ML20041B405

From kanterella
Jump to navigation Jump to search
LER 82-002/03L-0:on 820112,reactor Core Isolation Cooling Steam Line High Flow Pressure Differential Indicating Switches PDIS2441 & 2442 Tripped at 118 & 125 Inches of Water.Caused by Instrument Drift.Switches Recalibr
ML20041B405
Person / Time
Site: Duane Arnold NextEra Energy icon.png
Issue date: 02/11/1982
From: Varner D
IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20041B398 List:
References
LER-82-002-03L, LER-82-2-3L, NUDOCS 8202230611
Download: ML20041B405 (1)


Text

1_ - . . . .i__ _ : ._ _. . . . . - _. n ._.-__. -. - - :--

u.s. NuctsAn acutATony Ceuun.ucN l NecDfau an

. p.771 LICENSEE EVENT REPORT .

CoNTaot stoCc l i

l l 1 l l l@ (PLEASE PRINT Ca TVN ALL REQulRED INFORMAT10M l

Ic 11 l@l0101 l0101ololol I

lo lil4 l9II A UCEN341 3

lo la CQCE le 15 UC& hat NuutLB lolol@lalil1!ilil@l 2$ 20 UCL%3L TYPt JJ ur 54 @ $7 CCN'T lolil i 8 2 '*,"C l60L @l068 15 !O CCCKET 10131311 10 Nyue ga M

@l01143 I l 12 ] 812 @l 0121 tvtNT DATE le 4 11 1181 Pl@

AEPCAT C ATE 40 EVENT DESCRIPTION AND PACSA8LE CCNSECUENCES h ,

lo l 211 During normal oneration while norforminq survoillanco testino. reactor c I to#3i l ore isolation coolino (RCIC) steam line hiah flow nrossure difforontial I lo I A I I indicatino switches, PDIS 7441 and 7447, trinned at 118 and 125 inches n 1 l o I s l I f water, resnectively. Technical Specification Table 3.2-8 renuiros the  !

Io le 1 I setonints to be 110 +/- 5 inchos nf mtnr pnanna,n+ ECCS systems were o I lo l 71 I perable. There have been four previous similar occurrences (see RO 77-57 I Iolai 1 , 77-93, 79-30, and 81-23). 40 I

7 8 9 SYSTE M CALSE CAUS E CCMP. VAtVf CCOE CCCE tb8CCCE COMPCNENT CCCE SUSCCCE $UgCCCE lo191 I 4 1C ! F l@ l E l@ l E l@ l I ! fl! SI Tl Rl Ill@ l Sl@ U @

9 10 le 12 13 is is 23 SE QUENT1 At CCCURAENCE REPCRT R EVIS3CN LE mino tyt%Tvtan a ttonT NC. CCCE TvPt NO.

O" ,at u =

1812! L--J Iolol2l i-1 10131 i Li i_l 10; 32

. Il 22 22 24 26 27 73 79 JQ 31 MounS 8CP 8. VANypa mEm 7 N aCT CN CNP NT vt 58 8 5 78 E

[u E !@l Z l@2 la Zl@ l:.Z l@ l 0 l 0l 0! 0l n

[fij@

lof4 l@ lIll@

u lo B i 0l 810l@ o CAUSE CESCAIPT1CN ANC CC A AECTIVE ACTICNS h i i 6 o l l Instrument drift. The switches were promotly recalibrated and tested sat i l i i i l ! isfactorily. PDIS 2441 and 2442 are flarton Model 288A pressure different 1 i, i2, 1 ial indicatino switches. A desion chance will he nurcued to replace thne 1

[TT il l e with similar switches with a smaller ranno tn roduca instromon+ drie I ii64 i I problems.  !

> a 3 eo

's A  % Powf R CTWtR STATVS as RV CisCQv tRY CE5CAiPTICN l

I i 5 I [_EJ@ l O! 8! 7!@l

' '2 "

flA "

l l" B l@l'* Surveillance Test

8 ,CTiv,rv CsTe T .

=<t Ase AuouNT C, toCATiCN C, metzAsa @

f'ITil L.],j @o es astease[J,.jgl f4A CTiviTv "

@ ll*f4A **

I

. . . C~~ t e , ,Cs " .,

w ... T .. CesC.,.7,C~ @

liI7II010Iol@lZi@l flA '*

I

,c.sc~~

o... " ~m'2 sCisC m,Tio~ @

I fiTT1., 101 nl Ot@lutm I

TNe's IT T O L 2.j @ l "C e s'CnIe7 o%

nA h I

' ' ' 'O

,y,t , ' Tv 8202230611 820211 issue ca sCaiaTroN @ PDR ADOCK 05000331 N A C US E CN LY ,

S PDR j g9,,;;;;,g,l3 LLl2JLHfOl

' ' 'O NA  ;

80 * ;

I 48 69 NAuteseaEP4aEn David M. Varner ,,cy g . 319-851-5611 I l

!