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ECS 9E, I have had trouble reading and interpreting you posts--all of them, before and now. You seem to purposely neglect responding to direct questions--such as how much flow do you see coming from the Tell-Tale Leakoff (the pipe from VA19-1 that drains into the gas turbine/oily waste tank...

Takieddine27, That's one of the "benefits" of using AutoCalibrate--it automatically changes the regulator type for an SRV. So, it's not necessary to change the regulator type for an SRV when using AutoCalibrate for any purpose when working on an SRV.

All that's required is typical tuning--a small overshoot, a smaller undershoot and and easy transition to steady-state. No overshoot could make for problems during high speed transient conditions. This LVDT dilemma is typical of many PLC-based turbine control systems--the need for converters...

richatpurba, Thanks very much for the feedback!!! All the Mark* cares about from an LVDT is that the feedback is linear as the device moves from mechanical stop to mechanical stop. And, the GE specifications say that with an excitation voltage of approximately 7.0 VAC RMS at approximately 3.0...

The general sequence of events for a liquid-to-gas fuel transfer is that when the transfer is initiated the liquid fuel forwarding pumps are started and the stop valve at that skid is opened (usually 20FD-1). This is to fill the lines up to the liquid fuel stop valve, because many times fuel...

One more question--just to satisfy the curiosity of a few of us: Are you sure the unit has DLN 2.1 combustors? I ask because for a couple of decades GE B/E-class machines only were sold with DLN-I combustion systems. It wouldn't surprise me in the least if GE (specifically, GE Belfort) had a...

Please be more specific about the amount of "leakage" and the duration of the "leakage." On your system, is liquid fuel flowing from the high-pressure liquid fuel pump BEFORE 20LPL-1 is de-energized? Finally, on your system is 20PL-1 a NO (Normally Open) or NC (Normally Closed) valve? And is...

Well, ..., I did stay at a Holiday Inn Express last night. And, I do have Android phones. And, I've been doing this for more than 35 years; I should have learned something in that time. I'm just fortunate that I seem to be able to explain things to people (well, sometimes). I always try to...

Sirtaurus12, The SRV--because its purpose is to control P2 pressure and it will go to whatever position it needs to go to in order to make the actual P2 pressure equal to the P2 pressure reference--will not "snap" open (like the GCV does) during firing. If it did that, the P2 pressure would...

KevinCanada, Thank you for the drawings; the one-line diagram is not fully visible, but what I was looking for was if the three STGs (steam turbine-generators) were all individually equipped with step transformers before the bus, and if I interpret the drawing correctly there are independent...

Sirtaurus12, WHAT ALARMS ARE BEING ANNUNCIATED PRIOR TO AND DURING THE FIRING ATTEMPT? BOTH Process Alarms AND Diagnostic Alarms. And, SPECIFICALLY, is the Process Alarm LOSS OF FLAME TRIP being annunciated when the START attempt fails? How long AFTER flame is established does the loss of...

KevinCanada, What does the control system integrator who provided the Woodward 505E's say about the problem??? What are they doing to try to help with the resolution? What has been done to try to help resolve the problem? And, most importantly, what were the results of the efforts to try to...

Lasha TPP, If this is something which started recently, then you should be looking at inputs like CTIM and CPD and the Performance Monitor inputs AFPCS, AFPAP and AFPBD. You may also look at the pressure transducer signals coming from the IBH system. You can also look at what is possible...

It would be necessary to see the program and configuration running in the Mark* at your site. 6F machines fall under the purview of GE Belfort--who has been changing long-standing philosophies and practices.

!!!IF ANYONE IS GOING TO RESPOND TO THIS REQUEST, PLEASE DO SO VIA DIRECT MESSAGE AND NOT IN A PUBLIC RESPONSE!!! (Control.com has a direct (or Personal) message capability for this purpose.)

ME42, I'm not familiar with the command for modifying/creating, verifying and then downloading topology to the VCMI. (cheedee is using an .m6b file from a different unit and I believe part of his issues are related to getting the right topology downloaded to the VCMIs.) He has been directed...

le011, I believe you are posting copyrighted material to the Internet/World Wide Web. That slide is probably from a copyrighted training manual produced by GE. Do you have written permission from GE to do distribute copyrighted material? GE are very protective of their copyrights and IP...

ahmed baktash, I only offer this information based on the information you provided. You mentioned finding combustion liner damage in the area of the dilution holes--which are usually located in the primary combustion zone. For there to be damage in that area it's pretty likely that the unit...

ALC, Okay. The Fire Protection P&ID (GE typically calls them Piping Schematic Diagrams) should give you a good idea of the relative location of the fire detectors in the load compartment of the turbine at your site. The Device Summary should list the settings of the fire detectors in the...

Was there a FIRE PROTECTION SYSTEM TROUBLE alarm before the trip?