Influence of repairing using welded steel patches on structural integrity of a high pressure gas pipeline

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25797000%3A_____%2F17%3AN0000035" target="_blank" >RIV/25797000:_____/17:N0000035 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Influence of repairing using welded steel patches on structural integrity of a high pressure gas pipeline
Original language description
The present paper deals with complex material properties of DN 300 pipeline from the section Olesna - Barchov. The work was aimed at experimental verifcation of the efect of welded-on cover patches on the pipeline integrity. Two types of welded-on cover patches were evaluated. In the frst case, just a single patch - steel plate was welded into the pipeline wall, replacing the damaged area. A lack of root fusion was found by means of the NDT. In the second case, the primary patch welded into the wall was covered by an auxiliary patch welded over the frst one. No imperfection of the weld integrity was shown in the second case. The experimental programme contained an evaluation of the resistance of the repaired section to 10 000 pressure cycles induced by the inner water pressure at R = 0 cycle load asymmetry and maximum pressure of 6.3 MPa. The efect of these repairs on the limit state of the pipeline was verifed by means of hydrostatic burst test. The tests comprised the evaluation of fracture surface morphology.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical
Communications - Scientific Letters of the University of Zilina
ISSN
13354205
e-ISSN
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Volume of the periodical
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Issue of the periodical within the volume
Volume 19
Country of publishing house
SK - SLOVAKIA
Number of pages
5
Pages from-to
10-14
UT code for WoS article
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EID of the result in the Scopus database
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