ML13303A900
| ML13303A900 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 07/13/1988 |
| From: | Hickman D Office of Nuclear Reactor Regulation |
| To: | Baskin K, Cotton G San Diego Gas & Electric Co, Southern California Edison Co |
| References | |
| TAC-68425, TAC-68426 NUDOCS 8807220371 | |
| Download: ML13303A900 (4) | |
Text
July 13, 1988 Docket Nos.:
50-361 and 50-362 Mr. Kenneth P. Baskin Mr. Gary D. Cotton Vice President Senior Vice President Southern California Edison Company Engineering and Operations 2244 Walnut Grove Avenue San Diego Gas & Electric Company Post Office Box 800 101 Ash Street Rosemead, California 91770 Post Office Box 1831 San Diego, California 92112 Gentlemen:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION, SAN ONOFRE, UNITS 2 & 3 (TAC NOS. 68425 AND 68426)
During the course of our review of your proposed change to Technical Specification 3/4.1.3.4 "CEA Drop Time," we find that additional information is needed. The requested information is described in the Enclosure. Please forward this information as soon as possible so that we may complete our review.
If you have any questions regarding this request, please contact me.
Sincerely, original signed by Donald E. Hickman, Project Manager Project Directorate V Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation
Enclosure:
As stated cc:
See next page DISTRIBUTION Docket File NRC & LPDR's PDV Reading DHickman OGC EJordan BGrimes ACRS (10)
OFC :DRSP/PDV/PM :DRS/D:PDV NAME :D _kA~n-W :GWKnighton DATE :07//288
- 07/VJ/88:
8807220371 880713 PDR ADOCK 05000361 OFFICIAL RECORD COPY
RLpGt RESTATES o
UNITED STATES NUCLEAR REGULATORY COMMISSION o
WASHINGTON, D. C. 20555 July 13, 1988 Docket Nos.: 50-361 and 50-362 Mr. Kenneth P. Baskin Mr. Gary D. Cotton Vice President Senior Vice President Southern California Edison Company Engineering and Operations 2244 Walnut Grove Avenue San Diego Gas & Electric Company Post Office Box 800 101 Ash Street Rosemead, California 91770 Post Office Box 1831 San Diego, California 92112 Gentlemen:
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION, SAN ONOFRE, UNITS 2 & 3 (TAC NOS. 68425 AND 68426)
During the course of our review of your proposed change to Technical Specification 3/4.1.3.4 "CEA Drop Time," we find that additional information is needed. The requested information is described in the Enclosure. Please forward this information as soon as possible so that we may complete our review.
If you have any questions regarding this request, please contact me.
Sincerely, Donald E. Hickman, Project Manager Project Directorate V Division of Reactor Projects -
- III, IV, V and Special Projects Office of Nuclear Reactor Regulation
Enclosure:
As stated cc:
See next page
Mr. Kenneth P. Baskin San Onofre Nuclear Generating Southern California Edison Company Station, Units 2 and 3 cc:
Mr. Gary D. Cotton Mr. Hans Kaspar, Executive Director Senior Vice President Marine Review Committee, Inc.
Engineering and Operations 531 Encinitas Boulevard, Suite 105 San Diego Gas & Electric Company Encinitas, California 92024 101 Ash Street Post Office Box 1831 San Diego, California 92112 Mr. Mark Medford Southern California Edison Company Charles R. Kocher, Esq.
2244 Walnut Grove Avenue James A. Beoletto, Esq.
P. 0. Box 800 Southern California Edison Company Rosemead, California 91770 2244 Walnut Grove Avenue P. 0. Box 800 Mr. Robert G. Lacy Rosemead, California 91770 Manager, Nuclear Department San Diego Gas & Electric Company Orrick, Herrington & Sutcliffe P. 0. Box 1831 ATTN:
David R. Pigott, Esq.
San Diego, California 92112 600 Montgomery Street San Francisco, California 94111 Richard J. Wharton, Esq.
University of San Diego School of Alan R. Watts, Esq.
Law Rourke & Woodruff Environmental Law Clinic 701 S. Parker St. No. 7000 San Diego, California 92110 Orange, California 92668-4702 Charles E. McClung, Jr., Esq.
Attorney at Law Mr. S. McClusky 24012 Calle de la Plaza/Suite 330 Bechtel Power Corporation Laguna Hills, California 92653 P. 0. Box 60860, Terminal Annex Los Angeles, California 90060 Regional Administrator, Region V U.S. Nuclear Regulatory Commission Mr. C. B. Brinkman 1450 Maria Lane/Suite 210 Combustion Engineering, Inc.
Walnut Creek, California 94596 7910 Woodmont Avenue, Suite 1310 Bethesda, Maryland 20814 Resident Inspector, San Onofre NPS c/o U. S. Nuclear Regulatory Commission Mr. Dennis F. Kirsh Post Office Box 4329 U.S. Nuclear Regulatory Commission San Clemente, California 92672 Region V 1450 Maria Lane, Suite 210 Mr. Sherwin Harris Walnut Creek, California 94596 Resource Project Manager Public Utilities Department Mr. Dennis M. Smith, Chief City of Riverside Radiological Programs Division City Hall Governor's Office of Emergency Services 3900 Main Street 2800 Meadowview Road Riverside, California 92522 Sacramento, California 95832
REQUEST FOR ADDITIONAL iNFORMATION ON EONGS 2/3. INCREASED CEA DROP TIME L The delay from the time the trip breakers open until the CEA== begin to drop has been assumed to increase from 0.7 Eeconds to 0.6 sezonds.
However, why has the actual CEA, drop thfe to 90 X iserunrni been aEsSUfmed to decrea.se to
- V6 SEConds fromi 2.7 sconds?
- 2. justify that the increase in BERRI toOOD.5sfiin to r
a low DNBR trip early enough to compens.atc. fc.r n
incesd holding!
c:oi decay t-ime of up to
.3 seOcnd..
SCE has proposed changing the Cycle 4
COL DNB" margi-to accommodatc -dtI loss of f low rargin to offs.t loner CEA drop il DNBR margin when COLSS i=s out of E
Iso be modified?
When wil these changes be su bmitted and iustified b
'yny