Headquarters Daily report

                               OCTOBER 27, 1994

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                    REPORT             NEGATIVE            NO INPUT
                    ATTACHED           INPUT RECEIVED      RECEIVED
HEADQUARTERS                           X                   
REGION I                               X                   
REGION II                              X                   
REGION III          X                                      
REGION IV                              X                   
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PRIORITY ATTENTION REQUIRED  MORNING REPORT - REGION III  OCTOBER 27, 1994

Licensee/Facility:                     Notification:

Wisconsin Electric Power Co.           MR Number: 3-94-0193
Point Beach 1                          Date: 10/26/94
Two Rivers,Wisconsin                   SRI                                
Dockets: 50-266
PWR/W-2-LP                            

Subject: RTD CALIBRATION PROBLEMS                                        
                                                                         
Reportable Event Number: 27951                         

Discussion:

As a result of conducting analytical reviews associated with steam       
generator tube plugging, Westinghouse recently notified Point Beach that 
their hot leg and cold leg temperature range for OT/deltaT protection did
not cover all possible accident scenarios. Specifically, Point Beach is  
not covered for slow reactivity addition accident that begins between 10 
percent and 90 percent power. Unit 1 is currently at 100 percent power   
and complete protection is in place at that power level. Both units have 
operated with OT/delta T setpoint range between 540 F to 615 F since     
plant start-up. Westinghouse has determined that this band should        
actually be 530 F to 635 F. Currently, Unit 1 is at full power and Unit 2
is in a refueling outage.                                                
                                                                         
Point Beach uses Foxboro instruments with DANA amplifiers with a power   
supply capable of supplying voltages up to 15 volts. The resistance      
temperature detectors (RTD) inputs between 540 F to 615 F currently      
indicate on the Foxboro instruments between 2 and 10 volts. The licensee 
has calibrated the amplifier for use between 0 and 10 volts to correspond
to a temperature range of 521 F to 615 F on Unit 2; however, the accuracy
above 10 volts has not been qualified due to heat restrictions. The      
licensee is currently reviewing three options to resolve this problem: 1)
qualify the amplifier between 0 and 12 volts, 2) rescale all effected    
instrumentation to meet the desired temperature band, and 3) adjust K6 to
make OP/delta T the limiting condition for power operations. The licensee
has already determined there is a linear correlation between voltage and 
temperature between 0 and 12 volts on all eight RDTs for Unit 2 (during  
this refueling outage). This will provide a temperature band between 521 
F and 635 F; therefore, the preferred method is to qualify the amplifier 
for use above 10 volts.                                                  
                                                                         
It should be noted that, although this problem could be generic to other 
Westinghouse plants, it concerns the safety analysis and not actual      
instrument scaling as discussed in Information Notice 91-52,             
"Non-conservative errors in OT/delta T Setpoint caused by improper gain  
settings."                                                               

Regional Action:

Region III and NRR will discuss final resolution and continued operation 
of Unit 1 with the licensee.                                             

Contact:  M. J. FARBER               (708)829-9605