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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Communications - Scientific Letters of the University of Zilina

ISSN

13354205

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

Volume 19

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

5

Strana od-do

10-14

Kód UT WoS článku

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EID výsledku v databázi Scopus

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