Process Engineering Discussion Community

Expand all | Collapse all

Dealing with Pressure Relief Valve

  • 1.  Dealing with Pressure Relief Valve

    Posted 08-22-2019 16:46
    .How to deal with pressure relief valve? I was given to "evaluate the safety and mechanical of a high pressure relief valve in low pressure steam header that the pressure relief valve is rated at 190 C and it's currently operating at 225 C. Is doing any changes important? Re run the PRV calculations." To do this, what do I need? It's an industry issue.

    ------------------------------
    Abdulla Alishaq
    Doha
    ------------------------------


  • 2.  RE: Dealing with Pressure Relief Valve

    Posted 25 days ago
    Pressure relief valve sizing is a critical part of ensuring a safe process.  The process engineer must understand both the normal and emergency operating scenarios (upstream conditions) as well as the down stream scenarios (flare header shared by other processes, shared flare stack, neutralizer solution scrubber, etc).   This can be a terribly complex combination of scenarios that would challenge the most experienced process engineer.  It is not an assignment to be given lightly nor its assessment to be taken without intense scrutiny.  Calculating an orifice size for set of given upstream and downstream pressures for a single PRV is the most trivial part of this calculation.

    ------------------------------
    Scott Love PE
    Fellow
    Bartlesville OK
    [ConocoPhillips (retired)]
    ------------------------------