Search results

sandeep03pradeep, Thank YOU for the feedback!

Hishoome, There have been several issues discussed here in this thread, and failures or problems igniting on liquid fuel have been covered MANY times before in other threads on control.com. There is a very good 'Search' feature at the top of every webpage (look for the magnifying glass). When...

Based on the information provided my personal opinion is: This problem is not related to liquid fuel operation. It's virtually impossible to imagine how it could be. T/Cs on the cross-fire tubes are pretty rare. Jumpering T/Cs on the TBQA of <S> was not done for voting purposes; it was done to...

My point PRECISELY!!! The data from the GE Mark* has to be converted from its format to display on the DCS. Can't happen any other way. And, often those DCS engineers don't know all the tricks of the trade when making the conversions, particularly on large numerical values. AND, they don't...

hider7777, I'm beginning to believe this turbine doesn't have either a GE Mark* turbine control system or a GE Mark* HMI.... Neither of which really matters--except if the unit doesn't have a GE-provided DLN-I combustion system, and then all bets are really off. Based on the information...

hider7777, Is this from a GE Mark* HMI or from a DCS display?

waltrobinson, I agree--I only know of ONE site, in a country on the coast of the Mediterranean Ocean, which had thermocouples installed in the cross-fire tubes. And that was for Dry Low NOx testing on liquid fuel (distillate; diesel). I would NOT be surprised if after that effort was abandoned...

Dear hider7777, You discussed this with a DCS engineer. I'm going to guess that you are looking at a non-GE DCS display (NOT an GE Mark* HMI display) which is supposed to be displaying information retrieved from the Mark* (via the HMI, probably). Please confirm where you are viewing the fired...

RohitChaudhary, 22 MW + 22 MW + 35 MW = 79 MW. Where did you get 84 MW? Was that before the separation or immediatley after? When you were separated from the grid, what was the load on the units at the time of separation? What was the frequency at the time of separation BEFORE you switched...

How are you going to get a suitable answer when you can't state where the project is going to be located??? Which vendor is NOT going to certify their equipment is in compliance? FAT/SAT deliverables are mandated by the contract. The contract states what is and isn't required, and quite often...

By law? You didn't say which country or region of the world this project/installation is happening in. Many OEMs and control system integrators are now charging extra for FAT/SAT services--and those prices are high. There are two reasons for this: First, no FAT/SAT lowers the cost of the job...

hider7777, On a GE-design heavy duty gas turbine with DLN-I, IBH operates in Primary- and Lean-Lean combustion modes and for only part of the time the unit is running in Pre-mix Steady State combustion state. (I don't recall precisely but I think might also only at low loads in Extended...

sandeep03pradeep, The Mark V only sends a signal to the diesel to start (it actually operates a 125 VDC contactor which sends 125 VDC to the diesel starting motor). Because it's a diesel, it doesn't need a spark or any electric means of igniting the fuel. It's the heat of compression that...

There are four (4) basic modes of combustion on a GE-design DLN-I combustion system: 1) Primary 2) Lean-Lean 3) Premix Steady State 4) Extended Lean-Lean During starting and loading of the unit to Base Load, or near Base Load, the unit starts in Primary combustion mode, then transitions to...

waltrobinson, "A picture is worth a thousand words," as they say. We asked for pictures of the cross-fire tube T/Cs, but didn't receive any. (More evidence of an agenda for this question/issue.) The last drab (or was it a drib--I've lost track at this point) of information suggested this ONLY...

Thank you for the feedback! "The most important contribution at control.com is feedback!"(TM) Everyone reading these posts--now and later--benefits from the information provided and probably even more from the feedback. So, thank you!

The P2 pressure reference is a function of the turbine speed, so if the turbine speed is unstable then the P2 pressure reference is going to be unstable and therefore the SRV position--and probably the GCV position, as well--is (are) going to be unstable. It sure seems like though that the P2...

Jolek, This is one of the things I find most frustrating about troubleshooting on control.com--the pertinent information comes in dribs and drabs, if at all (a lot of time when we ask questions we get nothing in response--radio silence; the deer-in-the-headlights look). And, I have learned to...

munny07, This is a topic which can cause much consternation at many plants.... There are basically two functions for an orifice: One is the create a small differential pressure which can be measured and used to calculate flow; this one usually has a beveled edge and is, again, primarily used...

Jolek, Thank you; it's clearer now. Almost.... You wrote: " ... if one of them senses temperature higher than CTDA + 32 DegC for about a minute, or if one of them senses overranged temperature - above value MKV able to read and goes to negative, - for 5 seconds." You also wrote: " ... I...