05000364/LER-1981-041-03, /03L-0:on 810930,during Testing,Instrumentation Loop Associated w/LT-461 Found Inoperable When Comparator Card Failed to Meet Voltage Setpoint Criteria.Caused by Component Drift on Comparator Card.Card Replaced

From kanterella
(Redirected from ML20011A738)
Jump to navigation Jump to search
/03L-0:on 810930,during Testing,Instrumentation Loop Associated w/LT-461 Found Inoperable When Comparator Card Failed to Meet Voltage Setpoint Criteria.Caused by Component Drift on Comparator Card.Card Replaced
ML20011A738
Person / Time
Site: Farley 
Issue date: 10/16/1981
From: Hairston W
ALABAMA POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20011A734 List:
References
LER-81-041-03L-01, LER-81-41-3L-1, NUDOCS 8110290369
Download: ML20011A738 (1)
v • d • e


LER-1981-041, /03L-0:on 810930,during Testing,Instrumentation Loop Associated w/LT-461 Found Inoperable When Comparator Card Failed to Meet Voltage Setpoint Criteria.Caused by Component Drift on Comparator Card.Card Replaced
Event date:
Report date:
3641981041R03 - NRC Website
v • d • e

text

-

4.10.:Ws:FC::T::W6 n E.w i y'

CONTROL SLCCX: l l

l I

l I

lh (PLEASE PRINT OR TYPJ ALL REQUIRED INFORT.'JATICN1 i

3 oIti l Al L l J l M l F l 2 Ql 0 l 0 l - l 0 l0 l 0 l 0 l 0 l-l O! 0 l@l 4 l 1 l 1 [1 l1 l@l l

lg 4 3 t.CENSEE CC 14 15 UICENS E idCMC E R 41 I6 LICEleSE TYPE Jo 57 CAT ~5

[

1.

7.,*d l L @l 0 ! 5 IO l 0 !O I3 I6 I 4 hl 0 l 9 l 3I Ol 8 l 1 i@l110 l1 16 I 811 l@

3 60 il OCOKET NUMBER 4d o9 EVENT CATE 74 4

AEr80RTOATE 30 EVENT DESCRIPTICN AND PROSABLE CONSECUENCES h o 2i l At 1040 on 9/30/81, while performing FNP-2-S".'P-201. 3 (Prc.ssurizer Level LT-461 Loop f

g,;9 l Calibration and Functional Test), the instrumentation loop associated with LT-461 was j

o,aj l declared inoperable when the comparator card failed to meet the voltage setpoint criteria.;

o i 5 ! [_ Tech. Spec. 3.3.1, in part, requires the instrumentation loop to be operable. Tech. Spec.I a is i i 3.3.1 action statement requirements were met.

Health / safety of the public was not J

o 7 l affected.

l

)i3I I

}

3 9 60 SYSTE.*.I

CAUSE

CAUSE COVP.

VALye CCOE COOE SUSCODE COMPCNENT CODE SUSCO::E SUSCOCE 039j III A !h l Elh lE lh !I l Nl SI T l R l U lh l T l@ l Zl@

s 3

10 11 12 73 3

,g SEQUENTI AL CCCU R R E' ICE REFORT REVISICN msvENTYEA A RE* ORT NO.

CCCE TYPE N C.

O" =LE;;;poL8f11 l-i IOl4l1l l/l l0 I3 l l Ll l!

j 0l 21 22 23 24

S 27 23
3 30 31 32 ACTIO N FUTURE y,t g*

E SH UTOCYrN AT*ACHVENT NP CO.vP.

COMPCNENT

,C3,R,O-1 7 PIM,E,ti En

. ma 4CTicN

..a w :0

. ;ug.1..

uay
m 4

,,u g.

su M AN UF ACrun En 4'

lE @lA I@

l Z l@

l 0 I '.) l 0 l l

l Nl@

l NI@

l N l@

l WI 1 12 j0 lQ,

- o 4:

42 4:

u

.7

- g CAUSE CEEC UP' JN AND CCRRECTIVE ACTICNS t.7) s i l a i l The ever. was caused by component drift on a comparator card. The card was recalibrated l

,ii i l and following the successful completion of FNP-2-ST5'-201.3, the LT-461 instrumentation

}

,,,7; j loop was returned to service at 1234 on 9/30/81. The comparator card has subsequently

,,3, l been replaced.

l t sa!l I

J 3 80 F4CILITV D

VETHoO CF STATUS

% PC'.'tE 9 OTHEA STATUS ~

CISCOV E8Y DIS 00VERY CESC9iPTICN 3.

i s j lj@ l 11 01 Ol@l NA l

l B l@l Surveillance Test i

1

' d :v,TY

OL.N T

'2

'5

'a do 2ELEASEO OP:lELEASE AMOUNT CF ACT1V4TY LOOATION CF PELIASE is l I Zi @ I Z ih[_

NA l

l NA l

7 3 3 10 11 44 45 40

  1. EASCPeNEL E'(PCSURES NUMBEA

'YDE f i 7 l l 0l 0 l 0 !@l z lhlCESCAspTICN a

NA

{

?ER SCNt4 E L INJURI ES NUMBER OESCniPTION r 13 ! l of o f O l@l NA l

[ - ' 3 11 12 EO LCSS CF CR CAa,t4GE 'O FACILITY O) r<PE OESCAinicN Q3 l Z!h{

NA l

t,u h

D 811016 NRc LsE CNW 2 i o j l N!hlDE OAtMICN SUE S

NA 05000364 l'l!Il Iil i Il l l jl a )

o PDR 3,

,n ;

NA"E OF PRE' PARER:

W. G. Hairston, III PiONE: (205)899-51',.

-)

Retrieved from "https://kanterella.com/w/index.php?title=05000364/LER-1981-041-03,_/03L-0:on_810930,during_Testing,Instrumentation_Loop_Associated_w/LT-461_Found_Inoperable_When_Comparator_Card_Failed_to_Meet_Voltage_Setpoint_Criteria.Caused_by_Component_Drift_on_Comparator_Card.Card_Replaced&oldid=4641427"