
Outlet
Valves
Discharge Cross-tie
Valve
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Open the Cooling Tower Bypass
START the A circ lating ater
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
START the A circulating water
pump
M
A
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Check Pump Data
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
A
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Close the Cooling Tower Bypass
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Start Cooling Tower Fans
At 50 Percent Load prepare for
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
At 50 Percent Load, prepare for
and start the 2ndCirc Water Pump
A
M
M
M
Cross-tie
Valve
B
M
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Re-open the Discharge Cross-tie
A
M
M
M
B
M
MCross-tie Valve
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
NORMAL OPERATION
Monitor Circulating Water System
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Monitor Circulating Water System
process variables from DCS displays.
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Check Cooling Tower Fans
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
De-ice Cooling Tower If Required
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Circulating Water Pumps
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
SHUT DOWN
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Shut Down One Circ. Pump
M
M
M
M
A
Cross-tie
Valve
B
M
Select the Cooling Tower Fan
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Select the Cooling Tower Fan
Stop Auto Sequence
OPEN the
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OPEN the
Cooling Tower Bypass Valve
STOP the Operating Circulating
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
STOP the Operating Circulating
Water Pump
M
M
M
M
M
A
Cross-tie
Valve
B
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Exit ProgramMajor Components Component Controls Process Control System OperationSystem Function
Review QuestionsDuring preparation for Circulating Water
System Startup, what are the four majorsteps involved?
What position must the Circ. Water
Discharge Cross-tie valve be in prior to
starting the 2ndCirculating 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
Click to Review
Click to Review
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Cooling Tower
Return to
Review Questions
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Cooling Tower
Return to
Review Questions
C
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Circulating Water Pumps
Return to
Review Questions
Ci l i W P V l
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Circulating Water Pumps Valves
Return to
Review Questions
C li T B i
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Cooling Tower Basin
Bypass
Makeup
ScreenReturn to
Review Questions
Circulating Water Pump
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Circulating Water Pump
Suction Valve Controls
A
BA
B
Return to
Review Questions
Circulating Water Pump
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Circulating Water Pump
Discharge Valve Controls
A
B
Return to
Review Questions
D i i C t l
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De-icing Control
Return to
Review Questions
Cooling Tower
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Cooling Tower
Makeup Valve Control
Make
up
Valve
Basin Level
Level Controller
Return to
Review Questions
Cooling Tower
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Cooling Tower
Makeup Valve Control
Make
up
Valve
Basin Level
Level Controller
Return to
Review Questions
B i L l S t i t
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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
CIRCULATING WATER SYSTEM
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CIRCULATING WATER SYSTEM
STARTUP
Ensure Basin Level is established and
maintained
Ensure Circulating Water Pumps areready for Startup
Ensure system valves are properly aligned
Ensure support systems are available forservice.
Return to
Review Questions
Ci l ti W t P
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Circulating Water Pump
Rack in pump andvalve breakers
OPEN each pumpssuction valve
Verify motor bearingoil levels are ok.
Valve in instrumentair and cooling water.
CLOSE the circulatingwater cross-tie Circulating Water Pumps
Return to
Review Questions
D i C li T If R i d
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De-ice Cooling Tower If Required