FIELD: measurement technology.
SUBSTANCE: invention is intended for determining degree of risk of defects revealed during diagnostic examination, as well as for determining internal working pressure, at which linear part defective areas further operation is possible. Method of determining allowable internal pressure for main pipeline linear part section with stress-corrosion crack, which involves, comparison of current operating pressure in this main pipeline section with allowable internal pressure, which is calculated by mathematical relationship: 
EFFECT: higher accuracy of determining allowable internal pressure level for main pipeline linear part sections with stress-corrosion crack.
1 cl, 8 dwg, 2 tbl
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