pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 94)<br />
treatment recycle system is located on the first floor at the<br />
southern end of the building. The northern end of the building's<br />
first floor is occupied by electrical circuit breakers. Located<br />
directly above the main control panel on the second floor of the<br />
building is the metering equipment for the system's make-up and<br />
blow-down water pipelines. An 8*-0" diameter x 12 f -0" high 4500<br />
gallon capacity carbon steel sodium hydroxide tank, manufactured<br />
by Sharpsville Steel Fabricators, is located on the second floor<br />
of the building just north of the make-up and blow-down metering<br />
equipment. Located at the base of the tank are two small sodium<br />
hydroxide feed pumps which are each powered by a 1/2 hp General<br />
Electric Statotrol motor rated at 1735 rpm. Located just east of<br />
the control building near its centerline is a 5'-4" diameter x<br />
12 f -0" high corrosion inhibitor storage tank. At the base of the<br />
2000 gallon capacity carbon steel tank are three 1.4 gph feed<br />
pumps which are each powered by 1/2 hp motor rated at 1725 rpm.<br />
Also just east of the control building at its southern end is a<br />
560 gallon capacity stainless steel scale inhibitor storage tank.<br />
Located at the base of the 4'-0" diameter x 5'-0" tank are three<br />
1.4 gph feed pumps, each powered by a 1/2 hp motor rated at 1725<br />
rpm. Construction and Installation Date: 1980.<br />
IV. Hot Blast Air Facilities:<br />
A. Hot Blast Stoves at Blast Furnace Number One: Four 21'-0"<br />
diameter x 84'-0" high hot blast stoves are laid out linearly<br />
just south of blast furnace number one. Each stove is equipped<br />
with a chimney stack extending from the top of the stove's dome,<br />
a 28" diameter cold blast air connection, a 32" inside diameter<br />
refractory brick lined hot blast air connection, and a 33" inside<br />
diameter refractory brick lined burner connection. An 18"<br />
diameter pipeline, complete with valving, runs from the cold<br />
blast main to the each stove's hot blast connection. Cold blast<br />
air was mixed with the hot blast air through this line in order<br />
to equalize the temperature of the hot blast while the stove<br />
provided combustion air to the furnace. The 12,000 scfm capacity<br />
burner and motor powered combustion air fan located at the burner<br />
connection of each stove was designed by Arthur G. McKee and Sons<br />
Inc. All connections between the stoves and blast furnace number<br />
one have been severed.<br />
Installation Date of Stoves: 1901.<br />
Installation Date of Burners and Combustion Air Fans: 1956.<br />
B. Hot Blast Stoves at the Remains of Blast Furnace Number<br />
X&o_: Laid out linearly just north of the remains of blast furnace<br />
number two are four 21'-0" diameter x 96'-0" high Diehl Central<br />
Draft hot blast stoves. Built by the Riter-Conley Company, each<br />
stove has a total heating surface of 56,750 sq. ft. Each stove