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Your question is NOT clear, at least not to me. The "turbine" is being protected at all times. a. Try exhaling through a mask. Try exhaling through three or five masks. It's not easy, and it restricts air flow through your lungs. Same goes for a combustion turbine. Restricting the air flow...

A loss of flame trip in a GE-design heavy duty gas turbine with a Speedtronic turbine control system means that flame was lost before any other trip condition was detected. So a liquid fuel stop valve that closes unexpectedly is certainly a possible cause. We can't know what l20flxx does...

Well, you have provided virtually no actionable information. We don't what size machine you are working on, which bearings the vibrations increase on, how much the vibrations increase, and what happened before the problem started (like a maintenance outage, the replacement of a vibration sensor...

Thanks, Bob Johnston. And Happy Holidays to you, and to everyone!

Hello, I've been hoping someone else would respond to this one.... First, it's *NOT* recommended to operate a dual fuel unit without Atomizing Air for extended periods of time. The Atomizing Air flow actually cools the atomizing air passages and prevents hot combustion gases from flowing...

Great feedback! Thanks! Let us know how the troubleshooting progresses.

The values are not the same for every Frame 6 and Frame 7; it varies depending on the type of combustion system in use and the combustion hardware and the type of compressor and how much the IGVs are open at maximum operating angle. The exhaust temperature control reference is a calculated...

"THE" EEPROM chip is usually the chip in location U9. (By "THE" EEPROM, I'm referring to the chip the EEPROM Downloader downloads to/uploads from.) Most DCC/SDCC cards come with the EEPROM chip already inserted in location U9. It's almost never necessary to replace the EEPROM Hari has NOT...

What was happening to the frequency during this event? The power produced by a generator is directly proportional to the amount of torque being applied to the generator by the prime mover driving the generator. However, if the frequency is fluctuating when load control is selected that...

Adele Imtiaz, Please tell us what you think should be happening when FIRE mode is selected. Why are you using FIRE mode?

G.Rajesh, If you like a post, just click on the "thumbs-up" icon. If you don't like a post, click on the "thumbs-down" icon.

Acceleration Control FSR is a type of speed control. There is no speed control--of any type--when FIRE mode is selected. When FIRE mode is selected, FSR is held at FSKSU_WU for as long as FIRE mode is selected, whether that be for five minutes or fifteen minutes or sixty minutes. Unless...

Not usually, if you are referring to a liquid fuel purge check valve. Some machines have water injection purge check valves, but even a failed water injection purge check valve probably wouldn't cause a high spread when running on gas fuel, because if I recall correctly the water injection...

First, I would suggest that if the one LVDT input isn't working that you replace the terminal board where all the LVDT feedback signals are connected (I forget the name of that board at this time and I don't have access to any Mark V documentation at this time). Because, that card "fans out" the...

Sukdev, All of the above information--and more--can be found in GEH-6195, the Mark V System Guide, in the StageLink section of the manual.

Good question. What happens to the cylinder pressure when you put more fuel in a cylinder and ignite it? Right; the pressure increases. In a gas turbine the same thing happens, it's just that the increased pressure in the combustors means the "back-pressure" on the axial compressor...

Yes; it's possible. It seems you didn't run MK5MAKE.BAT to compile the changes you made to IO.ASG, then download USER to all processors (including <C>) and reboot them all one at a time. And, you will also need to calibrate the IGV LVDTs to complete the process.

G.Rajesh, Use the Signal Flow Diagrams in Appendix D of the Mark V Maintenance Manual (GEH-6195) to follow the discrete input signals from the DTBA/DTBB to the TCDA card. The signal is connected to a DTBA or DTBB card. There are three cables that take the signal to each of the three...

You have a bigger problem, G.Rajesh. If the IGV feedback is greater than approximately 34 DGA when the hydraulic pump is not running, and then it goes to 34 DGA when the hydraulic pump is running (presumably 20TV-1 is energized when the hydraulic pump is running and you're reporting this 34 DGA...

FIRE mode is meant only for testing purposes, and it is also used to dry out a turbine after an off-line water wash if it's not going to be put back on line within 24 hours of the water wash. It's <b>NOT</b> meant for extended periods of operation, and there <b>IS NO</b> speed control during...