pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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tunnel beneath the clarifier.<br />
Installation Date: 1979.<br />
U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 90)<br />
F. Polymer Feed Building and Polymer Feed Equipment: The 12*-<br />
8" wide x 20 f -8" long x 10 f -0" high polymer feed building is<br />
constructed of concrete block and is located just north of<br />
clarifier number two. Located along the southeastern wall of the<br />
building is a polyelectrolyte feed system manufactured by the<br />
Pennwalt Corporation. The system includes a series A-690<br />
volumetric feeder, two 100 gallon fiberglass tanks, one heater<br />
unit, one type RG portable mixer, one Viking model HL-32V<br />
transfer pump, and two viking model H-32D metering pumps. Two 1<br />
gpm Moyno Progressing Cavity polyelectrolyte feed pumps,<br />
manufactured by Robbins and Myers Inc., are located along the<br />
northeastern wall of the building. Each pump is powered by a U.<br />
S. Electrical Company 1/4 hp motor rated at 1800 rpm.<br />
Construction and Installation Dates: 1979.<br />
G. Filter Cake House and Sludge Dewatering Equipment: Located<br />
approximately 30'-0" west of, and located between clarifier<br />
numbers one and two is the 30*-0" wide x 36'-0" long filter cake<br />
house. The two and one-half story corrugated metal exterior,<br />
steel framed building is laid out on a north-south axis. Each of<br />
the building's two bays is covered by a pitched roof set at<br />
different elevations. Located on the ground floor of the western<br />
bay are two vacuum pumps laid out on a north-south axis. The<br />
southern vacuum pump, manufactured by the Ingersoll - Rand<br />
Corporation, is powered by a 100 hp Westinghouse Life Line Motor<br />
rated at 1775 rpm. At the northern end of the ground floor is<br />
Size 4001 Nash -Hytor vacuum pump powered by a 150 hp U. S.<br />
Electrical Enclosed Motor rated at 1200 rpm. The western bay's<br />
second floor houses two 4 , -0" diameter x 6'-0" high air receivers<br />
manufactured by the Eimco Corporation of Salt Lake City, Utah.<br />
Located adjacent to each receiver is a 5 hp, 1740 rpm Duty Master<br />
motor with an associated 1" diameter piping. The eastern bay of<br />
the building is composed of a top floor set directly above an<br />
open dumping space. Set along the upper western wall of the<br />
eastern bay are 4'-0" diameter x 6'-0" high condensate receivers<br />
which are connected by a 16" pipe to the air receivers on the<br />
second floor of the western bay and to the two vacuum disc filter<br />
assemblies located on the floor adjacent to them. Laid out on a<br />
north - south axis, each vacuum disc filter assembly is<br />
manufactured by the Eimco Corporation and consists of a set of<br />
five 8'-6" diameter discs set in a basin. The eastern side of<br />
the basin consists of a slurry tub, the western side consists of<br />
a chute leading directly to the dumping area below. Associated<br />
with each filter assembly is a set of compressed air and vacuum<br />
piping.<br />
Construction Date of Building: 1957.