Headquarters Daily report

                         AUGUST 12, 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 I  AUGUST 12, 1994

Licensee/Facility:                     Notification:

Connecticut Yankee Atomic Power Co.    MR Number: 1-94-0091
Haddam Neck 1                          Date: 08/12/94
Hartford,Connecticut                   SRI E-MAIL                         
Dockets: 50-213
PWR/W-4-LP                            

Subject: LOW TEMPERATURE OVER PRESSURE RELIEF VALVE ACTUATION            
                                                                         
Reportable Event Number: N/A

Discussion:

On August 10 at approximately 1:20 p.m., with the unit in a cold shutdown
condition, the unit experienced a pressure transient on the reactor      
coolant system. At the time the licensee was performing a surveillance to
measure operational leakage in portions of the charging and residual heat
removal system. The surveillance procedure was required pursuant to      
technical specification 4.4.6.2.1.g. As required by the surveillance,    
operators started the "A" charging pump. An unwanted leak path not       
identified in the procedure, existed from the charging system to the     
reactor coolant pump seal header. The subsequent mass addition into a    
water solid reactor coolant system (temperature 120 F, pressure 300 psig)
resulted in an apparent opening of the low temperature overpressure      
(LTOP) relief valves. Maximum recorded reactor coolant system pressure   
was 390 psig. The LTOP relief valves are set at 380 psig to prevent      
exceeding the 450 psig limit as read off a curve in the technical        
specifications. The mass addition was terminated by the operator placing 
the charging pump in "trip pull out." The charging pump was in operation 
for approximately eighteen seconds. Preliminary licensee investigation   
concluded that the surveillance procedure was inadequate in that it      
failed to address complete isolation of the charging system from the     
reactor coolant system.  The licensee was in the process of correcting   
the procedure, and reviewing past surveillances to understand the basis  
of the procedural actions. A special report is required pursuant to      
technical specification 3.4.9.3.c.                                       

Regional Action:

Investigating the licensee's root cause analysis of this event and basis 
for performing the surveillance in water-solid condition.                

Contact:  William Raymond            (203)267-2571
          Larry Nicholson            (610)337-5128
PRIORITY ATTENTION REQUIRED  MORNING REPORT - REGION II  AUGUST 12, 1994

Licensee/Facility:                     Notification:

Duke Power Co.                         MR Number: 2-94-0075
Oconee 3                               Date: 08/12/94
Seneca,South Carolina                                                     
Dockets: 50-287
PWR/B&W-L-LP                          

Subject: OCONEE UNIT 3 TRIP                                              
                                                                         
Reportable Event Number: N/A

Discussion:

At 4:46 a.m., on August 12, 1994, Oconee Unit 3 tripped from 42% power   
due to the loss of its operating feedwater pump (1B). The unit was being 
returned to power after a trip that occurred on August 10, 1994, which   
was caused by a loss of power to the Integrated Control System (See      
PNO-II-94-042). The unit is currently in Hot Shutdown and the cause of   
the loss of the feedwater pump is being investigated.                    

Regional Action:

The NRC resident inspectors responded on site to the trip and continue to
closely monitor the recovery activities.                                 

Contact:  R. E. Carroll              (404)331-5543