Mooring failure detection systems for floating offshore installations. Mooring Integrity Joint Industry Project Phase 2
Mooring integrity for floating offshore installations is an important safety issue for the offshore oil and gas industry. This report is one outcome from Phase 2 of the Joint Industry Project on Mooring Integrity. This work ran from 2008 to 2012 and had 35 industry participants. It followed the Phase 1 work described in HSE Research Report RR444 (2006). The Phase 2 work compiled research on good practice and an overview is given in HSE Research Report RR1090 (2017).
Offshore mooring failure detection systems aim to provide real-time monitoring information in order to alert on-board personnel to mooring line failures. This report: summarises the regulations, guidance and standards on failure detection systems; system specification aspects identified by operators; systems being marketed; and systems being considered as potential developments. General system specification considerations include: identifying where failures can be detected; determination of alarm limits; and ensuring an effective user interface and sufficient user training. Specific technical considerations include tension monitoring and positioning system selection. Systems being marketed are grouped as: direct tension measurement; tension-angle measurement; tension-stress measurement; sonar; and visual.The report includes many examples and photographs from previous case histories to demonstrate the particular points of interest.
The Research Reports listed below and the work they describe were funded by the Health and Safety Executive (HSE). Their contents, including any opinions and/or conclusions expressed, are those of the authors and do not necessarily reflect HSE policy.