We have been experience early life failures of a NH92 Hydramotor in a valve actuator application. The mounting is vertical and in-line to within a few thousands of an inch. A split coupling is used to assure that no side loading is introduced between the actuator and valve stem. The...
I am involved with a root cause investigation on a fan motor (100HP) bearing failure. Vibration Analysis is periodically performed (at least every 6 months) on this fan. Motor bearings had been replaced approximately 1 year prior to the failure, fan runs approximately 6 months out of a 12...
I have large diesel generators that occaisionally exhaust into a concrete enclosure. The concrete was originally specified as 5000 PSI minimum. The exhaust has plenty of exit points from the structure but the exhaust will impinge on a concrete roof approximately 4 ft from the pipe exit...
We utilize a centrifugal pump, that draws suction from a day tank, and pumps #2 Fuel Oil through an eductor located in an underground storage tank to refill the day tank. The Day tank supplies FO to a Nuclear Standby Diesel Generator. The drive flow is approximately 100 GPM and the draw from...
