Watts Bar 2 Shuts Down During Power Ascension Testing

Watts Bar 2 down during power ascension testing

The 1,150-MW Watts Bar 2 nuclear plant in Tennessee was taken offline just days after it connected to the power grid.

Unit 2 was at 12.5 percent power when a safety injection actuation occurred, according to a report filed with the U.S. Nuclear Regulatory Commission. The reactor then automatically tripped offline. Preliminary data suggests that the No. 1 high pressure turbine governor valve failed open, causing a steam header pressure rate of decrease safety injection actuation signal. Backup safety equipment performed as designed to safely shut down Unit 2.

Both reactors are stable, and Unit 1 continues to operate at full power.

Unit 2 achieved initial criticality on May 23 and is currently undergoing power ascension testing. Plant owner and operator the Tennessee Valley Authority (TVA) plans to have the operator running at full power by the summer.

Subscribe to Nuclear Power International magazine

Did You Like this Article? Get All the Energy Industry News Delivered to Your Inbox

Subscribe to an email newsletter today at no cost and receive the latest news and information.

 Subscribe Now


The Time is Right for Optimum Reliability: Capital-Intensive Industries and Asset Performance Management

Imagine a plant that is no longer at risk of a random shutdown. Imagine not worrying about losing...

Going Digital: The New Normal in Oil & Gas

In this whitepaper you will learn how Keystone Engineering, ONGC, and Saipem are using software t...

Maximizing Operational Excellence

In a recent survey conducted by PennEnergy Research, 70% of surveyed energy industry professional...

Leveraging the Power of Information in the Energy Industry

Information Governance is about more than compliance. It’s about using your information to drive ...