05000325/LER-1982-134-03, /03L-0:on 821201,primary Containment Atmosphere Oxygen analyzer,1-CAC-AT-1263-2,indicated Step Increase in Drywell Oxygen Concentration.Caused by 1262-2 Analyzer Experiencing Instrument Zero Shift.Analyzer Recalibr

From kanterella
(Redirected from ML20028C217)
Jump to navigation Jump to search
/03L-0:on 821201,primary Containment Atmosphere Oxygen analyzer,1-CAC-AT-1263-2,indicated Step Increase in Drywell Oxygen Concentration.Caused by 1262-2 Analyzer Experiencing Instrument Zero Shift.Analyzer Recalibr
ML20028C217
Person / Time
Site: Brunswick 
Issue date: 12/30/1982
From: Pastva M
CAROLINA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20028C212 List:
References
LER-82-134-03L, LER-82-134-3L, NUDOCS 8301070216
Download: ML20028C217 (1)


LER-1982-134, /03L-0:on 821201,primary Containment Atmosphere Oxygen analyzer,1-CAC-AT-1263-2,indicated Step Increase in Drywell Oxygen Concentration.Caused by 1262-2 Analyzer Experiencing Instrument Zero Shift.Analyzer Recalibr
Event date:
Report date:
3251982134R03 - NRC Website

text

, ~ - ~

N ;C rOH,M 366 U.S. NUCLEC2 REGULAT;RY COMMISS8' Q.11)

LICENSEE EVENT REPORT CONTROL 8LOCX: l l ))

l l

lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMAh0N) jo l1l N l "l B l E l P l 1j@l 0 l 0 l - l 0 l 0 l 0 l 0 l 0 l-l 0 l 0 l@l 4 l1 l1 l1 l 1 l@l l

l@

3 9 UCE. SEE CODE i4 15 LICENiE NUMBEH 2D 26 LICENSE TYPE JU S 7 C A T 58 coy r -

l0l: I

$SRSlLl@l 0 l 5 l 0 l - l 0 l 3 l 2 l 5 @l 1 l 210 l1 l 8 l 2 @l 1l 2l 3l 0l 8l 2lg 7

4 60 61 DOCKET NUMBER 68 69 EVE *iT DATE 74 75 REPORT DATE 80 tiVEN1 CEM RIPTION AND PROB ABLE CONSEQUENCES h I o l 2 l l Routine surveillance during plant operation revealed that primary containment l

WO Lutm sphere oxygen analyzer, 1-CAC-AT-1263-2, indicated an unexpected step increase l

[t,g4ll(2.5-4.1%) in drywell oxygea concentration. At the time, redundant instrument, l

lp[5g } -CAC-AT-1259-2, was inoperable due to downward indication trending and is being l

[o p g [ reported.in LER l-82-126.

This event did not affect the health and safety of the l

[ o l fl l pu'alie.

l Technical Specifications 3.3.5.3, 3.6.6.4, 6.9.1.9b l

80 SYS T E M CAU!F

CAUSE

COMP.

VALVE CODL CODE SURCODE COMPONENT CODE SU8 CODE SUBCODE lnjgj [S l L j@- ]@ y@ l Il Nl Sl Tl Rl Uj@ g@ ]@

7 s

9 10 11 12 13 18 19 20 SLOUENTI AL CCCUR rte NCE REPORT REVISION

_E'. E N T YE AR RE PORT NO.

CODE TYPE NO.

g gg pg O gg. I 81 2l

[__j l li 3l 4l l-l j 0l 3 l ihi

[_j

[ 0j

_ 21 22 23 24 26 27 28 29 30 31 32 A EP ACTIOP ON Pt A T H

HOUHS S B 'TD FOR b B.

SUPPLIE MAN FACTURER W@[CJ@

( Z l@

y@

l0 10 l0 l0 l lNj@

y@

lN_j@

l Bl 1l 3l 5l@

33 34 J5 30 3/

40 41 42 43 44 47 CAtISE DESCRIPT!ON AND CORMECTIV E ACTIONS h [Y{Til [Ihe 1263-2 analyzer had experienced an instrument zero shift resulting in erroneous 1

[1 [ i j i indication step increase.

The analyzer was recalibrated and returned to service. Duel [il7{jto a history of similar events; these type CAC analyzers, Model No. F3M3 are being l

Qig l replaced an per an approved plant modification.

l I

L' I 4 I I 80 7

8 9 STA

% POWER OTHER STA TUS DSO RY DISCOVERY DESCR!PTiON

@] W@ l0 l 6 l 7 l@l NA l

l Al@l Operator Surveillance l

12 n

44 4s 46 80

' driviTY c0EENT 4

PE L E ASED Of RFLfRSE AMOUNT OF ACTIVITY LOCATION OF RELEASE NA l

l NA l

[IE [Zj @ lZ l@l 7

H 9 IU 11 44 45 80 PERSONNE L E XPOSURES NUV% R TYPE D E SC RIP ! ;0N NA l

W j lO!0l0l@ g @l PmmNd%ULs NUYM H

DESCRIPTION

NA l

l0l0l0l@l i a 8

UCSS OF OH DSAGE TO FACIUTY 8301070216 821230 4 p' nvE ntsCniPiiON PDR ADOCK 05000325 S

PDR l

[dd (_Zj@l 7

8 9 10 80 8

e, s.i t t E CHtPitON I2blINf@l NA l

llllllllll lll,;

7 8 9 10 68 69 80 5 N AME OF PHEPARER PHONE: