DNV DNV-RP-J202 PDF

General

Background

CO₂ Capture and Storage (CCS) has been identified as a key abatement technology for achieving a significant reduction in CO₂ emissions to the atmosphere. Pipelines are likely to be the primary means of transporting CO₂ from point-of-capture to sites (e.g. underground reservoirs) where it will be stored permanently to avoid its release to the atmosphere. While there is a current perception that transporting CO₂ via pipelines does not represent a significant barrier to implementing large-scale CCS, there is significantly less industry experience than for hydrocarbon (e.g. natural gas) service and there is a number of issues that needs to be adequately understood and the associated risks effectively managed. Today, CO₂ is mainly transported in pipelines for industrial purposes. The majority of CO₂ pipelines are found in North America, where there is over 30 years of experience in transporting CO₂, mainly from natural deposits and gas processing plants for enhanced oil recovery (EOR). The only existing offshore pipeline for transporting CO₂ is the Snøhvit pipeline, which has been transporting CO₂ (obtained from natural gas extraction) through a 153 km seabed pipeline from Hammerfest in north Norway back to the Snøhvit field under the Barents Sea, since May 2008. In a CCS context, there will be need for larger pipeline networks in more densely populated areas and with CO₂ coming from multiple anthropogenic sources. Also, offshore pipelines for transport of CO₂ to offshore reservoirs are likely to become common.

Objective

The objective of this Recommended Practise (RP) is to provide guidance on safe and reliable design, construction and operation of pipelines intended for large scale transportation of CO₂ to meet the requirements given in the referenced pipeline standards, ref. Sec.1.7.1.