FIELD: machine building.
SUBSTANCE: test is carried out at increased pressure directly in protective jacket. Note here that test pressure should be 5% higher than that causing lengthwise stresses equal to those originating in operation and 5% lower than design pressure of destruction of faulty pipe with residual life making at least 15 years. Note that it should vary from 1.1…1.25 of operating pressure.
EFFECT: simplified method, reduced labor input in test.
1 dwg
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