pa1778data.pdf

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