Recent content by Hayoper

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    GE Mark VI, 7FA dual-fuel unit, Emergency Transfer function?

    Thanks for the info, CSA! Unfortunately the Control Specification didn't have the info I was looking for, so I'll see if I can get our techs to take a peek into the application code, us guys on the desk don't have access to that.
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    GE Mark VI, 7FA dual-fuel unit, Emergency Transfer function?

    What are the differences in the process of transferring from gas fuel to liquid fuel (and vice-versa, I suppose), when enabling "Emergency Transfer" on the Mark VI? I've gone through what manuals we have on-site, and cannot find anything specific. Any guidance would be greatly appreciated!
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    Mk VI "Excessive Speed Error" Preventing Turbine Roll

    Thanks again for your help with this, will definitely be interested to see what you find. We haven't had this issue happen again yet, as it occurred during a fairly rare set of circumstances (re-rolling the steam turbine following a trip).
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    Mk VI "Excessive Speed Error" Preventing Turbine Roll

    Thank you for your assistance with this! We've suspected for some time that our steam seals may be a bit worn, do you expect that might account for steam leaking through and causing the roll off turning gear? As far as the excessive speed error however, at the point where we lowered the RH...
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    Mk VI "Excessive Speed Error" Preventing Turbine Roll

    I currently work on a 2+1 combined cycle, with a GE D-11 steam turbine, and two 7FA CTs, utilizing a Mk VI control system. During a recent start-up of the steam turbine, we experienced an "excessive speed error" alarm when trying to roll the turbine. All permissives were met, the steam...
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