pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 89)<br />
of the gas cooling towers at blast furnaces number three and<br />
four. Each of the concrete constructed sumps contains two 600<br />
gpm, 1100 x 72" vertical cantilever pumps manufactured by the<br />
Galligher Company. Each pump is powered by a 50 hp General<br />
Electric motor rated at 1800 rpm. Located just west of the gas<br />
cooler on the grounds of the remains of Dorothy Six is a 8'-0"<br />
wide x 20'-0" long x 5 , -6" deep quick dump sump constructed of<br />
concrete. The sump contains two 500 gpm vertical cantilever<br />
sludge pumps manufactured by Morris Pump Inc. Each pump is<br />
powered by a 15 hp Reliance Electric motor operating at 1200 rpm.<br />
Installation Date of Quick Dump Sump and Lift Pumps at blast<br />
furnaces numbers three and four: 1971.<br />
Installation Date of Quick Dump Sump and Lift Pumps at<br />
Dorothy Six: 1961.<br />
C. Clarifier Number Oner Sludge Pumps, and Associated Chemical<br />
Feed Equipment: Clarifier Number One is manufactured by the Dorr-<br />
Oliver Company and is located approximately 100'-0" west of the<br />
remains of Dorothy Six. It consists of a 90'-0" diameter x 12 * -<br />
0" high concrete basin. The floor of the basin slopes slightly<br />
toward the center. Located within the clarifier is a chain<br />
driven sludge rake powered by a 3 hp, 1750 rpm General Electric<br />
motor connected to a gear reducer. Encircling the circumference<br />
of the clarifier is a 2'-6" wide x 3'-0" deep launderer. Two 50<br />
gpm sludge pumps, powered by 10 hp motors, are located in a<br />
tunnel beneath the clarifier. Located near the clarifier on its<br />
southeastern side is a S'-O" diameter x 16*-0" high hydrochloric<br />
acid tank with a capacity of 6000 gallons. Two small pumps<br />
powered by 1/2 hp motors deliver the acid to the clarifier.<br />
Construction Date of Clarifier: 1957.<br />
Installation Date of Hydrochloric Acid Tank: 1980.<br />
D. Clarifier Slurry Lift Station and Lift Pumps: An<br />
approximately 12 , -0" wide x 25*-0" long x 6'-0" deep sump made of<br />
concrete construction is located just north of clarifier number<br />
one. Located within the sump are two 1500 gpm Nagle Sump Pumps<br />
which are powered by a 30 hp U. s. Electrical Enclosed Motor<br />
rated at 720 rpm.<br />
Construction and Installation Date: 1957.<br />
E. Clarifier Number Two and Sludge Pumps: Located just<br />
northeast of clarifier number one is a 90'-0" diameter x 12*-0"<br />
high basin with a floor that slopes slightly toward the center.<br />
Manufactured by the Eimco Company, the clarifier is equipped with<br />
a sludge rake powered by a 3 hp motor which is connected to a<br />
gear reducer. Encircling the circumference of the basin is a 2'-<br />
6" wide x 2 , -0" deep launderer. Two 50 gpm horizontal sludge<br />
pumps manufactured by Morris Pump Inc., and powered by 10 hp U.<br />
S. Electrical Company motors rated at 1800 rpm, are located in a