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Sensor design for saltwater ingress detection in high reliable all-electric deep sea actuators
Institution:1. Institute for High Integrity Mechatronic Systems, University of Applied Sciences Aalen, Beethoventraße 1, 73430, Aalen, Germany;2. Advanced Mechatronics GmbH, Robert-Bosch-Straße 6, 73460, Hüttlingen, Germany;1. School of Safety Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, China;2. Key Laboratory of Mine Safety and High Efficient Mining Jointly Built by Province and Education Ministry, Anhui University of Science and Technology, Huainan, Anhui 232001, China;3. College of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China;1. College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo, 454003, Henan, PR China;2. State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Jiaozuo, 454003, Henan, PR China;3. State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Jiaozuo, 454003, Henan, PR China;1. College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;2. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China;3. Fire and Explosion Prevention Research Branch, China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing, 400037, China;1. Laboratoire de L’Ingénierie de La Sécurité Industrielle et de Développement Durable, Institut de Maintenance et de Sécurité Industrielle, Université Mohamed Ben Ahmed Oran 2, Sécurité Industrielle et Environnement, Oran, 31000, Algeria;2. Laboratoire Matériaux LABMAT, Ecole Nationale Polytechnique D’Oran- Maurice Audin, Oran, 31000, Algeria;1. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, Heilongjiang, China;2. College of Shipbuilding Engineering, Harbin Engineering University, Harbin, Heilongjiang, China
Abstract:Subsea oil and gas production relies on Xmas Trees which are mounted on boreholes. Xmas Trees are an arrangement of different valve types and sizes actuated by hydraulic, electro-mechanic or all-electric actuators. All these actuators sharing problems with saltwater ingress and the re-sulting increased wear. This paper investigates potential effects which can be measured after saltwater ingress. Extensive testing is executed and the investigated effects are used for novel sensor designs. These designs are evaluated regarding certain requirements and a resulting sen-sor design is proposed for industrialization. The resulting sensor can then be used to collect new important data to support optimal maintenance in the subsea industry.
Keywords:Optimal maintenance  Condition monitoring  Xmas tree  Reliability  Salinity  Deep sea actuator
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