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  • Users: blackwed
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  1. blackwed

    Jet fuel compressibility

    Does anyone have access to Chapter 19.2.1 of the MPMS? I need the compressibility factor for products API 0-90, specifically, jet 5 and jet 8. DB deja moo: I've heard that BS before.
  2. blackwed

    Intrinsic Safety Grounding

    I am working on a control system at a 350 acre petroleum storage/distribution facility. ISA RP12.06, et al, seem to require that I run separate Intrinsic Safety ground conductors all the way back to the ground point for the facility’s main power service from each tank (literally miles of wire)...
  3. blackwed

    OTR Tanker Offload Rate?

    What does experience say is a good rate to expect to get when offloading jet fuel from a tank truck? Most everyone I've talked to agrees on about a 325+/- gpm max rate for a gravity drop. Can the rate be improved appreciably with a pump or will that just vaporize the product (RVP <0.1 psia)? DB
  4. blackwed

    Pump safeties

    What are some of the considerations that go into deciding what safety instrumentation might be a good idea to add to an existing pumping system. How do you decide if a pump warrants a vibration switch? How much or little should pump redundancy be a factor in deciding if a bearing temp alarm is...
  5. blackwed

    Mounting equipment overhead

    Take a 6’ piece of 1” sch 40 pipe. Drill a hole thru one wall about 1 or 2 inches from each end. Stick a piece of 3/8 all thread in each hole and put on a washer and nut (inside the pipe). Connect the other end of the all thread to some uni-strut clamped over two steel beams in the overhead...
  6. blackwed

    Connecting RS-485

    First off, comms is not my forte but in managing several industrial projects I have been exposed to a little. I once had an old hand tell me, &quot;If you want your RS-485 circuit to work reliably and consistently, don't let anybody s### you--NEVER connect it in any configuration other than a...
  7. blackwed

    Hole in a Solid

    How can I put a hole in a solid object, like a window in a wall? I'm working in 3-D with ACAD 2000. D Blackwell

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