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niazbibiyana, We haven't heard from you in a long time; welcome back! Axial position is important because it can tell the operator and mechanical department about the condition of the thrust bearing and runners. If the unit thrust is too great (in the active direction) then the seals in...

Your question isn't really clear. The Mark VI and Mark V don't speak OPC, but many of the GE HMIs do (it's primarily a CIMPLICITY function, or, if you have newer GE HMIs, a ControlST/WorkstationST function) that can be used to exchange data and commands using OPC. You should ask the supplier...

ELVIN APONTE, This is what I have from a steam turbine Mark V CSP:<pre> L4EXO L30EX_ L2EX_ L4EX_ FF_CMD L14HF TRIP ON_TD STRT_SS ------|/|-----| |-----|/|-------|/|--------------------( )</pre> The Mark V communicates with...

Hira/RameezAbrar10, >1. It is to be noted here that the range set in Mark-VI >logic for this input is -1MW to 35MW. Even if the channel >fails, (only R core diagnostics, out of the RST cores shows >the channel as unhealthy) it is supposed to be considered >unhealthy and disregarded as per...

Isulamu, Great idea--but there are no tools to do that with. When you uploaded the .ap1 files, they probably overwrote the ones on the GE Mark V HMI. I hope you made a backup of the existing.AP1 files before you started uploading; the one set of files that don't have .SRC files are the I/O...

A couple of things in retrospect.... The post should have been addressed to mechnub, not kwaku, who was spot on with the possibility of liquid from the AA Precooler. Also, there was mention of an emulsion of oil and water in the original post, and it's not clear where that emulsion was...

Overspeed gets my vote, far and away. An overspeeding turbine can literally fly apart--throwing turbine blades/buckets through the casing, through walls, into and through piping (steam piping; fuel piping; etc.), and into people unfortunate enough to be in the vicinity. Usually, when a...

KRManish, That's a pretty ambitious plan. The two most ambitious parts are getting the generator terminal voltage to start so low (1 kV), and getting the output of a Frame 9E to be stable at 0.3 MW, whether in Isochronous- or Droop speed control mode. I think it's going to take some pretty...

kwaku, Use the Atomizing Air P&ID to troubleshoot the problem. There should be an isolation valve (typically solenoid-operated) upstream of the Booster AA Compressor, and a check valve downstream. The Booster AA Compressor should be physically above the Main AA Compressor which should make it...

Isulamu, GE did provide reverse compilers with the early Mark V operator interfaces (the ones called <I>, which ran the IDOS operating system) for the Table Files and CSP files, but they were frequently misused and caused a LOT of problems. So, when the change was made to MS-Windows-based HMI...

Dear, Safety. So, what are your safety concerns, specifically? Because producing, storing and distributing hydrogen seems pretty risky, not to mention the risk of leaks into a hot Load Compartment or a collector where there have been known to be a spark or three. And the amount of...

Ayed, Air or hydrogen? Hydrogen or air? For a LOT of equipment the choice was dictated by environment/atmospheres on the site. For example, dust and or fine sand; H2S (hydrogen sulfide); high humidity; etc. Another factor is the availability of space for the generator and the space...

RameezAbrar, Is the Mark VI SIMPLEX or TMR? What are the Diagnostic Alarms being annunciated for the dwatt_1 input card on the Mark VI? (These are checked using Toolbox.) What other Diagnostic Alarms are being annunciated on the Mark VI? Does the Mark VI-controlled unit have DLN or...

TMAT, Nothing too glaringly wrong with this simple explanation. The thing to remember is synchronous generators are really pretty dumb--they just convert torque to amperes (in the same way that motors convert amperes to torque). It's the governor of the prime mover (the TMAT?) that has to...

Actually, oil combined with dirt and dust is conductive and has been known to cause grounds. More than likely, though, the problem is with the cable between the pick-up and the junction box--or with the way the shield drain wire is grounded. A lot of those cables had a very ... poor ...

If I recall correctly (I don't have access to any Mark VIe documentation at this writing), the UCSA uses a FLASH memory card, which can be removed. One can remove the memory card, put it in a FLASH memory card reader connected to a PC or laptop, and then format the drive to erase all the...

Gen Eng, It would seem that the generator has a "brushless" excitation system with some rotating excitation components--probably a stationary field to which variable DC is applied, and a rotating armature where AC is developed and applied to the rotating diodes that convert the AC to DC to...

han5757, Are both sensors outputs spiking at the same time?

hany5757, The choice of material--for any application--generally depends on environmental conditions in the area where the device/instrument is to be located. Does the area require explosion-proof or spark-proof fittings? Does it require stainless steel? I can tell you that GE (not...

hany5757, Not usually. How many seismic vibration sensors are mounted on Brg. #2?