Abstract
Abstract For ensuring the operational safety of offshore service vessels (OSVs) during critical operations, marine classification agencies recommend operating redundant diesel generators (DGs) as a spinning reserve for dynamic positioning (DP) systems. In view of the reduced fuel efficiency and increased emissions of DG sets when operated at low loads, lithium-ion (Li-ion) batteries are preferred as a green choice to serve the class-recommended DP power backup for 12 min. Based on the on-demand reliability analysis and Li-ion battery failure models, it is identified that an OSV with a 1.6-MW‐capacity DP system requires 538 kWh of Li-ion battery power to reliably replace a spinning DG set in serving power backup for 12 min. Based on the IEC61508/11 health, safety, and environment framework, the methodology to identify the OSV risk under various operational conditions and the battery system minimum maintenance interval requirements to meet various safety integrity levels are described.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
