Headquarters Daily Report

                         MARCH 25, 1996

***************************************************************************
                    REPORT             NEGATIVE            NO INPUT
                    ATTACHED           INPUT RECEIVED      RECEIVED

HEADQUARTERS                           û                   
REGION I                               û                   
REGION II           û                                      
REGION III          û                                      
REGION IV                              û                   
PRIORITY ATTENTION REQUIRED  MORNING REPORT - REGION II  MARCH 25, 1996

Licensee/Facility:                     Notification:

Virginia Power Co.                     MR Number: 2-96-0023
North Anna 1                           Date: 03/25/96
Richmond,Virginia                                                         
Dockets: 50-338
PWR/W-3-LP                            

Subject: UNIT 1 SHUTDOWN TO REPAIR THE B MAIN STEAM TRIP VALVE           

Discussion:

At 7:28 p.m. on March 24, Unit 1 was taken offline due to B main steam   
trip valve vibrations.  This valve has air cylinders which keep the      
swing-type check valve disc rotated out of the steam flow.  The linkage  
which connects the air cylinders to the valve shaft was out of adjustment
such that the pistons in the air cylinders would go full stroke before   
the valve disc was in the full open position.  Valve vibration resulted  
from the valve disc floating in the steam flow.  The linkage was         
re-adjusted and the unit was returned to service at 5:15 a.m. on         
March 25.                                                                

Regional Action:

Routine followup by Residents.                                           

Contact:  G.BELISLE                  (404)331-4196
_
REGION III  MORNING REPORT     PAGE  2          MARCH 25, 1996

Licensee/Facility:                     Notification:

Iowa Electric Light & Power Co.        MR Number: 3-96-0031
Duane Arnold 1                         Date: 03/25/96
Palo,Iowa                              RI VIA PC                          
Dockets: 50-331
BWR/GE-4                              

Subject: DAEC SCRAM SOLENOID PILOT VALVE FAILURES                        

Discussion:

On March 24, 1996, the licensee completed special scram time testing of  
all (89) control rods. The testing was performed in response to generic  
BWR industry concerns with the performance of the scram solenoid pilot   
valve (SSPV) Viton diaphragms. The final results indicated that 86 of 89 
control rods failed to meet the specification for rod movement from      
position 48 to position 46. Duane Arnold Technical Specifications (TS)   
require that the average scram insertion time of all operable control    
rods shall be no greater than 0.35 seconds from position 48 to position  
46. After each individual control rod test the licensee performed a like 
for like replacement of the diaphragms on the outboard SSPV for all the  
control rods that exceeded 0.35 seconds from position 48 to position 46. 
The as-found times for the control rods were consistently in the 0.370 to
.420 second range. Duane Arnold TS also require that the maximum scram   
insertion time to rod position 04 of any operable control rod should not 
exceed 7.00 seconds. All of the rods tested were in the 2.5 to 2.6-second
range for this parameter. After replacement of each of the SSPV          
diaphragms, the control rods were re-scram time tested. All but two of   
the controls rods were found to meet the 0.35 second time (the average   
for all 89 control rods met the TS requirement to be no greater then 0.35
seconds). The licensee plans followup testing at 60 and 120-day intervals
to track behavior of the SSPVs. All the testing data, along with the     
failed Viton diaphragms, will be forwarded to General Electric and the   
owners' group for analysis.                                              

Regional Action:

Routine follow-up of residents.                                          

Contact:  ROGER LANKSBURY            (708)829-9631
_