Polyamide 11 (PA 11) has been used for more than four years in Alberta, Canada as a thermoplastic liner for rehabilitation of rigid carbon steel pipelines that carry corrosive raw sour gas and condensates.
Three installations of liners extruded from PA 11 have been completed since November of 1995. These liners were installed using an interference fit. In March of 1998 the first "loose fit '' liner made from PA 11 was installed in a carbon steel pipe. This paper examines the installation details and service conditions of that installation.
Keywords: thermoplastic liners, corrosive raw sour gas, interference fit, loose fit