ML19259C127

LER 79-034/03L-0 on 790510:while Performing PT 20.3,primary Containment Isolation Valve Local Leak Rate Test Containment Isolation Valves Would Not Seat & Hold Pressure.Caused by Valve Bushing Wear.Valves Dissassembled & Bushings Replaced

ML19259C127
Person / Time
Site:	Brunswick
Issue date:	06/08/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19259C123	List: ML19259C122 ML19259C127
References
LER-79-034-03L-01, LER-79-34-3L-1, NUDOCS 7906120388
Download: ML19259C127 (1)

Text

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3 LICENSEE EVENT REPORT CONTROL DLOCK: l i

l l ] l_ d _j 6 h (T LEASE FRINT OR IYF E At t REQUIRED INFORMATIONI

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$ 1 C A T 58 l@

Ll0 NSEE CODE 15 1 W E '.3 E T Y PF.

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' 8 t,U 61 DOCK E T " 'WE E R 68 fa EVENT DATE n1 > DATE EVENT DESCRIPTION AND PROBABL E CMSEQUENCES h o 2 l While performing normal operator surveillance on the control. panel. it was nOted thatI

o a the drywell equipment drain recorder was drivinn downscale,_an_d the integrator was o 4 l inoperative. __ _ _ _ _ _

l Io s l Technical Specifications 3_.4.3.1 and 6.9.1.9b _

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0 8 l .___._ . . _ . ___ .

B 9 80 SYSTENT C AU! E C A'. tSE W' U'. VALVE CODE CODE ' M ODE COYPONEN T CODE .rc005 SUUCODE lg 8

lCl 1] @ [E j($ [Ej @ l I l N SlTlR U lh W(h Zlh 9 10 11 17 13 1i IJ 20

_ SEQUENTI AL OCCUHlif 'd t DErnH T REVISluf LER EVENT YE AR ,

UEPOR T NO. CODE l'IE P. O.

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[7 19 l 22

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26 27

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[--j 31 l0l 32 ACTION FUTURE EFFECT " . t ; 0 i'4 -

ATT ACHVE NT

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. O f U Y E CO'.1P, COYPO'J r *J T TAKEN AC TION ON PLANT *

• E l + !:)O HOURS SuuVlTTED F OW ',t 'ti SUPP LI E H P.1 ANUF ACT U RE H L^J@l JJ 34 l@ Iz l@

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A o ol ol I 41 Nlg [Njg lNlQ Gl0l8 0l@

3/ 40 ty 43 44 47 CAUSE DESCRIPTION AND CORREC if VE AC T!ONS h li o l The recorder motor drive amplifier transistor failed, and the flow transmitter elec ,_j ji i l trical zero shifted from 10.0 ma to 9.4 ma. The transistor _was replaced, the flow I j transmitter calibrated, and a loop calibration was performed. The system was returned

,,3 l to service in a satisfactory condition. Thi', is considered an isolated incident. 1 iI 4 k _. . . . _

1 8 9 gg F ACILITY ME THOO OF STATUS ~. POW E R of.T4*;TarUS DISCOV E H Y E ' UM itY D(SCHIPTION 32 i 5 l E l@ l 0l 9 j 8l@l NA l l A l@l Operator St'rveillance l 00 ACTIVITY CO TENT HE LE ASE D OF REl.E ASE ,WO U' ' 0 5 ^ 1' c i T Y l' n t 'O*J OF RE L E ASE i c NA I I NA 8 9 Lz_J @10I zi@l 11 44 45 ga l

PERSONNE L f XPOSURES NU'3BER DE SCRIP T * : sk3 i i 10 0l0l@lTYPE l

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PERSONNa'IN;ues NUURE P ()E SC RIP TION i 8 M 9 1o101o181 12 NA _

2284 282 i 11 80 LOSS OF 09 DAMAGE TO F ACILITY TYPE D E SC RIP TION 7QQQlQQ i 9 8 9 W@l 10 NA 80 155UEt DESCRIP TION .

8 9 to r, R r> 9 80 ;;

wr nr nHrne.nr n A. C. Tollison, Jr. m ,, . . n 919-457-6701  ?