along the Ohio River southwest of Louisville, the Cane Run Unit 7 Power Plant will bring
a dramatic reduction in emissions compared with conventional electricity
sources, while providing up to 660 megawatts of capacity to this area of
Kentucky—the amount needed to power approximately 660,000 homes. Louisville Gas
& Electric and Kentucky Utilities’ new 2 x 1 combined-cycle plant replaces
existing coal-fired units with cleaner sources of energy to meet the
Environmental Protection Agency’s strict environmental regulations.
The Cane Run Unit 7 Power Plant is located along
the Ohio River southwest of Louisville in Jefferson
Cane Run Unit 7 uses Siemens class gas turbine
technology to meet increasing energy demands.
The new combined-cycle plant will replace the older
existing coal-fired units.
The joint venture project between PCL Industrial Construction Co. and
Black & Veatch’s wholly owned subsidiary, Overland Contracting, Inc.,
included engineering, procurement, construction, and start-up/ commissioning.
Under the Kentucky Public Service Commission, energy providers must meet the
needs of their customers by using the lowest-cost alternative available, which
in this case meant a switch from coal-fired to natural gas units. For Kentucky
residents, Cane Run Unit 7 translates into low-cost, reliable, and cleaner
energy for years to come.
to gain a competitive advantage in a marketplace governed by fuel costs and
volatile electricity demand, owners LG&E KU sought out technology that
would provide operational flexibility, high efficiency, and high reliability.
To that end, they selected the Siemens SGT6- 5000Fee (efficiency enhanced) gas
turbine technology— the first-of-its-kind—for the Cane Run project. Because new
technology has no operating history, there was reason for concern about
potential flaws that could cause delays.
field modifications and commissioning risks could have had a major impact on
the schedule, the project team carefully assessed potential challenges of
applying the technology during the engineering phase to develop an
implementation plan that would facilitate success. The joint venture team
fostered a transparent relationship with LG&E KU and included them in all
project meetings so they could understand at firsthand any potential risk or
NEARLY UNSOLVABLE PUMP-AND-MOTOR MYSTERY
a crucial circulating water pump and motor began malfunctioning in November and
the supplier provided no assistance, the project team worked through a series
of different solutions without luck. As the project completion date neared, PCL
sent the equipment to the shop for a total rebuild, knowing that temperature
issues prevented running of the motor within design specifications.
a rebuild and reinstallation, vibration troubles continued, so the team cut the
welds, ultimately to no avail. Only when they rewelded the gussets—thick sheets
of steel at the baseplate of the pump—did the vibration subside. When the pump
manufacturer ran the pump the following day, it performed far better in terms
of vibration than previously. The solution, when it came, would not have been
possible without the commitment of the project team, PCL’s JV partner, and the
completion of the Cane Run Unit 7 Power Plant, the Louisville Gas &
Electric Company and Kentucky Utilities Company is now providing Kentucky
families with newer and cleaner sources of energy.