ML20058D857
| ML20058D857 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 07/13/1982 |
| From: | Ray H SOUTHERN CALIFORNIA EDISON CO. |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| RO-82-065, RO-82-65, NUDOCS 8207270418 | |
| Download: ML20058D857 (1) | |
Text
W?En'En Southern California Edison Company 17,;
c;CE fi S AN ONOFRE NUCLE AR GENER A TING S T A TION P.O. B ox 128 S AN CLEMENTE C ALIFORNI A 92672 f
H.B. RAY Juiy 13, 1982 ST ATION M AN AGE R tiles 492-7 P00 a
U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 92596-5368 Attention:
Mr. R. H. Engelken, Regional Administrator
Dear Sir:
Subject:
Docket No. 50-361 Licensee Event Report No.82-065 San Onofre Nuclear Generating Station, Unit 2 Pursuant to Technical Specification 6.9.1.12.b, this letter confirms our prompt notification of the resident inspector this date, of a reportable occurrence invcsiving Limiting Condition for Operation (LCO) 3.7.5 on the Control Room Emergency Air Cleanup System.
At- 0710, July 11,1982 while operating in Mode 4, both trains A and B of the Control Room Emergency Air Cleanup System were declared inoperable for a period of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and 40 minutes.
Since the action statements associated with LCO 3.7.5 do not address both trains out of service in Modes 1 through 4, plant cooldown was commenced at 0805 in accordance with specification 3.0.3, within one hour after declaring the second train inoperable.
Train B was restored to operable status at 0940 by freeing a Jammed relay in the refrigerant compressor starting circuit. Train A was restored to operable status at 1900 by replacing a defective compressor motor bearing temperature module. Our investigation into this occurrence is continuing and our follow-up report, including a completed LER form, will be provided to you no later than July 23, 1982.
Sincerely, cc:
A. E. Chaf fee (USNRC Resident inspector, San Onof re Unit 2) 8207270418 820713 PDR ADOCK 05000361 Qf S