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  1. S

    Pressure and flow control at the same time

    In our plant we have this pressure/ flow control station to maintain feed gas pressure and flow at required optimum values. I have a difficult time understanding how both of these controllers work at the same time. For example, if it is desired to increase the flow then the flow controller opens...
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    Level Indicator Plugging Problem

    Thank you Retep for replying. The heat tracing level gauge option is not applicable to our case since the fouling of level gauge and associated piping is not a result of freezing. The second option of using purging water is difficult to implement since it requires water supply at high...
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    Level Indicator Plugging Problem

    Hello Gents, I need your advice about a problem we are encountering at our site. We have a high pressure (50 bar) gas/liquid separator drum and mounted on it there is a level indicator, level transmitter and bridle assembly which gets clogged/plugged so frequently due to presence of waxy...
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    I can not understand compressor stall phenomena

    CSA, In our site (LNG Plant), we have lots of GE frame 5D gas turbines that drive cenrtifugal gas compressors and I am working in operation of these machines so I need to know as much as possible about them. I was learning about the CCC controller that controls centrifugal compressor recycle...
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    I can not understand compressor stall phenomena

    Than you so much CSA for your help, as always. Your explanation of "Stall" is easy to understand and convincing and until I find a better explanation I will stick to it.
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    I can not understand compressor stall phenomena

    I understand that during a compressor surge air will flow in reverse direction out of the compressor …the engine power generation cycle is basically interrupted and the engine is no longer producing power besides the very detrimental /damaging effects of the reverse flow on compressor...
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    A question about IGV and 2nd stage nozzles fail position and opening angle?

    Thank you all for your valuable input and help ! Today, I asked one of the experienced instrument engineers who work on GE turbine maintenance at my company. He told me that P&ID is not correct. The fail safe position of IGV is fail closed and not open as P&ID shows, that is for sure! The fail...
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    A question about IGV and 2nd stage nozzles fail position and opening angle?

    Yes I was confused about this phargaph. It states that the 2nd stage nozzles opening should increase more as HP turbine speed increase ..but in actual operation it decreases!
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    A question about IGV and 2nd stage nozzles fail position and opening angle?

    So 2nd stage nozzles should close or open more as HP turbine shaft increases? I understand your explanation for IGV. Thank you. But then shouldn't IGV fail safe position be fail close not fail open ?!
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    A question about IGV and 2nd stage nozzles fail position and opening angle?

    Sorry. The manual can be readily found on the internet. https://kupdf.net/download/vol-01_5afb8830e2b6f58b0e7aef6d_pdf As wrote in the first post, I have already searched for an answer in the manual with no success so the question remain un-answered " Does the 2nd stage nozzle initial position...
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    A question about IGV and 2nd stage nozzles fail position and opening angle?

    I have the manuals and I could not find any information about the fail-safe position of IGV or 2nd stage nozzles or how they act during startup
  12. S

    A question about IGV and 2nd stage nozzles fail position and opening angle?

    Hello, in our site we we have several GE MS5002D gas turbines running. I have a problem in understating the working principle of some components in the turbine. MS5002D is a two shaft turbine that utilizes Inlet guide vanes (IGV) mounted to the front of the axial air compressor and also a...
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    Documents required for GE MS-5002D turbine

    Wow, that was so much information about alarms. Thank you very much CSA! Really appreciate it.
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    Documents required for GE MS-5002D turbine

    For turbines, Speedtronic Mark VI is the control system and the drive compressors are controlled by CCC system. Not sure about the exact version of CCC , I will ask about it or search in manuals
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    Documents required for GE MS-5002D turbine

    Hello gents, I am working with GE heavy duty frame 5D (MS-5002D) turbines at our plant. I have the manuals for operating the turbine but I can't find any documents that summarize and include all turbine alarms and trips. Can anyone please help and send me such documents for this model or similar...
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