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  1. TurbMaintEng

    Control valve sticking GE G# STG

    Got one for you to ponder: We have an issue on U1. The MHC system/control valves are setup such that CV’s 1/2/4 have the same cam profile & timing and therefore all move together. CV3 has a different cam profile and is the last to open/first to close. The unit starts in full arc mode on the...
  2. TurbMaintEng

    GE Steam Turbine Control Valve Not opening

    Got one for you to ponder: We have an issue on U1. The MHC system/control valves are setup such that CV’s 1/2/4 have the same cam profile & timing and therefore all move together. CV3 has a different cam profile and is the last to open/first to close. The unit starts in full arc mode on the...
  3. TurbMaintEng

    GE Lube Oil Gear Pump

    I have a 7 mw GE double auto extraction steam turbine. The lube oil pump is located under the front standard. It is driven by a shaft running from the brass gear and worm/ quill shaft arrangement. The fly ball gov was removed years ago. I am looking for design clearances for the gear pump only...

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