05000219/LER-1981-011-03, /03L-0:on 810309,isolation Condenser Condensate Return Line Pipe Break Sensor IB11B2 Found to Trip at Value Greater than That Specified in Tech Specs.Caused by Instrument Repeatability.Replacement Recommended

From kanterella
(Redirected from ML20003E883)
Jump to navigation Jump to search
/03L-0:on 810309,isolation Condenser Condensate Return Line Pipe Break Sensor IB11B2 Found to Trip at Value Greater than That Specified in Tech Specs.Caused by Instrument Repeatability.Replacement Recommended
ML20003E883
Person / Time
Site: Oyster Creek
Issue date: 04/08/1981
From: Fitzgerald M
JERSEY CENTRAL POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20003E878 List:
References
LER-81-011-03L, LER-81-11-3L, NUDOCS 8104170437
Download: ML20003E883 (1)


LER-1981-011, /03L-0:on 810309,isolation Condenser Condensate Return Line Pipe Break Sensor IB11B2 Found to Trip at Value Greater than That Specified in Tech Specs.Caused by Instrument Repeatability.Replacement Recommended
Event date:
Report date:
2191981011R03 - NRC Website

text

N:C Fox e :6s u.

17.T7 LICENSEE EVENT REPORT CC?.TAGL BLCCK: l l

l l

l l

l IPLEASE #CINT CA TYPE ALL REQUIRED INFO %MATION) i e

p l Nj Jj Ol Cl Pl 1lg 0j 0l -l 0l 0l 0l 0l 0l -l 0l 0l@l 4 l 1l ll ll 1l@l l

lg F

8 7 L;;Ef45EE COGE

's 15 LICENSE NuMSER 2*

.6 LICENSE Tv9E 40 M G T 64 CON'T folil

"')," l L}@l015 10 10 10 l2 11 19 l@l0 l31Ol9lBlll@l014 10 1818 l 1l@

c 7

8 60 61 DOCK ET NUMs gm 68 63 EVENT CAfg 74 7S REPCRT Q ATE SQ EVEN f DES,CRIPTION ANO PRCBASLE CONSEQUENCES h t c I:l l During surveillance testing, the Isolation Condenser Condensate retirn l

Io iai l line pipe break sensor IBilB2 was found to trip at 28.5"H;O AP, which is

_l [o;4i l greater than the limit of 17.0 given in Table 3.1.1 of the Tech Snam.

I 2

l o ; s ; ; During normal plant operation the condensers a e in standbv and the con-I ic ee ; 6 densate return lines are isolated by closed valves. Durinc mndaner I

3 ;-; ; operation the steam line pipe break sensor in the same channel would

.I

[ have actuated within specs to isolate the condenser as required.

l i o !1 :

s:

E,

SYSTEM

CAUSE

CALSE CovP.

vaLvt

n:
E sus:::t
w:NENT :::E sus:::t sus:::t la!?!

l Ci Ej@ l El@ l E l@ lI lN lS lT lR lU l@ U@ l zl@

r 3

13 11 12 10 18 19 20 siOL E N Ti A L OC:UARENCE mE*0RT

  • EVIS30N L18 20 EVENTv84e A tacmT NO.

000E TYPE No.

@ysg,7 l8]1l l_{

l 0l ll ll l/]

l0 l3 l lLl l-l l0 l

_a a

u 2

2.

7
s
2 20 v

22 N'EN '87Y!'

cES.idT

'ON%cT' cuas @ 's5s'OirY!E *Ea$"iS e **7a' LYE 7 ufNu"s2Sr'UIva s

lEl@lCl@

lzl@

[Zj@

l0 l0 l0 l0 l [X,J@

lv l@

LtJ@

lI!210l4ig

=

2 2,

u v

n n

n u

.7 CAUSE DESCPl8TICN AND COA AECTIVE ACTIONS 1iloll The cause is attributed to instrument repeatability. The switch was I

g ; adjusted to trip within the limit of 127.0"H >O AP.

Due to frectuent

,,,,,; cases of instrument repeatability concerning these snap-action switches, f

,,,.,, l the POPC has recxmmended their replacement with a more suitable cauali-I it i4i [ fied nodel.

l 80 7

3 9 ST 5

%PCWER OTHER STATUS Dis AV CISCCvtRY 3Es RiPTION NA j

d @l Surveillance Test l

Ii 15 l l El@ l 0 l 7 l 5 l@l

,!nviTv cd2 TENT aucuNT e, activity @ l tee,TioNc,ELEAst@

l i I s l I z l @s e,.EuistLz_J@l atu.sE l

NA l

NA 7

5 3 10 11 44 45 80

'ERsONNEL EXPCSURES NLUSEA TYPE OES:PIPTICN l

li l 71 101 o f O l@Lz_J@l NA m,o.cNNEL imu'Its=Esca, Tion @

,E s E.

l riT'l l 01 o f ol@l NA 33 7

8 9 11 12 Loss Os CA OAvaGE TQ FA iLiTY TYP1 OESC A1871CN l

l i l 91 1 z l@l NA ac 7

e v to ovaticifv N AC USE ONLY 1: I o l LYJ81 Weekly News polanen l llI!IlIIi1!<l:1 issuto D E SC A *T N

  1. 5 4'104'l70337 Michael J. Fitzgerald (609) 693-6038

{

escNE:

NAvsos.as AnEn