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  • Users: dtreacy
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  1. dtreacy

    Passivation

    I am extending the purified water loop on a site. My plan is to fabricate up the various spools in-situ and tie them into the loop at a later date. My question is this. Is it acceptable to fabricate these spools now and leave them sit for a couple of months without passivation. What are the...
  2. dtreacy

    UV Intensity Meter Calibration

    We operate a 4 lamp UV disinfection unit on our purified water distribution loop. During a 3rd party audit we were requested to calibrate the UV intensity meter and duty hour totaliser on the unit. I have a number of questions regarding this: 1) Does anybody currently calibrate their duty hour...
  3. dtreacy

    ZDT, ZDL Valve P&ID Symbols

    Hello All, Quick question. Does anyone know if there are specific P&ID symbols for Zero Dead Leg valves or does the normal diaphragm valve symbol suffice? Regards Daragh
  4. dtreacy

    Feed to 2 purified water storage tanks.

    I have an interesting problem with regards feeding 2 purified water storage tanks with one generation system. I'm trying to design a method of delivering purified water from the product line of an EDI to 2 separate storage tanks and back to an RO Break tank. Each storage tank will have its own...
  5. dtreacy

    Plate and Frame Heat Exchanger for Purified Water

    I am hoping to install an Alfa Laval double walled plate heat exchanger onto our site purified water distribution loop. The heat exchanger will function as a trim cooler maintaining the loop and tank temperature at 15 degC, it will also be used as a batch heater for thermal sanitisation at 85...

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