ML20155C390
| ML20155C390 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 06/02/1988 |
| From: | Morgan H SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8806140186 | |
| Download: ML20155C390 (2) | |
Text
_ _ _ _ _
Southem California Edison Company SAN ONOFRE NUCLEAR GENERATING STATION P. O BOX 128 SAN CLEMENTE. CALIFORNIA 92672 STAflON WANAGER (74 SSG 4 I
('
June 2, 1988 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C.
205555
Subject:
Docket No. 50-362 Special Report Inservice Inspection of Steam Generator Tubes San Onofre Nuclear Generating Station, Unit 3
Reference:
Letter, M. O. Medford (SCE) to Mr. G. W. Knighton (USNRC) dated April 5,1985 Pursuant to Surveillance Requirement 4.4.4.5(a) of Appendix A Technical Specifications to Facility Operating License NPF-15, this report is being submitted to the Commission following completion of inservice inspection of steam generator tubes at San Onofre Unit 3.
Eddy current inspection of the steam generator tubing was completed on May 25, 1988. A total of 2151 tubes (11.6% of.the tubes in service) in two steam generators were inspected full length and 177 tubes were removed from service by mechanical plugging.
In Steam Generator E-088, 959 tubes were inspected.
Two tubes found to be defective due to the wear mechanism previously described in the reference were plugged. Therefore, as provided for in Technical Specification 4.4.4.2, a C-2 program expansion was performed.
Seventy-five tubes were preventively plugged due to the wear mechanism previously described in the reference.
In Steam Generator E-089, 1192 tubes were inspected.
Four tubes found to be defective due to the wear mechanism previously described in the reference were plugged. Therefore, as provided for in Technical Specification 4.4.4.2, a C-2 program expansion was performed.
Ninety-six tubes were preventively plugged due to the wear mechanism previously described in the reference.
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Document Control Desk -
l As required by. Surveillance Requirement 4.4.4.5(b), complete results of the recently completed inservice inspection will be submitted to the Commission by May 24, 1989.
j If you require any additional information, please so advise.
Sincerely, b
cc:
J. B. Martin (Regional Administrator, USNRC Region V)
F. R. Huey (USNRC Senior Resident Inspector, Units 1, 2, and 3)
H. Rood (Project Manager, SONGS 2/3, USNRC, NRR)
Institute of Nuclear Power Operations (INP0) l