For each and every test location, a set of corrosion rate and retirement date calculations based upon the average of all 12 wall thickness values is provided. Under normal corrosion conditions having a low to moderate amount of pitting activity, such estimates provide a reliable indication of pipe condition.

     Calculations of wall loss and corrosion rate are based upon the assumption that all measured loss has taken place evenly over its time in service, and cannot be better defined for most investigations. Predictions of allowable loss, remaining pipe life and retirement date show an estimate of when the piping, from its current wall thickness, will reach minimum recommended wall thickness standards.

     In many past cases, such predictions have proven tremendously valuable - recommending replacement at near failure conditions, as well as saving the cost of unnecessary pipe replacement.

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