ML13333B357
| ML13333B357 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 03/25/1986 |
| From: | Dudley R Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TASK-2.E.1.2, TASK-TM NUDOCS 8603280277 | |
| Download: ML13333B357 (4) | |
Text
MAR 25 198 Docket No. 50-206 LICENSEE: Southern California Edison Company FACILITY:
San Onofre Nuclear Generating Station, Unit 1 (SONGS-1)
SUBJECT:
MEETING TO DISCUSS MARCH 2, 1986 SUBMITTAL ADDRESSING SELECTED ISSUES RELATED TO THE SONGS-1 NOVEMBER 21, 1985 EVENT On March 5, 1986 the NRC staff met with licensee representatives to discuss (1) the current SONGS-1 design in which the diesel generators must be manually loaded in case of with loss-of-offsite power without a safety injection signal and (2) the root cause of the check valve failures that precipitated the November 21, 1985 event.
During the meeting the licensee explained the SCE position on these issues, which were previously addressed by a March 2, 1986 submittal.
The staff discussed the NRC's previous approval of TMI Action Plan Item II.E.1.2; Part 1 Automatic Initiation of Auxiliary Feedwater, since San Onofre 1 requires operator action in less than eight minutes to manually load the diesel generators to power the electric auxiliary feedwater (AFW) pump in case of a loss-of-offsite power and a single failure of the turbine-driven AFW pumps.
The licensee stated that the past analyses were extremely conservative and that ongoing work would show that manual loading of the diesels is not required for about 30 minutes.
On the check valve issue, the staff asked several questions regarding the sizing of both the old and the new check valves. The staff also expressed concern about flow stream turbulence in the area of the check valves.
Formal questions will be provided by the staff for the licensee in a docketed letter.
An attendance list is provided as Enclosure 1.
Original tignlid bYD George E.. Lear 6603280277 860325 Richard F. Dudley, Project Manager PDR ADOCK 05000206 Project Directorate #1 S
PDR Division of PWR Licensing-A
Enclosure:
As Stated cc w/enclosures:
See Next Page Office:
P AD#1 PD/PAD#1 Surname:
RDudley/tg GLear fby Date:
03/t</86 03/2,86
Mr. Kenneth P. Baskin San Onofre Nuclear Generating Station Southern California Edison Company Unit No. 1 cc Charles R. Kocher, Assistant Joseph 0. Ward, 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. Stephen B. Allman San Diego Gas & Electric Company P. 0. Box 1831 San Diego, California 92112 Resident Inspector/San Onofre NPS c/o 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 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 Walnut Creek, California 94596
ENCLOSURE ATTENDANCE NAME AFFILIATION Richard Dudley NRR/PWR-A/PD#1 George Lear NRR/PWR-A/PD#l Herb Rockhold EG&G/INEL Aran Udy EG&G/INEL Paul Gill EICSB James E. Knight EICSB/PWR-A Goutam Bagchi EB/PWR-A Mike Wharton SCE Bill Flournoy SCE C. Chiu SCE M. Q. Medford SCE R. Ornelas SCE Richard J. Kiessel NRC/IE/EGCB James L. Milhoan NRR-PWR-A/PSB Charles Tinker NRR-PWR-A/PSB J. Shapaker NRR-PWR-A/PSB Patrick Milano IE/VPB L. H. Trottier I&E Vendor Prog. Branch Gary G. Zech I&E Vendor Prog. Branch Ellis W. Merschoff IE/VPB Tony D'Angelo RV Al Chaffee RH Marvin Mendosa RV Bruce Miller Brookhaven Nat'l Lab
Docket Files NRC PDR Local PDR R. Dudley G. Lear OELD E. Jordan B. Grimes J. Partlow ACRS (10)
NRC Participants PD#1 r/f PD#1 s/f