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jhon123, One can't "create" new blocks (either Primitive blocks or Big Blocks), but one can create a new rung in a CSP segment that uses either an existing Primitive block or Big Block. Have you read the chapter entitled "Editing the Control Sequence Program" in the Mark V Application...

SamySam/samysa, Thank you for the feedback!

In many of the Operations & Service Manuals provided with GE-design heavy duty gas turbines there was a GE-written description of how the UV flame detector works. If I recall correctly, it basically shorts the 335 VDC input repeatedly based on the intensity of the "flame" (UV radiation) it is...

karimhasson84, https://www.researchgate.net/post/What_is_the_key_importance_of_Variable_stator_vanes_in_an_axial_compressor_of_a_gas_turbine In my personal opinion, Jan Gorski's and Elias Tsoutsanis' definitions/comments/clarifications are the best ones. It seem the VSVs change the angle...

>Does all the contact inputs in Mark V are powered by >control system itself or they are externally powered devices >also? <i>In general,</i> the Mark V provides the power for all the discrete (contact) inputs to the Mark V. But, if you can be more specific there are exceptions to most...

karimhasson84, I failed to mention that the VSVs on GE-design heavy duty gas turbines I have seen have four stages. I do not know any axial compressor design engineers who have not retired and left the industry. There is, or was at one time, a fair amount of written information about...

samysam, >i think PTR and ETR if Energized should give alarm when >turn to logic (1) but no any evidence for that. PTRs and ETRs are DE-ENERGIZED to trip (the logic signals driving them go to a logic "0" when the turbine is to be tripped). In other words, the PTRs and ETRs have to be...

karimhasson84, I'm not a gas turbine designer (and I was hoping someone else would respond before I did), but as I wrote before VSVs (Variable Stator Vanes) serve two important purposes: they allow for higher air flows through the axial compressor (than would otherwise be possible WITHOUT the...

>but if the Turbine trip done by trip relays PTRs and set >ETRs no any alarm indicate? Under normal circumstances, if the PTRs (which are on the TCTG card in <P> with the TCEA cards) are the cause of the trip there will be an alarm (presuming the machine was configured and commissioned...

<b>Rated</b> speed is basically a function of the design of the axial compressor. ...

Iqballhud, Thank you very much for the feedback! I'm glad I was able to be of some help.

Speed is basically a function of the design of the axial compressor. GE-design Frame 5 heavy duty gas turbines were designed decades ago, before VSVs were considered for use on heavy duty gas turbines. And, a GE-design Frame 5 is physically much larger than a PGT-10/2, and trying to control...

Things are becoming a little clearer. >GE Nuovo Pignone gas turbine, Frame 9E with MK VIe. >From HMI display, it is under CCC Manual Control group which >contents four buttons: Load, Unload, Purge On and Purge Off. It seems the GE-design Frame 9E at your site drives a compressor, not a...

SamySam, A couple of people have written me to say I was not very specific about L20TV1X and L20FG1X. In the test I suggested to check the operation of the IGVs/IGV actuator/IGV LVDTs, when the unit is CRANKing you will find L20TV1X a logic "1", and to test the IGV actuator to see if it...

Iqballhud, We are glad you found control.com. However, we aren't at your site with you, so we don't know what kind of turbine you are trying to operate, what fuel(s) it operates on, what HMI display these buttons appear on, etc. A GE Mark* turbine control system can be used on many...

SamySam, It's worth noting that on most GE-design Frame 6B heavy duty gas turbines the IGV actuator, and associated LVDTs, are located in a very difficult to access location--under the bellmouth at the 6 o'clock position. For this reason, the actuator and LVDTS get very little love, or care...

SamySam, There are a LOT of problems with your replies. I can't draw (very well) here on control.com, but I'm going to try. I also don't have access to the CSP running in the Mark V at your site, but I have a good deal of confidence that the CSP I'm referencing (which is for a GE-design...

SamySam, What load was the unit running at when it tripped? What Process Alarms were present and active just prior to the trip? EXACTLY what alarms were annunciated at the time of the trip--ALL ALARMS, and their times, please. What Diagnostic Alarms were present and active just prior...

It sounds as if no one was injured--and that's the best thing about the failure! Have you reviewed the maintenance report(s) for the breaker that failed? Was there anything in the reports that suggested there was a problem with the mechanism or the vacuum interrupters? In my experience...

jahoc, The basic formula for electric power (3-phase) is:<pre> P = Vt * Ia *â3 * PF where P = Watts (or kW, or MW) Vt = Generator Terminal Voltage (Volts) Is = Armature Current (Amperes) â3 = 1.732 PF = Power Factor (a value between 0 and 1.0)</pre> You should...