DNV has published new procedures designed to provide the safety needed to transport CO2 by pipelines and strengthen the development of carbon capture and storage (CCS) projects. Publication follows the CO2SafeArrest joint industry project (JIP) between Energy Pipelines CRC (Australia) and DNV, work supported by the Norwegian funding body CLIMIT and the Australian Commonwealth Government under the Carbon Capture & Storage Research Development and Demonstration Fund.
The JIP involved two large-scale CO2 crack arrest tests being carried out on 24-in. OD pipelines to better understand the safety implications of CO2 releases. The testing was performed at DNV’s UK research and development center.
The need to transport CO2 is expected to increase significantly, according to DNV, as part of the widespread view that CCS is a viable means to reduce CO2 emissions. An updated recommended practice (RP), “DNVGL-RP-F104 Design and Operation of Carbon Dioxide Pipelines,” has been published based on the results from the CO2SafeArrest JIP, resulting in a new empirical model for the assessment of running ductile fractures in CO2 pipelines. The RP can also be used alongside DNVGL-ST-F101 Submarine Pipeline Systems.
Transport of CO2 can use either existing pipelines or newbuild pipeline systems. DNVGL-RP-F104 supports both the design of new pipelines and the reuse of existing infrastructure by describing a process to requalify pipelines for CO2 transport through various steps.