9/14/2006
NEW STACK RISING AT AMOS PLANT AS PART OF SCRUBBER PROJECT

WINFIELD, W.Va., September 14, 2006 – A new stack is growing skyward at Appalachian Power’s John E. Amos Plant at a rate of more than 100 feet per week. When complete, the stack will stand 900 feet high. The concrete structure is being built near the plant’s original Unit 3 stack.

The stack is part of a more than $1 billion project to install flue gas desulfurization (FGD) systems on all three generating units at the plant. The FGD systems, commonly known as scrubbers, will reduce sulfur dioxide emissions at the plant by as much as 98 percent.

“We started construction late last year, but until now people passing by the plant probably haven’t noticed much of a change,” said Frank Fetty, Amos Plant FGD Project Process Owner.

When operational, the stack will change the look of the plant in yet another way. Water used in the scrubber will rise out the stack along with warm air to create a white, billowy plume of water vapor, much like the water vapor that now rises from the plant’s cooling tower.

The stack is being built using the slipform construction, which involves inner and outer form faces, open at the top, into which concrete is poured. As recently-poured concrete cures enough to support its own weight and retain its shape, the slipform is inched upward by hydraulic jacks that climb on vertical rods embedded in the concrete. Slipform construction was developed in Germany to build missile silos during World War II.

Pullman Power, LLC is the primary contractor for the stack construction.

The stack and stack foundation will contain 13,000 cubic yards of concrete. An estimated 124,000 cubic yards of concrete will be used throughout construction of the FGD system.

The Amos project is part of Appalachian Power parent company American Electric Power’s plan to invest $3.7 billion through 2010 in environmental control equipment at its coal-fired power plants.

Appalachian Power provides electricity to 1 million customers in Virginia, West Virginia and Tennessee (as AEP Appalachian Power). It is a unit of American Electric Power, one of the largest electric utilities in the United States, with more than 5 million customers in 11 states. AEP ranks among the nation’s largest generators of electricity, owning nearly 36,000 megawatts of generating capacity in the U.S. AEP also owns the nation’s largest electricity transmission system, a nearly 39,000-mile network that includes more 765 kilovolt extra-high voltage transmission lines than all other U.S. transmission systems combined.

Joe Haynes
Amos Plant Community Relations Manager
(304) 759-3430, rjhaynes@aep.com

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