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There is no special wire or cable required to connect a generator RTD to an RTD monitor or control system as there would be for example, for a thermocouple (which requires thermocouple extension wire for most applications). Most RTDs are three- or four-wire devices operating at what are...

MPAC is more correct about the alarm text file name. ALARM.DAT is the ASCII text file which lists Process- and Diagnostic Alarm text messages and drop numbers. ALARM.LST is a file that is created by running the Alarm Listing executable (ALARM_L.EXE) and is the listing of Process Alarms, drop...

Every Mark V operator interface has a file called ALARM.LST in the F:\UNIT1 directory. This ASCII text file should list every alarm, Process and Diagnostic, in the Mark V panel it was produced for. Some operator interfaces have ASCII text files called HELP_QD.DAT and HELP_BD.DAT. They may be...

And I should have consulted one of my old texts before posting. The condensate pot temperature should not be ambient temperature if it's constantly condensing steam. It's still my impression, though, that the temperature of the fluid (water) that's against the transmitter diaphragms should...

Some HMIs can be configured to save trip history files for 30 days or so, and some that were capable of this weren't. But, in general, HMIs are not for data archival and retrieval. If you know that data has been automatically saved and uploaded to the HMI after a trip, and is automatically...

Thank you for replying to all of the questions; that was very helpful. First of all, locking out an alarm <b>that you are aware of</b> that is filling up the alarm queue is good alarm management. You don't want to fill up the alarm queue with nuisance and erroneous alarms. As long as you are...

Here is a link to another thread about condensate pots on control.com: http://www.control.com/thread/1026245169 From my university days, the purpose of a condensate pot was to prevent hot steam from reaching the sensing diaphragm(s)s of a transmitter or similar device. The large condensate...

BigTom209, Many thanks for the feedback and the photo's. This is another great example of how blame is usually assigned to the control system because it's the least understood component, and with all those wires any problem must certainly be inside that panel! Again, thanks for the...

New is almost always good. Most of the time. In general. Usually. I think it depends on the design of the plant and its components and the power sale agreement (sometimes called the "purchased power" agreement) in place. Most steam turbines in newer combined cycle power plants I have...

From what I can ascertain from the first paragraph, it would seem that the 'standby' generator's prime mover governor is not working very well as it's not maintaining frequency. It's not clear if the frequency readings you provided were for loaded or unloaded operation, and what the load was if...

BigTom209, Can you tell us how the troubleshooting is progressing? Thanks!

Oil is a fluid that "expands" and "contracts" with changes in temperature. If you take an oil level reading in a vessel or container at a particular oil temperature, and then take another reading at a different oil temperature the level will appear to have changed, even if no oil was added or...

David, We know that you know what kind of combustion turbine(s) you have at your site and what combustion system you have at your site. But, you should also know that we don't know what you know and we have never been to your site. Unless you tell us. When posting to a forum like...

"Please, I need step-by-step procedure for fixing my Kymco scooter and how to paint it. Please provide example." You didn't tell us what was broken and needed fixing nor what painting method(s) are available to you nor what part(s) of the scooter are to be painted. You haven't told us what...

Congratulations on your choice of a Speedtronic. Is this a Mark IV-to-Mark VIe Migration or a complete replacement of the Mark IV with a Mark VIe? Is it a SIMPLEX, DUAL or TMR Mark VIe? Have you locked out the alarm using 'Alarm Lock'? What does GE say? If this problem started during...

When an F-class unit with a DLN combustion system is running on fuel gas, it's operating in Premix Steady State (at or near Base Load) and does not require water- or steam injection for emissions reduction. When an F-class unit with a DLN combustion system is running on liquid fuel, it...

As far as the requirements for L.O and hydraulics and Trip Oil and measurement of valve/IGV position, that's all the same. The LVDT calibration windows in ToolboxST are slightly different, but very similar. If you're familiar with LVDT calibration using Toolbox, you should have no problem...

You will have to look at the CSP of your machine to see what purpose it serves in the monitoring and/or control and/or protection of the unit at your site. Many newer GE-design heavy duty gas turbines use atmospheric pressure transmitters for extremely accurate calculation of axial compressor...

We can't tell what kind of assistance you need; you haven't provided any information that would help us to help you locate a source for assistance that you require. There are any number of companies with Speedtronic-knowledgeable service people you could contact. One of them is an advertiser...

The idea is to remove "outliers" from the calculation. You are correct in that if all of the readings are basically the same, deleting the highest and lowest will not appreciably change the calculation. A lot of sites run with failed T/Cs, and the typical failure mode is open circuit, which...