TVA completes its largest planned gas plant outage ever at John Sevier
- Jan 6, 2022 3:39 pm GMT
The recently completed fall planned outage at
It was also the latest in a series of actions to help ensure safe, reliable, low-cost power across the Valley during the cold winter months ahead.
John Sevier Combined Cycle (JSCC), a 3 on 1 gas combined cycle plant, returned to service
It was the most extensive fall outage to date of any plant in
"This is the largest outage at JSCC since the plant began commercial operation in 2012 to replace the coal plant," Watson said. "This also is the largest work scope ever for any
The long list of JSCC outage activities included upgrades, refurbishments, routine and major maintenance on all three combustion turbines, one steam turbine, and their associated generators. In addition, a major steam turbine controls upgrades, replacement of all steam blending valves, reliability maintenance, winterization, and more were performed during the outage.
Power Operations collaborated with
"This project was extensive in scope and scale," said
Lagoon Creek CTs main gas pressure regulator valves replaced
Colbert CTs 3&4 main generator step-up transformer, the critical link between the power station and the transmission network, often runs day and night at full load under extreme thermal loading, replaced
Gallatin CTs common power refurbishment projects (in progress)
Magnolia combined cycle Unit 3 controls upgrade and steam turbine generator field rewind (in progress)
In addition to investments in its generation and transmission assets,
That commitment paid off in
"Severe weather requires preparation, planning, resources, and most of all, a skilled and dedicated workforce," said
"Natural gas is a bridge that will help ensure reliability as
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