Decommissioning Framework for Offshore and Oil and Gas Installations

Ford, JL, Loughney, S ORCID: 0000-0003-0217-5739, Blanco-Davis, E ORCID: 0000-0001-8080-4997, Shahrokhi, A ORCID: 0000-0002-4484-4606, Bras, AA ORCID: 0000-0002-6292-2073 and Wang, J ORCID: 0000-0003-4646-9106 (2025) Decommissioning Framework for Offshore and Oil and Gas Installations. In: Proceedings of the 35th European Safety and Reliability & the 33rd Society for Risk Analysis Europe Conference . pp. 2257-2264. (35th European Safety and Reliability Conference (ESREL 2025) and the 33rd Society for Risk Analysis Europe Conference (SRA-E 2025), 15th Jun - 19th Jun 2026, Norway).

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Abstract

Decommissioning an offshore oil and gas installation generates large volumes of waste materials, some of which can be classified as hazardous. This, coupled with the changes in operators, workforce and numerous legislations and regulations, means that decommissioning process is complex and subject to confusion. This paper outlines a decommissioning framework for offshore oil and gas installations, which aims to provide guidance throughout the decommissioning process as well as bringing clarity, consistency and sustainability to the process. The framework is informed by previous research findings, including the analytical hierarchy process findings, the Bayesian network and discussions with industry experts, which highlighted key factors in handling hazardous waste. The key factors included understanding the legislation, sharing effective knowledge, and identifying waste materials. The framework has been applied to a historical case study to demonstrate its relevance and effectiveness.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TC Hydraulic engineering. Ocean engineering
Divisions:	Civil Engineering and Built Environment Engineering
Publisher:	Research Publishing Services, University of Stavanger
Date of acceptance:	1 July 2025
Date of first compliant Open Access:	28 April 2026
Date Deposited:	28 Apr 2026 10:06
Last Modified:	28 Apr 2026 10:06
DOI or ID number:	10.3850/978-981-94-3281-3_esrel-sra-e2025-p5115-cd
URI:	https://researchonline.ljmu.ac.uk/id/eprint/28471

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