Headquarters Daily report

                         MAY 05, 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 II  MAY  5, 1994

Licensee/Facility:                     Notification:

Tennessee Valley Authority             MR Number: 2-94-0033
Browns Ferry 1 2 3                     Date: 05/05/94
Decatur,Alabama                                                           
Dockets: 50-259,50-260,50-296
BWR/GE-4,BWR/GE-4,BWR/GE-4            

Subject: EARTHQUAKE REPORTED IN NORTHERN ALABAMA                         
                                                                         
Reportable Event Number: N/A

Discussion:

On May 4, 1994, at approximately 8:40 a.m., CDT, the Shift Supervisor at 
Browns Ferry received a call from the NRC Operations Officer informing   
TVA that an earthquake had occurred at 4:12 a.m., CDT, some 31 miles     
southwest of the plant.  The earthquake measured 3.0 on the Richter scale
and was centered at Latitude 34.2 N, Longitude 87.2 W.  The licensee did 
not receive any indication of seismic activity in the control room at the
time of the event (i.e., no alarms were received, and no one reported    
"feeling" the earthquake). Subsequent to receiving this information,     
plant instrumentation personnel checked the triaxial time history        
accelerographs (TTHAs, the plant's most sensitive seismic                
instrumentation, which alarms at 0.009 G) for indication of any motion at
the station.  None of the three TTHAs were in alarm, indicating no       
detection of seismic activity.  These instruments are located in the     
Unit 1 reactor building base slab, the Unit 1 reactor building floor     
slab, and the diesel generator building base slab.                       

Regional Action:

The Resident Inspectors reviewed licensee activities.                    

Contact:  Scott Sparks               (404)331-5619
PRIORITY ATTENTION REQUIRED  MORNING REPORT - REGION IV  MAY  5, 1994

Licensee/Facility:                     Notification:

Entergy Operations Inc.                MR Number: 4-94-0042
Waterford 3                            Date: 05/04/94
Killona,Louisiana                      HOO Telecon                        
Dockets: 50-382
PWR/CE                                

Subject: VENTILATION SYSTEM OUTSIDE DESIGN BASIS                         
                                                                         
Reportable Event Number: 27206                         

Discussion:

At 8:10 p.m. on May 3, 1994, the licensee implemented their              
nonconformance/indeterminate analysis process when preliminary           
investigation results concluded that engineered safety features (ESF)    
ventilation systems may not operate properly following a loss of power   
condition.  The potential ventilation systems involved include the shield
building ventilation systems, the controlled ventilation area systems,   
the control room emergency filtration systems, and the fuel handling     
building ventilation systems.                                            
                                                                         
This condition was initially discovered during the performance of a loss 
of power test conducted during the recently completed refueling outage   
(Refuel 6).  During this test, which was conducted to test the ability of
Emergency Diesel Generator B to provide backup power and was successfully
completed, Train B of shield building ventilation and controlled         
ventilation area systems tripped soon after power was restored.  As the  
result of this occurrence, the licensee conducted a review of these      
systems to determine the reason for the trips.                           
                                                                         
The licensee's review of the shield building ventilation system indicates
that a time delay relay in the heater control circuits was timing out    
before the heater temperature controller could gain control of the       
heaters when power was restored following a loss of power condition.  The
licensee had modified the heater control circuit following the refueling 
outage completed in September 1992 (Refuel 5) and, therefore, had not    
subjected the modified circuitry to the loss of power test that was      
conducted during that outage.                                            
                                                                         
While the licensee has not yet determined the cause of tripping for the  
controlled ventilation area system or whether this condition exists for  
the other ventilation systems, there is the potential that these systems 
could also be affected since this modification was installed in all of   
the ESF ventilation systems.  Since there is no evidence at this time    
that the other ventilation systems are affected, the licensee considers  
these systems to be operable.  As a conservative measure, however, the   
licensee has established administrative controls in the form of a        
dedicated operator to manually reset the heater circuits if an SIAS with 
a concurrent loss of power were to occur.                                

Regional Action:

Resident inspector followup.                                             

Contact:  T. F. Stetka               (817)860-8247