Recent content by Isulamu

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    SIL 2 and Redundancy

    First of all, SIL 2 certified equipment means that the probability of failure on low demand (In other words, the safety function fails to do its job when called upon) is ≥〖10〗^(-3)<〖10〗^(-2) according to IEC 61508. Based on that if you are having a Simplex FACP panel but certified with the...
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    Turbine application with YSIL Core safety protection module

    Dear All I am looking for a MARK VIeS turbine control application (Master file only) which includes in its hardware configuration the YSIL cores safety protection module IOPACK. Thanks in advance
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    Questions and Insights about Aeroderivative Gas Turbine

    >with which turbine are you working? I am working with solar >mars 100 it is Aeroderivative Gas Turbine with two shaft. GE PGT25 >Your gas turbine does not have post lube pump? It has no electrical lube oil pump for the GG shaft >when you talk about cooldown how much is the rpm value...
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    Questions and Insights about Aeroderivative Gas Turbine

    >EMRG_Shutdown..Non controlled shutdowns... YES
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    Questions and Insights about Aeroderivative Gas Turbine

    CSA I apologise for my delayed reply, and I thank you for your efforts. I will be trying to spend some time finding more details and will share anything i find in the thread. For my second question which has a somehow a connection with control is the cooldown of the machine and the...
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    Questions and Insights about Aeroderivative Gas Turbine

    Hi everyone, After working on both heavy duty and aeroderivative gas turbines and being aware of the major differences of the control theory of both, I have some questions about the mechanical side of the aeroderivative GT. I know that (correct me if i am wrong) the Aero GT shaft is much...
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    Gas valve (SRV/GCV) Actuator Plug Oil Leakage

    CSA <i>>It's tuning, not tunning.</i> Thank you for the correction and forgive my english. <i>> would have been nice to have in the original post.</i> Like i have mentionned before this problem was <b>long</b> ago and it is not the reason for this post, the reason was the main...
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    Gas valve (SRV/GCV) Actuator Plug Oil Leakage

    CSA, This check has been made because after start up of the unit we had a small instability in the gas valves. We were suspecting this leak, but after some tunning in the LP speed loop card (SSZB) (Mark II) the valves stabilized again. This was long ago, but after discussing this with two...
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    Gas valve (SRV/GCV) Actuator Plug Oil Leakage

    In our compression station we have frame 5 machines. After visual inspection of the gas valves actuator assembly (bolted to stationary base plate) of one machine, I noticed a SMALL oil leakage (see the picture in the link below) from the GCV actuator plug while the machine was running. (notice...
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    PM3 G3 + Purge Lockout DLN26+

    chemsouhd >Of course look at this share: >https://ibb.co/c4c4Ry > >What do you think? Thanks for the sharing and sorry for my delayed reply. FYI: The DLN 2.6+ gas fuel purge system provides delivery of positive purge air coming from the axial compressor discharge to the gas turbine...
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    PM3 G3 + Purge Lockout DLN26+

    Chemsouhd, Could you please share some screenshots of the part of logic you were talking about?
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    STANDARD DROOP/SPEED CONTROL compared to other LOAD/SPEED CONTROL

    CSA I can see that our discussion and your explanation has expanded to make everything clear to anyone who reads this thread. >Now, when P2 pressure is at rated, or even when it's near >rated (it's <b>NOT</b> an exact value, there's really a >range of P2 pressure the unit can operate...
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    STANDARD DROOP/SPEED CONTROL compared to other LOAD/SPEED CONTROL

    CSA Actually like i made the statement in a previous thread, i am working at compression station. recently i was noticing and making the comparison of two machines running at the same load reference (84% LP speed). however the GCVs were not at the same opening (can't remember the data...
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    STANDARD DROOP/SPEED CONTROL compared to other LOAD/SPEED CONTROL

    It is about the "standard droop speed control" and how it can be affected by the FPRG or a bad calibration of the gas valves...etc. Compared to the CONSTANT SETTABLE DROOP SPEED/LOAD CONTROL, The STANDARD DROOP/SPEED CONTROL has "no FSR value feedback" in its regulation loop. This mode of...
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    Gas Interstate Pressure Control by SRV

    niazbibiyana, In your initial post you said "During shutdown "FPRGCRIT" contributes to generate P2 reference (Derived from CPD)." would you please give us the reference of this statement? On the other hand, based on my knowledge FPRGCRIT stands for CRITICAL P2 required to maintain chocked...
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