Applied risk and consequence analysis for CO2 storage projects–the Captain X storage site, offshore UK (Acorn)

摘要: The Acorn project is a full-chain industrial CCS project, with collaboration between seven organizations across Europe. The aim of the project is to produce a technical development plan for a CCS hub that will capture CO2 emissions and store the CO2 at offshore subsurface storage sites under the North Sea. To assess the risk of leakage from the primary reservoir of the Captain X storage site, a risk assessment methodology based on expert elicitation was applied. Eleven leakage scenarios were designed which describe all possible leakage pathways, and a series of features, events and processes which will either enhance or reduce the likelihood and the severity of the leakage scenarios were discussed. The output of the assessment is a serious of risk matrices and spider diagrams combining the risk as well as the impact of consequences of potential leakage.