Pipe internally clad or lined with corrosion resistant alloy (CRA) is used offshore when production fluid contains H2S and/or CO2 to protect the carbon-steel pipe from corrosion. Girth weld classification in standards such as BS7608 and DNVGL-RP-C203 do not specifically include clad and lined pipes but their fatigue performance is relevant to designers of these pipelines. This paper first reviews available literature on the in-air fatigue performance of clad and lined girth welds. Data from the literature as well as full scale resonance fatigue results from tests carried out at TWI are then analysed so that recommendations can be made on a suitable fatigue classification. Finally, areas are highlighted where more research into clad and lined pipe is needed.

This content is only available via PDF.
You do not currently have access to this content.