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Recent content by dungprocess

  1. dungprocess

    PSV vs HIPPS on fuel gas supply line of Centrifugal Compressor

    Many thanks for the reminder, I just think this is just like the case of inadvertent closure of suction SDV where the only protection is ASV, additionally the speed reduction will bring the operating point out of surge limit but anyway dynamic simulation will tell many things.
  2. dungprocess

    PSV Repair

    Hi 1. When PSV is installed, it's considered as last protection system against overpressure. So whatever fluid you have in your process system, as long as the upstream system can cause overpressure, something which can make obstruction between PSV and system shall be avoided as much as...
  3. dungprocess

    PSV vs HIPPS on fuel gas supply line of Centrifugal Compressor

    Dear Sorry for late response, I am a bit busy last few days. georgeverghese: Sorry but I don; get your point, if HIPPS is installed on compressor discharge, it can operate independently to Compressor UCP, eg if blocked outlet says two PZHH on compressor discharge will demand HIPPS installed...
  4. dungprocess

    PSV vs HIPPS on fuel gas supply line of Centrifugal Compressor

    Dear all I have a centrifugal compressor driven by a Gas Turbine. Due to limited flare system capacity, we want to install a HIPPS on fuel gas supply line acrivated by PZHH (may be putting some voting mechanism) rather than a common PSV on the compressor discharge line. Please advise your...
  5. dungprocess

    Over sized relief valve with reduced discharge piping

    I guess from vendor data you can easily find the rated flow thru this PSV, did you check if this rated flow causes excessive back pressure on your psv?
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