recently one boiler feed water pump tripped on high vibration. when physically inspected the coupling was found damaged. Many shims were sheared. a new shim pack coupling was installed and pump was restarted after alignment. the new values were high and close to the trip level as shown in the attached file. vibration was at 1x. phase was steady and stable. the NDE readings were very low as shown in the first page of the attachment. another interesting observation was the bode plot. As the speed was going down the vibration was increasing up to 190 microns. It is surprising to see the vibration increasing instead of decreasing. Also vibration exceeded bearing clearance which was 110 micron during the inspection.