ML13330A155
| ML13330A155 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 11/18/1980 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Dietch R Southern California Edison Co |
| Shared Package | |
| ML13330A156 | List: |
| References | |
| TASK-08-03.B, TASK-8-3.B, TASK-RR LSO5-80-11-021, LSO5-80-11-21, NUDOCS 8012110435 | |
| Download: ML13330A155 (6) | |
Text
DiSJ.BI.BU2JON:
DR OI&E (3)
Docket No. 50-206 TERA' Gray File NSIC GCwalina ORB #5 RF WRussell NRR Rf DEisenhut Mr. R. Dietch RPurple Vice President JRoe Nuclear Engineering and Operations RTEdesco Southern California Edison Company TNovak 2244 Walnut Grove Avenue GLainas Post Office Box 800 DCrutchhfield Rosemead, California 97770 HSmith SSNowicki C
Dear Mr. Dietch:
SUBJECT:
SEP TOPIC VIII-3.B, D. C. POWER SYSTEM BUS VOLTAGE (SAN ONOFRE 1)
Enclosed is a copy of the memorandum from F. Rosa titled "D-C.
System Monitoring Annunciation" that you had requested in late September.
Sincerely, Original signed by DennisM. Crutchfield Dennis M. Crutchfield, Chief Operating Reactors Branch #5 Division of Licensing
Enclosure:
As stated cc w/enclosure:
See next page 80121
- (SEE ATTACHED YELLOW FOR PREVIOUS CONCURRENCE)
OFICE,D.L:ORB#5/LA DL:ORB #5/PM DL SURNAME.
HSmith:cc
.O'onnor eld DURAE.
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1/14/80*
11/14/8n
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./.........
DATE 7
NRC FORM 318 (9-76) NRCM 0240
- U.S.
GOVERNMENT PRINTING OFFICE: 1979-289-369
Docket No. 50-206 Mr. R. Dietch Vice President Nuclear Engineering and Operations Southern California Edison Company 2244 Walnut Grove Avenue Post Office Box 800 Rosemead, California 91770
DearMr. Dietch:
SUBJECT:
SEP TOPIC VIII-3.B, D. C. POWER SYSTEM BUS VOLTAGE (SAN ONOFRE 1)
Enclosed is a copy of the memorandum from F. Rosa titled "D. C.
System Monitoring Annunciation" that you have requested in late September.
Sincerely, Dennis M. Crutchfield, Chief Operating.Reactors Branch #5 Division of Licensing
Enclosure:
As stated cc w/enclosure:
See next page DISTRIBUTION Docket DCrutchfield NRC PDR HSmith Local PDR SNowicki ORB Reading NSIC NRR Reading TERA DEisenhut ACRS (16)
RPurple OI&E (3)
JRoe OELD TNovak GLainas RTedesco OFFICE DL-R #5 DL: 0 B DL suRNAMEH
.c DCr c field NRC FORM 318 (9-76) NRCM 0240
- U.S.
GOVERNMENT PRINTING OFFICE: 1979-289-369
t REGU UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON. D C 20555 November 18, 1980 Docket No. 50-206 LS05-80-11-021 Mr. R. Dietch Vice President Nuclear Engineering and Operations SSouthern Californ ia Edison Company 2244 Walnut Grove Avenue Post Office&Box 800 Rosemead, California 91770
Dear Mr. Dietch:
SUBJECT:
SEP TOPIC VIII-3, D. C. POWER SYSTEM BUS VOLTAGE (SAN :N0FRE 1)
Enclosed is a copy of the memorandum from F. Rosa titled "D. C.
System Mon itoring Annunciation" that you had requested in late September.
Sincerely, nn is M. Crutchfield, p-ief Operating Reactors Bra6ch #5 Division of Licensing
Enclosure:
As stated cc w/enclosure:
See next page
Mr. November 18, 1980 cc w/enclosure:
Charles R. Kocher, Assistant Director, Technical Assessment General Counsel.
Division Southern California Edison Company Office of Radiation Programs Post Office Box 800 (AW-459)
Rosemfead, California 917701 U. S. Environmental Protection Agency David. R.. Pigott Crystal Mall #2 SSamuel B. Casey Arlington, Virginia 20460' Chickering &Gregory Three. Embarcadero Center U. S. Environmental Protection Twenty-Third Floor Agency San Francisco, California 94111 Region IX Office ATTN:
EIS COORDINATOR Jack E. Thomas 215 Freemont Street Harry B. Stoehr San Francisco, California 94111 San Diego Gas & Electric CompanyR p. O.Box 1831'
,Richard Schaffstall' P. 0..Bo 183..KMC, Inorporated
,San Diego, 'California. 92112 KCIncoroae 1747 PennsylvaniaiAvenue, N. W.
Resident Inspector Washington, D. C. 20006 c/o U. S. NRC P. 0. Box AA Oceanside, California 92054 Mission Viejo Branch Library 24851 Chrisanta Drive Mission Viejo, California 92676 Mayor City of San Clemente San Clemente, California 92672 Chairman Board of Supervisors County of San Diego San Diego, California 92101 California Department of Health ATTN:
Chief, Environmental Radiation Control Unit Radiological Health Section 714 P Street, Room 498 Sacramento, California 95814
- 9.
UNITED STATES NUCLEAR REGULATORY COMMISSION VWASktNGIOP4.M.C.
M655 MEMORANDUM FOR:
D. Crutchfield, Br;ach Chief, SEPS,
- DOR, NRR FROM:
F. Rosa, Chief, PSB, DSS
SUBJECT:
D. C. SYSTEM fONITORING AND ANNUNCIATION In response to your memorandum of September 25, 1979, we offer the following comments on D.C. power system monitoring and annunciation:
The specific requirements for D. C. power system monitoring derive from the general requirements embodied in Section 5.3.2(4), 5.3.3(5) and 5.3.4(5) of IEEE Std 308-1974, and in Regulatory Guide 1.47. In sunary, these general requirements simply state that the D.C. system (batteries, dis tribution systems and chargers) shall be monitored to the extent that it is shown tobe ready to perform its intended function. Accordingly, the guidelines used by PSB in the licensing review of the D.C. power system designs are as follows:
As a minimum, the following indications and alarms of the Class lE D.C.
power system status shall be provided in the control room:
Battery current (ammeter-charge/discharge)
Battery charger output current (ammeter)
D.C. bus voltage (voltmeter)
Battery charger output voltage (voltmeter)
Battery high discharge rate alarm D.C. bus undervoltage and overvoltage alarm D.C. bus ground alarm (for ungrounded system)
Battery breaker(s) or fuse(s) open alarm Battery charger output breaker(s) or fuse(s) open alarm Battery charger trouble alarm (one alarm for a number of abnormal conditions which are usually indicated locally)
It should be noted that some additional status indications and alarms are provided in the control room or locally by most current designs.
We have concluded that the above cited monitoring, augmented by the periodic test and surveillance requirements included in the Technical Specifications, provide the required assurance that the Class 1E D.C. power system is ready to perform its intended safety function.
-2 e note that our'above guidelines differ from and are more conserytive than the E.G.&G.
recomaendations cted in your memorandum.
Faust Rosa, Chief Power Systems Branch Division of Systems Safety.