The 1,140 MW Unit 2 at the Susquehanna nuclear power plant in Pennsylvania resumed operations on June 29 after damaged turbine blades were replaced during a planned refueling and maintenance outage.
After discovering the blade damage in Unit 2 in April, workers found similar blade damage while examining the 1,149 MW Unit 1 in May and shut it down. Unit 1 resumed generating electricity June 24. Both units are GE Type 4 boiling water reactors.
The planned upgrade work on Unit 2 included installing an integrated digital control system, reactor feed pumps and replacing other power pumps that provide water to the reactor. The work concluded a four-year project expected to increase the amount of electricity the Susquehanna nuclear plant can safely generate by 159 MW total.
Parent company PPL Corp. (NYSE: PPL) has estimated the after-tax financial impact of the turbine blade inspection and replacement work, including energy-sales margins and repair costs for both units, to be in the range of $50 million to $60 million.
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