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Hi madmax, "DGP" is usually the acronym for 'Digital Generator Protection' relay. A loss of DC power to the DGP would likely mean that it could <b>NOT</b> trip the generator breaker and/or turbine if there was a problem that required the generator breaker to be tripped and/or the turbine be...

Without being able to examine the sequencing running in the Mark <b>IV</b> at your site it's impossible to say for sure what's happening, but I'm pretty certain that L3IGVFLT ('IGV Fault') shouldn't be one of the conditions which would cause a 'Gas Control Fault' alarm, unless someone has been...

sandy, I would say the formula is probably roughly applicable to any GT, but that to be most accurate for a specific GT you should consult the manufacturer of that specific GT for it's criteria and formula. Every manufacturer views equivalent operating hours slightly differently based on...

> is it required when transmitter is near to sensor? How near is "near"?

Doug Toner, My bad. You DID say the scavenging rate was the same for both ends. My apologies for mis-reading the original post and missing the scavening rate into for the TC and CE. But, my confusion is that you are saying the casing purity is decreasing but you don't say what is happening...

Doug Toner, You didn't provide a LOT of information. Are the scavenging flow-rates the same at both ends of the generator? Presuming its one of the ends, which end of the generator has the low(est) hydrogen purity? Is the generator casing purity increasing or is it one (of both) of the...

khalil gaser, You are most welcome. Do consider how much you will be working away from home. And, most of all, I was very reserved about the training you will receive. If it's mechanical training you're interested in you will likely be very pleased with the training once you get into...

Ahmed, It sounds like there may be more than one Control Constant that needs tweaking. I will say this much: A decrease from 23 to 13 from firing to warm-up is high. Either there's too much fuel during firing (which may be the case), or there's not enough fuel during warm-up. And, if when...

NVK, The TCAT/TCAS/PCAA "core analog" card group was designed to replace several other cards with just a minimum number of cards. This group of cards can handle seismic vibration pick-ups (which would require a TVIB/PVIB), and thermocouples (which would require a separate TB and I/O Pack)...

field services, I've thought long and hard about replying; hope this helps. Most of what is said is applicable to just about any job interview/assessment, but GE Power & Water has some unique aspects that should be known. You will be asked some technical questions, but, really GE will...

Have you used the Toolbox 'Help' feature to see if there is some step you are missing? I have seen a similar problem once before, where a particular user (Oper) was prevented from saving changes to the .m6b file (these kinds of displays are saved to the .m6b file, and can cause there to be a...

NVK, The GE EPE (Energy Products Europe) operation (a.k.a, 'The Belfort Bunch') don't need a reason for anything they do. They just make a decision to do something and everyone else just needs to get out of their way because that's the way it's going to be done. Full stop. Period. End of...

Ahmed, First, not all units have the same settings; fuels and control valves and fuel nozzles can vary a lot between sites and machines. One can't just say, "There is a range of +/-3%" for warm-up FSR. One has to look at all the knock-on effects. Second, if the warm-up FSR is too high...

Dear kamel, Have you consulted the 'Heating & Ventilation' P&ID for details about cooling supply and venting of the #2 bearing? There should also be a drawing in the Parts Manual for the #2 Bearing Enclosure that shows a cover or not on the entrance you are referring to. I would also...

So, the sequence of events is this: --The units were all working fine --The direction of one (set of) CT(s) was changed, and then the problem started --The direction of several CTs on multiple units changed and the problem still exists. <b>What prompted the change of CT wiring in the...

randy, This is something many people have a very difficult time understanding. They assume that the microprocessor-based gas turbine control system is calculating the amount of fuel required for the amount of air flowing through the machine to produce the desired power output. But that...

GT, The next time your machine is open and the rotor has been removed, have a look at how the wheelspace T/Cs are inserted through the outside casing of the machine, through guide tubes, and into "nipples" (thermowells)in the nozzle segment. Then ask yourself, and anyone observing the...

Most gas turbines use some kind of speed control, during start-up/acceleration or during loaded operation, so fuel is controlled in relation to the speed error either trying to minimize the error or in proportion to the error (depending on the type of speed control--which varies with...

I'm going to suggest the original poster is misreading the information printed on the cable jacket. Every T/C extension cable I have ever worked on used the 'Tx' identifier on the jacket--regardless of whether it was Type K or Type T or Type J T/C extension cable. But, I agree with Rob...

Bruce Durdle, Thanks very much for your reply! I wasn't issuing a challenge; just expressing a hope that you could use your real-island experience and shed some light on this reactive power situation when operating as an island. I have a couple of questions, if you will entertain them...