ML20070C092
| ML20070C092 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 11/30/1982 |
| From: | Ray H SOUTHERN CALIFORNIA EDISON CO. |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| RO-82-001, RO-82-1, RO-82-142, NUDOCS 8212140035 | |
| Download: ML20070C092 (2) | |
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8 92 Southern California Edison Company NC p f t:
S AN ONOFRE NUCLE A R GENER A TING ST A TIC r P.O. e O n 92 8 S A N C LEMEN T E. C A LIFORNI A 92672 y
H. B. P AY T vettawons November 30, 1982
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..,.7,oo V. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596-5368 Attention:
Mr. R. H. Engelken, Regional Administrator
Dear Sir:
Subject:
Docket Nos. 50-361/50-362 Prompt Report Licensee Event Report No.82-142 (Docket No. 50-361)
Licensee Event Report No.82-001 (Docket No. 50-362)
San Onofre Nuclear Generating Station Units 2 and 3 Pursuant to Technical Specification 6.9.1.12b of Operating Licenses NPF-10 and NPF-15 for San Onofre Units 2 and 3, respectively, this letter confirms our November 29, 1982 prompt notification to the NRC of a reportable occurrence involving Limiting Condition for Operations (LC0's) 3.7.5 and 3.0.3 on both Units 2 and 3.
This confirmation letter is dispatched a day later than the "first working day following tha event" requirement of Technical Specification 6.9.1.12 as was approved by Mr. D.F. Kirsch of your office in a telephone conversation on November 29, 1982.
On November 24, 1982, while Unit 2 was in Mode 3 and Unit 3 was in Mode 6, l
CREACUS Train A was declared inoperable due to charcoal filter replacement on cooling unit E-418. The Action Statement associated with LCO 3.7.5 allows operations to continue for seven days before requiring that the train be restored operable.
On November 28,1982 at 1230 while Unit 2 was in Mode 3, and Unit 3 was in l
Mode 6, Emergency Chiller E-335 was declared inoperable due to a high Motor Winding Temperature trip. This rendered CREACUS Train B inoperable thus exceeding the limits of LCO 3.7.5.
Technical Specification LC0 3.0.3 became governing for both units, allowing one hour before a Unit 2 shutdown /cooldown was required.
8212140035 821130 DR ADOCK 05000 y gg 6? R
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R. H. Engelken November 30, 1982 Cooldown of Unit 2 was initiated promptly and efforts to restore chiller E-335 continued. At 1700 on November 28, 1982, chiller E-335 was declared operable and LC0 3.0.3 satisfied.
14-day Reports and LER 82-142 and LER 82-001 for Units 2 and 3,respectively3 will be provided by December 13, 1982, to complete our reporting requirements, and to describe the cause and corrective measures taken.
If there are any questions, please contact me.
Sincerely, A
cc:
A. E. Chaffee (USNRC Resident Inspector, San Onofre Unit 2/3) i
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