05000324/LER-1980-121-03, /03L-0:on 801229,reactor Level Instrument 2-B21-LI-R604A Found Not Tracking Properly to Decreasing Reactor Level.Caused by Instrument Level Transmitter 2-B21-LT-N026A Drift Out of Calibr.Transmitter Recalibr

From kanterella
Revision as of 18:06, 24 December 2024 by StriderTol (talk | contribs) (StriderTol Bot insert)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
/03L-0:on 801229,reactor Level Instrument 2-B21-LI-R604A Found Not Tracking Properly to Decreasing Reactor Level.Caused by Instrument Level Transmitter 2-B21-LT-N026A Drift Out of Calibr.Transmitter Recalibr
ML19341B506
Person / Time
Site: Brunswick 
Issue date: 01/27/1981
From: Pastva M
CAROLINA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19341B505 List:
References
LER-80-121-03L, LER-80-121-3L, NUDOCS 8102020398
Download: ML19341B506 (1)


LER-1980-121, /03L-0:on 801229,reactor Level Instrument 2-B21-LI-R604A Found Not Tracking Properly to Decreasing Reactor Level.Caused by Instrument Level Transmitter 2-B21-LT-N026A Drift Out of Calibr.Transmitter Recalibr
Event date:
Report date:
3241980121R03 - NRC Website

text

.

l 4

n.m CONTROL BLOCK: l l

l l

l l

l

( LEAS PI T OR TYPE Alt AEQUIRED INFORMATION)

Io IiI I n I C l B l E l P l 2 l@l 0 l 0 l - l 0 l 0 l 0 l 0 l 0 l-l 0 l 0 l@l All l 1l 1l 1l@l l

l@

7 8 9 LitENSEE CQgE 14 tb LICEr4E NuVdEH 45 26 LICEreSE T v rE JG b, L A I Sd CON'T L21J 50"J LIJ@l o f s I o l - 10131214IGit: 21219 l a 10 l@l0111217 l a 11 l@

7 8

tsQ 61 DQLit ET r.gveEM 6J GJ EVENT DATE 14 7'J REPORT DAT E BJ EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h joj2l l Following a reactor scram, reactor icvel instrument. 2-B21-T.I-R604A, did not track l

I o l a J l properly to decreasing reactor level. All other level indications responded properly l

oj ;lto changes in reactor level. This event did nct affect the health or safety of the 1

i InisJlpublic.

l 10101!

M l

I [0l?j l l0{w] [ Q Technical Specif1 cations 3.3.5.3. 6.9.1.95 l

80 gD 7

8

'J SYSTEM

CAUSE

CAUSE COVP VALVE l

CCOE CODE SUSC00E COMPONENT CODE SUSCOOE SUSCOOF loI91 i i I e l@ I n l@ LzlO I il Nl si Ti al ul@ l T I@ Lz_l @

7 8

9 10 tt 12 13 14 19 20 SEQUE N TI AL OCCURRENCE REPORT REVISION EVENT YE AR REPORT NO, CooE TYPE NO.

O,a;E R HQI si of I-I I il 21 il 1/l I 013 I ILi l-l I 01 L.gr 26 22 23 24 du 21 2d J'd 3J J1 J2 A

f A

G' C PL NT HOURS 5e FOR 9 U8.

5 PLIE MAN AC URER l E lglJ4 C[@

lgg lJb Zl@

l0 l 0j 0l 0l lNl@

l Yl@

l N]@

l Yl 0l 1l 0l@

JJ J3 J

40 41 42 43 44 47 CAUSE DESCRIPTION ANO COAnECTIVE ACTIONS h l i j u l l The gain setting on the instrument level transmitter, 2-B21-LT-NO26A, drifted out of l

4 i,ji;; calibration. The transmitter was then recalibrated and returned to noTnal operation. ]

A check of the other similar icvel transmitters on both units did not reveal any l

,,,., j j l problem',.

These type transmitters will be replaced with more reliable instrumentation l

,,,i;during a future outage.

l 80 7

8 9 57 f 3

% POWER oTHE R ST ATUS D65 0 Av DtSCOVERY DESCniPTION lt l S I l D j@ l 0l 0l0 l@l NA l l A.j@l Operator Surveillance l

I ACitv1TV CD Test l

l s ELEASED OF 54ELEME AMOUNT oF ACTIVITY LoCAfs0N CF PELEASE l: l6l lZ l

NA l

[

NA l

i e

'J 10 11 44 4b 60

  1. f ASONNEL EurosunES NuoA r n Tv8f D E SC Hi* TION IiF4IO!OIol@lZl@l NA l

,Easosf'iNmus oEscn'aiios@

s u.'u n Ii I : l 1010101@l NA l,*

80 p

9

'J tt it L 0% UF mi O AVAr.E f o # ACIL t TV t ) *r E hi sc uip t ion NA l

LzJ@l i >

GO a 9 10 I e I o f L,lij@ESn erio~O iv.lE'"

8102020 % g l '.l.> l l l ] l l l l [ ] l.ol.J i

l NA

.. a t o

a m

M. J. Pastva, Jr.

pggg g;_,,,,919-4 57-9 5 21 g'

Nave or enceanco