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grajesh, > What would be the advantage for upgrade? The biggest risk is if the PCs are ever connected to the Internet they are vulnerable to viruses and malware. I'm told even short periods of Internet connectivity can result in viruses and malware as they search out machines running the...

barswann, The likely reason the HMIs are still using the original ARCnet cards is that there is no current version of ARCnet card being manufactured currently which is compatible with WorkstationST. You should be working with the supplier of the upgraded HMIs to resolve this problem. You...

dontknowman, The discharge pressure ratio of the Main Atomizing Air compressor when operating on liquid fuel and the bypass valve is closed is approximately 1.3 (absolute) (that's times the CPD, in absolute pressure). When operating on gas fuel with the bypass valve open, the Main Atomizing...

rohan_ram, About the only time this might have an effect on "thrust" would be when the unit was at zero speed, or on cooldown (hydraulic ratchet; slowroll; turning gear). I would venture to say that any intentional difference in height between the turbine and generator would be to minimize...

Obedia_pass, The "easiest" way to check to see if axial compressor bleed valves are passing (leaking) is to use an infrared heat sensor and check the temperature of the piping. When the bleed valve is closed and there is no flow through it, the piping before and after the valves should be at...

niazbibiyana, Your problem with high initial gas fuel flow-rate is not clear--because you didn't say precisely when it occurred. And, really, based on the information provided it has nothing to do with DLN 2.0+--most GE-design heavy duty gas turbines all start relatively the same regardless...

Amr1589, I absolutely, positively <b>DO NOT AGREE</b> with your assessment. However, you are reminded--if the unit isn't under any warranty or LTSA (Long Term Service Agreement) the owner of the equipment, through their operators/operations company, are free to make or have made any...

SM, If this is a GE-provided managed switch, I would be EXTREMELY reluctant to change any settings without GE's concurrence. If I understand Ethernet networking, something that is Gigabit compliant is also "backwards"-compliant, so it would work with 10-Base-T cards. Are you sure you're...

SM, I have no clue about the networking issue concerning the managed switch. Are you sure you're plugged into a PDH port? If the ALE111 appears on the original Network drawings, it should also indicate which port it should be plugged into. Some managed switch set-ups required certain NICs/IP...

Gener, I think we're kind of "uncharted territory" for operations, as, again--it's generally regarded that there isn't a direct correlation between purity and cold gas temperature. But, as was said above, with a large machine and a lot of volume it seems likely there would be some relation...

TurbineJunior, I was hoping MARKVI would respond to this, but having looked up P2V i think I now understand the issue. > I believe my issue is not having a spare GE dongle to use on this spare computer, > therefore TCI can not communicate. There is a proprietary MS-Windows service...

Okay; I gotta ask. To the person who gave a Thumbs-down, indicating the response was not helpful: What was not helpful about the response versus the questions that were asked? You can post your reply as Anonymous, but I would like to understand how the response could have been better, or...

Amr1589, This bit of "logic" (a control philosophy, really) is a carry-over from non-F-class gas turbines which had Accessory Gear-driven (mechanically driven) Main L.O. and -Hydraulic pumps, and most had AC motor-driven Auxiliary L.O. and -Hydraulic pumps (not all non-F-class gas turbine had...

barbican, We presume by "feeder breaker" (sometimes called the "tie" breaker) you are referring to a breaker downstream of the two genset generator breakers that connects the output of one or both of the gensets to a grid or large load. And, further, we presume there is no transformer on the...

elomoon, A colleague pointed out to me that I didn't properly read your post--I was mistakenly referring to a GE-design Frame 9E heavy duty gas turbine (which has three bearings) and your post was regarding a GE-design Frame 9FB heavy duty gas turbine. I apologize for the mistake; I endeavor...

I need to qualify my answer--I'm referring to a single-shaft combustion turbine which may be directly coupled to a generator, or may be coupled through a reduction gear assembly to change the RPM of the turbine to that required by the generator. A minimum of two speed sensors are usually...

Maythem, Excellent reply.

elomoon, Your post is completely unclear. There is usually only one velocity ("seismic") vibration sensor mounted on the #2 bearing drain pipe (it's too hot to put sensors on the #2 bearing cap). Seismic sensors measure velocity (mm/sec). The typical device signal name for the #2 bearing...

Gener, Hydrogen is much better at transferring heat than air--that's why one of the biggest reasons it's used for generator cooling. However, in my personal opinion--because I've never trended cooling and H2 purity--the relationship between them is very small, especially considering the...

SM, Is this communication link something you're trying to establish for the first time, or something that was working in the past and has stopped working?