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  1. Designer80

    Low Pressure Steam Bellow Failure

    Thank you, Whats your opinion about the steam trap located just after the manual 24 inches Gate vale. Will it be sufficient to drain the condensate from the line or it will become non-functional if there is only condensate in the line and no steam (when manual Valve is isolated)?
  2. Designer80

    Low Pressure Steam Bellow Failure

    Thank you. Actually same practice we had been doing since atleast two decades and nothing happened (two years back during same activity, manual gate vapve was kept closed for 3 hours before it was craked open whereas this time it was mere 40 mins) thats the reason we are trying to find what has...
  3. Designer80

    Low Pressure Steam Bellow Failure

    Thanks. Indeed it will be useful reference resource book
  4. Designer80

    Low Pressure Steam Bellow Failure

    We have made some progress on the matter. Historically, this FCV had a minor steam passing (1-2 te/h ), normal steam flow through this FCV is 85-90 Tes/h.At the time of incident, team had isolated manual gate valve (24 inches ) to stop steam flow towards reboiler ( because distillation column...
  5. Designer80

    Low Pressure Steam Bellow Failure

    The field operator who was opening the manual Gate valve heard hammering and informed control room.he immediately closed back the valve.As soon as he heard hammer sound, leakage from bellow started and a lot of condensate started to splash from the damaged bellow. Line supports and guides are...
  6. Designer80

    Low Pressure Steam Bellow Failure

    we are trying to do dynamic stress analysis to install a solid pipe but so far model is failing
  7. Designer80

    Low Pressure Steam Bellow Failure

    FCV was closed but it has slight passing .Manual valve is "Gate" Type
  8. Designer80

    Low Pressure Steam Bellow Failure

    i think life cycles are already completed
  9. Designer80

    Low Pressure Steam Bellow Failure

    This is an old bellow and since you have pointed this out, i am not sure but i guess it must have completed its life as well.
  10. Designer80

    Low Pressure Steam Bellow Failure

    Thank you for your insightful reply. We dont have a drip drain and for slope , i am going to check
  11. Designer80

    Low Pressure Steam Bellow Failure

    I have a question. Recently one of our Low press Saturated steam ( 6.5 barg) mettalic expansion bellow got ruptured.when steam was isolated for few minutes (30 mins) and then again opened through crack opening the manual valve (shown in the sketch).A hammer sound appeared and bellow ( encircled...
  12. Designer80

    Alternate Alkali for Neutralization in Effluent Treatment System.

    Hi All We have been operating a chemical plant coupled with an effluent treatment plant to reduce effluent COD load within desired limits before discharge to Govt. drainage system.Our plant effluent is acidic in nature with a ph of 4-4.5 and we have to neutralize it before feeding to our...

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