Watts Bar Unit 2 Completes Power Ascension Testing

By Editors of Power Engineering

Unit 2 of the Watts Bar nuclear power plant has successfully completed tests designed to validate safety and reliability at the facility, reports the Tennessee Valley Authority (TVA).

The Unit completed its final power ascension test last Friday, safely returning to full power afterwards. It is now producing more than 1,150 MW as it begins a pre-commercial operations reliability period of extended full-power generation.

Power ascension testing is a highly detailed and rigorous series of tests performed at various power levels to ensure all systems operate safely and as designed.

TVA reports that a switchyard transformer fire on August 30 did not directly impact systems at Unit 2, which responded exactly as designed. Power ascension testing was temporarily placed on hold while the affected transformer was replaced and operators completed a thorough inspection and testing process on affected switchyard equipment.

Combining the output of its two nuclear generating units, the Watts Bar station is now supplying enough electricity to serve 1.3 million homes.

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