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• U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 91) Installation Date of Filters and Associated Equipment: 1979. H. Evaporative Hotwellr Hotwell Pumps, and Hotwell Strainer: The hotwell for the evaporative water treatment recycle system is located approximately 50*-0" northeast of the polymer feed building. It is a large underground concrete basin that measures 45'-0" wide x 62 , -6" long x 25'-0" high and is composed of five cells, a distribution cell and four pump cells which are separated by four Armco Model No. 35-05 sluice gates. Located above ground over each of the pump cells is a 5000 gpm Wilson- Snyder vertical turbine pump which is powered by a 2 00 hp U. S. Motor rated at 1170 rpm. A 24" Kinney Automatic Strainer is located at the discharge or northern end of the hotwell. Construction and Installation Dates: 1979. I. Evaporative Cooling Tower: The cooling tower for the evaporative water treatment recycle system is located approximately 30'-0" west of blow engine house number three. Manufactured by the Ceramic Cooling Tower Company, the cooling tower is a six cell, forced draft structure laid out linearly on a north-south axis. It has capacity rating of 15,000 gpm. The Tuf-Lite Company fans at the top of each cell are powered by a 75 hp Reliance Duty Master Motor rated at 900/1800 rpm. The tower is designed for an inlet temperature of 115 degrees F. and an outlet temperature of 90 degrees F. Installation Date: 1979. J. Evaporative Coldweli and Coldwell Pumps: The coldwell for the evaporative water treatment recycle system is adjacent to the evaporative cooling tower on its eastern side and is laid out on a north-south axis. An underground concrete basin measuring 57'- 6" wide x 67'-0" long x 24'-0" deep, it is divided into five cells which are separated by sluice gates identical to those in the hot well. Over each of the cells is located an above ground vertical turbine pump. The three most northern pumps are manufactured by Wilson-Snyder and rated at 5000 gpm. The other two pumps are also manufactured by Wilson-Snyder but are rated at 6000 gpm. Each of the pumps is powered by a 300 hp U. S. Electrical direct drive motor operating at 1200 rpm. Construction and Installation Date: 1979. K. Make-Up Water and Blow-Down Water Monitoring Building With Associated Chemical Feed Equipment: Located just north of the coldwell pumps for the evaporative water treatment recycle system is a 14'-o" wide x 42'-0" long x 10'-0" high cinder block building set upon a concrete foundation. Metering equipment for the system's make-up and blow down water pipelines is located along the western wall of the building. A 2,000 gallon capacity carbon steel chemical dispersant tank is located in the southeast
* U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 92) corner of the building. The feed pumps which were associated with the tank have been removed. Construction and Installation Date: 1979. L. Sulfuric Acid Feed station: Located at the southern end of the evaporative cooling tower, the sulfuric acid feed station consists of a Sharpsville manufactured 4,000 gallon capacity carbon steel sulfuric acid storage tank set inside of a lime filled pit, and two 10.3 gph metering pumps manufactured by the Milton Roy Company. The pumps are powered by two 1/2 hp integral motors rated at 1725 rpm. Installation Date: 1979. M. Blast Furnace Numbers Three and Four Chemical Additive Building and Associated Chemical Feed Equipment: Located just west of the gas cleaning equipment at blast furnace number three is an approximately lO'-O" wide x 3 0*-0" long x 10'-0" high cinder block building. A 5'-4" diameter x 12 , -0" long carbon steel chemical storage tank with a capacity of 2000 gallons, manufactured by the Betz Company, is located in the southeast corner of the building. Construction and Installation Date: 1979. N. Evaporative Control Building and Associated Electrical Equipment: The 14*-0" wide x 120'-0" long x 10'-0" high control building for the evaporative water treatment recycle system is attached to the western side of blow engine house number three. Set upon a concrete foundation, the cinder block building houses the main control panel for the evaporative water treatment recycle system at its northern end and electrical circuit breakers for the system at its southern end. Construction and Installation Date: 1979. O. Non-Evaporative Gas Washer Hotwell and Gas Washer Hotwell Pumps: The gas washer hotwell for the non-evaporative water treatment recycle system is located approximately 4 0*-0" northeast of the hot blast stoves for Dorothy Six. It is composed of an 184,000 gallon capacity underground concrete basin measuring 32'-6" wide x 40'-0" long x 19'-0" high. Water is allowed into or diverted away from the hotwell by separate sluice gates. Two 3000 gpm Wilson-Snyder vertical pumps are located above ground over the hotwell. Each pump is powered by a 400 hp U. S. Electrical Titan Line motor rated at 1180 rpm. Construction and Installation Date: 198 0. P. Non-Evaporative Gas Cooler Hotwell and Gas Cooler Hotwell Pumps: The gas cooler hotwell for the non-evaporative water treatment recycle system is located adjacent to the gas washer hotwell on its northern side. The 19'-6" wide x 40 , -0 M long x
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