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A New Method for As-built Burial Risk Assessment for Subsea Cables
Blekinge Institute of Technology, Faculty of Engineering, Department of Mathematics and Natural Sciences.
Blekinge Institute of Technology, Faculty of Engineering, Department of Mathematics and Natural Sciences.ORCID iD: 0000-0001-7051-3256
Blekinge Institute of Technology, Faculty of Engineering, Department of Mathematics and Natural Sciences.
2022 (English)In: SyNERGY MED 2022 - 2nd International Conference on Energy Transition in the Mediterranean Area, Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2022Conference paper, Published paper (Refereed)
Abstract [en]

A new method using burial measurements for risk assessment of subsea cable installations is proposed. Only methods comparing the design boundaries have previously been used to verify subsea cable installments. The disadvantage of utilizing design boundaries is the possibility of not fulfilling the risk requirements since the assumed burial depth of the cable and its measurement data can differ, leading to the challenge of assessing how the difference and its uncertainty affect burial risk. We proposed and tested the method for a scenario using seagoing vessel traffic data and sensor characteristics. The analysis is limited to white measurement noise but shows a deviation in risk estimation between the design-and measurement-based assessments. The presented result enables the approximation of the risk assessment for projects of varying specifications. The proposed statistical method is a less conservative way to assess the correct installment of a cable and possibly to evaluate verification specifications. © 2022 IEEE.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2022.
Keywords [en]
AIS, Cable Burial, CBRA, Depth of Burial, Risk Assessment, Subsea Anchor Protection Assessment, Subsea cable measurement data analysis, Subsea High Voltage Cables, Risk perception, Specifications, Uncertainty analysis, High voltage cable, Measurement data analysis, Risks assessments, Subsea cables, Subseum anchor protection assessment, Subseum cable measurement data analyse, Subseum high voltage cable
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:bth-24050DOI: 10.1109/SyNERGYMED55767.2022.9941457Scopus ID: 2-s2.0-85142885332ISBN: 9781665461078 (print)OAI: oai:DiVA.org:bth-24050DiVA, id: diva2:1718131
Conference
2nd International Conference on Energy Transition in the Mediterranean Area, SyNERGY MED 2022, Thessaloniki, 17 October 2021 through 19 October 2021
Available from: 2022-12-12 Created: 2022-12-12 Last updated: 2023-03-03Bibliographically approved
In thesis
1. Analysis and improvement of risk assessment methodology for offshore energy installations: Aspects of environmental impact assessment and as-built subsea cable verification
Open this publication in new window or tab >>Analysis and improvement of risk assessment methodology for offshore energy installations: Aspects of environmental impact assessment and as-built subsea cable verification
2023 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

In the expansion of offshore sustainable energy systems, there is growing pressure on the environment and permit processes and the accumulation results in much higher total risk for accidents of future assets. Anticipating the problems at the design stage and improving verification is likely to increase energy development and reduce costs. This thesis explores offshore DST (Decision Support Tools) and risk verification of subsea cable assets.For subsea cables, a statistical method is proposed utilizing measurement data together with shipping traffic data (AIS) to estimate the environmental risk and risk of accidents of installed cable assets. This should partially solve issues of improving design using more data and surveys and utilizing mechanical and sensor-specific characteristics to improve the confidence and burial estimation, contrary to today’s methodology. The implication of the two studies of cable burial risk assessment techniques and verification shows how a developed methodology can solve issues for verifying the integrity of an installed asset. Putting our methodology into practice involves many challenges. 

For the marine Decision Support Tool (DST) and sustainable energy development, to estimate potential savings if permit processes would be shorter and less burdensome without degrading the quality of the EIA (Environmental Impact Assessment). A method is proposed to model various scenarios of effective savings from the development of a DST to reduce costs spent on EIA permitting by the offshore energy developers. The study of the implication of the marine EIA DST shows a quantifiable estimate of the savings potential for permit processes for sustainable offshore development, and results indicate a need for optimization of DST development, which can be an essential factor in its implementation and success.

 

Place, publisher, year, edition, pages
Karlskrona: Blekinge Tekniska Högskola, 2023
Series
Blekinge Institute of Technology Licentiate Dissertation Series, ISSN 1650-2140 ; 2
Keywords
DST, Decision Support Tools, subsea cables, statistical method, environmental risk, risk of accidents
National Category
Other Civil Engineering
Research subject
Systems Engineering
Identifiers
urn:nbn:se:bth-24264 (URN)978-91-7295-450-2 (ISBN)
Available from: 2023-02-08 Created: 2023-02-07 Last updated: 2023-04-19Bibliographically approved

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Olsson, AndreasFrånberg, OskarKulesza, Wlodek

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