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Recent content by vpg

  1. vpg

    Inconel 738C microetchant and technical data

    Does anyone have an idea what etachts to use for metallographic examination of cast Inconel 738C ? I find the data on Inconel 738C is very scarce. I tried a mixed solution of 10 ml nitric acid, 10 ml acetic acid, 15 ml hydrochloric acid and 2-5 drops glycerin, but was not able to get...
  2. vpg

    Estimate leak rate through pit hole in a pipeline

    Thanks RWF7437 and Hacksa for your suggestions. I still have a question regarding the effect of mostly clay soil surrounding the pipeline. Will the permeabiltiy or seepage through clay affect the leak rate? If yes, how do I account for the effect in the calculation? I know this question...
  3. vpg

    Estimate leak rate through pit hole in a pipeline

    Does anyone know how to estimate the Leak Rate through a pitted hole of a pipeline? The key point here is that the hole diameter is not a fixed value. It grew from 0 at the begging of the leak to a final size of 0.25". The leak rate varies with time. Given the following data, I would...

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