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  • Users: MrMechanik
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  1. MrMechanik

    NFPA Code Covering Natural Gas Pressure Booster Stations

    Thank you for your reply. Is there any document from DOT related to this issue?
  2. MrMechanik

    NFPA Code Covering Natural Gas Pressure Booster Stations

    Hi everybody, I should be grateful if somebody guide me to FF of Natural Gas Pressure Booster Stations. Is there any NFPA code covering these stations?
  3. MrMechanik

    High Voltage Cabling Trench Over Buried Gas Pipeline

    I've found following link regarding induction of cabling on buried pipeline: http://www.matcor.com/images/graphics/PGTImprovingACmitigationMarch2009.pdf The guys in above article describe a method for mitigation of AC induced current on buried pipeline. In our case the buried gas pipeline...
  4. MrMechanik

    High Voltage Cabling Trench Over Buried Gas Pipeline

    Thanks David and BigInch, a lot for your responses. Actually duw to Client RECENT requirement, we are going to lay a 16" U/G natural gas who feeds from north to south a power plant and the power output should goes by a surface trench (230kV) from east to a western 400kV substation. So the...
  5. MrMechanik

    High Voltage Cabling Trench Over Buried Gas Pipeline

    Hi Everybody, Is there any limitation on cabling HV line (230kV) in a trench over a buried natural gas pipeline? Any reference to standard (or credible article) will be highly appreciated. Regards,
  6. MrMechanik

    COOLING WATER-SEA WATER (UNDERGROUND)

    To rconner: That's what i want to know, why designer is trusted to steel for larger sizes. To MJC: GRE stands fot Glass Reinforced Epoxy. The jump from 24" to 66" is from FEED P&ID, which doesn't include any size between. Does anybody out there have experience with U/G erection of GRE or GRP...
  7. MrMechanik

    Tie-List - Key Process Information

    pennpiper: Your list actually confused me. Would you please share a sample one (or reference to net link?) to BigInch: Aren't Max. and Min. flow, temp. and pressure related to "UTILITY SUMMARY" document?
  8. MrMechanik

    COOLING WATER-SEA WATER (UNDERGROUND)

    Isn't it related to erection problem of big GRE pipes, something like leakage?
  9. MrMechanik

    COOLING WATER-SEA WATER (UNDERGROUND)

    Thanks BigInch for your reply, Questions: "Either there were too many small lines and they forgot to change them..." What does that mean? the subject is larger size. Are you in favour of CS? "...or a higher yield strength is required for the same pressures when using those larger diameters." Why...
  10. MrMechanik

    COOLING WATER-SEA WATER (UNDERGROUND)

    Hi everyone, In one of our projects, the FEED documents contain PMS of entire plant, so we shall follow it. In definition of "COOLING WATER-SEA WATER (UNDERGROUND)" service, the pipe material is Copper-Nickel, for small sizes(say 3/4 to 4) , GRE for 6" to 24" and API5L-B (flake-lnd at field) for...

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