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  1. DBradley

    Pressure drop in compressible flow

    The Crane 410 book, buy used... and "the dynamics and thermodynamics of Compressible Fluid Flow, by: Ascher H. Shapiro. Also, the friction factor for liquids is fm and for gases it is ff. ff = 1/4 fm. It took me a while to find this out. The Crane book is a great start, but they drop you...
  2. DBradley

    underground natural gas pipeline installation

    ALL: What are the installation trench requirements for an underground / buried 4" gas pipeline (850psig); depth of trench, soil compaction requirements (ASCE #, section #), and thickness of sand around pipe = # ? Reference Spec / STD's listed...... DBradley
  3. DBradley

    RE: When are "Pigs Stations " required to be installed in short onsite pipelines

    I have to install a new 4" CNG return pipeline about 540' long on-site in TX and I have to inherit an about 540'4" & 6" supply and return. Do I need to design and install a PIG station so the onsite pipeline can be inspected and why or why not! David Bradley Mechanical Engineer
  4. DBradley

    Equipment design and manufacture standards

    Equipment in general. I keep on coming acrossed projects that have equipment manufacturers building "CRAP" that I have to fix and pay for, all to be resolved by the lawyers during or at the close of the books. My last project the equipment manufacturer cut the lifting lug off of the equipment...
  5. DBradley

    Equipment design and manufacture standards

    Does anyone know of a equipment design and manufacture standards to follow for clients to hold suppliers too during an EPC contract / project?
  6. DBradley

    ASME Pressure Vessel Design Flow Chart

    Does anyone have a Design Flow Chart for ASME Pressure Vessels? , more the detail the better.. DBradley

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