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  1. jm-darcy

    Would this Valve Move?

    I am sorry to have caused offense. This is certainly not homework. Instead it is an issue I have observed at work in an oil and gas application. I simplified the model in a hope to get responses that would help me (and hopefully others) to better understand the fundamental principles and...
  2. jm-darcy

    Would this Valve Move?

    Hi there, OP here. Thank you all for your input, it has been enlightening seeing the varied replies and debate going on. Just to clarify a few points: 1. It is hydraulic fluid and not air in the simplified ‘system’. 2. The hydraulic fluid is compressible but only slightly (density of ~1072...
  3. jm-darcy

    Would this Valve Move?

    Hi there, I was hoping someone may be able to help with a query that has been dividing opinions of the people I ask to comment on it. If I were to place a dual actuator valve filled with a compressible fluid into a compression chamber (or drop it to the bottom of the sea), with the open and...
  4. jm-darcy

    Ferous Contamination of Super Duplex and 6MO SS Tubing

    I am currently on assignment in a shipyard, commissioning an oil and gas platform. I am responsible for the topside equipment which will provide electrical and hydraulic power to equipment which will be installed subsea. I am concerned about SS 2507 and 6MO hydraulic tubing, rated at 15k psi...
  5. jm-darcy

    Metal Container in the Sun

    Thank you all for the considered replies. Also thank you bringing MIL-HDBK-310 to my attention. This is a great resource. By all accounts, it would seem to be safe to assume internal temperature to be 10C above the maximum wall temperature (55C determined from MIL-HDBK-310), resulting in some...
  6. jm-darcy

    Metal Container in the Sun

    I have recently found this remarkable forum, and hope to seek some advice on a query that has come up at work. I wish to deliver a metal container to a client, that will be sat out in the Australian sun. I have equipment inside the container (which we can assume generate little/no heat...

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