Subsea Condition Monitoring
Abstract
Subsea developments have the later years been increasingly popular. Subseadevelopments pose some major challenges towards safety, operation andmaintenance. The study is focused on how condition monitoring can be used inoperation and maintenance of Subsea production systems.The primary purpose and goal of the thesis is to investigate how condition monitoringcan be used to achieve high level of safety, availability and profit in operation andmaintenance of Subsea production systems. Ormen Lange will be used as a casestudy to fulfill the goal and objectives of the master thesis.For the master thesis an inductive approach, have been used.Data and information for the master thesis has been sourced from non-publicdocumentation provided by A/S Norske Shell, informal discussions with Shellengineers, conference proceedings, scientific articles, books and sales materialprovided by companies that offer products or services for condition monitoring. Themajority of data and information used in the study can be categorized as tertiary data.The report describes state-of-the-art within Subsea condition monitoring technologythat is commercially available from the largest equipment manufacturers. As well,future developments using artificial intelligence, is also detailed.The author provides a technical and operational description of the Ormen LangeSubsea choke modules. As well, the procedures for commissioning, monitoring,inspection and diagnostics for the Ormen Lange Subsea choke module is outlined.A discussion on the performance of the procedures for condition monitoring of theOrmen Lange Subsea choke modules, as compared to state-of-the-art withincondition monitoring featured in the master thesis.The results are presented, as well a short conclusion. Suggestion for further workinclude performing an asset management gap analysis and establishing a strategicroadmap for asset management.
Keywords: Subsea, Ormen Lange, condition monitoring, maintenance, operationand maintenance, Subsea production systems