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Recent content by mghawar

  1. mghawar

    DIN Standard Scope

    Hi, I have a client requiring a small unit (consists of lab size exchangers and membrane modules) to meet DIN standards. The system design pressure is 50 psig and max temperature 100ºC. As in North America we deal with ASME only, what is required to meet the DIN standards? Any help or...
  2. mghawar

    Category H Fitting

    Thank you all for your replies and help. I am reviewing the Codes and Regulations, however there seem to be grey areas and some confusion. Hence, seeking your help to uncloud my thoughts. Due to the size of the vessel, it falls outside TSSA regulations. However, the system will be used for...
  3. mghawar

    Category H Fitting

    Hi, I have a small lab unit that consists of a small vessel (ASME UM stamped), tubing and some other fittings. The total volume of the unit is less than 1.5 cu ft, and none of the components have diameter larger than 6". The unit could operate upto 50 PSIG. Does this need to be a registered...
  4. mghawar

    Exchanger Exemption

    Hi, Can a shell and tube heat exchanger below duty of 200,000 BTU/hr used to heat water to 75ºC with high temperature steam be exempted from ASME code requirements? Thanks, Mehak
  5. mghawar

    how to sizing psv when there are chemical reactions in the protected equipment? Any software?

    If the Site is equipped with a lab (research facility) you can have an arc test done on the potential reactions. I am sure you can also get these done from out side resources. Based on the results you will be able to predict if the reactions are run away reactions or not and you can scale up...
  6. mghawar

    CPVC Pipe for ASME SS Exchanger

    Thanks a lot moltenmetal, this information helps. I have gone through the code and other regional requirements. This is a mechanical recompression system, the evaporated steam from the process is re-compressed through a blower. Steam is superheated due to recompression and is used to recycle...
  7. mghawar

    CPVC Pipe for ASME SS Exchanger

    Mike, Thanks for the heads up :s Let's just excuse it once for first time user :) Steam on the shell side is at 176C with all SS piping and sugar solution on tube side with maximum 80C temperature with CPVC piping. Thanks, mg
  8. mghawar

    CPVC Pipe for ASME SS Exchanger

    Thanks Mike. This helps. Use of CPVC (which is plastic) would be on the low temperature side maximum 80ºC. The question is that can we have a spec break from exchanger that is 304SS to CPVC pipe. Are there any code regulations that do not allow this (if the exchanger was ASME vessel)...
  9. mghawar

    "Coded" PSVs

    Hi, If the system you are protecting is a pressure vessel and ASME codes are applicable, than your PSV needs to be design in accordance with ASME code and needs to be "coded". UV stamp means that the valve or pressure vessel is build according to ASME Standards. These code excerpts may help...
  10. mghawar

    CPVC Pipe for ASME SS Exchanger

    Hi, I am working on a low pressure sugar solution system. A shell&tube exchanger is used to maintain temperature in the system. The sugar solution flows through the tube side (process side, 25psi and 80ºC max)and superheated steam under vacuum is used on the shell side (100 torr and 176ºC...
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