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barindra75, I've seen (and heard of) a lot of slimy phenomena. But I'm not aware of any slimier phenomena. <b>Moderator fixed misspelled word. It now says similar. {{{Blush for missing it}}}</b>

waltrobinson, You're most welcome, and thank you for the feedback. Yes; there is a very strong movement towards replacing pressure switches with transmitters--and unless there are multiple transmitters with proper sequencing this can lead to a very false sense of security. (I know of one site...

Mustafa Jamal, When fluids (and most metals and other materials) are exposed to heat they tend to expand (as the molecules grow further apart). This is the entire purpose of the expansion tank of any cooling water system: to deal with the expansion of the fluid without overflow when exposed...

otised, The motor-driven L.O. pump is a centrifugal pump, and in my experience and understanding running a centrifugal pump dead-headed (with little or no flow) does not generally cause damage to a centrifugal pump. I would have to temper that remark by saying some pumps, and some fluids in...

barindra75, Do you regularly stand near the vessel (commonly called an accumulator, if your post is understood correctly)? When a question like this gets asked, one needs to provide a LOT of data and context (previous operating data; number of units running at the time; type of--and...

anonymous, What Process Alarms were active prior to this problem? What Diagnostic Alarms were active prior to this problem? If you will provide the Process- and Diagnostic Alarms we can probably provide more help. When did this problem start? After the panel was powered down during a...

zaidhrm, Every control room and I&C shop (Instrumentation & Control) should have a laminated (plastic-sheathed) A3 set of gas turbines P&IDs in the control room for operators, their supervisors and plant management to use and refer to during operation and troubleshooting. Every operator...

otised, I had another question about this statement: > As long as the pump had a recirculation line between > its discharge and any check valve leading to the L.O. > header, they could keep it running up until 14HS speed relay. I don't see such a recirculation line between the pump...

waltrobinson, There are possible options, but it's not very easy. If there's an open I/O terminal board location on <S> (one of the four smaller terminal boards below the main section of the core), it's possible, but it may involve replacing three boards (one in each of <R>, <S> and <T>). If...

My recommendation would be to be as diligent as possible in making the salesperson provide as much information as possible about the coating--how it compares to the TBC provided by GE, why it's better than GE's TBC, what the benefits are versus GE's TBC, what the life expectancy/fired hour...

otised, Thanks very much for the information! I was wondering if the Cooldown Oil Pump needed to run above approximately 30-40% speed, since it's output will be effectively blocked by the discharge pressure of the Main L.O. Pump acting against the motor-drive oil pump's check valve. As...

glenmorangie, >Have a look at http://control.com/thread/1286918605 >Why don't you use the "search" facility, there is a small >box.......... !! Actually, I did a search for piggy-back pumps and did find this thread, but it was inconclusive. I have some more information; the unit was...

bil07, Yes; there was a lot of inconsistency in terminology between sequencing and the I/O Configurator, but, if I understand the question correctly Level A and Level B correspond to FD_n_LO and FD_n_HI, respectively (if I remember that version of PROMs correctly). The two levels were...

A SSS clutch provides, basically, the same functionality as a jaw clutch (it provides some enhanced functionality, actually). So, if there's any concern about the suggested thread with regard to jaw clutches--there should be none. The logic/sequencing/application code in the Speedtronic turbine...

jameelrahman, The topic of Droop speed control has been covered SO MANY TIMES I have almost come to believe the site name should be droopspeedcontrol.com! There is a 'Search' field cleverly hidden at the far right of the Menu bar of every webpage of the desktop version of control.com. The...

control. Com has a 'Search' feature cleverly hidden at the far right of the Menu bar every desktop version webpage. For mobile versions, it can be accessed by clicking on the Control.com Menu bar selection and then clicking on 'Search.' Here's the most recent query about diesel engine...

jameelrahman, The topic of verifying the polarity of the current being applied to servo-valve coils has been covered many times before on control.com. There is a 'Search' field cleverly hidden at the far right of the Menu Bar at the top of ever control.com desktop webpage; the 'Search'...

Indoubt, Does the liquid fuel valve have LVDTs? Because one doesn't calibrate the valve, or the IGVs, or the SRV or the GCV. One only calibrates LVDT feedback. Yes; you read that correctly: It's only possible to calibrate LVDT feedback from devices that have LVDTs. Contrary to...

Siem, Unless you or someone feels it is necessary to display the value of the logic signal for the new solenoid output on a CIMPLICITY display, it's not required to do anything with EGD or CIMPLICITY. What would be important would be feedback signal from the valve to tell the operator it was...