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What is High Vibration Issues in TDBFP Pump about?

A 500 MW power plant was experiencing high vibrations in the pump bearing of one of its turbine driven feedwater pumps (TDBFP). Measurements showed vibrations increasing significantly above 4000 rpm. Inspections found missing hanger supports which were added, and suction and discharge piping were corrected. Replacing the drive end bearing slightly reduced vibrations but they remained high. Replacing the pump cartridge found metal chips in the impeller which were removed, and components redressed. However, a

Author

Charu Chhabra

Language

EN