ML20084F565
| ML20084F565 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 10/31/1973 |
| From: | Amish K ROCHESTER GAS & ELECTRIC CORP. |
| To: | Oleary J US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| AO-50-244-73-10, NUDOCS 8304210173 | |
| Download: ML20084F565 (4) | |
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I DIVISION OF COMPLIAUCE MO.'THLY REPORT FOR FEBRUARY 1971 i
SOUTHERN CALIFORNIA EARTHQUAKE An earthquake with a magnitude of 6.5 on the Richter scale occurred at approximately 6: 00 a.m. on February 9, 1971, near Newhall, California (about 30 miles north of downtown Los Angeles).
The epicenter occurred along the Soledad Fault about 10 miles east of Newhall.
Extensive structural damage occurred, principally in the San Fernando Valley area of Southern California.
The following information was gathered by Region V (San Francisco), by telephone and licensee reports, concerning the effect of the earthquake on AEC licensed activities.
Reactors Where possible, the reactor facilities in the Los Angeles area were telephoned for the purpose of obtaining information re-lating to any possible effects of the Newhall earthquake on the facilities.
None of the reactor facilities checked sufferet any damage.
The San Onofre plant was operating at 450 Mwe and its operation was not significantly affected by the quake.
The strong motion accelercmeter was actuated and recorded the effects at San Onofre.
The tape was removed for analys'.s by Teledyne.
The vibration of the No. 6 bearing on the turbj ne-generator increased from 2-3 mils to 8.6 mils and then returned to normal.
About 10 minutes after the quake, the line frequency dropped to 59.2 hertz because of a separation from the PG&E system near Newhall.
As a result, the SDG&E system which had been receiving 50 Mwe supplied the SCE system with 120 Mwe.
There was a spent fuel pool level annunciator (high-low) from water " slopping" in the pool.
The emergency plan for earthquakes was initiated.
The plan in-cludes starting b6th emergency diesel generators and making a detailed inspection of the plant including the critical pressure vessels and piping located inside the containment vessel.
All control rods were checked and found to be operating satisfactorily.
No increase in make-up water rate had been noted nor had any of the containment building sump pumps operated.
The detailed in-spection did not disclose any anomalies.
8304210173 731031 DR ADOCK 050002 Fuel Facilities S
The only fuel facility affected by the earthquake was the DeSoto Avenue Plant of Atomics International.
That plant is located approximately fifteen miles from the quake epicenter and about five miles from the area evacuated'due to the possibility of rupture of the Van Norman Reservoir.
Atomics International sustained no major facility damage at either its DeSoto Avenue or Santa Susana sites.
No AEC licensed material j
was released.
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February 16, 1971 NOTE TO FILES At the request of Jim Lyman, Public Information, I called Roger Newburger, Managing Editor of " Nucleonics Week," to provide him with the information which vc have obtained from Scr2thern California Edison Company concerning the effect of the earthquake which occurred in the San Fernando Valley on February 9,1971, on the San Onofre Nuclear Power Station. The information which I provided to Mr. Newburger la contained in the attachment to the letter from Engelken to Mr. W. J. MacNelis, Administrative Assistant to Congress-man Burt L. Talcott, dated February 11, 19^. Mr. Newburger had no substantive questions concerning the information and appeared pleased to get the information. Mr. H. L. Price was advised of the call to Mr. Newburger bafore it van placed.
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FEB 2 3 yn Chaiman Seaborg Comissioner Eamey Commissioner Johnson Comissioner Larson EFFfCTS OF RECENT CALIFOIUiIA EARDIQUAKI; - 00tffEERN CALIFOIGIIA EDISON COMPANY (SAN ONOFRE)
I am enclosing for your information a summary description of the effects of the recent carthquake, centered near Los Angelen, California, on the operation of the Southern California Edison Company's San Onofre Nuclear donerating Station. Prelininary infomation on this matter van furnished your Special Assistant on February 9,1971.
(m c~:1) iiLP Harold L. Price Director of Ecculation Enclocure:
Report, as stated cc: General Manager 2 General Counsel 2 Secretary (2) bec: GMKavanagh, AGMR ED0'Neill,OCR(2)
EPrice, DR MShaw, RDT CKBeck, DR HAHarris, PI MEann, DR JDAnderson, INS SIUlanauer, DR DR Reading File CLHenderson, DR Central File LDLov, 00 C0 Regions I, II, III, IV, V PM4 orris, DE RFFraley, ACRS (3) rpt only JFoucherd, PI RSBoyd, DE EGCase, DRS RCDeYoung, DE AGiambusso, CO RSchemel, DE j
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i Benort by tiqe Danctor. Division of Compliance 4
j On February 9,1971, an earthquake occurred in the San Fernando Valley, i
approximately 30 miles north of Los Angeles, California. S e magnitude of i
this earthquake was 6 5 on the Richter scale. Se earthquake epicenter was j
located appmximately 85 miles north of the Southern California Edison Com-pany's San Onofre pressurised water reactor.
Be Division of Coispliance contacted by telephone on February 9,1971, the Southern Califomia Edison Company and the licensees of the five research reactor facilities located in or near the Los Angeles area to deterimine what effect the earthquake had on these facilities. All licensees reported that i
no apparent damage resulted from the earthquake.
i A summary description of the information provided by the Southern California Edison Company is as follows:
1.
The San Onofre facility was operating at 450 megswatts electric, 100 per-cent power, at the time of the earthquake. Operations-von not affected.
2.
Se licensee's emergency action plan for seismic disturbances was placed in effect. Se preM==W actions taken by the licensee included the following:
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Both emergency diesel generators were started as a ymoeution and 7 =M met.Stt.aAby... SS unjta..functiGasd'.420perlym
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All control rods were checked for proper position and operability.
No abnozualities were noted.
c.
Checks were made on the rate of addition of makeup water to the primary system and on the operation of the contaiment building sump pumps to see if there was any indication of a leak in the prinary system. No indication of a problem was noted.
d.
An inspection was made of the plant outside containment. This inspection included a check of the radiation processing and effluent control systec and of the fuel building which contains ncy and spent fuel. No damage van evident.
e.
An evaluation was made of core physics parameters and special surveillance tests were conducted. No abnormalities were noted.
f.
Entries were made by personnel into containment to look for damage.
Visual checks were made of the reactor coolant system, the control rod drive housin6s, steam generators, primary pumps, pressurizer, and associated piping. No abnomalities vere noted.
3 The earthquake automatically trissered the strons-motion accelerometer stich was installed for the purpose of measuring forces caused by seismic disturbances. The reco: dings from this instrument are being processed and will be available for analyses in the near future.
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Benort to the Director of Beaulation by the Director. Division of Coen11ance On February 9,1971, an earthquake occurred in the San Fernando Valley, appmximately 30 miles north of Los An6eles, California. The magnitude of-this earthquake was 6 5 on the Richter scale. The eart.hquake epicenter was located approximately 85 miles north of the Southern California Edison Com-pany's San Onofre pressurized water reactor.
The Division of Compliance contacted by telephone on February 9,1971, the Southern California Edison Company and the licensees of the five research reactor facilities located in or near the Los Angeles area to detemine what effect the earthquake had on these facilities. All licensees reported that no apparent damage resulted fro:a the earthquake.
A sn=av description of the infomation provided by the Southern California Edison Company is as follows:
1.
The San Onofre facility was operating at 1650 megawatts electric,100 per-cent power, at the time of the earthquake. Operations were not affected.
2.
The licensee's emergency actica plan for seismic disturbances was placed l
in effect. The preplanned actions taken by the licensee included the following e.
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All control rods were checked for proper position and operability.
No abnormalities were noted.
c.
Checks were made on the rate of addition of makeup water to the primary system and on the operation of the containment building sump pumps to see if there was any indication of a leak in the primary system. No indication of a problem was noted.
d.
An inspection was made of the plant outside containment. This inspection included a check of the radiation processing and effluent control system and of the fuel building which contains new and spent fuel. No damage was evident.
c.
An evaluation was made of core physica parameters'and special curveillance tests were conducted. No abnoniaalities were noted.
f.
Entries were made by personnel into containment to look for damage.
Visual checks were made of the reactor coolant system, the control rod drive housings, steam generators, primary pumps, pressuriser, and associated piping. No abnormalities were noted.
3 The earthquake automatically triggered the strong-motion accelerometer which was installed for the purpose of measuring forces caused by seismic disturbsnces. The recoatings from this instrument are being processel and will be available for analyses in the near future.
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I 3-o Tbc Special Assistants to the Consnissioners were infomed by telephone on February 9, 1971.
Mr. W. J. MacNelis, Administrative Assistant to Congreceman B. L. Talcott (California), requested infomation on the effects of the corthquake on the San Onofre facility from the Division of Public Relations on February 10, 1971.
The Division of Compliance responded to this inquiry and the cubstance of the infomation contained in this report was provided Mr. HacNelis by telephone on February 11, 1971, and confirmed, at his request, in writing.
' Ate staff of the Joint Cotnittee on Atomic Energy van infomed by telephone.
A letter of confimation to them is in preperation.
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