The CSA Z741 Geological storage of carbon dioxide standard is
the first of its kind, and is intended to ensure a clear minimum
standard for geologic (longterm, underground) carbon storage. It is
a bi-national multi-stakeholder Canada-USA consensus standard,
developed with a technical committee of more than 30 professionals
representing industry, regulators, researchers and NGOs from both
sides of the border. The new standard will be used as a basis for
developing international carbon storage standards through the
International Organization for Standardization (ISO). CSA also
hopes that government will adopt the standard by reference through
regulations or permitting.
The standard is primarily applicable to saline aquifers and
depleted hydrocarbon reservoirs, but could also be used for storage
associated with hydrocarbon recovery. It includes recommendations
with respect to the safer design, construction, operation,
maintenance, and closure of storage sites. It also provides
recommendations for the development of management documents,
community engagement, risk assessment, and risk communication. The
project life cycle covers all aspects, periods, and stages of the
storage project, beginning with those necessary to initiate the
project (including site screening, selection, characterization,
assessment, engineering, permitting, and construction), that lead
to the start of injection and proceeding through subsequent
operations until cessation of injection; and culminating in the
post-injection period, which can include a closure period and a
post-closure period. The standard does not specify post-closure
The content of this article is intended to provide a general
guide to the subject matter. Specialist advice should be sought
about your specific circumstances.
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