The manual shut down is expected to help operators establish the working conditions needed to perform the required maintenance on the valve.
The Unit 1 is scheduled to continue operation at full power, while the repair work is performed.
Situated in Luzerne County, Pennsylvania, the Susquehanna nuclear facility is co-owned by PPL Susquehanna and Allegheny Electric Cooperative, and is operated by PPL Susquehanna.
The two-reactor plant produces approximately 63 million kilowatt of hours per day, and has been in operation since 1983.
