Don Henry Power Center Controls Replacement HU 2026-41

Location:	Nebraska
Posted:	Apr 8, 2026
Due:	May 20, 2026
Agency:	City of Hastings
Type of Government:	State & Local
Category:	16 - Aircraft Components and Accessories
Publication URL:	To access bid details, please log in.

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DON HENRY GAS TURBINE START UP

If the computer mouse sticks, hit the windows key:

Prestart Checks:

1. Verify the main gas valves (gray valves southeast of Dispatcher Control Room) and pre-

filter gas block valve (east side of east outer shed) are both OPEN.

2. Open all louvers in Auxiliary Compartment and outer sheds (east and west).

3. Diesel Engine oil level (dipstick on east side)

4. Diesel Engine fuel level (level gauge under east platform)

5. Cooling Water head tank level (small door on east side)

6. Verify P2 vent valve is open (silver-handled valve in the Stop/Speed

Ratio Valve and Control Valve compartment, pictured at right).

7. Verify heaters are working:

o Auxiliary and Combustion Compartments’ heaters working

o 23G breaker closed (Generator Auxiliaries Compartment)

o Bearing 3 heater plugged in

Factory Talk Program:

1. Before starting anything from the computer, close the Factory Talk View program and re-

open it. This will restart the trending macros that have been problematic lately.

2. Silence/reset the HMI Communication alarm that comes in on the OIT panel behind you.

3. If you have to log into Factory Talk, the username is myron and the password is gt .

Auxiliary Equipment:

1. Start Auxiliary equipment (unless it’s an emergency the Auxiliary equipment should be

started several hours before starting the Gas Turbine).

2. Check oil flow sight glasses for flow, look for oil leaks, and check main gauges panel.

3. Test running the Diesel Engine in cold weather is no longer necessary.

Starting Auxiliary Equipment

Start Auxiliary equipment (Aux Lube Oil Pump & Hydraulic Ratchet) from Factory Talk or SCADA.

To start them from Factory Talk:

1. Go to Turbine control tab

2. Operation Select: Off

3. Master Control: Start

To start them from SCADA:

1. From the main page select the GASTRB

2. Turbine Auxil start/stop

3. You will get a pop up, press Start

Turbine Control Panel Settings

1. Determine start up mode to be used.

a. For starting using SCADA the Operation Select needs to be in Remote.

b. For Factory Talk the Operation Select needs to be in Auto.

2. Synchronizing: the generator will synch itself if Synch switch is in Auto (on Synch Panel).

3. Fuel Select: select Gas (liquid fuel lines are disconnected and cannot be used)

4. Start mode select: Normal

Generator Control Panel Settings

1. Select Droop for Mode Control and AVR (Auto) for Voltage Regulator Control.

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DON HENRY GAS TURBINE START UP

DC Oil Pump Pressure Decay Test – Complete Once Per Month for Insurance

Check back through the logbook. If the Pressure Decay Test hasn’t been done yet during this

calendar month, perform it now:

1. Go to the Historical Trend page in the Historical Tab.

2. At the top of the page, turn “Data Logging” ON.

3. Right click on the page and go to “Chart Properties” (bottom of the pop-up menu).

4. In the “General” tab, change the refresh rate from 1 sec to 100 ms.

5. Then click on the “X-axis” tab and change the time span from 3 days to 10 min.

6. Go to Ratchet Scheduler Page (in the Maintenance Tab) to enable emergency lube oil

pump test.

7. Click DC Pump Enable; the indication should turn red.

8. Go out to the Main Gauges Panel. On the west side of the panel, toward the top, there’s a

black-handled valve. SLOWLY open this to bleed the Lube Oil pressure down in order to

test the DC pump standby start. The valve should only open about one round for the test.

Close the valve after the DC Pump has started.

a. The DC Pump should start when the pressure is down around 9 or 10 psi.

b. If there are two people present, one can watch the Pressure Decay Test screen

while the other manipulates the valve.

9. Press F1 to print the lube oil trend. Place the print-out in the “DC Oil Pump Pressure

Decay Test” folder (filing cabinet, top drawer).

10. Log the pressure decay test, along with the time and the pressure when the DC pump

started, in the log book.

11. Change the refresh rate back to 1 sec, the X-axis back to 3 days, and turn Data Logging

OFF when the test is complete.

12. On the Ratchet Scheduler page, disable the DC Pump Test and verify that the DC Pump

shuts off.

1. Login to the internet-capable computer (east of entry door) with your personal username

and password.

2. Double-click the “WebSurv” icon on the desktop (left side of screen, 4th from top).

o Username: donhenry

o Password: Dhpc@H@stings1

o This username and password are only for use at Don Henry

3. Click the GENS button (2nd column from left, near the bottom).

4. Use the DHPC GT box at the top right of the screen.

o You won’t see a “Scheduled Interchange” (MW load setpoint) right now, but you

should within several minutes after the unit comes online.

5. Open the 100 Hour Timer Countdown video link in the DH Startup Folder (middle of

desktop) to keep the computer from logging you out during periods of inactivity.

o Open the video in a new window. If it opens as a different tab in the same window

as WebSurv, drag the tab down with the mouse to move it to its own window.

6. Position the screen so you can see it from the Factory Talk station.

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DON HENRY GAS TURBINE START UP

Starting the Gas Turbine

1. Call the NDS Dispatcher (ext. 3597) ~10 minutes ahead of time to verify that you are

clear to start Don Henry.

a. Ask the Dispatcher to place the Tapchanger in MANUAL.

2. It takes ~12 minutes for the turbine to speed up and the generator breaker to close, then

another couple minutes to rise to minimum load. Time the startup so Don Henry is at

minimum load at the start of the hour it is supposed to be on.

3. Select the Turbine Control tab.

4. In the Start Mode Select window, select Soft.

5. In the Turbine Control Panel window, under Operation Select, select Auto.

6. Under Master Control, select Start.

7. A pop-up with red lettering will ask if you are sure you want to give the gas turbine a

soft start; click START.

a. Diesel Engine will turn ON, clutch will engage, and the Warmup timer will start

counting down.

b. When the Diesel Engine countdown is done, the turbine will start speeding up.

▪ RPM indication on bottom footer

▪ Shaft Speed % on Turbine Summary page

c. At ~20% speed, the gas valve will OPEN, and #2 and #3 Flames will come ON.

d. At ~70% shaft speed, the Clutch will disengage.

e. At ~95% speed, the Inlet Guide Vanes (IGV) will OPEN, and the Compressor

Bleed Valves (CBV) will CLOSE.

f. Approaching 100% speed, you will hear the excitor energize behind you.

g. At 100% speed the Generator Breaker will close, and you will be online.

h. After the Gen Breaker closes, the MW output will quickly climb to ~5 MW.

i. Auxiliary Lube Oil pump will stop after generator breaker closes.

8. As soon as the unit is online, go to the Stop/Speed Ratio Valve & Control Valve

compartment (east side of Auxiliaries Compartment) and CLOSE the P2 vent valve.

9. Follow the Scheduled Interchange load setpoint from WebSurv.

o If this doesn’t appear within 5 minutes of starting, call the Dispatcher (ext. 3597).

Adjusting Load

1. On the Turbine Control page, select “Megawatt Control Enable”.

o Speed Control is for running Don Henry from SCADA; MW Control is much

easier for running it from Factory Talk.

2. Either click the Raise button until you reach the desired megawatt setpoint or enter a MW

setpoint Target and push the Enter key.

3. If megawatt communication with SCADA is out, notify NDS Dispatcher when you adjust

load. If in doubt, ask the Dispatcher whether you should or not.

4. If you are taking the Generator above 22 MW, select Base under Load Select in the

Turbine Control Panel.

Graphics to Watch

• Vibration Monitor

• Startup Trend

• Exhaust Profile

• Turbine Summary

• Temperature Summary

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DON HENRY GAS TURBINE START UP

SHUTTING IT DOWN

1. Call North Denver ~20 minutes before shutting down to let them know when you plan to

be off. It takes them a few minutes to find out if we need to stay on longer.

2. Stay at dispatched load until the end of the hour you are supposed to be off. After the

RUC is done (i.e. you are no longer scheduled to make MW), start dropping load. The

downward ramp rate is 2-3 MW/min.

3. When you are at minimum load (1 MW), go to the Turbine Control Tab, and under

Master Control, click STOP.

4. A green pop-up will ask if you are sure you want to stop the gas turbine; click STOP.

5. The breaker should automatically open without any Operator action. If you were at 1

MW, it should open within seconds.

6. Verify that the Auxiliary Lube Oil pump starts when the turbine speed has dropped low

enough (when the lube oil pressure drops to ~13 psi). It will run for 48 hours, so don’t

wait around for it to turn off.

7. Verify the hydraulic ratchet begins operation after the turbine reaches zero speed.

o The ratchet runs for ~14 seconds then stops for 3 minutes. The ratchet timer

should show green and a countdown timer from 180 seconds, then will be red

while it is running.

o Do not enable the Ratchet Scheduler; the hydraulic ratchet will run itself for 48

hours after shutdown then will turn itself off.

8. After turbine has reached zero speed, retrieve and print the MW/hr reading:

a. Go to “Historical” and click “Stopwatch.” This page will only finish updating

itself after the Turbine has stopped spinning.

b. Press the F1 key to print.

c. Place the printout in the Stopwatch Folder (filing cabinet, top drawer).

9. Record the Watt-Hour Meter reading in the log book and on your log sheet.

10. Take Operation Select back to “Remote,” and verify the Sync Switch is still in Auto.

11. Verify that the Dispatcher (ext. 3597) has a Gas Turbine Status READY indication.

o If their indication shows NOT READY, Don Henry cannot start remotely.

o Ask them to place the Tapchanger back in AUTO.

12. Finish filling out the Running Log Book entry:

o Names of all on-site operators

o Start and Stop times

o If the Pressure Decay test was completed

o Final watt-hour meter number

o Any abnormal conditions or anything unusual that happened, etc.

13. Place your completed log sheet in the “Completed Log Sheets” folder in the top drawer

of the filing cabinet.

14. Leave the pipeline and pre-filter gas valves outside open.

15. Close all but one louver in Auxiliary compartment and the east and west enclosures for

winter; if summer leave them all open. Bungee strap/hook them in position open or closed.

16. Make sure all the compartment doors are shut and fastened. Make sure east and west

enclosure doors are properly closed.

17. OPEN the P2 vent valve in the Stop/Speed Ratio Valve & Control Valve compartment

(east side of Auxiliaries Compartment).

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This is the opportunity summary page. It provides an overview of this opportunity and a preview of the attached documentation.

Don Henry Power Center Controls Replacement HU 2026-41

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