05000237/LER-1981-038-03, /03L-0:on 810609,vacuum Breaker Found Binding During Suppression Chamber to Drywell Vacuum Breaker Operability Test.Caused by Improper Clearance on Shaft Seals.Seals Adjusted

/03L-0:on 810609,vacuum Breaker Found Binding During Suppression Chamber to Drywell Vacuum Breaker Operability Test.Caused by Improper Clearance on Shaft Seals.Seals Adjusted

ML20009B945
Person / Time
Site:	Dresden
Issue date:	07/07/1981
From:	Zirwas K COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20009B941	List: 05000237/LER-1981-038, Forwards LER 81-038/03L-0 05000237/LER-1981-038-03, /03L-0:on 810609,vacuum Breaker Found Binding During Suppression Chamber to Drywell Vacuum Breaker Operability Test.Caused by Improper Clearance on Shaft Seals.Seals Adjusted
References
LER-81-038-03L, LER-81-38-3L, NUDOCS 8107200058
Download: ML20009B945 (2)

LER-1981-038, /03L-0:on 810609,vacuum Breaker Found Binding During Suppression Chamber to Drywell Vacuum Breaker Operability Test.Caused by Improper Clearance on Shaft Seals.Seals Adjusted

Event date:
Report date:
2371981038R03 - NRC Website

text

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.LLS. NUCLEAR REGULATORY COMMISS!!N _ _.

LICENSEE EVENT REPORT CONTMOL BLOCK: l l

l l

l l

lh (PLEASE PRINT OR TYPF ?

• 1. REQUIRED INFORMATION) 1 6

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60 61 QQCKET NUMBER 68 69 EVENT DATE 74 s

REPORT DATE SO EVENT DESCRIPTION AND PROBABLE CONSECUENCES h

- l Durine s,m m esi~, chamber to drvweil vacuum breaker coerability test < DOS 1600 0 I

l vacuum breaker 2-1601-32C was found binding.

It was chained closed oer T.S.

3.7.A.4.bj

,l Public health and safety was not jeopardized since 2-1601-32C was closed prior to l

l surveillance, and 11 of the 12 vacuum breakers were still Operable (9 required). Last l l previous event:

R.O. 50-237/79-64.

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0E OE SL C E COMPONENT CODE SUS ODE SU 00E l Sj Al@ lE l@ l5 l@ l V l Al L lV lE lX l@ l Cl@ l Cl@

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to 11 12 13 18 19 20 SEQUENTtAL OCCURRENCE REPORT REVISION EVENT YEAR REPORT NO.

CODE TYPE N O.

l @ lLER/RO l218 l1 l l-l l 013l 8l lA 10 l 3 l ltl l-l l0l

,gg 22 23 24 25 27 28 29 30 31 32 N

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42 43 44 47-CAUSE DESCRIPTION AND CORRECTIVE ACTICNS h l The cause of the binding was imoroper clearance on the shaft seals. The seals were I

l adjusted and tested satisfactorilv. DOS-1600-9 will continue to be run monthlv.

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% POWER OTHERSTATUS Ot RY DISCOVERY CESCRIPTION llE l@ l 0 l 4 l 5 l@l N/A l

lBl@l Routine Surveillance I

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ll9Zl 10 11 44 46 80 i

PEASONNEL EXPOSURES CESCRIPTTON NUM8EA TYPE @l l

N/A l

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,eRSON~.Nu'Ri ES l

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l ll0l0l0l@l N/A 80 I9 11 12 l LCSS OF On OAMAGE To FACIUTY 43

' TYTE @lDESCRi> TION lZ l N/A l__

PususTY 8107200058 810708 NRC USE ONLY 45 PDR ADOCK 05000237 t

l 1SSgo@lOESCRIPTtON PDR l

III!IIIIIIIIII l

l N/A S

I 68 69 80 5 9

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K. Zirvas 942-2920 Ext. 422 0

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DEVIATION REPORT s

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y DVR NO.

1 Commonwealth Edison STA UNif YEAR N O.

D 2 62 OCCU RRED past il TI TLE OF DEVI ATION A/9/81 1-047e

- TIJ' t'~

Tscuum Breaker 1601-32C Binding T E511NG SYSTEM AFFECTED 1600

PLANT CONDITIONS

C Primary Containment Run 1150.6 318.9 MODE PwR(vwT)

, LOAD (MWE)

YES NO DESCPIPTION OF EVENT DOS 1600-9, vacuum breaker i

suopression chamber to drvrell vacuum breaker -perability test u 2g _ ng

2-1601-32C was binding. Checked shaft seals, grrased, no change.

DESCRIPTION OF CAUSE

. Unknown 6~THER APPLICABLE INFORMATION

~

Vacuum breaker chained closed.

EQUlrMENT C YES DR NO.

WR NO.

R. Weidner 6/9/81 FAILU RE C NO N/A 14115 eEspONsiste suprevisOR OATE PART 2 l OPERATING ENGINEERS CCMMENTS Tha remaining vacuum breakers were operable. The vacuum breaker will be repaired during the ntxt unit outage.

SAFETY-TYPE OF CEVIATION EVENT OF POTENTIAL TECH SPEC NON-REPCRTABLE ANNUAL RELATED REPORTABLE CCCURRENCE PUBLIC INTEREST VICLATION CCCURRENCE REPCRTING WR ISSUED YES ]

YES 10CFR2f 14 DAY NO NO AT' N 30 CAY NO{I FI REPORTABLE CCCURRENCE ACTION ITEM NO.

PROMPT ON-SI TE NOTI FI CATION 6/15/81 0930 NUMBER R. M. Ragan j

TITLE DATE TIME

'eot 81-38/03L-0 TITLE CATE TIME 24-HOUR NRC NOTIFICATION (Courtesy)

PROMPT OFF-SITE NOTIFICATION b

TPH Mike Jordan 6/9/81 S 1200 hrs F. A. Palmer 6/15/81 11:38 REGION lil CATE TIME TITLE DATE TIME L

TGM REGION lli & COL-CATE TIME TITLE CATE TIME RESPONSI BLE COMP ANY OFFI CER INFORMED OF 10CFR21 JATE IsMt TITLE CONDIT'ONS AND THEIA DEDO AT TO N PC

. John Wuici22 6/12/81 REVI EW AND COMPLETED OPER AT !NG ENG NEtH DATE CP BY STATION REVIEW gg gg{

7 I

7'7'UA DATE

/724-4,

RESOLUTION APPROVED AND AUTHORI ZED FOR DI STRI BUTION

/ITATION SUP INTENCENT CATE 86*S17' t0*??

( FO Res 15**2**)

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