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- PC reliability?
- Windows, real time
- PID loops
- PCs vs. PLCs
- Replacing people
- MS 'monopoly'?
- Software quality
- Where do we go from here?
- Why pay?
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Control.com member...
Member Information and Posts by 12345
What are the probable causes of a high compressor inlet pressure.
New Replies:
Some questions -
1. Please check if these are 63CS series switches or otherwise
2. what are these...
fuel change over problem
New Replies:
I have some experience on Naphtha fired units with more or less the same kind of arrangement (HSD...
Why is FSR value different when TNR value is same for 4 units?
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Good observation, but what it seems is that the TNR value you have mentioned is quite minimal. ...
GT Trip on IGV control trouble
New Replies:
The originator has a problem of IGV control trouble trip with CSGV moving down and under a prefixed...
from the Forum department...
GT giving 7-8 MW higher Load at Base load mode with same IGV opening, i.e. 84DGAWe have 106 MW, GE Frame 9E gas turbine of control system mark-IV. Before 2 months our GT tripped at 60% speed due to IGV trouble
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What I understand is that under any given circumstances it is not normal for the actual exhaust...
What is the increment/decrement rate of TNR in Speedtronic MARK IV control system
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Well that was a great piece of discussion. Some really hard brain storming to clear the facts. It...
What is "Cross Tripping" in speedtronic Mark iv controlled gas turbine?
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Thanks CSA as always for the detailed explanation. Actually I just overlooked that it was Mark-IV. ...
I have heard of TCEA cross trip which directly relates to L4_XTP. Refer your control sequence for...
from the Automation List department...
Feasibility of tripping a Gas Turbine on LUBE OIL TANK level LOW LOW
Trying to reason out why tripping of a Gas Turbine is not considered on LUBE OIL TANK level LOW LOW.
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Dear Gary,
for frame-V machines, frankly speaking, I have never heard of anything like high...
what are the different ways to vary the load angle of an alternator?
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Load or torque angle can be varied by either changing the exciter field current or by the current...
What is the effect of under frequency in steam turbine & gas turbine especially in rotor blade & casing material vibration?
New Replies:
Hi,
Underfrequency i.e. underspeed protection, is a part of protection set-up for the turbines. ...
GE Frame 5 limited below Rated Power
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With miniscule details, it is very difficult to comment. Provide more details for a to-the-point...
7FA Tripping on Low Hyd. Trip Oil pressure
New Replies:
Hi,
In addition to what has been suggested, I understand that it would be of some help to you to...
GE Frame VI gas Turbine starting ignition problem
New Replies:
Hi,
In line with the issue, I would like to state that on liquid fired units, the problem of...
What is the philosophy of Temperature control mode of GT SIEMENs V94.3A
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What I understand about the Siemens machine is - when HCO system is in use, it pushes the rotor to...
diagnostic alarm - voter mismatch L74CR in <R> processor
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QD1 is the digital I/O for the three cores and i.e. IONET connection between QD1 and individual...
The alarm by its name voter mismatch is a direct outcome of the misalignment amongst the cores...
from the power department...
logics related to emergency lube oil pump , auxiliary lube oil pump & turning gear motorexplain the logics related to auxiliary lube oil pump, emergency lube oil pump & turning gear motor for gas turbine
Spread temperature for GE Frame 6 turbine is fluctuating between 100F and 300F
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Spread programme is basically a combustion monitoring software. The accuracy of the program depends...
Our GE Gas turbine Frame VI faces frequent ratchet trouble during shut down or cool down
New Replies:
Seems to be a problem with 20 CS, when you are pressing the plunger you are ultimately forcing...
Reasons for high vibrations in turbines
New Replies:
Agreed that the case as you say is true (fluctuation in vibrations during day and night), but have...
Vibrations reasons (w.r.t gas turbines) -
1. Lube oil film failure
2. Low oil header...
generator lube oil system
New Replies:
Just to clear a few points -
1. How does the sequence proceed even after you get the alarm...
Liquid fuel line purge logic problem and it's process
New Replies:
Hi CPPGUY,
Can you eloberate on the point no. 2. I mean for changeover from one liquid fuel to...
from the Instrument department...
Need help on how to rectify faults in GE Reuter Stokes Flame scannersneed help with the flame scanners
New Replies:
Anytime while describing a problem, it is always advisable to provide the maximum number of inputs...
GE frame Generator Vibration Problem and turbine trips
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I had been through a similar problem at a site. One thing that could had been done in your case was...
Values for MARK IV Standard Control Constants
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LK86GVA1 - 7.5 DGA
LK86GVA2 - 5 sec
LK86GVT1 - 7.5 DGA
LK86GVT2 - 5 sec
These values would...
Steam Turbine Auxilary oil pump and Emmergency oil Pump problem
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From the details, you have mentioned it is extremely difficult to ascertain the cause since the...
AHOP fails to start as IGV is below minimum position.
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It is okay to disagree without being disagreeable - anonymous. I think the matter is being dragged...
Teaching a man to fish - is always a great thing but how about fishing in troubled...
IGV going below a preset value (LK3IGVF1)or over a value (LK3IGVF2) results in L3IGVFLT. L3 IGVFLT...
Difference between normal start and fast start
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The information supplied by me is machine specific and hence the constants would vary. Move...
Difference is in the start-up cycle, if you are using a diesel engine as a start-up means then the...
unknown Mark VI alarm
New Replies:
Not sure but seems - temperature switch, standby start ac fan # 2.
I am not sure if this is...
What happens when you increase the load on a generator without a governor?
New Replies:
Your query seems to be a confusing. What I gather is that you would like to know the loading...
GT seq Trb 3.src Temp control ref
New Replies:
What CSA has stated is quite true, in our csp, the temperature control reference is TTRXV6 at...
GT fuel display in "LOAD LIMIT"
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From what I understand - FSRDWCK (FSR for MW fault) comes from L30F_CTD. Also L3DWBCOKZ would...
Load Sharing Problem b/w GE Jenbacher Gas Gesets & Caterpillar Gas Genset
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Loading of a particular unit would depend on its droop factor (percentage of droop). A unit with 4...
We are running turbine in Isochronous mode and it's speed hunting from 5090 RPM to 5115 RPM while it should be fixed at 5104 RPM.
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In percentage terms - TNH variation is from 99.73 to 100.21. Check your TNKRIMN (Isochronous set...
I need copy of (DIAGNOSTIC ALARM HELP FILE )
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In DOS, in F prompt (site specific files), search for 'diagc' or try view2.exe...
Gas turbine exhaust passes to HRSG through the inlet damper in case of combine cycle and the steam production is controlled via modulating bypass damper.
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Damper closure time delay is 80 sec, hence if within 80 secs, diverter damper is not fully closed...
Any logic behind Naphtha to HSD Fuel C/o Logic linked to HITECH system !!
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Hitec additive flow is maintained generally around 60 PPM.
Logics related to C/O from Naptha...
work around for til from ge (til 1420-2r1) which can be applied to the gas turbines frame 5-6-and 9 not not valid for the turbines and controls supplied after 2003
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The question posted was not fully clear - especially the 30 min timer. But if your speed probes 77...
Calculating TNR and TNH
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TNR is turbine reference value whereas TNH is the actual turbine speed. The turbine droop function...
Gas Turbine trips on High Exhaust Temperature minutes after starting.
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Speed limiting at 2700 rpm
Considering that you have a Detroit diesel engine, I feel in your...
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