There's no question about it - excessive piping vibration can cause real problems. Threaded connections can loosen.
Flanges can start leaking.
Pipes can be knocked off their supports. An in extreme cases, a pipe fatigue failure can occur. The entire subject of piping vibration cannot be discussed in this article, but I will highlight several items to consider. There are two major categories of piping vibration and several vibration types within each category. An engineer must know the type of piping vibration being dealt with before the vibration can be treated effectively.