This recommended practice (RP) provides users with systematic procedures and performance requirements for assessing and verifying the suitability of storage sites and projects for environmentally safe, long-term geological storage of injected CO 2 streams. This includes assessment and verification of monitoring and risk management plans tailored to the characteristics of each storage site.
The RP applies the principles of technology qualification given in DNV-RP-A203 to managing the technical risks related to CO 2 geological storage. Technology qualification is a methodology developed by DNV for reducing the risk and uncertainty associated with implementation of new technology.
This RP defines performance requirements and procedures for the following:
- the selection and qualification of geological storage sites for long-term storage of CO 2
- the documentation of storage site characterization and storage site development plans as a basis for permit applications/reviews
- risk management throughout life cycle of CO 2 geological storage projects, from initial screening and storage site selection through to storage site closure and preparation for post-closure stewardship
- monitoring and storage performance verification
- well assessment and management planning
- storage site closure and preparation for post-closure stewardship.
Where the term CO 2 is used in the guideline, it assumes that carbon dioxide is pressurized; may or may not contain water; exists either as a liquid, super critical fluid or a gas; and also includes carbon dioxide dissolved in water contained in the injection zone.