Multi-purpose offshore construction vessels play a key role in the installation, maintenance, and decommissioning of offshore infrastructure by enabling demanding operations such as subsea pipeline installation, subsea structure deployment, and heavy lifting. Owing to the complexity of offshore operations and the stringent safety requirements, successful project execution depends directly on the availability and reliability of the vessel's critical technical systems. Failures of critical systems may result in operational downtime, increased project costs, and risks to personnel, the vessel, and the marine environment.
This bachelor's thesis examines the management of the availability of critical technical systems on multi-purpose offshore construction vessels. The theoretical part presents the main characteristics of these vessels, their key technical systems, and the fundamental concepts of availability, reliability, maintainability, and system criticality within the RAMS framework. Attention is given to equipment failures, root cause analysis (RCA), failure reporting procedures, and the role of computerized maintenance management systems in supporting operational availability.
The practical part is based on a conceptual case study of a multi-purpose offshore construction vessel. It analyses the influence of overdue maintenance tasks and equipment failures on the availability of critical systems. Special emphasis is placed on maintenance prioritization according to system criticality, monitoring of key performance indicators (MTBF, MTTR, operational availability, and non-productive time – NPT), and the application of the AMOS computerized maintenance management system. Based on the findings, recommendations are proposed to improve availability management, reduce operational downtime, and enhance the safety and efficiency of offshore operations.
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