Outline of this presentation

  • NBS/NIST 1910-1945 buried-pipe experiments.
  • What (little) we know about factors that influence the corrosion rate in the field.
  • Theory of diffusion-limited corrosion (we are talking about pitting)
  • Survival functions for buried steel pipe.
  • Survival functions for above-ground atmospheric storage tanks.
  • More and better data is needed.▫ A protocol for tank-bottom inspections and measurements
    ▫ Standardized definitions of corrosion measures (pit depth, remainingthickness, …)
    ▫ A standardized suite of soil measurements (resistivity, pH, … ) ▫ Cathodic protection record (percent time in operation, …)