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JunHyeok, So, you are going to design a system where multiple units can be operated in parallel with each other (synchronized together) in Isochronous Speed Control? Let me know how that works out for you, okay? You might try looking for information using the search term "Isochronous Load...

Makster, Trip Log Live data is pretty coarse; as such it isn't always the best for trying to understand fast events. I have hidden all the irrelevant columns of data in the worksheet I downloaded, and looking at DWATT, DWATT1 & DWATT2 and DFREQ I just don't see frequency decrease you described...

Makster, Can you attach the P&IDs of the Lube Oil and Trip Oil system? Can you tell which control system is being used on the said turbine? Can you tell what the load of the ST was doing during this event? Do you have any fuel flow data for the said turbine? Do you have any SRV servo-valve...

bluecaribou521, I'm going to offer this. A PLC can't directly understand speed or pressure or temperature or position. It can only understand bits and bytes converted from information that is either a variable voltage or current signal. The variable voltage or current has to be proportional to...

AshutoshMehndiratta, [I am completely joking when I say the English language is so beautiful with respect to words and terms such as 'bump test.'] OOHHHHH! You were referring to THAT bump test, the one where after the unit is reassembled and prior to trying to start the unit and accelerate it...

AshutoshMehndiratta, This is Control.com. Occasionally we answer questions that are more mechanical in nature--because controls uses or controls mechanical devices (in many instances). This is pretty much strictly a mechanical question. Having said that, when I think of or am asked about a...

Nikhil vaghela, Again--a picture is worth many, Many, MANY words. Attach a picture of the SOV and control valve. Use a thicker walled tubing. The only reason NOT to use a thicker walled tubing would be if the decreased ID of the tubing (because of the increase wall thickness) would act as some...

Sabasnm72, Sometimes, quite often actually, when things fail (especially electronic things) they just suddenly and without warning cease working. It would be most helpful if you would provide information about the manufacturer and model number of the driver module, what you have done to...

AnilU21, When I hear heat rate used in relation to a power (electrical) plant I think of the relation of energy input (in Btu) to energy output (kilowatthour). When I hear exhaust mass flow (-rate) in relation to a gas turbine I think of exhaust heat and flow into an HRSG from the gas turbine...

Have you replaced the driver module?

AnilU21, You--and the OEM--are bound by the terms of the contract. There's nothing we can do to get the information you feel you are due. You, and possibly your the lawyers which represent your Company are going to have to review the Contact which you signed with the OEM and see what they are...

MRasool, I don't respond to DMs/PMs through Control.com. The big benefit of a World Wide Web forum like this is that MANY people can get to see the questions and responses and exchanges and learn from them. Going off-line, which some responders are often wont to do, defeats that purpose...

JoshD, That's quite an espresso set-up; I can understand why he enjoys his espresso so much! I was envisioning something pushing up from the bottom; but that doesn't have to be the only solution. Something pulling from the top might also work. The problem with not having a geared mechanism to...

Nikhil vaghela, I believe you said this was for dry, instrument air service. I'm not a metallurgist, so I can't comment on what material might be best or even better. If you don't have a need for high flow-rates (such as for opening or shut-off or control valve position changes), I would...

Nikhil vaghela, Thanks for the photo! It does, indeed, help a lot. When I see damaged tubing like this (and I think some part of this homemade "fitting"--a nut--is missing), most often I find it is caused because a backing wrench was not used when loosening or tightening the "fitting." It's...

Sorry; the correct publication number is: GER-3620 Here's a link to a WWW file location: https://www.ge.com/content/dam/gepower-pgdp/global/en_US/documents/technical/ger/ger-3620n-heavy-duty-gas-turbine-operationg-maintenance-considerations.pdf (Any misspelling in the link is not mine!);)

Nikhil vaghela, You can attach or include photographs and other electronic files/info to control.com threads. One picture can be worth a thousand words. We really don't have any idea about the problem you are experiencing, and so a clear photo (and maybe a few words, if necessary) would be...

Mahammedibr752, Well, you didn't supply the CPD transmitter scaling.... For both the transmitter itself, and the input scaling of the Mark*. And, how recently was the CPD transmitter calibration verified to be in specification? (I'm presuming a single CPD transmitter; there may be more than...

abdullah, Lean-Lean Negative is Lean-Lean, just slightly above the point at which the unit has to get to in order to be able to transfer back into Premix Steady State later. If you operate only in Lean-Lean Negative and then want to or need to transfer quickly into Premix Steady State, you...

Add: Neglect. Poor design.