UPDATE 1-Constellation NY Nine Mile Point units at reduced rates

Tue Nov 13, 2012 3:48pm EST

Nov 13 (Reuters) - Both reactors at Constellation Energy
Nuclear Group LLC's Nine Mile Point nuclear power plant in New
York were operating at reduced rates for different reasons on
Tuesday, a spokeswoman said. 
    Unit 1, rated at 630 megawatts, was reduced to 86 percent 
after operators identified a problem with the turbine
lubrication oil system. Workers were still investigating the
issue Tuesday afternoon, the spokeswoman said.   
    Unit 1 had reached 100 percent output on Monday after an
unplanned outage that began Nov. 3.  
    Meanwhile, Nine Mile Point Unit 2, rated at 1,143-MW, at was
operating at about 89 percent on Tuesday afternoon as operators
increased its output, the Constellation Energy spokeswoman said.
    Constellation Energy had planned to shut the unit Nov. 10 to
repair a valve in the main steam tunnel, the spokeswoman said
earlier. 
    However, on Nov. 11, when the unit was at about 20 percent
of capacity, the New York grid operator asked Constellation to
keep Unit 2 online due to transmission system issues so
Constellation decided to delay the outage and operators began
increasing its output. 
    Unit 2 is in stable condition, the spokeswoman said. 
    She would not say if the grid issues were related to a
transformer fire that occurred Sunday at the nearby Entergy
FitzPatrick nuclear plant. 
    She also would not say when the valve repair will be
rescheduled, but did say the work can only be performed when the
unit is offline.  
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PLANT BACKGROUND/TIMELINE
STATE:      New York               
COUNTY:     Oswego               
TOWN:       Scriba, 160 miles (257 km) west of Albany, the      
                 state capital               
OPERATOR:   Constellation Energy Nuclear Group (CENG) -a joint
venture between Chicago's Exelon (50.01 percent) and
France's EDF     
            Group (49.99 percent)     
OWNER(S):   -Unit 1: CENG (100 percent)     
            -Unit 2: CENG (82 percent), Long Island     
            Power Authority (18 percent)               
CAPACITY:   1,773 MW                
UNIT(S):    -Unit 1: 630-MW General Electric boiling water      
            reactor               
            -Unit 2: 1,143-MW General Electric boiling water    
            reactor               
FUEL:       Nuclear               
DISPATCH:   Baseload               
COST:       -Unit 1: $804.7 million (2007 USD)                
            -Unit 2: $8.529 billion (2007 USD)               
TIMELINE:               
1970:       Unit 1 comes online               
1988:       Unit 2 comes online               
2006:       NRC approves 20-year licenses extension             
 
2029:       Unit 1 operating licenses expires               
2046:       Unit 2 operating licenses expires
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