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Recent content by amateurpipe

  1. amateurpipe

    Carbon steel pipes at low temperatures

    Kindly help in this matter.... I have tried to find a solution from many people, but could not arrive at an answer.
  2. amateurpipe

    Carbon steel pipes at low temperatures

    Hi, I have a situation where the plant construction has been completed and after that it is realized that certain carbon steel pipes will carry a fluid at - 57 °C temperature. So, I am trying to work a way out to justify the use of carbon steel pipes at these low temperatures without any...
  3. amateurpipe

    Suitability of carbon steel pipes at low temperatures

    Hi. I have some doubts regarding suitability of carbon steel pipes at low temperatures in reference with 323.2.2 of ASME B 31.3. Please bear with me as the list of questions is a bit long. First I am placing some data related to the subject from ASME B 31.3. (a) Para. 323.2.2(c) states that...
  4. amateurpipe

    Pipe natural frequency of 4 Hz.

    I have come across many projects where a piping system carrying two phase fluid is to be designed to have a natural frequency of 4 Hz or more. My question is from where do we arrive at the figure of 4 Hz ? How does a natural frequency of piping system more than this figure ensure that the pipe...
  5. amateurpipe

    Types of projects in petrochemical industry

    Sorry for posting a very basic question. I want to know different types of projects in petrochemical industry ( turnkey, epc, pmc etc and the differences in these types ). Is there any text material on this ? Thanks in advance.
  6. amateurpipe

    Load cases in caesar II for tank settlement.

    Could someone please tell me what should the load cases be for tank settlement check in caesar ? Kindly correct me if I am wrong : L1 = W+T1+P1+D1 ( Normal operating case ) L2 = W+T1+P1+D1-D2 ( Tank settlement case ) L3 = W+P1 ( Sustained case ) L4 = L1-L3 ( Expansion case for T1 ) L5 = L2-L3...

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