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Hello, Based on the information provided, there are no other generators connected in parallel with the two Frame <b>6</b> GE-design heavy duty gas turbines. And, if the two GTGs are being operated in Droop speed control while in island mode AND there is some load shedding ("throw off") scheme...

Alfred MP, Sounds as if there is a problem with the GCV, either the actuator is sticking or the valve is sticking or there is s problem with L.O. quality which has resulted in a problem with the electro-hydraulic servo-valve. What control system is in use on the unit? If it's a digital...

George Avorka, This is only a limitation on SOME GE-design Frame 9E heavy duty gas turbines--not all GE-design Frame 9E heavy duty gas turbines. You (conspicuously) did not mention the type of combustion system (conventional, or DLN-I), or the types of fuels being burned by the unit(s). Both...

Also, have you seem this document: http://www.moog.com/literature/ICD/g761seriesvalves.pdf

thegroovyguru, What control system is driving the servo-valve? Who is the steam turbine manufacturer? Do the instructions provided with the steam turbine and control system say to adjust the null for stability?

techguy, If you are "restoring" IDOS and a unit-specific application to a hew hard disk drive you need to have the same AUTOEXEC.BAT and CONFIG.SYS files in the root of the C: drive. MS-DOS needs to be installed in the C:\DOS directory, and the directory structure outlined in the Mark V...

suryavine, What has the provider of the Package 4 upgrade told you about the expected heat rate output of the gas turbine exhaust after the upgrade? Have you compared the exhaust temperature of the upgraded units at the same loads as the exhaust temperature of the non-upgraded units? Are...

KalmanR, I've been watching this forum for more than ten years, and I have seen no posts about turboprop/turboshaft control systems. I suggest you use your preferred World Wide Web search engine to look for 'aircraft engine controls' or something similar. There are engines which are...

gilariver Jack, I can't tell from the post if the valve actually moves during the 'Verify Current ' test or not. If the valve doesn't move, then the test isn't really being performed. And the Mark Vs at Gil's River are TMR panels--so there SHOULD BE current (negative current to open...

Aptx4869, 1. What would be gained by increasing the lift? The purpose of lift oil is to facilitate (make it easier) for the turning gear to rotate the shaft, and to prevent bearing damage at low speed when there's little oil wedge build-up. The bearings on most GE-design F/FA-class heavy duty...

davidmcc, Thanks very much for the feedback! Keep us informed--and best of luck.

MHB, I am unable to view the files in the link; my anti-malware software is complaining LOUDLY there is some problem with the file(s). So, sorry if some of my questions could have been answered by reviewing the link, but I'm unwilling to bypass the warning and this particular anti-malware...

Obiloko4, The 'Loss of Compressor Discharge Bias' alarm is VERY bad. DLN combustion systems rely very heavily on compressor discharge pressure signals for proper control and protection, so without a compressor discharge pressure signal the Mark V is "reluctant" to allow the start-up process...

geeH, There are two basic types of speed sensors: passive (inductive) and active. Passive speed pick-ups "generate" their own power and do not require a power source to produce a signal. Active speed pick-ups require a power source to produce a signal. Most passive speed pick-ups have...

Aptx4869, I believe the "vent" is actually like a packing leak-off, so that if any liquid fuel leaks out along the valve stem it will go to the gas turbine drains tank, instead of leaking into the turbine compartment where it might contribute to a fire or explosion. Many years ago, and for...

Rajesh, CuriousOne has an EXCELLENT suggestion!!! We're presuming the HMI has an older motherboard using an IDE hard drive connection, and that it has a CD/DVD burner. You could then use Acronis software (inexpensive if not already on the HMI--and newer versions are even more powerful and...

SK, I want to preface this by saying I'm not very familiar with the LM6000 engine or packages, of which there are several. But, this is my understanding based on limited exposure and experience with a couple of LM6000 packages. The LM6000 is an aircraft derivative unit, meaning that the...

obiliko4, Always refer to the Mark VI System Guide, GEH-6421, for details of how circuit boards work. In this case, you want to be referring the section for the VCRC card, specifically the TBCI card details, and the PDM Power Distribution Module. Discrete (Contact) inputs require a voltage...

niazbibiyana, Was that person speaking specifically about GE-design Frame 9FA heavy duty gas turbines, or just "gas turbines" in general? There are, have been, and will continue to be all manner of science projects for improving performance and heat rate. But, I will maintain the...

vimal gupta, First, how old is the Frame <b>5</b> machine? The reason I ask is because many newer machines do not run the BT compartment vent fan(s) during cooldown--because running the fan during cooldown causes the axial compressor casing to cool much faster than the axial compressor...