pa1778data.pdf

More documents

Recommendations

Info

$lit- \NBS)NE/$

U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 235) concrete foundation, the corrugated metal building is laid out on a north-south axis. Its gable roof is supported by Pratt trusses. The building is divided into two rooms. The southern room contains a small Panner Bros, stamping press in the western corner of the room. Inside of the northern room are four desks and three lockers. Construction dates: ca. 1942. K. Waste Water Treatment System for the Primary and Bar Mills: The waste water treatment system for the primary and 22" bar mill at the Duquesne Works, located just south of the heat treatment building, treats all contact water used in the respective mills and recycles it back into their systems. The following integrates the structures and equipment making up the system with a description of their function. 1. Clarifier and Sludge Pumps: The 100* diameter x 13' high Dorr-Oliver clarifier is located just south of the system's cooling water tower and is made out of steel construction. It has a 15* diameter centerwell, a 5 hp motor-powered rake and oil skimmer, and a 2'-6" wide x 3'-0" deep launderer which encircles its circumference. Two 7.5 hp motored-powered Wemco-Envirotech sludge pumps with a rating of 100 gpm each are located in a corrugated metal lean-to that is adjacent to the southern side of the clarifier. Waste water from the primary and 22" bar mill lift stations entered the centerwell at the bottom of the clarifier and rose slowly, thus allowing about 50 percent of its suspended solids to settle at its bottom. In order to enhance the coagulation of suspended solids both alum and polymers were added to the waste water as it entered the centerwell. The clarifier's skimmer removed floating oil from the waste water and stored it in a 2,200-gallon scum tank adjacent to the clarifier. The partially cleaned waste water subsequently overflowed into the clarifier 1 s launderer and was directed by gravity into a filter feed tank. The rake mechanism directed the settled sludge to the sludge pumps where it was pumped to the thickener. Installation date: 1981. 2. Filter Feed Tank, Process Pump Building, Process Building, Pressure Filters, and Spent Backwash Tank: Located adjacent to the clarifier on its southeastern side, the filter feed tank is an 25 f diameter x 12' high, circular steel tank with a sloped bottom. The partially cleaned waste water from the clarifier passes through the filter feed tank into the suction, which is located in a small well at the bottom of the tank, for three filter feed pumps. The 5200 gpm capacity Wilson-Snyder filter feed pumps are located in the process pump building.
U.S. STEEL DUQUESNE WORKS HAER No. PA-115 (Page 236) The one story, 18"-6" wide x 58'-6" long concrete block process pump building is laid out on a north-south axis and located just east of the filter feed tanks. Built from a concrete foundation by the American Bridge Company, the building has a flat roof. The filter feed pumps, which are located in the northern end of the building, deliver the partially cleaned waste water to one of six pressure filters located in the process building. The two story, 4 6' wide x 177' long, corrugated metal, process building is located just east of the process pump building. Built on a concrete foundation by the American Bridge Company, the steel-framed building has two ventilation hoods protruding out of its roof. The building 1 s gable roof is supported by Fink trusses. The 12' diameter x 25 f high pressure filters are located in two rows of three filters each in the mid- western end of the building. They protrude through the second floor of the building and consist of three layers of filtration media composed (from top to bottom) of anthracite coal, sand, and gravel. The partially cleaned waste water was pumped to the top of the filters where it flowed downward before being directed to the cooling tower. The filters were periodically cleaned by backwashing or reversing the flow of the water through them and by blowing air from two blowers located in the first floor of the process building into the filters at the same time in order to enhance the scouring action. Spent backwash water was subseguently directed by gravity to the spent backwash tank. The spent backwash tank is located next to, and just south of the filter feed tank. Constructed by the Chicago Bridge and Iron Company, the 25' diameter x 18' high, open-top circular steel tank is equipped with a turbine mixer in order to keep the solids within the backwash water suspended. Two 150 gpm capacity Wilson-Snyder centrifugal spent backwash water pumps, located in the southern end of the process pump house, pumped the backwash to the thickener. Installation date: 1981 3. Cooling Towerf Cold Well, and Cold Well Pumps: The approximately 30• long x 10' wide x 15' high Bac-Pritchard cooling tower is laid out on an east-west axis and located just north of the clarifier. It is a mechanical draft, wood (Douglas fir) filled tower with three individual cells. The tower works by accepting the normal discharge from the pressure filters through distribution nozzles at the top of each cell. The water flows downward through the fill material to a 300,000 gallon concrete cold well basin located beneath the tower. Draft air was drawn through the tower by fans located at the top of each cell. The cooling tower reduced the water temperature from 105
Page 1 and 2:
U.S. STEEL DUGUESNE WORKS HAER Wo.
Page 3 and 4:
U.S. STEEL DUQUESNE WORKS HAER No.
Page 5 and 6:
U.S. STEEL DUQUESNE WORKS HAER NO.
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
# U.S. STEEL DUQUESNE WORKS HAER NO
Page 15 and 16:
Page 17 and 18:
• U.S. STEEL DUQUESNE WORKS HAER
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
FART THREE: 1946-1988 U.S. STEEL DU
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
seeks to develop it into an industr
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
• northern wall and 27'-0" from t
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Installation Date: 1955. U.S. STEEL
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
cooling tower has a capacity of 190
Page 91 and 92:
* * tunnel beneath the clarifier. I
Page 93 and 94:
* U.S. STEEL DUQUESNE WORKS HAER No
Page 95 and 96:
Page 97 and 98:
# U.S. STEEL DUQUESNE WORKS HAER No
Page 99 and 100:
* U.S. STEEL DUQUESNE WORKS HAER No
Page 101 and 102:
# » U.S. STEEL DUQUESNE WORKS HAER
Page 103 and 104:
• # # U.S. STEEL DUQUESNE WORKS H
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Historic Name Present Name: Locatio
Page 115 and 116:
dumped. Construction Date: 1957. U.
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
B. Hoist House,: U.S. STEEL DUQUESN
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Historic Name: Present Name: Locati
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
STEELMAKING PLANT - HEAT TREATMENT
Page 185 and 186: U.S. STEEL DUQUESNE WORKS HAER No.
Page 187 and 188: and is set into the floor of the bu
Page 191 and 192: STEELMAKING PLANT - BASIC OXYGEN U.
Page 199 and 200: • U.S. STEEL DUQUESNE WORKS HAER
Page 205 and 206: construction carbon and alloy steel
Page 209 and 210: U.S. STEEL DUQUESNE WORKS HAER NO.
Page 231 and 232: U.S. STEEL DUQUESNE WORKS HAER NO.
Page 235: U.S. STEEL DUQUESNE WORKS HAER NO.
Page 243 and 244: # U.S. STEEL DUQUESNE WORKS HAER No
Page 247 and 248: A U.S. STEEL DUQUESNE WORKS W HAER
Page 249 and 250: * U.S. STEEL DUQUESNE WORKS HAER No
Page 251 and 252: A U.S. STEEL DUQUESNE WORKS W HAER
Page 255 and 256: • • U.S. STEEL DUQUESNE WORKS H
show all

pa1778data.pdf

Create successful ePaper yourself

Delete template?

Save as template?