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- Title
ПІДСИЛЕННЯ ДІЛЯНКИ ТРУБОПРОВОДУ АЕС З ДЕФЕКТОМ СТОНШЕННЯ СТІНКИ ПРИ ВСТАНОВЛЕННІ ЗВАРНОЇ ЛАТКИ.
- Authors
Ворона, Г. В.; Костеневич, О. С.; Міленін, О. С.; Махненко, О. В.
- Abstract
Repair of NPP pipelines with erosive and corrosive wear defects is an urgent problem of the nuclear power industry of Ukraine. When repairing the pipeline, the defective section is cut out and a new pipe coil is installed by welding. But for a large number of technological pipelines with identified isolated defects, inadmissible wall thinning, replacement of a pipe section is associated with a large volume of repair work. To extend the service life, the defective section of the pipeline can be reinforced, for example, by welding an external overlay, building-up, installing a bandage or a welded sleeve. In order to justify the expediency of using reinforcing structures of welded external overlay type at pipeline repair, a finite-element analysis of the stress-strain state of a straight section of the pipeline with an erosion-corrosion wear defect under the action of internal pressure before and after repair was carried out. The results of the analysis showed a high efficiency of reinforcing the defective section of the pipeline in the case of using a welded external overlay at repair. The obtained results can be used at justifying the introduction of alternative pipeline repair technologies at NPPs of Ukraine.
- Publication
Technical Diagnostics & Nondestructive Testing / Tekhnicheskaya Diagnostika I Nerazrushayushchiy Kontrol, 2024, Issue 2, p11
- ISSN
0235-3474
- Publication type
Article
- DOI
10.37434/tdnk2024.02.02