ML17250A904
| ML17250A904 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 07/31/1989 |
| From: | Spector S ROCHESTER GAS & ELECTRIC CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 8908080009 | |
| Download: ML17250A904 (3) | |
Text
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BUTION'E)F04 S TIO.i SYFI Eg REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:8908080009 DOC.DATE: 89/07/31 NOTARIZED: NO FACIL:50-244 Robert Emmet Ginna Nuclear Plant, Unit 1, Rochester G
AUTH.NAME AUTHOR AFFILIATION SPECTOR,S.
Rochester Gas
& Electric Corp.
RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
SUBJECT:
RO:on 890929 w/reactor power at approx 99% full power,MRPI failed, plant shutdown
& unusual event declared.
DISTRIBUTION CODE:
IE22D COPIES RECEIVED:LTR ENCL SIZE:
TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.
NOTES:License Exp date in accordance with 10CFR2,2.109(9/19/72).
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05000244 05000244 RECIPIENT ID CODE/NAME PD1-3 LA JOHNSON,A INTERNAL: ACRS MICHELSON ACRS WYLIE AEOD/DSP/TPAB DEDRO NRR/DEST/ADE 8H NRR/DEST/CEB 8H 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 RGN1 FILE 01 EXTERNAL EG&G WILLIAMSg S L ST LOBBY WARD NRC PDR NSIC MURPHYgG ~ A COPIES LTTR ENCL 1
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1 RECIPIENT ID CODE/NAME PD1-3 PD ACRS MOELLER AEOD/DOA AEOD/ROAB/DSP IRM/DCTS/DAB NRR/DEST/ADS 7E NRR/DEST/ESB 8D NRR/DEST/MEB 9H NRR/DEST/PSB 8D NRR/DEST/SGB 8D NRR/DLPQ/PEB 10 J3RgP/
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LTTR 43 ENCL 42 pD D
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ROCHESTER GAS AND ELECTRIC CORPORATION
~ 89 EAST AVENUE, ROCHESTER, N.Y. 14649.0001 July 31, 1989 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555
Subject:
Follow-up Summary of Close-out of July 29, 1989 Unusual Event.
R.E.
Ginna Nuclear Power Plant Docket No. 50-244 In accordance with NUREG 0654, FEMA-REP-l, Rev, 1 reporting requirements which roquiros a writtan summary oi "Clooo-out or.
Class Reduction Conditions",
the attached Close-out Summary for the July 29, 1989 Unusual Event is hereby submitted.
This event has in no way affected the public's health and safety.
V~ry t:i >>3 y yci>>i:cs, U tn>>1 oy H
f3'>out or Superintendent-Ginna Station XC; U.S. Nuclear Rogulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406 Ginna USNRC Senior Resident Inspector R.C.
Mecredy D.W. Durko 90S0Q000P r DR ADOCK 05000z44 PDC WC>+
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I Attachment To Close-Out of Jul 29 1989 Unusual Event On July 29, 1989 at 1843 EDST with reactor power at approximately 994 full power, the Control Room received annunciator alarm C-29 (MRPI System Failure).
It was subsequently determined that the Microprocessor Rod Position Indication System (MRPI) had failed, disabling both MRPI CRTs and the plant process computer system (PPCS) rod position indication for all twenty-nine (29) control rods.
The loss of all control rod position indication placed the plant in a
condition not permitted by the plant's Technical Specifications.
At approximately 1933 EDST, July 29,
- 1989, a plant shutdown was commenced to comply with the plant Technical Specif ications Section 3.0.1.
At approximately 2035 EDST, July 29, 1989 the Operations Shift Supervisor declared an Unusual Event in accordance with SC-100, "Ginna Station Event Evaluation and Classification",
EAL:
Loss of Indicators, Annunciators or Alarms; Loss of Indication or Alarms requiring a plant shutdown.
All offsite notifications were made per SC-601, "Unusual Event Notification".
At approximately 0132
- EDST, July 30, 1989 with the reactor subcritical, the reactor trip breakers were opened with all control rods inserted.
Because the Control Rod Position Indication System is only required by the plant technical specifications when the reactor is critical, the Operations Shift Supervisor with approval and concurrence from the plant manager, the Operations
- Manager, and the Duty Engineer, declared the Unusual Event terminated at 0140
- EDST, July 30, 1989 in accordance with SC-110, "Ginna Station Event Evaluation for Reducing the Classification".
All offsite agencies were notified of the termination of the Unusual Event.