05000295/LER-1982-005, Forwards LER 82-005/01T-0.Detailed Analysis Encl

Forwards LER 82-005/01T-0.Detailed Analysis Encl

ML20042A427
Person / Time
Site:	Zion File:ZionSolutions icon.png
Issue date:	03/12/1982
From:	Graesser K COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20042A428	List: 05000295/LER-1982-005, Forwards LER 82-005/01T-0.Detailed Analysis Encl 05000295/LER-1982-005-01, /01T-0:on 820226,pieces of Nozzle Cover Hinges Found in 1B & 1D Steam Generator Primary Hot Legs Which Came from Cover Left in RCS During Spring 1981 Refueling Outage & Resulted in 4% Flow Reduction in Loop D,During 810413-0
References
NUDOCS 8203230411
Download: ML20042A427 (3)

LER-1982-005, Forwards LER 82-005/01T-0.Detailed Analysis Encl

Event date:
Report date:
2951982005R00 - NRC Website

text

7 Commonwealth Edison Zion G;n:cting Station Shiloh Blvd. & Lake Michigan Zion, Illinois 60099 Telephone 312/746-2084 March 12, 1982 6f /

Mr. James G.

Keppler

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Regional Director N

Office of Inspection and Enforcement N'

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Region III U.S.

Nuclear Regulatory Commission

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Glen Ellyn, IL 60137 tL a

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Reference:

Zion Generating Station

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Docket No. 50-295/DPR-39 ui Technical Specification, Section 6.6.2

Dear Mr. Keppler:

Enclosed please find Reportable Occurrence Report No.

50-295/82-05 for Zion Generating Station.

This occurrence was reported to Region III, Directorate of Regulatory Operations by telephone on 2/26/82 and by telegram /mailgram on 2/26/82.

This report is submitted to you in accordance with the requirements of the Technical Specifications, Section 6.6.2.a(6) which states that personnel error or procedural inadequacy which prevents or could prevent, by itself, the fulfillment of the functional requirements of systems required to cope with accidents analyzed in the SAR require a 14 day written report.

Very truly

urs, K. L. Graesser Superintendent Zion Station cc:

J. Kohler/J. Waters

Enclosure:

Reportable Occurrence Report No. 50-295/82-05 8203230411 820312 PDR ADOCK 05000295 S

PDR MAR 15 1982 lf d

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O Commonwealth Edison DEVIATION REPORT 1

Dva NO. 22 82 - 31 STA UNIT YEAR NO.

PART I l TITLE OF DEVI ATION OCCURREo 2V82 1700 Loose Part Resulting in RC Loon D Flou Reduction

,,,7 t rm SYSTEM AFFECTED PLANT STATUS AT TIME OF EVENT TESTING RC CSD 0

0 u00E

, P R(u,73 toAogu,E3 y

CESCRIPTION OF EVENT During the period 4/15/81 through 5/9/81, Unit 1 RC Loon D onorated with an approx. 5% flow reduction.

The indicated flows and orotective set-points were calibrated assuming that nominal flow conditions existed.

This resulted in non-conservative, loop D, 90% flow trip setpoints and a correnponding delay in the oroduction of a reactor trip signal upon

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10 CFR50.72 NRC RED PHONE C

a single loon loss of flow & over NOTIFICATION MADE YES NO EQUIPMENT FAILURE

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oArE v2U82 OVES O ~0

.0ax RE0uE S T

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RE Se0~S i et E SuPFavisea PART 2 l CPERATING ENGINEER'S COWENTS NONE AT TIIE PRESENT.

EVENT OF PUBL IC I N TERE ST C 24-HOUR NRC NOTIFICATICN REQ'O J. Rohler 2/26/92 1430 l

TECH. SPEC. VIOLATION TELEPH REGION III OATE TIME

[ Nf N REPORTABLE OCCURRENCE l

EGM/TELECOPY N

] 14 DAY RE P O R TA BL E /I. S. 6 ; 6, 2 ' '-'(

REGION 11I DATE TIME l

30 CAY RE80RTABLE/T.S.

CECO CORPORATE NOTIFICATION MADE O

^"";^SPE

' "EP0a7 aEo o IF AB VE N TIFICATI N IS PER 100FR21 l

A.I.R.

5-D AY WRITTEN REPORT RE0*D PER 10CFR21 50-M 5/ R2-0 5 t.E.R.

8 F.

We r 2/26/82 i

CECO COPPORATE OFFICER DATE TIME l

P RE L I M I N A RY REPORT R.

Budowle 2 /76 /R2 COMPLETED AND REVIE4ED

1. ERAriNJ O GINEER 0AYE l

INVESTIGATED REPCRT & RESOLUTION

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ACCESTED BY STATION 9EviE*

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3At/.e 2.

3/4/st

/r / n RESCLUTION APPROVED AND AUTHORIZED FOR DISTRIBUTION S T A fiCN SLPERINTENDENT DATE e4 5194 180n4 IS-52.I, 10 99

DVR No.

22-1-82-31

• As described in FSAR section 14.1.6.

The flow reduction is believed to have been caused by a S/G nozzle cover inadvertently left in the RC system during the spring 1981 refueling outage.

Pieces of hinges were dis-covered in IB and ID S/G primary hot legs on 2/24/82 and 2/25/82.

These pieces are currently assumed to be from the nozzle cover.