ML19208A528

LER 79-099/03L-0:on 790829,while Performing HPCI Turbine Exhaust Diaphragm Pressure Switch Functional Test,Instrument 2E41-N012C Failed to Hold Pressure.Instruments 2E41-N012 a, B & D Were Inoperable.Caused by Switch Diaphragm Crack

ML19208A528
Person / Time
Site:	Hatch
Issue date:	09/07/1979
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19208A524	List: ML19208A523 ML19208A528
References
LER-79-099-03L, LER-79-99-3L, NUDOCS 7909140474
Download: ML19208A528 (1)

Text

"(7 771 '

5 I

LICENSEE EVENT REPORT f couTnot OLotK: l l

} l l l l l@

6 (PLEASE PRifJT On TYPE ALL REQUIRED IfJFORMATIOf4)

I l l WlGlA l E l I l11 l 2 l@lLO l 0l 0 uw.sEE Co:E i4 is l 0 l O ! 0 l 0 l 0 l 02>l 0sl@luCu.3t

uCENst r.vv Es 4! Il llTvrE lI 1]@l sa si car so @

7

}s e t T i

0 i 8

3[nCE 60 l L l@l 015 61 l010 l0 13 l6 l6 DOLF.E T NJYBE R ta 63 l@l0]812l917l9!@l01910l7l7 EVENT D ATE 34 ib REFORT OAIE l9 63 h i EVENT DESCnlPTIOrJ AND PRODACLE CONSECUErjCES h lo12l l While performing routine surveillance precedure HNP-2-3309, HPCI Turbine Exhaust ]

j o ;3] l Diaphragm Pressure Switch Functional Test and Calibration , instrument 2E41-N0!2C ]

1014 l l f ailed to hold pressure. Instruments 2E41-N012 A, B, and D vere operable. There I lo isl l was no affect en the environs. There have been no similar occurrences reported l DRT] l previously. I o 7 l I

f olol ! I 7 8 9 80 SYST E M CAUSF CAUSE . COMP. valve CCDE CCDE SUSCCDE CCMPONENT CCDE susCOOE suscCOE lol9]8 '[ S lF l@ l El@ l E l@ lI lN IS lT lR lU lh l S l@ l Z2J l @

9 10 11 12 13 15 19 7

SE QU E NTI AL OCCURRENCE REFCRT REVISION

• ,_ EVENT YE A R tgm po R EPORT N O. CODE TYPE _

N O, h aEg u

_ l217l9l 22 l-l 2J l0l9l9J 24 26 M

27 10 13 l 28 29 lL l 3CL l-l 31

[ 0_j 32 TA rI s h C CN LA T ET O HOvns 5 E iT E ra LB. S P L! E mar CT rER l A l@[Z_j@ l35Z l@ Zl@ l 010 l 0 l 0 l lN l@ lN l@ N l@ lB l0 l6 l947l@

33 M 3 31 40 46 42 43 44 CAUSE DESCRIPTICN AND CORRECTIVE ACTIONS h ijo l A crack was discovered in the diaphragm of the switch. The instrument was replaced. l li j i j and the .new swit ch calibrated per llNP-2-5279. The other turbine exhaust switches ]

l (2E41-N012A, B and D) were checked and were able to hold pressure. l l i l 31 I l 12 14] I l 7 8 9 . 80 STA S *6 POWER OTHE R STATUS DISCO RY ,

015COVERY DESCRIPTICN NA Routine Surveillance

[ U s] l E @ l0l6l9l@l

' ' i2 n 44 l lB[@l 43 <s s3 l

As viTY Co' TENT Rett AsEo er mELE AsE EOCATION OF PELE ASE @

li 161 7 8 9 l Z 1 @ toLLi@l it mount NA or ACTiviTv 44 l

es

@l NA O O 53 l

PER50P.NEL E xPCSU A E$ s s D D NVPM E R

• NA I CO l i l 78 l9 l 0 l 0 lt10 !@ 7 TYPE @l DESCRIPTION O l

7 12 13 D

T 60 PlHSOME L INJuniES i NUUDER C E SCRiPTION k 3

[i l se 9ll0 010l@ln: NA O _ s _ JL. a l u ,, so

'51 ' Ts2#1 '* '"" @

T 7 9 0914 0T7Y' 'Hg~ ()p' g' p' ft l9 W@

7 b 'J 10 NA E0 l

l'. $ t,l t _

- 8 I ' l o l Dij@UESCHIPTIQ'd j NA l ll ll1lll1Ill l ;,

e 4 .a iu c ri v; v3 ;

R. T. Nix NAME OF PnEP AnEn PuoNE $