Standards Development

Scope

This Standard will describe the measurement methodologies to quantify the mass of CO2 and CO2
stream (see ISO 27913 for definition of CO2 stream and ISO 27914 for quantification and verification
of CO2 related to geological storage) transferred across the CCS chain and to measure the level of
impurities in the CO2 stream.
This standard will encompass the entire Carbon Capture and Storage (CCS) chain, spanning from
the initial capture, transportation and subsequent injection into a geological reservoir. It will also
include measurement methods for batch transportation such as shipping, truck, and train
loading/unloading.
The standard will provide guidelines on available technologies for measuring the flow rate, mass of
CO2 or quantity of CO2 in mass flow rate, and composition of the CO2 stream. Moreover, will
establish the technical requirements for the instrumentation employed in the measurement process
and the allocation methods across the integrated value chain including metering and reconciliation.
The standard will also delineate the methodologies and requirements for quality assurance and
verification. This will ensure the establishment of measurement quality before installation and its
consistent maintenance throughout the operational phase in a standardised way.
The standard will provide standardised methodology for quantification and accounting of the carbon
dioxide transferred across the CCS chain.
It should be noted that the standard will not detail requirements for greenhouse gas emission
reporting, which are covered by existing standards and by national regulations.
It should be noted that this standard will cover the measurement of carbon dioxide streams at the
geological storage injection points, but will not cover the measurement, monitoring and verification
(“MMV”) for integrity of the storage complex which are covered in subsurface related standards and
therefore will be dealt with in the Working Group (WG) for Storage..
The primary objective of this report is to produce precise, standardized technical guidelines and
specifications that underpin the implementation of regulations, commercial contracts, and fiscal
transactions in the realm of CCS.

Purpose

Quantification and verification of the transported and stored CO2 stream mass quantity and composition (i.e. impurities levels) is required for several reasons including, but not limited to: -regulatory purposes (e.g. reporting of transferred and injected CO2, and storage capacity), -custody transfer (e.g. inventory change of ownership, mass balance in value chain), -contracts payment (e.g. transmission fee of a Transportation and Storage network, subsidies payment from government)

-tax relief

- health and safety (e.g. impurities level measurement required for safe operation , prevention of corrosion and management of the system)

- commercial management (e.g. compliance with Transportation and Storage network impurities level specifications)

The technical specifications and quality assurance requirements of the measurement devices used to quantify mass and composition have a direct impact on accurate payments and compliance with commercial agreements and regulatory requirements. Currently, there are no dedicated international standards covering the technical requirements for carbon dioxide measurement devices, including both flow and composition measurements. The industry lacks a common approach, and CCS specific standards are currently absent. There is an urgent need to establish a common measurement framework based on the industry's current best practices and the latest knowledge. Moreover, it is critical to establish a standardized accounting and verification methodology. The same custody transfer meter might be of interest to multiple stakeholders (e.g., the emitter, the transportation and storage network operator, the government, regulatory bodies). It should be avoided that the same equipment undergoes verification audits by each of these stakeholders separately. A single audit should be sufficient, and the results accepted as proof of verification by each of the stakeholders involved. To achieve this aim, it is of paramount importance that a standardized set of verification procedures is developed. A standardized methodology to account for the CO2 transferred across the CCS chain is required to ensure consistency of payment and inventory ownership and liability. Discrepancies in measurements and accounting methodologies should be avoided to minimize disputes between the involved parties. It is important that the accounting is approached from an entire value chain point of view (i.e., from capture to geological storage). In fact, each stage does not live on its own, but they are strictly linked. As such, the same accounting methodology should be shared across the chain to avoid quantification issues at the interfaces. Failure to produce this Standard could result in measurement inaccuracies, potentially leading to financial discrepancies, regulatory violations, and, ultimately, risks to the health and safety of people and the environment. Note: in case the WI is based on documents from other organizations than ISO/IEC, please specify it here