The Calculation of the Insulation Resistance of Forced Cathodic Protection Pipelines

The article presents the principle to bring about the formula for insulation resistance, and the programme and models for TI-59 calculator, which is able to work out the insulation resistance valuc of buried oil and gas pipelines and keep upto-date of the way in which it change, so as to provide the scientific ground for evaluating the duration and aging rate of a new corrosion protective material.