ML20071D551
| ML20071D551 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 03/02/1983 |
| From: | Ray H SOUTHERN CALIFORNIA EDISON CO. |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 83-094, 83-94, RO-83-006, RO-83-6, NUDOCS 8303110224 | |
| Download: ML20071D551 (1) | |
Text
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S AN ONOFRE NUCLE AR GENER A TING S T A TION P.O. B O K 128 5 AN C LEMEN TE. C A LIFOR NI A 92672 H. B. R A Y
'd-vttepwoNE March 2, 1983 s'ar'o~ =a~an a o m a2 "a U. 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 No, 50-362 Prompt Report Licensee Event Report No.83-006 San Onofre Nuclear Generating Station, Unit 3 Pursuant to Section 6.9.1.12.b of Appendix A Technical Specifications to Operating License NPF-15 for San Onofre Unit 3, this submittal provides the written confirmation of our March 1,1983 prompt notification to the NRC of a reportable occurrence involving the Control Room Bnergency Air Cleanup System (CREACUS).
On February 26, 1983 while Unit 3 was in Mode 4, CREACUS Train A was declared inoperable for charcoal r? placement and Limiting Condition for Operation (LCO) 3.7.5 was invoked.
The Action Statement associated with this LC0 allows operations to continue for up to seven days before requiring Train A to be restored operable or initiation of a cooldown.
On March 1,1983 at 0500 Unit 3 was in Mode 4, emergency chiller E-335 associated with CREACUS Train B failed to start and was declared inoperable.
Since LC0 3.7.5 does not address the inoperability of both trains, while in Modes 1 through 4 LC0 3.0.3 was invoked.
Train A was restored to operable status at 0540 and LC0 3.0.3 terminated.
Licensee Event Report (LER) No.83-006 will include the results of investigation of this occurrence and will be provided by March 15, 1983.
Public health and safety were not affected during this event.
If there are any questions regarding the above, please contact me.
Sincerely,
/ '
//
cc:
A. E. Chaffee (USNRC Resident Insp ctor San Onofre Units 2 & 3)
R. J. Pate (USNRC Resident Inspector 7 San Onofre Units 2 & 3)
Ih303110224 830302 PDR ADOCK 05000362 p -- R 0
PDR 63 -b