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  • Users: nesamani05
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  1. nesamani05

    New phenomena of Pr.drop in fire water network

    We are in one LPG pumping station of cross country LPG pipeline system. We have fire water network ( length of the pipeline is < 2 km). Water is pressurised(8.5 Kg/cm2) by 2(1+1) Jockey pump(15 m3/hr, 88 m) & 2 DEG pumps(410 m3/hr & 88m). Set point for Jockey is, starts at 7.5 and stops at 8.5...
  2. nesamani05

    Speed fluctuation in VSD driven pump

    we have 3 LPG pumps(2+1) operated by separate VSD Motors(690 KW). Nowadays we have the below problem.For ex. Pump A & B runs at speed of 3000 rpm, then if small voltage dip occurs, then pump A speed goes to 100 rpm, then automatically comes to 3000 rpm. This cycle occurs within 50 secs. Pump B...
  3. nesamani05

    Do we need the min. flow re-circulation line..?

    Hi BigInch, No suction pr drwing much. This is the operation seq set already..But i dont know y so...? We just give the start command, after setting the speed. 1)Aux LOP start 2) after 30 secs pump speed start to increase & cooler fan starts. 3)after 20 secs MOV start opening. so total 50...
  4. nesamani05

    LPG pipeline is damaged

    Thank you all. My question is what is the best NDT method to find the thickness along the pipeline...? How to improve the thickness, wherever required...?
  5. nesamani05

    LPG pipeline is damaged

    We are operating a cross country LPG pipeline system. One above ground spurline of 8'' dia & 60 mtr lenght, is corroded at 72 points.Paint is in damaged condition, when we tried to remove paint, it started leaking.We tried in the blowdown line, so the line is isolated. Spurline is un-piggable...

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