ML20116B335

Special Rept:On 960627,SG Base Support Strong Motion Accelerometer 2XT8020B Was Determined to Be Inoperable. Cause Will Not Be Known Until Local Insp Completed

ML20116B335
Person / Time
Site:	San Onofre
Issue date:	07/23/1996
From:	Marsh W SOUTHERN CALIFORNIA EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9607290217
Download: ML20116B335 (1)

Text

{{#Wiki_filter:; SOUUll RN 0411iORNI A Ft 7 -e' EDISON l An I:Ut50% l%TI R \ Allo \Al, Company July 23, 1996 j l l i U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C. 20555

Subject:

Docket Nos. 50-361 and 50-362.  ; Special Report San Onofre Nuclear Generating Station- Units 2 and 3 This. report is being submitted in acccrdance wit' lechnical Specification 3.3.3.3 for San Onofre Units 2 and o (Facility Operating Lic nses NPF-10 and NPF-15, respectively). These specifications require a Special Report within 10 days after the I seismic monitoring instrumentation has been inoperable for more than 30 days. On June 27, 1996, with both units in Mode 1 at 100% power, during routine monthly surveillance testing, steam generator base support strong motion accelerometer 2XT8020B was determined to be ' inoperable. The cause of the inoperability will not be known until local inspection is completed. 2XT8020B is inaccessible during Unit 2 power operation and will be inspected and repaired during the next Unit 2 outage of sufficient duration, subject to replacement parts availability. The other four strong motion accelerometers of the SMA-3 recording unit remain operable. . If you require any additional information, please let me know. Sincerely, h i WALTER C. MARSH MANAGER OF NUCLEAR REGULATORY AFFAIRS cc: L. J. Callan, Regional Administrator, NRC Region IV J. E. Dyer, Director, Division of Reactor Projects, NRC , Region IV K. E. Perkins, Jr., Director, Walnut Creek Field Office, NRC Region IV J. A. Sloan, Senior Resident Inspector, Units 2 and 3  : M. B. Fields, NRC Project Manager, San Onofre Units 2 & 3 anname 9607290217 960723 DR ADOCK_05000ggi -{g;19, s/0/ P. O.l u l28 San Clemente, CA 92674-0128}}