Bridge Processes: A Solution for LCI Datasets Independent of Background Databases.

Bridge Processes: A Solution for LCI Datasets Independent of Background Databases.

Ingwersen, Wesley W;Kahn, Ezra;Cooper, Joyce;
the international journal of life cycle assessment 2018 Vol. 23 pp. 2266-2270
328
ingwersen2018bridge

Abstract

New platforms are emerging that enable more data providers to publish life cycle inventory data.Providing datasets that are not complete LCA models results in fragments that are difficult for practitioners to integrate and use for LCA modeling. Additionally, when proxies are used to provide a technosphere input to a process that was not originally intended by the process authors, in most LCA software this requires modifying the original process.The use of a bridge process, which is a process created to link two existing processes, is proposed as a solution.Benefits to bridge processes include increasing model transparency, facilitating dataset sharing and integration without compromising original dataset integrity and independence, providing a structure with which to make the data quality associated with process linkages explicit, and increasing model flexibility in the case that multiple bridges are provided. A drawback is that they add additional processes to existing LCA models which will increase their size.Bridge processes can be an enabler in allowing users to integrate new datasets without modifying them to link to background databases or other processes they have available. They may not be the ideal long-term solution, but provide a solution that works within the existing LCA data model.

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