Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. BPW363

    Communications protocol error codes (Modbus TCP, Modbus RTU, Fiber Optic TCP etc.)

    Hi Safety engineer here with a mechanical background. I've been looking at error codes for Ethernet TCP and Modbus TCP communications and have been wondering whether they can be used to indicate more than just the health of the communications cable, networking, etc. For example, is it possible...
  2. BPW363

    Engineering salary data for the UK and the USA

    geotechguy1, If a significant part of your thinking is being close to Europe then forget the UK. We vacation in Italy or Greece most years and the jet lag is a small price to pay for higher wages here. That said, I think you should apply for positions in both the UK, EU and USA. You'll quickly...
  3. BPW363

    Engineering salary data for the UK and the USA

    I presume you're in the UK and thinking about moving to the US? I'm a Brit working in the USA. For what it's worth I am paid around 2.5 times (gross) what I would earn in the Britain. A few years ago I thought about returning, but as soon as I realized how low salaries were (circa 60-90K) I...
  4. BPW363

    Hydraulic simulation of a system with fluid pills and spacers

    1503-44 For me it makes sense to refer to batching and trains. While it makes sense to talk of slugs of fluid it will confuse some audiences. I am looking at the case of transient flow in its most general sense including 'batched' compressible flow. One missing piece of the puzzle is fluid...
  5. BPW363

    Hydraulic simulation of a system with fluid pills and spacers

    1503-44: thanks for the PipeLine Studio reference, I'll take a look. I note both are pipeline software packages and wonder to what degree that would limit its use in piping system? Any thoughts are welcome. As regards pills vs. batching, I started out using 'pills' but couldn't find significant...
  6. BPW363

    Hydraulic simulation of a system with fluid pills and spacers

    Hi LittleInch, thanks for the comments. I appreciate what you say about simulation, as George Box once said 'all models are wrong, but some are useful'. I think you would be surprised at how the world of engineering is being forced to change by advances in computer science. Slide-rule, followed...
  7. BPW363

    Hydraulic simulation of a system with fluid pills and spacers

    Thanks @1503-44, Did you check out the alternatives, and can you share what they were? And what is the annual license fee? Given its application to pipelines I am wondering if it will deal with vertical runs of pipe, and annular flow.
  8. BPW363

    Hydraulic simulation of a system with fluid pills and spacers

    I need to simulate the time-varying pressure and flowrate in a complex piping system. The pipes connect storage tanks holding fluids that have very different density and viscosity. The overall system has manifolds, valves, pumps etc. The nature of the problem also means we must simulate the...
  9. BPW363

    Is NI LabView suitable for use as control system

    I am considering using NI Cards and LabView as the platform for a manufacturing control system and wonder what experienced Controls & Instrumentation engineers think about this option. Its clearly cheaper than using industrial PLCs and smooths the transition from prototype to production.
  10. BPW363

    Fire and Explosion Frequencies for transformers

    Thanks I have a package of information from Transproco, some of which is interesting and useful. Much of it is theoretical so I would be interested to hear from others if they have actually used this type of system for explosion mitigation. Does anyone know if one of the professional bodies...
  11. BPW363

    Fire and Explosion Frequencies for transformers

    Can someone point me to statistics for oil filled transformer fires and explosion (frequencies, damage, loss of life, clean-up, etc). We have a range of voltages including 240->35kV and 35->4kV. Thanks
  12. BPW363

    EHV power lines underground - Costs vs Surface

    Slavag there are now 500KV - 1000MVA cables to IEC 62067. They have a 2500mm2 copper core, and weight 40kg/m.
  13. BPW363

    EHV power lines underground - Costs vs Surface

    Thanks keep the info coming. We would of course not progress any project without a detailed engineering assessment! This thread is more for my benefit than the teams, that said there has been some useful input -especially the eureletric report.
  14. BPW363

    EHV power lines underground - Costs vs Surface

    Thanks guys, this helps somewhat. Our case is somewhat unusual though. The lines must be run through a forest with marsh-like ground surface. To complicate matters the region is classified as a 'riparian widerness'. We have an idea of how much it will cost to clear a right-of-way and of how...
  15. BPW363

    EHV power lines underground - Costs vs Surface

    The 10 to 12 is very different to data provided by Brugg - of course they are a vendor. The fact is, some 4% of the transmission lines in the UK are underground - most for good reasons like being near airports or being new lines run in cities or urban areas. I've read a few articles suggesting...
  16. BPW363

    EHV power lines underground - Costs vs Surface

    Does anyone have a comparison of costs and challenges for EHV distribution underground. I am interested in whether or not the lifecycle cost of a burried system is really much worse than for overhead lines. The base case system would consist of 500kV lines delivering 1000MVA. The length...
  17. BPW363

    Ignition risk from MV, HV and EHV lines

    Thanks Cranky - You mention right of way - the question is whether the right of way width is suitable for our case. Do you know the basis on which the ROW was calculated and would it be appropriate to have a producing gas or oil well at 1000psi at the boundary of the ROW?
  18. BPW363

    Ignition risk from MV, HV and EHV lines

    I realise this was somewhat an open question - but hope to get a few leads in the right direction. I am not an electrical engineer but do understand flammability relatively well. The fluids are highly variable and start as bitumen and water with some CO2 and then end up as a variable mix of...
  19. BPW363

    Ignition risk from MV, HV and EHV lines

    I should point out that the scenario here is: 1. a well blowout 2. migration of a large, hot and flammable vapor cloud near the electrical equipment 3. potential liquid rainout
  20. BPW363

    Ignition risk from MV, HV and EHV lines

    I need to assess the ignition risk from MV, HV, and EHV lines and transformers in the vicinity of wells producing hot oil and gas. Can you all comment on whether you think bare overhead lines, sub-stations, and transformers are a potential source of ignition and, if so, then direct me to any...

Part and Inventory Search

Back
Top