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The U.S. state of NewYork has 5 nuclear reactors, and 0 deferred construction power plants.
Scroll down to see more information about each plant.
Nine Mile Point Unit 1
GENERAL INFORMATION
GENERAL INFORMATION
Plant Name: Nine Mile Point Unit 1
Docket No.: 50-220
Owner/Operator: Niagara Mohawk Power Corporation
Other Plants On Site: Nine Mile Point Unit 2 (Fitzpatrick, a GE BWR-4 operated by the
Power Authority of the State of NewYork is located next to the Nine
Mile Point Site)
Site Location/Address: 7 Mile Northeast of the city of Oswego
Reactor Type: BWR 2
Facility Licensed Thermal Power Limit: 1850 MWt
Main Turbine Generator Rated Output: 615 MWe
Ultimate Heat Sink -
Supply to Main Turbine Condenser: Lake Ontario
Ultimate Heat Sink -
Supply to ECCS Service Water System: Lake Ontario
NSSS Vendor: General Electric
Turbine Gen: General Electric
Arch. Engr.: Niagara Mohawk Power Corporation
Constructor: Stone & Webster
Date of Operating License Issuance: 8/22/69 for the Provisional Operating License and 12/26/74 for the
Operating License Operating License.
Date of Commercial Operation: 12/01/69
PLANT SUMMARY
Primary Containment
Containment Type: Mark I
Maximum Internal Design Pressure: 62 psig
Torus/Pressure Suppression Chamber
Min. TS Water Volume: 3.5 ft
Max. TS Water Volume: 4.25 ft
Fuel
No. of Fuel Assemblies: 532
No. of Rods per Assembly: 60 (Number of fuel rods depends on the fuel being used 8x8=60, 8x8R
& P8x8R=62, & GE8x8EB=60)
Reactor Core Isolation Cooling
System (RCIC) Not Applicable for this Reactor
Pump TS Flow Rate and related
Discharge Head range: N/A
RCIC Uses RHR Heat Exchanger for
Steam Condensation: N/A
Isolation Condenser (IC)
Unit Has Isolation Condenser: Yes
High Pressure Coolant Injection System (HPCI)/Feedwater Coolant Injection (FWCI)
Pump Tech Flow Rate and related Discharge
Head range: N/A (What licensee call HPCI is actually the Feedwater Coolant
Injection System (FWCI). It is not an engineered safeguards system
and it is not considered in any loss of coolant accident analysis. HPCI
system utilizes the two condensate storage tanks, the main condenser
hotwell, two condensate pumps, condensate demineralizers, two
feedwater booster pumps, feedwater heaters, & two motor-driven
feedwater pumps. The system can deliver 6840 gpm into the reactor
vessel at reactor system pressure (using two trains). Condensate and
feedwater booster pumps are capable of supplying 3420 gpm at
approximately reactor pressure up to 270 psig.
High Pressure Core Spray (HPCS)
Not Applicable for this Reactor Type
Low Pressure Coolant Injection (LPCI)/RHR
Not Applicable for this Reactor
No. of Pumps: N/A
Pump TS Flow Rate and related
Discharge Head: N/A
Pump Shutoff Head: N/A
Containment Spray
No. of Pumps: 4 (Two separate and independent containment spray systems (a
primary loop and a secondary loop) are provided to remove heat,
reduce pressure, and restore the pressure suppression chamber
temperature following a LOCA. Each of the two independent full-
capacity systems has a flow capacity of 6000 gpm and a heat removal
capability of 12x107 BTU/hr with spray water temperature reduction
from 140øF to 100øF as it passes through the heat exchangers. Each
independent spray system is provided with two parallel supply loops
each consisting of a pump, strainer, heat exchanger, & valves. Each
heat exchanger is independently supplied with raw cooling water
directly from the main intake tunnel. The containment spray system is
used in conjunction with the core spray system. In the heat removal
process of core spray, core spray water is converted to steam which is
then released to the containment. The containment sprays condense the
steam in the drywell and remove heat from the containment vessels
through heat exchangers.
Pump Flow Rate and related
Discharge Head: 3600 gpm @ 87.7 psid for the primary loop
3600 gpm @ 89 psid for the secondary loop
Pump Shutoff Head: 270 psig
Core Spray
No. of Pumps: 4 (The Core spray system has two loops. Each loop has 2 core spray
pumps and 2 core spray booster pumps. The Core Spray Booster
pumps are referred to as the Core Spray Topping Pumps in the FSAR)
Pump TS Flow Rate and related
Discharge Head:
Pump Shutoff Head: ~ 340 psig
Low Pressure Core Spray (LPCS)
Not applicable for this Reactor Type
Feedwater System
Condensate
No. of Pumps: 3
Pump Shutoff Head:
Condensate Booster
No. of Pumps: 3
Pump Shutoff Head:
Reactor Feed
No. of Pumps: 2 (Motor Driven)
1 (Steam Driven)
Startup Feedwater N/A
Standby Liquid Control Tank (Borated Water)
Minimum TS Volume: 1185 gals
Water Sources and Design Capacities:
Name: CONDENSATE STORAGE TANK ------ 200,000 gal
Name: SUPPRESSION POOL
Class 1E Emergency Power
No. of Class-1E Diesel Generators (EDG)
on site: 5
Shared per Plant Site: 0
Dedicated for this Unit: 2
Diesel Manufacturers: General Motors
Other Sources of On
Site Emergency Power: None
UNIQUE PLANT FEATURES
 
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