ML18005B120
| ML18005B120 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 10/13/1989 |
| From: | Richey R CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| HO-890105-(O), NUDOCS 8910270099 | |
| Download: ML18005B120 (3) | |
Text
gccy&RAYED Dl BUTlON DEMONSTRATlON SYMBOL REGULATO INFORMATION DISTRIBUTION LITEM (RIDS)
.CCESSION NBR:8910270099 DOC.DATE: 89/10/13 NOTARIZED: NO DOCKET ¹ FACIL:50-400 Shearon Harris Nuclear Power Plant, Unit 1, Carolina 05000400 AUTH.NAME AUTHOR AFFILIATION RICHEY,R.B.
Carolina Power a Light Co.
RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
SUBJECT:
Special rept:on 890904,seismic monitor sys declared inoperable.
DISTRIBUTION CODE:
ZE22D COPIES RECEIVED:LTR i ENCL g SIZE:+
TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.
NOTES:Application for permit renewal filed.
D 05000400 8
RECIPIENT ID CODE/NAME PD2-1 LA BECKER,D INTERNAL: ACRS MICHELSON ACRS WYLIE AEOD/DSP/TPAB DEDRO NRR/DEST/ICSB 7
NRR/DEST/MTB 9H NRR/DEST/RSB 8E NRR/DLPQ/HFB 10 NRR/DOEA/EAB 11 NUDOCS-ABSTRACT RES/DSIR/EIB EXTERNAL'G&G WILLIAMSF S LPDR NSIC MAYSFG NUDOCS FULL TXT COPIES LTTR ENCL 1
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1 RECIPIENT ID CODE/NAME PD2-1 PD ACRS MOELLER AEOD/DOA AEOD/ROAB/DSP NRR/DEST/ESB 8D NRR/DEST/MEB 9H NRR/DEST/PSB 8D NRR/DEST/SGB 8D NRR/DLPQ/PEB 10 RR/DRY/gPB 10 G
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LTTR 38 ENCL 38
Carolina Power & Ught Company P. O. aox 165 ~ New Hill, N. C. 27562 R. B. AlCHEY Manager Hanta Nuclear Project OCT1 3 l989 Pile Number'.
SHF/10-13510C Letter Number.
HO-890105 (0)
United States Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, DC 20555 HARRIS NUCLEAR PROJECT UNIT 1 DOCKET NO. 50-400 LICENSE NO. NPF-63 NRC 14-DAY SPECIAL REPORT In accordanc'e with Technical Specifications 3.3.3.3 and 6.9.2 for the Shearon Harris Nuclear Power Plant, Unit No. 1, Carolina Power 6 Light Company hereby submits this Special Report.
This Special Report concerns the operability of the Seismic Monitor.
Very truly yours, j&g R.
B. Richey, Manager Harris Nuclear Project RBR:djs Enclosure cc.'Mr. R. A. Becker (NRR)
Mr. S.
D. Ebneter (NRC - RII)
Mr. J.
E. Tedrow (NRC - SHNPP)
MEM/HO-8901050/1/OS1 89'102?0099 891013 PDR ADOCK 05000400 S
PNV
SEISMIC MONITOR SPECIAL REPORT BACKGROUND INFORMATION:
On September 4, 1989, at 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> the Seismic Monitor System was declared inoperable due to the Seismic Annunciator Panel in'he Main Control Room having annunciators lit for no apparent reason.
Efforts to return the monitor to operable status within 30 days have been unsuccessful.
- Thus, this special report is being submitted pursuant to Technical Specification 3.3.3.3 action a,
which requires the seismic monitor instrumentation to be operable at all times.
DESCRIPTION OF EVENT:
There are three floor mounted Triaxial Response Spectrum Recorders located on the 221 elevation of the Containment building which feed a
Response
Spectrum Annunciator that displays.
in the Main Control Room.
One of the thre'e recorders SR-DEISM-5204C is giving an indication on the Annunciator Panel in the Main Control Room for no apparent reason and was declared inoperable at 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> on September 4,
1989.
CAUSE:
The problem was discussed with the vendor and it is thought to be a defective Recorder Logic PC board.
This does not affect the passive portion of the recorder which was visually inspected on September 13, 1989, with no problems being identified.
The exact cause of the false indication on the annunciator panel has not yet been determined.
CORRECTIVE ACTIONS:
The vendor, ENGDAHL ENTERPRISES, is scheduled to be on site for an eighteen month calibration on October 30,
- 1989, and the required repairs will be made at that time.
MEM/HO-8901050/2/OS1