The following are some helpful hints and tricks on Turbine Troubleshooting and Maintenance. We’ll continue to add Tips. Feel free to Contact PAL Turbine Services with an comments, questions or suggestions!

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TT – Synchronizing to the Power Grid

Subject:     Synchronizing to the Power Grid Reference: Speedtronic™ Control Systems for GE Gas Turbine/Generators Applies to:  All Marks of Speedtronic™ Mark 1 through Mark IV Did you ever ask yourself “Why is the speed setpoint set to 100.3 percent during gas turbine start-up? Why is it not set at exactly 100.0 percent for generator…

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TT – Benefits of recording “start-up” data

Ever wonder why Start-up Engineers usually record “start-up” data and plot the related curves when checking out your gas turbine? Older gas turbines (Speedtronic Mark II and earlier) usually don’t have automatic data recording instrumentation. Thus, recording of start-up data is usually done manually. Recording this data will take several plant operators or technicians. Start-up…

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TT: Compartment Door Hinges

GE gas turbine package power plants (PPP) have enclosures with access doors and removable panels. See Figure 1 above. These enclosures need to be properly sealed, so as to compartmentalize and prevent the spread of potential fires. For instance, the turbine and accessory compartments should be able to isolate any fire potentially caused by fuel…

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TT: Use of the Vibration Chart

Subject:      Use of the Vibration Chart Applies to:   Gas and Steam Turbines and Generators Rotating machinery has many things in common. Turbines and generators are rotating machines and the vibration amplitude can be measured in three different ways: Displacement (inches or mils) measured in peak to peak Velocity (inches per second) measured in…

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TT – Functional Testing After Modifications to Gas Turbines

Applies to all GE gas turbines Relates to: If I Owned a Gas Turbine and Liquid Fuel Test Rig Subject: Functional Testing After Modifications to Gas Turbines Suppose you are charged with making a modification to an existing GE gas turbine. When completed, the gas turbine should function better than it did during previous operation….

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TT – If I Owned Some Gas Turbines…

If I was responsible for gas turbines that only started and operated infrequently, but were vital to the emergency and peaking power plan for the utility, this is what I would do to assure that the units were reliable and available: On the 1st Monday of the month, I’d put the unit in CRANK and…

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TT – Liquid Fuel Test Rig

Failure-to-Fire is perhaps the single most common alarm that occurs on a gas turbine. Another way to put it, firing the gas turbine is perhaps the most difficult thing to do during a start-up. Think about all the things that must happen correctly in order to light off the machine: Diesel must start. Ratchet must…

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