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Recent content by NorthernLight

  1. NorthernLight

    Ammonia Gas Detector Settings

    Does anyone have any reference (local/national law or engineering standard/regulation) that provides guidance (or requirement) for setting ammonia gas detectors at ppm levels for alarm and trip (plant shutdown). Current understanding is somewhere in range of 25-50 ppm for alarm (based on short...
  2. NorthernLight

    Relief Valve calculation verification

    Does anyone have an opinion or technical/legal reference (UK/EU preferred) on the requirement to perform independent and competent checks of relief valve calculations. My experience is that this is common/good practice but I am struggling to find a credible source. Many thanks
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