In this project a mapping of vibration problems was performed in turbines and generators in nuclear power plants. Although turbines and generators are not safety related components, it is of course crucial to have them functioning properly to have a high availability and efficiency in the plant. Different problems related to turbine and generator vibrations have arisen and it is therefore important to improve performance and minimize the risk for vibration problems.
This technical report (Part 1) presents for each of the different subgroups a physical and practical description of the specific lateral vibration problem, it describes the applied investigation techniques, reports about the observed lateral vibrations in the power plants and suggests mitigation activities, which were used to solve the vibration problems.
The results presented in this report is part of a series of two. The other report (2016:295) focuses on torsional and stator vibrations.
