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  1. qdzung

    Calibration requirement for Safety Relief valve, which is a part of Package

    Hello everyone, Thank you for your help. I just want to share an experience for SRV in our project in Vietnam. Actually, there is no Vietnamese code/standard request to calibrate SRV. However, the SRVs are installed on pressurized equipment, what is strictly supervise and test. During testing...
  2. qdzung

    Calibration requirement for Safety Relief valve, which is a part of Package

    Pennpiper, Thanks a lot. That is very good advice. What should I do if the vendor said they already tested and not further action is required, but the local norm requests to calibrate the SRV again? If the vendor set the SRV correctly, who will take response for the damage (e.g. somethings...
  3. qdzung

    Calibration requirement for Safety Relief valve, which is a part of Package

    I am now confusing about Calibration requirement for Safety relief valve (SRV), which is a part of pressurized Package. My opinion is the SRVs shall be calibrated at the construction site, so after that we are allowed to install SRVs on the vessel. Even SRVs have tested and certified at the...
  4. qdzung

    Operating Range of RTFE seats in a Butterfly valves

    How much oxygen content by volume in the fluid? Did you consider the oxygen service for this valve if the fluid contains more than ~20% oxygen by volume?
  5. qdzung

    Field Instruments books equivalent to "Control valve Primer- A User's Guide"

    Thank you very much, danw2. The Lessons in Industrial Instrumentation is very good book. It includes almost general things in instrumentation and control, and even some technical soft skills also. Tony wrote this book for his student, and luckily I have it since rev.1. It looks like a handbook...
  6. qdzung

    Field Instruments books equivalent to "Control valve Primer- A User's Guide"

    I am looking for field instrumentation (Flow, Level, Pressure, Temperature) books, which equivalent to "Control valve Primer- A User's Guide". It is very difficult to explain "equivalent". But I hope somebody has already read both, the "Control valve Primer- A User's Guide" and the book, which...
  7. qdzung

    correction factor

    Are you talking about P+T compensation for flow measurement? The selection of equation is depent on which Flow instrument type. If you are using dp flow, this link may help you: -> http://www.eng-tips.com/viewthread.cfm?qid=320614 For other flow intrument type, you should check the manual from...
  8. qdzung

    flushing ring gasket

    two sides of flush ring shall have the same rating and may be the gasket on instrument side has chosen with higher rating.In this case you should followed torque from the instrument manual(rosemount).
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