Safety and Reliability Improvements of Valves and Actuators for the Offshore Oil and Gas Industry Through Optimized Design
Safety and reliability improvements of valves and actuators for the offshore oil and gas industry through optimized design by Karan Sotoodeh Thesis submitted in fulfilment of the requirements for the degree of DOCTOR PHILOSOPHIAE (Dr. Philos.) Faculty of Science and Technology 2021 UniversityofStavanger NO-4036Stavanger NORWAY www.uis.no ©2021 Karan Sotoodeh ISBN:877 ISSN: PhD:ThesisUiSNo.7 Abstract Valves are essential components of piping systems in the oil and gas industry, especially offshore, where they are used for stopping or starting the fluid, flow regulation, and back flow prevention, as well as safety reasons. The efficiency, safety and reliability of an oil and gas plant is largely dependent on the handling and transportation of fluid through the piping system, including industrial valves. In the offshore sector of the oil and gas industry, valve failure for different reasons, such as corrosion and material failure, inadequate strength against loads, nonconformance to the international standards, etc., is a big risk, with severe negative consequences. Some of the negative impacts of valve failure in the oil and gas industry, especially the offshore sector, can be summarized as loss of asset and production and Safety and Environmental issues (HSE), including problems like environmental pollution, loss of human life in some cases and jeopardizing safety and reliability, etc. Thus, developing methods to improve the design, selection, safety and reliability of valves and actuators is essential and the main objective of this thesis. It should be noted that actuators are mechanical devices installed on the valves, and the performance of the valves is largely dependent on the actuators.
[Show full text]