Headquarters Daily report

                                  JUNE 22, 1995

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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 IV  JUNE 22, 1995

Licensee/Facility:                     Notification:

Texas Utilities Electric Co.           MR Number: 4-95-0087
Comanche Peak 2                        Date: 06/22/95
Glen Rose,Texas                        Resident Inspector Via Telephone   
Dockets: 50-446
PWR/W-4-LP                            

Subject: TURBINE DRIVEN AUXILIARY FEEDWATER PUMP OVERSPEED TRIP          
                                                                         
Reportable Event Number: N/A

Discussion:

While starting the Unit 2 turbine driven auxiliary feedwater (TDAFW) pump
on June 21, 1995, the turbine tripped on overspeed.  The system engineer 
was monitoring the turbine startup and reported that the governor did not
move during the start.  The pump turbine reportedly emitted a large      
amount of water out the stack vent on top of the safeguards building.    
Additionally, the sentinel valve at the top the turbine casing emitted   
water continuously during the start.  The turbine tripped on overspeed   
approximately 13 seconds after the start and reached approximately 5000  
rpm.  During the turbine warmup being performed just prior to the start, 
the governor valve reportedly exhibited a jerky motion.  The pump was    
being run to further investigate unusual noises detected four days       
earlier.                                                                 
                                                                         
On June 16, the TDAFW pump was started for a routine surveillance test.  
During the test, operators noted a change in the pump flow noise and     
described the noise as "indications of cavitation."  The pump was        
immediately shut down and the system engineer contacted.  Later that     
evening, the pump was restarted to monitor for indications of cavitation;
however, none were noted and the pump was determined to be operable.  The
licensee decided to conduct more extensive tests, including tests to     
determine the pump head curves, and began the tests on June 21.          
                                                                         
The licensee plans to investigate the possibility of governor valve stem 
binding.  The licensee reported that the valve stem is the older, gas    
nitrided, 410 stainless variety.  The licensee planned to disassemble the
valve and possibly replace the valve stem with an inconel stem if one can
be obtained or manufactured.  Additionally, the licensee is investigating
the cause of the excessive amount of water from both the stack vent and  
the sentinel valve.  Finally, the licensee was bringing vendor           
representatives from both Dresser and Woodward to assist in the root     
cause analysis.                                                          

Regional Action:

Resident and regional inspectors will monitor the licensee's activities  
including turbine repairs and retests.                                   

Contact:  Harry Freeman              (817)897-1500