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  1. oranjeep

    electrostatic precipitators

    Thanks for the reply.
  2. oranjeep

    electrostatic precipitators

    I have been tasked with developing a "process and equipment based report on (electrostatic) precipitator for metrics" Basically, I have to pick some key process parameters of fluidized catalytic cracking and relate thier effect on opacity. Any suggestions?
  3. oranjeep

    high resistance ground device installation

    Ground detection on ungrounded system. It is a critical process with no available equiped space on the main bus, which, I am told, is not really like a main bus-it is a "lattice" network. Either way, we can't take a shutdown, so I am going to have to put it on one of the branches until the next...
  4. oranjeep

    high resistance ground device installation

    I have a question about high resistance ground device installation. Does the device have to be connected to the main bus, or can it be connected to a branch circuit, which in turn, is connected to the main bus? The application is for a 3Ph., 1500KVA ungrounded delta-delta feeding a 600V bus...
  5. oranjeep

    Reliability of Mineral Insulated Heat Trace Splice

    I have a large (over 300ft) section of 16-30" process line with failed mineral insulated electrical heat trace which lasted 20 years before failing (shorting/openiong). To save money, we obvioulsy want to find out exactly where the shorts/opens are and replace just that section, instead of...
  6. oranjeep

    Reliability of Mineral Insulated Heat Trace Splice

    Does anyone have any experience with splicing mineral insulated electrical heat trace? How long does a splice last before it fails? Niall
  7. oranjeep

    Partial Discharge Analysis

    I was wondering if any of you have installed a partial discharge analysis device on any of your motors/generators or switchgear. How well has it worked?
  8. oranjeep

    What is "IRR"?

    Grat posts. Thanks
  9. oranjeep

    What is "IRR"?

    ...there is an IRR function in MS Excel, that explains in simple terms what it is used for. Thanks. They are tough with handing out the cash, aren't they?! I don't blame them.
  10. oranjeep

    What is "IRR"?

    Sorry...jst thought some fellow sparky's would be involved in getting projects aproved.
  11. oranjeep

    What is "IRR"?

    I have come across an email that talks about IRR for projects. I know it is an economic term-is it "internal rate of return"?
  12. oranjeep

    Mobile/Rentable UPS systems

    We have a UPS system, and the batteries failed and leaked. It is outside in a temperature controled shelter unit, protecting it from water and extreme cold. It has 14 batteries inseries, each about 11 volts. It has been extremely cold lately. They are old (over 10 years). Why-typically-do...
  13. oranjeep

    Unbranded vs. branded

    What are unbranded petroleum products and branded petroleum products? Please give examples.
  14. oranjeep

    Magnitization Current

    Thanks for the responses.
  15. oranjeep

    Magnitization Current

    How does magnitization current work? I have a motor that has a magnitization current of 2.9 Amps at 460Volts.
  16. oranjeep

    Excessisve arcing in a precipitator

    I work for a refinery, and we are experiencing arcing in our precipitator. Aside from shutting it down, how can we reduce it?
  17. oranjeep

    550KV transmission line causing static discharge

    Thanks.
  18. oranjeep

    550KV transmission line causing static discharge

    Workers near a 550KV trainsmission line (installing industrial lighting) are experienceing static electricity in the form of discharge. Has anyone seen this before? What is causing it? Can it be mittigaed?
  19. oranjeep

    The Physics of Elecrtrical Failure: Ungrounded Systems

    Heres what I know: 1. "Ground" is like a reference point. 2. Although I have read about it and heard about it, I still have no idea what "ungrounded" means.
  20. oranjeep

    Any Electrical MEP Consulting Engineers out there?

    What is an "MEP" firm?

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