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Pipe Vibrations in Nuclear Applications - Analysis and mitigation with the DIAM matrix tool applied on pipe vibrations

| 2017:451 | Mikko Merikoski
Pipe vibrations cause significant economic losses and safety hazards in nuclear power plants. Quick detection of and reaction to a pipe vibration problem cuts down the risk of failures and reduces the downtime.
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To reduce the time needed for solving pipe vibration problems, a holistic study of the field of pipe vibrations was performed in this project. The report was constructed as a handbook for solving pipe vibration problems, which can be used without expertise in the area. In addition, DIAM-Matrix tool (Detection, Investigation, Analysis and Mitigation) was developed to simplify the troubleshooting. A systematic approach was developed to simplify the process. This was realized with DIAM-Matrix tool (Detection, Investigation, Analysis and Mitigation) which requires only marking of detections of continuous monitoring and findings of investigation of the system. The matrix tool guides the user through the process and recommends following actions. Based on the investigation findings the matrices suggest useful analysis methods and possible mitigation methods for the vibration problem.