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Generator Cooling Fan Vibrational Problems: A Design and Operational Case in Jordan

Naamneh, Rakan and Alboursh, Asem and Al-Amer, Ayman (2017): Generator Cooling Fan Vibrational Problems: A Design and Operational Case in Jordan. Forthcoming in: Journal of Economics Bibliography , Vol. 2, No. 154 (20 May 2017): pp. 25-65.

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This project covers certain types of rotor generator vibrational problem, including both conventionally-cooled (indirect copper cooling) windings and direct cooled copper windings as well as those with spindle and body mounted retaining rings. The options for rewinding, modifying, or upgrading are provided for each case type as encountered in the Jordan Petroleum Refinery. Generally; when dealing with generator rotors, problems like oversizing, misalignment, rotor imbalance, off-design operation, lubrication problems, shaft seals, cavitation, balancing system, and vibration are encountered. Methods of resolving vibration problem diagnosis were discussed using different techniques like vibration design analysis which will enhance root cause problems. We have proposed different maintenance best practice like rotor dynamic balance, appropriate operation, seals selection, and lubricant selection. At the end we have proposed a design solution appropriate for failure prevention using rotor balancing after rework or modifications.

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