pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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operation.<br />
U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 193)<br />
c. Fume Hoods: A 13*-8" diameter, water cooled, fume<br />
hood comprised of a membrane-type construction is located<br />
directly above each, furnace. Each hood doglegs upwards to a<br />
quencher on the top floor of the building.<br />
d. Scrap Charging Track: A wide gauge track runs along<br />
the floor on the charging or eastern side of the furnace. The<br />
track carried a scrap charging transfer car before scrap charging<br />
was accomplished with overhead cranes.<br />
e. Lfrtile AflflXtJ-ve Bins: Four 400 cu. ft. capacity<br />
ladle additive bins laid out linearly on a north-south axis are<br />
suspended from the service floor just south of furnace number two<br />
on its tapping or western side. Two of the bins contained<br />
ferromanganese, and two contained ferrosilicon.<br />
f. Ladle Additive Chutes: A steel framed chute hangs<br />
from the floor on the northern and southern side of each furnace<br />
at a 45 degree angle. The chutes direct ferromanganese or<br />
ferrosilicon into the teeming ladle after the furnace has been<br />
tapped.<br />
g. Elevator Shaft: One 12'-2" wide x 16*-9" long<br />
elevator shaft leading from the ground floor to the roof of the<br />
building is located 13'-7" south of furnace number one's main<br />
control building on its tapping side.<br />
h. Main Office and Chemical Laboratory Building:<br />
Located 14'-3" due south of the elevator shaft is a one story,<br />
351-411 wide x 212'-0" long concrete block building. The building<br />
houses the BOP shop's main offices, its chemical laboratory, and<br />
locker rooms.<br />
3. Service Floor: The 86■-0" wide x 225'-0" long service<br />
floor is composed of a steel framed platform 32'-3" above the<br />
operating floor. The northern edge of the floor coincides with<br />
the northern edge of the operating floor.<br />
a. Batching Hoppers: One ll'-9 1/2" top I.D. x 3'-6<br />
5/8" bottom I.D. x 16'-2" high cone shaped batching hopper is<br />
suspended from the batching floor just south of the fume hood for<br />
each furnace. A gate operated, water cooled flux chute leads<br />
from the bottom of each batching hopper at a 40 degree angle<br />
through the fume hood into the top opening of each furnace.<br />
b. Oxygen Lances: Two oxygen lances per furnace are<br />
hung from a lance positioning and hoisting rig assembly extending