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  1. Agnul93

    P&ID Header / Branch configuration Schematically represented vs actual in the field?

    Hi.I agree that P&ID shall be accurate. Of course the P&ID is done before the 3D model, hence some different configuration can occur. IMHO is good practice to align the P&IDs in accordance with 3D model (for some customer this is a mandatory step), in order to give to the erection company the...
  2. Agnul93

    HDPE Pipe Depth and Backfill Material

    Hi. As LittleInch already pointed out, PPI is very good reference. I found very useful also ASTM D2774 "Standard Practice for Underground Installation of Thermoplastic Pressure Piping": this standard defines in a detailed way how backfill should be done: other topics e.g. trench depth (min...
  3. Agnul93

    P&ID symbol identification

    I saw this symbols generally used as battery limit (in terms of engineering and/or supply) of packages, skid etc. Generally on the black side is indicated what included in the supply and on the white side what excluded.
  4. Agnul93

    Pipe pressure class

    Could be the indication of PN value, e.g. PN6, PN10?
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