N-1Redacted Work Order 9/2/2010
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3.0 CONCLUSIONS The wheel on the cross shaft was severely worn, which in turn caused the noise and vibration at the #1 pedestal area. The cause of the rapid deterioration of the wheel was the absence of sufficient back lash and tooth clear...
AI summary The text details mechanical failures in a machine, including a severely worn wheel causing noise and vibration, insufficient backlash between components leading to deterioration, and poor governor condition resulting in unstable control. A slight speed increase after tripping was attributed to faulty emergency stop valve seating.
4.0 RECOMMENDATIONS Due to the nature of this outage and the quick turn around, the following items are Identified for extra work at your earliest convenience: - The #1 bearing should be rebabbitted and the journal dressed to return cleara...
AI summary The document outlines maintenance recommendations for a generator component following an outage, including rebabbitting bearings, replacing inserts, inspecting bearings, and repairing governor valves to restore equipment to original specifications.
5.0 REPORT The work required to return the components to acceptable condition for return to service are detailed below: - The main and auxiliary governors were shipped off-site and refurbished to original specifications by Siemens. - The s...
AI summary The report details technical refurbishment work on mechanical components, including machining adjustments, interference fits, and alignment corrections. Siemens Energy Services performed repairs, while Nova Scotia Power Inc. made operational decisions, such as declining to fill a keyway. Precision measurements and adjustments were critical to achieving required tolerances.
NSPI, TRENTON 6.S., Unit 5, Me 3902 - EMERGENCY OUTAGE 0 RAFT CO PV - The cross shaft was placed back in position end float checked at 0.0015". - The main and auxiliary housings and bush assemblies were installed with new '0' rings, except...
AI summary The document details maintenance actions taken during an emergency outage at NSPI's Trenton Unit 5, including repairs to thrust bearings, cleaning of oil systems, and valve inspections. Nova Scotia Power oversaw the work with contractor assistance, ensuring system stability through pressure checks and component replacements.