ML20098A076
| ML20098A076 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 09/10/1984 |
| From: | Haynes J SOUTHERN CALIFORNIA EDISON CO. |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| NUDOCS 8409240268 | |
| Download: ML20098A076 (2) | |
Text
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Southern California Edison Company h6 SAN OP.OFRE NUCL E AR GENER A TING ST ATION P.O. BOK 128 S AN CLEMENTE. C ALIFORNI A 92672 J. G. H A YN E S '
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III4I49I*7700 September 10, 1984 U.S.. Nuclear Regulatory Commission Office of Inspection and Enforcement
' Region.V 4
.'1450 Maria Lane, Suite 210
-Walnut' Creek, California 94596-5368
-Attention:
Mr. - J. B. Martin, Regional Administrator g
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Dear Sir:
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Subject:
Docket No. 50-362 6
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2 Special Report 2g g
San Onofre Nuclear Generating Station, Unit 3 5;;
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Letter, J.. G. _ Haynes _ (SCE) to J. B. Martin (NRC),
Reference:
dated June 7,1984 m
< Pursuant to Section 6.9.2 of ^ppendix A, Technical Specifications to Facility Operating Licence NPF-15'for San Onofre Unit 3, this submittal provides the required Special Report'for inoperable radiation monitoring instrumentation.
On August 25,1984, at 0745, with Unit 3 in Mode 1 at 18*4 power, Condenser Air Ejector Wide Range Gas Monitor 3RT-7870 was removed from service for the 92-day surveillance.' Redundant Monitor 3RT-78N was out of service for design modifications (previously reported in _ the Reference).
Flow rate estimates, grab samples and auxiliary sampling were initiated in accordance with limiting
- Condition 'or Operation (LCO) 3.3.3.9, Action Statements 36, 37 and 40.
- During perfirmance of the surveillance, a cracked soider joint was noticed in
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a pipe connection of the Mid-High Range Sample Line Air Dryer which is used for accident monitoring. There was no air inleakage into the Low Range Effluent Sample System which is used for normal effluent monitoring. A work
- order was initiated and the solder joint was repaired. Since 3RT-7870 was not
' restored to operable statu within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, the preplanned alternate method of monitoring was initiated per LCO 3.3.3.1, Action Statement 19. The 92-day surveillance was completed and Monitor 3RT-7870 was returned to operable status in accordance with Station Procedure 5023-3-3.21.1 at 1040 on August 31, 1984.
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8409240268 840710 PDR ADOCK 05000362 S
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Mr. :-J.'. B. Martin. September 10, 1984 m
Neither the. health-or safety;of plant personnel nor the public were affected
' hy this event.
If;you require any additional information, please so advise.
-Sincerely,
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A. E. Chaffee'(USNRC Senior Resident Inspector, Units 1, 2 and 3)
J.!P. Stewart (USNRC Resident Inspector, Units 2 and 3) i; U.S.~ Nuclear Regulatory Commission
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-Document Control Desk-
.. Institute of Nuclear Power Operations (INPO) 4
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