Recent content by waltrobinson

Hi Jolek, Thanks for the pictures. That is something I've never seen before. I'm assuming the TC goes through the outer piping and is either in the air space outside the crossfire tube or it contacts the crossfire tube to read the crossfire tube wall temperature. Do you happen to know which...

CSA, I agree with everything you say. I also have seen flashbacks just after operation on liquid fuel. At that site, after a short time operating on gas fuel the flashbacks would stop occurring, until the next time running on liquid. But this doesn't seem to be a flashback issue but just an...

Hi Jolek, Thanks for your reply. I can assure you that not all "E" class DLN-1 GE type turbines have crossfire tube TC's. I have never seen crossfire TC's and I've worked on a lot of "E" class units on different sites. Also, in my experience burned crossfire tubes are not a classic "E" class...

Hello again, Looking at a Mk-V CSP, the TTRX value is the minimum of TTRXS, TTRXP & TTKn_I, so I believe the TTXM values we are seeing are OK and from what you are saying above it looks like TTXM is trying to follow the isothermal line. Another question; when the instability happens is it a...

Let me try to take a stab at this and then CSA can correct me where I go wrong. (No doubt that he is smarter than myself) I'm kind of a Mk-V guy so my references are to Mk-V units and tools. I hope you can translate to Mk-VIe. The alarm "Backup reference temp active" alarm means that TTRXP...

Not to get in the middle of things, but I thought I would add just a bit. Having any thermocouples on crossfire tubes is VERY UNUSUAL. I have never seen it and I have worked on many Frame 9E DLN-1 units. I don't know where they came from and would question their need. I am assuming you do not...

Seconding what CSA has said, my memory of the Frame 5 ratchet is that it works much harder than what we are seeing. The turbine shaft seems to be coasting on once the forward stroke stops. It almost looks like it might not be turning the full rotor during this test. (?) What I have found to be...

Hi, To answer your questions, one <G> is connected via arcnet to the <C> core, and the second <G> is connected to the <D> core, also via arcnet. Each <G> has a connection to a WDPF DCS with an Ethernet connection. The connection is designated as "ETHERNET coax cable 10 Base T" and goes into...

>Thanks for the explanation. This site does not have an OSM. >On the ArcNet they only have one <I> in the PEECC connected >to <C> core; a second <I> in their control room connected to ><C> through a fiber link; and two <G>'s in the PEECC >connected, one each, to <C> and <D> cores. *****...

Hi, Thanks for the explanation. This site does not have an OSM. On the ArcNet they only have one <I> in the PEECC connected to <C> core; a second <I> in their control room connected to <C> through a fiber link; and two <G>'s in the PEECC connected, one each, to <C> and <D> cores. Thanks.

Hi Gentlemen, Regarding the added input to the <C> core, it is a 4-20 ma signal from a PLC and powered by that PLC. The signal comes in to the <C> core on the TBCB card (location 7) as a two wire connection, landed on terminals 35 & 36 (POS & NEG) and configured as C_C_MAI26 in the...

CSA, Sorry to be so long replying. There's been a lot of hypothesizing about this issue and I also managed to squeeze in a short vacation. :-) You are correct that the two posts put in about the same time do refer to the same unit and issue. I was not aware that the other gentleman was...

I think the utility you are referring to is CONSTCHK.EXE which will give you the current values of constants in RAM, PROMs & CONST_Q. Very handy to run before downloading new software.