ML20071D589
| ML20071D589 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 02/28/1983 |
| From: | Ray H SOUTHERN CALIFORNIA EDISON CO. |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| 83-091, 83-91, RO-83-005, RO-83-5, NUDOCS 8303110239 | |
| Download: ML20071D589 (2) | |
Text
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S AN ONOFRE NUCLE AR GENER ATIN G S T A TION P.O. BOX 125 S AN C LEMENTE, C A LIFORNI A 92672 y
H. B. R A Y ictepwoma
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February 28, 1983
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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:
Su bject:
Docket No. 50-362 Prompt Report Licensee Event Report No.83-005 San Onofre Nuclear Generating Station, linit 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 February 25, 1983 prompt notification to the NRC of a reportable occurrence involving the snubbers in two Reactor Coolant sample lines: one capable of being isolated by Containment Isolation Valve 3HV508 and the other capable of being isolated by Containment Isolation Valve 3HV517.
On February 22, 1983, while Unit 3 was in Mode 5, loose snubbers and hangers in two sampling lines of the Reactor Coolant loops were observed We have been una'le to deterine when, since the by a Station engineer.
o last surveillance (October 1982), the snubbers and hangers were loosened.
However, since the components may have been loosened prior to entry into Mode 4 on January 5,1983 and Limiting Conditions for Operation (LC0's) 3.7.6 " Snubbers" and 3.6.3 " Containment Isolation Valves", are applicable in Modes 1 through 4, the prompt notification of February 25,1983 was made.
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8303110239 830228 i
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PDR ADOCK 05000362 l
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ZEuQ 68-91
R. H. Engel ken February 28, 1983 i
Investigation to determine the cause, the corrective actions to be taken, and measures to prevent recurrence of this event are continuing.
Licensee Event Report (LER) No.83-005 will address this event and will be submitted by March 11, 1983.
If there are any questions regarding the above, please contact me.
Sincerely,
'hv cc:
A. E. Chaffee (USNRC Resident Inspector, San Onofre Units 2 & 3)
R. J. Pate (USNRC Resident Inspector, San Onofre Units 2 & 3) f
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