Naslov
Stray current detection on hazardous liquid buried pipelines as a part of pipeline integrity management

Autori
Kekez, Krešimir ; Martinez, Sanja ; Ivanković, Antonio

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
3rd International Symposium on Environmental Management, Book of Abstracts / Koprivanac, Natalija ; Kušić, Hrvoje ; Lončarić Božić, Ana - Zagreb : Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, 2011, 92-92

ISBN
978-953-6470-55-6

Skup
3rd International Symposium on Environmental Management, Toward Sustainable Technologies

Mjesto i datum
Zagreb, Hrvatska, 26.10.2011. - 28.10.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
korozija; lutajuće struje; menadžment integriteta cjevovoda
(corrosion; stray current; pipeline integrity management)

Sažetak
Stray current phenomenon that presents a serious threat to hazardous liquid pipeline integrity has been area of concern for pipeline operators since the beginning of the last century. In the intervening century it has only become a bigger problem due to the development of industrial facilities fully followed by growth of underground and aboveground electrical installations. Effects of stray current attack on pipeline may become very serious because current discharge causes enormously rapid and localized corrosion attack that leads to perforation and content leakage. Evaluation of stray current corrosion likelihood is particularly challenging in urban areas due to the multiplicity of possible stray current sources and the complexity of buried infrastructure. For the purpose of this paper a characteristic location in Zagreb municipal area was chosen, where buried high pressure gasline is followed by aboveground DC electric tram rail system. A sufficient number of data were collected by both, classic contact and advanced non-contact potential and current measurement methods. Synchronized simultaneous measurements of pipeline potentials, potential gradients, coupon currents and pipeline currents at multiple points along the pipeline route enable spatial and temporal resolution of stray current action. Evaluated stray current corrosion likelihood based on observed results is a valuable input for overall particular pipeline integrity management. This paper also explores possibilities lowering corrosion risk by applying various mitigation techniques.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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