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I know you don't have a GE machine but below is GEs comments from their Maintenance Manual. It all really depends on how the machine was shut down and for how long. As you can see, GEs recommendations caused some industry controversies by quoting 4 or 6 hours Turning Gear for a cold machine...

I guess it depends on your software what the exact action is. I'm sure you will get some alarms. What were you thinking?

Hi, your first big problem: if you are running on HFO and your distillate has failed, is when you need to shut down. The machine should switch to distillate during the shut down to flush the HFO out of the system. If this doesn't happen you are going to have static HFO sitting in your fuel...

Depends on the country and their gas regulations. In many countries the answer is Yes. Remember the SRV is really the Stop/SRV, do you want a safety Stop valve that leaks?

GER 3571H "Performance and Reliability Improvements for Heavy-Duty Gas Turbines" can help. Email at [email protected] for a copy.

Unless something has changed dramatically recently, there is no DLN Mode for liquid fuel. I know GE were playing around with prototype Liquid Fuel DLN systems some time ago. Normally, on dual fuel machines, the only thing that you can do on Liquid fuel to reduce emissions is run Water Injection.

Drunk again when doing the replies CSA!!

Good CSA, Nice to see you asking questions for a change! Seriously, I think this is a great idea, we need more of this on this forum. Of course we will answer questions whenever we can, but people need to realise that they need to think for themselves a little more before asking.

Why are we talking about Atomizing Air?

Before posting here, this question was asked to me privately. After some explanation, it appears that he wants to do this with the machine running and only put a blank in the CPD feed line to the AA system! Obviously I said NO but it appears that he now wants a second opinion?

If you check your Control Spec. you should find the temperature to go to Premix, this is Lean-Lean positive, there also be a deadband for this setting so Lean-Lean negative is the premix temp. minus the deadband. If you don't make the transfer to Premix and/or run through to Extended Lean-Lean...

I reckon you are pretty crazy thinking about changing this setting without consulting the manufacturer. This setting is protecting all the devices using Lube Oil particularly the bearings. Why do you want to increase it anyway? Are you running near the trip point, if you are, that is the problem...

Only if you have IGV Temperature Control installed. Please read CSAs post above.

Thanks for a very comprehensive bit of troubleshooting on what looks like a pretty nasty fault. I reckon you are on the right track changing the LCC card, this troubleshooting task is going to be a process of elimination anyway. The missing I/O card error is for sure a clue, if you get this...

Drop me a note to [email protected] and I can send you a document on DLN1 which will help.

Can you give us some more detail on your erratic reading, Level, when it happens, duration?

Another great answer CSA. As you say the leak test seems a great idea but some of the pass/fail parameters set by GE are a bit crazy. For example, on a Frame 6 DLN1 machine, Test #1 was only allowing 1.5 psi leakage across the SRV in 30 seconds, pretty hard to achieve.

Of course it will if the demand is greater than the available grid capacity available. I live in the Philippines and they use the word "brownouts" here because, when the voltage reduces, the old fashioned incandescent light bulbs turned a kind of brown color. Many places with unstable grids...

Hi CSA, strangely, on the last 2 jobs I worked on, the Ignition Transformer boxes are now inside the Turbine Compt on the side wall of the walkway (GE Pignone Frame 7 and GE Alstom Frame 9E). The Turbine Compts. on both these units are cool enough to walk inside and make a brief inspection...

Looks like you have a pretty serious leak into the turbine compartment guys. That's what you need to fix or you are going to damage a lot of other equipment.