FIELD: power machine engineering, namely processing pipelines of nuclear power plants after welding them, other industry branches.
SUBSTANCE: method comprises steps of radially reducing pipelines in zone spaced from welded butt; performing pipeline reduction by winding onto pipeline preliminarily tensioned high strength filament. It allows to decrease residual stresses on inner surface of pipeline.
EFFECT: prevention of corrosion cracking of pipelines of nuclear power plants.
1 dwg, 1 ex
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