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Okay; jacking oil pump = jop. The reason it's not "given" (used) on most GE Frame 9Es (there are a couple that do have jacking oil pumps, usually on the generator bearings) is that it's not needed for the type and size of bearings used on GE Frame 9Es, and the weight of the shaft on the...

I'm confused by this question; greatly. In general, there is nothing that prevents transferring fuels while operating at Base Load. It's just not a great idea, especially on such a large machine as a 9FA. Remember that when operating at Base Load (approximately 250 MW) that the exhaust...

Forgive me for asking, but, what is "jop", please?

> The main question is how to ensure that all cans have a flame. I'm going to defer to the I&C Department at your site, sir. They have you most well informed. Best of luck with the problem.

What Process Value laboriously tried to say is: That's the way the machine was designed. "In the old days" it was more common for prime movers to rotate at high speeds to produce the torque required or desired. Nowadays with better materials and better analytical methods (i.e., computers and...

>....but it [is] just me taking a guess. Guessing yet <b>again</b>, Process Value. The original poster, like so many others with dual fuel machines, has not taken the time to understand how simple the gas fuel delivery system is, nor how complicated the liquid fuel system is,including the...

Mark-V guy (since you're no longer a student), If the four units are already at Base Load--presumably at 50.0 Hz--what would you expect would happen if the load on the grid being supplied by the gas turbines increases? The four Speedtronics can't increase the fuel. The synchronous...

I haven't ever seen or heard of using filters on GE-design heavy duty gas turbines. Boilers, yes; gas turbines, no. The fact that this is only occurring on one out of four units is very odd. The fact that the exhaust temperature spread is not very high is <b>MOST</b> confusing. The fact that...

If your I&C department can calibrate passive magnetic speed pick-up, you need a new I&C department. Okay; so how much fuel does it take to maintain Full Speed-No Load? Do you think a combustion turbine doesn't require any fuel just to get up to and maintain rated speed? So, if there's no kwh...

You asked a couple of questions I didn't address. GE uses Reuter-Stokes Flame Trakkers which are usually much better at detecting flame. I say usually because there have been a couple of occasions when replacing Honeywells with them hasn't improved the intensity, and in fact has made it...

I thought this smelled awfully familiar. Zeeshan, what part of the response to the same question you posted in: http://www.control.com/thread/1303155887 did you not understand?

Yes; I contacted a former colleague who's still with O&G and he filled me in on LHE. Your comment about the turbine being much larger than the compressor is interesting. With so much air flowing through the head end of the combustor the flame intensity is probably going to be lower than with...

I'm going skip right past the LVDT calibration business and ask first, how does one calibrate a passive magnetic speed pickup? Next, what makes you believe that the fuel flow-rate at 10 MW is "high"? Last, <b>WHAT ARE THE FUEL PRESSURES OF EACH COMBUSTOR AS MEASURED USING THE MANUAL...

Also, are the flame detectors cooled?

I did not think I would ever say this, but there's <i>almost</i> too much information here. But, I am not familiar with the acronym LHE. I'm going to guess (because I like guessing some times) that it's some kind of low hydrogen fuel that requires conventional combustors and that when the...

The synchronizer uses voltages from Potential Transformers, sometimes called relay or metering transformers. One set will need to be connected to the generator output leads (busbars), and the other set will need to be connected to the "bus" or line leads (busbars). The synchronizer can be...

By the way, a "jumping up and down" condition is often referred to as fluctuating. A Speedtronic panel can accept either grounded or ungrounded T/C inputs, so that shouldn't be the problem. You say that the pad where the problem T/C is located was found to be "broken". Does that mean that...

What have you done to try to troubleshoot the problem? What were the results of your effort(s)? What is the #3 bearing drain temperature? Has it increased or decreased or remained the same at similar loads over time? Does the lube oil header temperature remain relatively constant during...

> The most likely cause is that the FSRMIN control constants are not set > correctly for that speed range. As is the GE way, there is Minimum FSR, and there is Minimum FSR. One is a Control Constant, and the other is a calculated value, based on current speed. You need to look through the...

Is this a new unit being commissioned, or is this occurring after a maintenance outage, or is this occurring as a new turbine control system is being commissioned on an older unit? (There's commissioning, and then there's commissioning. Please, when posting provide as much information as...