OG&E Semiole Plant

Seminole Plant Facts:

A. 1977 Maximum Output-1625MW -1,625,000 KW -1,625,000,000 Watts -this is enough to light 16,250,000 100 Watt light bulbs.

B. Steam-Turbine-Genertor

1. Manufacturer
   • No. 1 and No. 3 General Electric Co.
   • No. 2 Westinghouse Corp.
2. Commercial Operation:
   • No. 1 -1971
   • No. 2 -1973
   • No. 3 -1975
3. &127;Maximum Capacity:
   • #1 - 540 MW Gross 530 Net
   • #2 - 519 MW Gross1977 507 Net on the average now due to iron oxide fouling Air Preheater baskets - resulting in high furnance pressure.
4. Installed Costs:
   • #1- $51 million
   • #2- $38 million
   • #3- $68 million
   • #1 Gas Turbine - $1.5 million
5. Delivers power to system grid.
   • #1 to 138,000 volt distribution system.
   • #2 & #3 to 345,000 volt distribution system.

• #1 One for each of our Turbine- Generators.
• #2 Primary fuel natural gas Standby Fuel Oil.
  • Fuel gas use per boiler at full load4.9 million cu. ft. per hour
  • Fuel costs for plant during high load season is approximately $13 to $15 million
• #3Each boiler rated at 3.5 million lbs. steam/hour

• 1. Purpose- Peaking power and black start capability
  • Black Start- To allow us to start our large steam units with no outside source of electricity.
• 2. Rated 19 MW maxium
• 3. Fuel- Natural gas or fuel oil.

• 1. Purpose- Cooling water for our 3 units condensers.
  • Total flow through 3 condensers- 1,000,000 GMP(gals./min.)
• 2. Lake also open to public as a recreationl facility; i.e., boating, skiing, swimming, and fishing.

• 1. We have 62 men and women working here. All are dedicated to the operation and maintenance of Seminole Station so as to furnish your and your neighbors with safe, reliable electricity. All live with 35 miles radius of our plant.

Seminole Generating Station, Units 1, 2, 3 and Gas Turbine

• Location, near Konawa, Oklahoma
• Oklahoma Gas and Electric Company

Power Station

• Units 1, 2, 3,. . . . . . . . . . . . . . .Approx. (Net) 505,000 Kilowatts each
• Gas Turbine . . . . . . . . . . . . . . . Approx. 19,000 Kilawatts (Net)
• Operation Data . . . . . . . . . . . .1971, 1973, and 1975, 1971 for Gas turbine peaking unit

Fueling

• Natural Gas, #2 oil and #6 oil

Plant Cooling

• Cooling Lake . . . . . . . . . . . . . . . .1350 surface Acres
• Lake Makeup . . . . . . . . . . . . . . . .South Canadian River
• Cooling Water Cirxulates through each unit at a rate of . . . . . . .330,000 gallons p/m

Equipment

• Steam Generator. . . . . . . Babcock & Wilcox
• Turbine Generators. . . . .330,000 gallons per minute

Construction Data

• Time required to complete plant. . . . . . Approx. 7 years
• Number of employees during construction. . . Approx.450
• Number of permanent employees . . . . .Approx. 100
• Approx. total cost of project . . . . . . . $160,000,000
• Lake Elevation . . . . . . . . .924.0 ft.
• Canal Depth. . . . . . . . . . . .24.0 ft.
• Discharge . . . . . . . . . . . . .7ft. to 17 ft.