ML19210E635

LER 79-119/03L-0:on 791113,during Surveillance Procedure HPN-2-3504,average Power Range Monitor F Inoperable W/Nine Low Power Range Monitor Inputs.Caused by Setpoint Drift. Calibr Performed

ML19210E635
Person / Time
Site:	Hatch
Issue date:	11/28/1979
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19210E632	List: ML19210E631 ML19210E635
References
LER-79-119-03L, LER-79-119-3L, NUDOCS 7912050445
Download: ML19210E635 (1)

Text

NRC rOHM 3GG U, b. NUCLL AH HLGUL A*7).: < COMMISSION (7 77)

- LK ENSEE EVENT REPORT CONT ROL CLOCK: ) l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIO%

lo l 18 l9 lG l A 7

l E lI lH l 2 l@lIb0 ] 0 l 0 l 0 lLICENSE LICENSEE CODE l4 0 l 0 NUVUEH

] 0 ] 0 l C l 0 l 02bl@l;;4 l 1LICENSE [ 1 l TYPE 1 l 1JOl@lb7 CAT l ba lQ CON T

('

lOIil 7 8

$$ l Ll@l60 0]61 5l 0l 0DOCKET l 0] NUMBER 3l 6 l 6 l@l 68 1109 11 1  ! 317 l 9 l@[1 l 1 lREPORT EVENT DATE 14 '5 2 l 8DATEI 7 l 980l@

EVENT DESCRIPTION AND PROD A" .E CONSEOUENCES h 10 l 2 l l While performing surveillance procedure HNP-2-3504, APRM Instrument Functional Test l 0 3 Land calibration, it was found that APRM "F" went ino with 9 LPRM inputs instead cf l 0 4 l 10 inputs. No Tech Spec requirements were performed acause only 2 channels are ]

O s l requiced per trip channel. B & D channels were still operable. The health and l lo is I safety of the general public was not affected. This is a non-repetitive event. l O 7 i __

l O H DE CODE SUBCO E COVPONENT CODE SUBC dE SU E F5T6'1 7 8 11IDl@ W @

9 10 11 12 El@ lI13l N ] S l T l R l U18 lh 19 Yl @ ']@ 20 SEQUENTIAL OCCUR R E NCE REPORT REVISION LER EVENT YEAR HEPORT NO. CODE TYPE N O.

@ ,ntg'RQ RT

[7l9l l_l l 1l1l 9 l y l0 l 3 l 28 . 29 l Ll 30 l-l 31 l0 l 32

_ 21 21 23 24 26 27 TAKEN ACT Of ON PL NT MT HOURS S 8 IT D POR b D. S PPL1 MAN F TURER I J33E l@l34E l@ W@

35 l36Z l@ l0]0l0l0[.,lNlg:

3/ 40 41

] ]g 42 (N]

43

@ 44 Gl0]8l0 g 47 CAUbE DESCRIPTION AND CCRRECTIVE ACTIONS h i O l The cause for APRM "F" becoming inop with 9 LPRM innuts instead of 10 inputs was due l li t i l I to setpoint drift. Calibration was performed and problem was corrected. l l

li 171 l I

1i131 1 i 4 l l

7 8 9 80 STA S  % POWER OTHER STATUS DIS O RY DISCOVERY DESCRIPTION 32 l1 l b ] l El@ l 0l 9 l 4 l@l NA l l B l@l During functional test and calibration l A TlVITY CO TENT RELE ASED OF HELF ASE AMOUNT OF AC .VITY LOCATION OF RELEASE i 6 d @ LZj@l NA l l NA l PERSONNEL f XPOS ES

~uMoE n Tm DtSCnmTION @

NA li I 7 I l 01 01 OJ@l' zl@! S

' " ' PEnSON~El.'IN,Un',ES

j jQ NUYBER DESCntP TION

'T / j r} g [

CUJ l1lsll0l0]0l@]

7 8 9 13 12 NA i T 80 l

L OSS OF OR DAMAGE TO F ACIL:TY , f TYPE DESCHiPTION i 9 jZl@l NA l(~

7 8 9 10 , 80 7 o Pmi TY INlh[j CniP nON @ NA 79le050 N E l NRC USE ONLY lllllllllllllj 7 8 9 30 68 69 80 &

R. T. Nix 9 NAME OF PREPARER PHONE: $