 |
|
Sammis Power Retrofit
A $1.7 billion retrofit of the air quality system at the W.H. Sammis Plant in Stratton, Ohio, has dramatically reduced gas emissions from the 2,220-megawatt, coal-fired power generating facility.
Located on the Ohio River, the plant comprises seven power units that were constructed between 1959 and 1971. For the retrofit, Bechtel handled design, procurement, installation, and startup of three sulfur dioxide scrubbers, which are the main components of a flue gas desulfurization system designed to remove more than 95 percent of the sulfur dioxide from emissions at all seven units. The project also reduced emissions of nitrogen oxide by at least 64 percent.
Sammis includes 2,743 meters (9,000 feet) of flue gas duct that the project team has nicknamed “the Great Wall” for its size. The most striking features of the plant, however are two extremely tall chimneys—a 1,000-foot (305-meter) stack built in 1970, and a new 850-foot (259-meter) stack that was added as part of the retrofit.