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  • Users: jpuy
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  1. jpuy

    Sprinkler & Standpipe Hydraulic Calculation

    Hi, Hope you can help me on this. As per NFPA 13, the most distant is not necessarily the HYDRAULICALLY most remote. How do we identify the most hydraulically remote if not the most distant? Appreciate any feedbacks. Regards, Jeff
  2. jpuy

    Rusted Ductile Iron Pipes

    Sir, hope you can help me. What's the best approach to treat rusted ductile iron pipe? I have attached a photo showing pipe current condition. Many thanks.
  3. jpuy

    High Chloride in Stormwater

    Hi,thought you might be of help. Picture a 5km man-made island with extensive stormwater network. At the moment, it is already operational. Open for public use. Currently, we are facing High Chloride (40,000-70,000 ppm) in stormwater that is showing potential major corrosion problem on our...
  4. jpuy

    Acid Resistance of Cast Iron

    Hi, i'm new to this forum. need help... We are unable to run our Sewage Treatment Plan Lifting Station at the moment due to high salinity/acidity content of water. (ie. Water TDS (total dissolved solids) = 5000ppm due to groundwater seepage). We are afraid that pump impeller (cast iron) will...

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