ML13330B441
| ML13330B441 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 12/19/1988 |
| From: | Trammell C Office of Nuclear Reactor Regulation |
| To: | Baskin K Southern California Edison Co |
| References | |
| TAC-67596 NUDOCS 8812290241 | |
| Download: ML13330B441 (4) | |
Text
December 19, 1988 Docket No.:
50-206
-. DISTRIBUTION Docket File NRC -&LPDRs CTrammell (2)
Mr. Kenneth P. Baskin MVirgilio Vice President JLee Southern California Edison Company OGC-White Flint 2244 Walnut Grove Avenue PD5 Plant File Post Office Box 800 EJordan Rosemead, California 91770 BGrimes ACRS (10)
Dear Mr. Baskin:
HConrad KWichman
SUBJECT:
STEAM GENERATOR TUBE INSPECTIONS CYCheng (TAC NO. 67596)
Re:
San Onofre Nuclear Generating Station, Unit No. 1 In reviewing your letters of March 25, April 1 and May 23, 1988, relating to steam generator tube inspections, we have determined that the additional information identified in the enclosure is needed to continue our review. In order to maintain our review schedule, your response is requested within 30 days of your receipt of this letter, or earlier if possible.
We are concerned about the discovery of deficiently installed sleeves which have led to the reported primary-to-secondary leakage. Until this problem is resolved, we will defer action on Amendment Application No. 144 which would permit a reduction in the current Technical Specification requirement for steam generator inspections.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under Pub. L.96-511.
Please contact us if you should have any questions regarding this request.
Sincerely, original signed by Charles M. Trammell, Senior Project Manager Project Directorate V Division of Reactor Projects - III, IV, V and Special Projects
Enclosure:
Request for Additional Information cc: w/enclosure:
See n t page
/ PD5 DRSP/D:PD5 ammell:
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/88 JL /1f /88 OFFICIAL RECORD COPY 8 8112 29'0 2 4 1 881219 PDR ADOCK 05000206 I:PDC
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NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 December 19, 1988 Docket No.:
50-206 Mr. Kenneth P. Baskin Vice President Southern California Edison Company 2244 Walnut Grove Avenue Post Office Box 800 Rosemead, California 91770
Dear Mr. Baskin:
SUBJECT:
STEAM GENERATOR TUBE INSPECTIONS (TAC NO. 67596)
Re:
San Onofre Nuclear Generating Station, Unit No. 1 In reviewing your letters of March 25, April 1 and May 23, 1988, relating to steam generator tube inspections, we have determined that the additional information identified in the enclosure is needed to continue our review. In order to maintain our review schedule, your response is requested within 30 days of your receipt of this letter, or earlier if possible.
We are concerned about the discovery of deficiently installed sleeves which.
have led to the reported primary-to-secondary leakage.
Until this problem is resolved, we will defer action on Amendment Application No. 144 which would permit a reduction in the current Technical Specification requirement for steam generator inspections.
The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under.
Pub. L.96-511.
Please contact us if you should have any questions regarding this request.
Sincerely, Charles M. Trammell, Senior Project Manager Project Directorate V Division of Reactor Projects -
- III, IV, V and Special Projects
Enclosure:
Request for Additional Information cc: w/enclosure:
- . See next page
Mr. Kenneth P. Baskin San Onofre Nuclear Generating Southern California Edison Company Station, Unit No. 1 cc Charles R. Kocher, Assistant Mr. Jack McGurk, Acting Chief General Counsel Radiological Health Branch James Beoletto, Esquire State Department of Health Southern California Edison Company Services Post Office Box 800 714 P Street, Office Bldg. 8 Rosemead, California 91770 Sacramento, California 95814 David R. Pigott Mr. Hans Kaspar, Executive Director Orrick, Herrington & Sutcliffe Marine Review Committee, Inc.
600 Montgomery Street 531 Encinitas Boulevard, Suite 105 San Francisco, California 94111 Encinitas, California 92024 Mr. Robert G. Lacy Manager, Nuclear San Diego Gas & Electric Company P. 0. Box 1831 San Diego, California 92112 Resident Inspector/San Onofre NPS U.S. NRC P. 0. Box 4329 San Clemente, California 92672 Mayor City of San Clemente San Clemente, California 92672 Chairman Board of Supervisors County of San Diego 1600 Pacific Highway Room 335 San Diego, California 92101 Director Energy Facilities Siting Division Energy Resources Conservation &
Development Commission 1516 - 9th Street Sacramento, California 95814 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596
SOUTHERN CALIFORNIA EDISON COMPANY SAN ONOFRE NUCLEAR GENERATING STATION UNIT 1 REQUEST FOR ADDITIONAL INFORMATION
- 1. What is the primary to secondary leak rate history of San Onofre Unit 1?
Why was the problem of leakage caused by deficiently hard rolled sleeves not identified before Cycle 9?
- 2. When is the next steam generator eddy current inspection planned. What is the extent of the planned inspection?
- 3. What is the history of leaking sleeves and plugs? What surveillance and corrective actions are planned?
- 4. Describe the plans and schedule for the determination of the total number of deficient sleeves in the San Onofre Unit 1 steam generators.
- 5. How has the inspection technique been qualified to ensure that all deficient sleeves are identified? Why is a new inspection using the best available current technology not justified, instead of the mere re-exami nation of previous inspection data?