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I am sure. It is not easy to understand, but I am sure. GE buy a LOT of valves and other components from Woodward these days, and I'm sure Woodward are loathe to upset the apple cart. The original contact, as you say, has expired; but a new contract permitting the sale of controls for...

While this note doesn't matter to the original poster, it is important to others who might be considering a Woodward turbine control. This is very difficult to explain, but Woodward turbine control offerings for the GE-design heavy duty gas turbine market are very limited because of...

be_anon, Thanks for the history lesson! I have only had the good fortune to tinker with a Mark I in a "lab" setting, and have never worked on one in the field, nor replaced one with a newer Speedtronic panel. I've also never heard of a liquid fuel flow divider without speed pick-ups. I've...

control.com has a 'Search' feature cleverly placed on the far right side of the Menu bar at the top of every control.com page. You should always search the site for similar threads and questions as there are a large number of GE-design heavy duty gas turbine-related threads on this site. Try...

There is this little alarm message which is interesting: I/H Converter-Control Oil <b>FAILURE</b> Also, from the trends it seems there is an oscillation in control oil pressure, and some big swings which precede the disturbance. I don't think we have enough information to be of much...

Oh, how the plot thickens, doesn't it? If you send trends to any single person, no one else can see them. The point of a forum like this is for everyone to learn from other's problems and experience. Many people post information to free web-hosting sites, like tinypic.com or...

Brad Zuercher, If you could describe the problem you are having it might be easier to provide some information. We also don't know what version of Speedtronic panel you have, so that is important to know, as well. From my experience, there is no liquid fuel control "valve" on units...

The card did not necessarily fail because of the high temperature. The trip was caused because the cold junction compensation temperature of the one control processor was higher than the other two control processors. There is no SIFT or voting for the cold junction compensation temperatures of...

Hello, I don't have access to the Mark V Application Manual, GEH-6195, at this writing but I believe the minimum and maximum temperatures are listed there. However, as you've noted each processor calculates its own cold junction compensation. So, if one or more processors sees much higher...

Hochelaga, We would need a LOT more information to be of any help. 1) When did this problem start? 2) What has been done to troubleshoot the problem? 3) What were the results of the troubleshooting? 4) What happens to the generator frequency output during these events? 5) What...

Karen, The exhaust temperature control curve can be misleading. Remember: The exhaust temperature control curve represents a constant firing temperature. And, it has a negative slope, which means when the unit is operating at Base Load that as CPD increases the exhaust temperature will...

karen, The reason for my question was to try to understand your knowledge of the overall "system" as opposed to just the turbine and generator. As CuriousOne has said, the unit should "trip" on under-frequency--which is not directly related to the Frame 5 gas turbine, but to the electrical...

Excellent explanation, Tomy Zacharia. There have been several excellent reports on the BBC about the problems contributing to the blackouts in India. I especially liked the explanation of "leakage" which has been estimated at between 2% and 10% of load, sometimes more. Another interesting...

Thanks for the feedback! Hopefully this resolves the issue.

Karen, What do you think will happen, and why? (By the way, all gas turbines will respond the same way under the conditions you describe.)

This thread seems to be kind of all over the place. The title mentions FSSS, which I interpret to mean Flame Scanner Safety System, and there has been talk about BMSs (Burner Management Systems), fire and gas monitors, fire detectors and flame detectors, and boiler drum level control. We...

309Eguy is correct; the purpose of a low-point blowdown, sometimes also called a continuous blowdown, is to ensure any moisture or condensate is removed from the tubing. It's a very small hole, usually drilled into a small piece of 1/4-inch pipe with a tapered on the outside, and it's meant to...

I have tried searching the Internet using my preferred Internet search engine to learn something about "fastlink". I can't find anything related to a file transfer program/application called fastlink, so I can't say what that problem might be. I'm presuming fastlink is some kind of...

Many 4-20 mA devices are not limited to 4.0 mA at the low end or 20.0 mA at the high end, and if the measured parameter exceeds the low- or high limit by a small amount the 4-20 mA output will still be proportional. How small? That would depend entirely on the 4-20 mA device manufacturer's...

Its good you have a query, and not a doubt.... I have encountered some smaller prime mover-generator units, and even some very large steam turbine-generators, that use rated load for droop control rather than speed. This is mostly on units that are never intended to be operated in Isochronous...