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  1. shrestha1

    edge preparation

    Hello All, AWS D 1.1 states oxygen cutting of QT material is prohibited. The material under consideration is ASTM 517 Gr F. Is it still valid if i go with oxygen cutting or else shall i consider other option?the under consideration is fabricating steel liner for hydro power project on remote...
  2. shrestha1

    s 460 M

    Hello All, I am novice on working on the EN 10025-4 S 460 M thermomechanically rolled material used to make penstock pipe for hydro power. The material thickness ranges from 28 mm to highest 46 mm of 2.5 m length of one 1 pipe and 2.5 m diameter. As per their carbon percent is 0.074 with making...
  3. shrestha1

    water hammer

    Hello, How important it is to go for the transient study of rising pressure in penstock of high head power plants? The head is of 491 m with 20.42 m3/s discharge and with bifurcation in the end feeding equal capacity pelton turbine.Initial pressure rise is being calculated with Allievi chart...
  4. shrestha1

    hydro governor

    Hello, Is there anything behind using toothed wheel infront of magnetic pickups for measuring speed in hydro turbine shaft?

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