ENI initiated in the mid 90'ies a huge research effort on high pressure gas pipelines and is currently performing a 3 years project, called TAP (Trasporto gas Alta Pressione), with the aim to study constructability and field performance of modern high grade line pipe in operation, as well as to define and specify new technologies for near-to-come long distance natural gas pipeline projects. Despite the significant effort spent in recent years on the X100 issue, a series of open questions, mainly regarding integrity of high grade line pipe in operation over the envisaged life span in real environment, is still under discussion. The TAP project is aiming to fill this gap, by integrating laboratory and full scale experimental program, including the realization and simulated operation of a X100 pilot section in the CSM full scale test station, Pedasdefogu, in Sardinia island, Italy. Operation includes typical fluctuation in pressure over a period of time, 18 months, sufficient to detect line pipe susceptibility to EAC (Environmental Assisted Cracking), accounting for different wall thicknesses/usage factors (0.72 and 0.80) as well as presence of typical defects from third party interference. The paper introduces the TAP project, and particularly describes main aspects of the laboratory and full scale experimental campaign addressed to EAC.
The TAP project
Das TAP-Projekt
2005
16 Seiten, 13 Bilder, 3 Tabellen, 32 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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