Assessing the impacts of scale residues from offshore oil and gas decommissioning on marine organisms

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dc.contributor.authorCresswell, Ten_AU
dc.contributor.authorBrown, Sen_AU
dc.contributor.authorWong, HKYen_AU
dc.contributor.authorApte, Sen_AU
dc.date.accessioned2021-10-08T03:57:09Zen_AU
dc.date.available2021-10-08T03:57:09Zen_AU
dc.date.issued2021-07-02en_AU
dc.date.statistics2021-10-05en_AU
dc.description.abstractSuccessful decommissioning of offshore oil and gas infrastructure requires an effective and safe approach to assessing and managing chemical and radiological residues. Scale frequently accumulates on the interior surfaces of pipes and other structures and may persist long after extraction operations have ceased. Scale materials can contain a range of metal contaminants (including mercury), as well as naturally occurring radioactive materials. In newer or more accessible infrastructure, the scale is routinely removed, and becomes a waste product. The persistent nature of scale contaminants can result in a radiological dose to the organisms living on, or near an intact pipeline. Eventually, infrastructure corrosion following in situ decommissioning (abandonment) could lead to metal and radionuclide contaminants being accessible to the surrounding seafloor environment, where bioaccumulation and subsequent ecotoxicological effects from the chemical and radiological properties of the scale could occur. The paper describes a tiered approach to assess the ecological impacts of pipeline scale in order to assist operators with their plans for decommissioning offshore infrastructure, especially when considering ‘leave in place’ options. © CSIRO 2021en_AU
dc.identifier.citationCresswell, T., Brown, S., Wong, H., & Apte, S. (2021). Assessing the impacts of scale residues from offshore oil and gas decommissioning on marine organisms. The APPEA Journal, 61(2), 379-383. doi:10.1071/AJ20024en_AU
dc.identifier.issn2206-8996en_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitleThe APPEA Journalen_AU
dc.identifier.pagination379-383en_AU
dc.identifier.urihttps://doi.org/10.1071/AJ20024en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11897en_AU
dc.identifier.volume61en_AU
dc.language.isoenen_AU
dc.publisherCSIRO Publishingen_AU
dc.subjectDecommissioningen_AU
dc.subjectOffshore platformsen_AU
dc.subjectPipelinesen_AU
dc.subjectOilsen_AU
dc.subjectGasesen_AU
dc.subjectPetroleumen_AU
dc.subjectMetalsen_AU
dc.subjectMercuryen_AU
dc.subjectNaturally occurring radioactive materialsen_AU
dc.subjectRisk assessmenten_AU
dc.subjectEcologyen_AU
dc.subjectAquatic ecosystemsen_AU
dc.titleAssessing the impacts of scale residues from offshore oil and gas decommissioning on marine organismsen_AU
dc.typeJournal Articleen_AU
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