Headquarters Daily Report

                         NOVEMBER 04, 1997

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                    REPORT             NEGATIVE            NO INPUT
                    ATTACHED           INPUT RECEIVED      RECEIVED

HEADQUARTERS                           û                   
REGION I            û                                      
REGION II                              û                   
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PRIORITY ATTENTION REQUIRED  MORNING REPORT - REGION I  NOV. 04, 1997

Licensee/Facility:                     Notification:

Pennsylvania Power & Light Co.         MR Number: 1-97-0056
Susquehanna 1 2                        Date: 11/01/97
Allentown,Pennsylvania                                                    
Dockets: 50-387,50-388
BWR/GE-4,BWR/GE-4                     

Subject: MINIMUM CRITICAL POWER RATION LIMIT FOR SINGLE LOOP OPERATIONS  

Discussion:

On Friday, October 31, 1997, the licensee discovered an error in the     
analysis used to establish the minimum critical power ratio (MCPR) limit 
for single recirculation loop operation.  The analysis, performed by     
Siemens Power Corporation, established the MCPR limit based on a         
postulated seizure of the operating reactor recirculation pump.  The     
Siemens evaluation assumed the limiting fuel node would be located in the
upper region of the core and, therefore, the lower region was not        
evaluated.  The licensee's analysis has identified a potentially more    
limiting node in the lower region of the core.                           
                                                                         
For Susquehanna, administrative controls and Technical Specifications are
in place to prevent operation with a single recirculation loop in        
service, above 25 percent power, until new MCPR limits are established.  
Siemens is evaluating this finding through their Non Conformance Report  
process to determine if reports to other utilities or the NRC are        
required by 10 CFR Part 21.                                              

Contact:  B. McDermott               (717)542-2134
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