05000321/LER-1979-102-03, /03L-0:on 791226,during Shutdown & While Performing Normal Surveillance,Hpci Steam Line Differential Pressure Switch Found at 241 Inches of Water.Caused by Instrument Drift.Instrument Recalibr

/03L-0:on 791226,during Shutdown & While Performing Normal Surveillance,Hpci Steam Line Differential Pressure Switch Found at 241 Inches of Water.Caused by Instrument Drift.Instrument Recalibr

ML20148B600
Person / Time
Site:	Hatch
Issue date:	01/17/1980
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20148B596	List: 05000321/LER-1979-102, Forwards LER 79-102/03L-0 05000321/LER-1979-102-03, /03L-0:on 791226,during Shutdown & While Performing Normal Surveillance,Hpci Steam Line Differential Pressure Switch Found at 241 Inches of Water.Caused by Instrument Drift.Instrument Recalibr
References
LER-79-102-03L-01, LER-79-102-3L-1, NUDOCS 8001220582
Download: ML20148B600 (2)

LER-1979-102, /03L-0:on 791226,during Shutdown & While Performing Normal Surveillance,Hpci Steam Line Differential Pressure Switch Found at 241 Inches of Water.Caused by Instrument Drift.Instrument Recalibr

Event date:
Report date:
3211979102R03 - NRC Website

text

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ - __

G.7/)

LICENSEE EVENT REPORT e@

1. (PLE ASE PRINT OH TYPE ALL RLOUlrIED INFORf

• ATIO?J) coa.T,5L c: 00:: j l

l

\\

\\

\\

l

{~][GlAIEIIlU!1 l@l 0 l 0 l 0 l 0 l 01010 l 0 l 0 l 0 l 0 l@[ 4 l 1 L1 l_2J_]JGl_ LJ (D tectow 1at uu '.: t r..m.. a n

s.s t

.a [UI1j 2.N l L h)[ O_] 5 ! 0 l 0 l 0 l 3 l 2 l1 j@l1 l 2l 2 l 6_[,7 l 9 l@l Ol 1l Il 7l 81 0 }@

c :.:,

n

, m,c

. iou, oenOUA C t l fJCl4 the HPCI steam line di f fer-J ey l Daring shutdown and while perfornintnormal surveillance, r

. g [ential prersure switch was found at 241 in. H > 0.

This exceeds the Technical Specifi-l

[-] ] [catiou le ', " 2 Item 11 of less than or eqtp1 to 216 In. H2O plus a head correctin.nj There were no effects upon public hens tb or mJotv.

Thir ir n re pe t i- ;

[7" -- [c[21 y, 7 7n oc orrer ar last reported on LL'. 50-32]/1978-52.

J

[..I I. _..

6 l

.' J C O"."'.

VALVE C AU;F C L'.. E C'

C(.q q Mlacout co".mDN F r.1 CODE SUh CODL SLE>rOJE 2.

1 9 Ix IR Iz IR I z l z ! z i z ! z ! z i@ I z i@ I z l @-

(_c i n

m

~

i' '

,P ' O f-r i /. i li i

? i 5 "[

p[;CRT r

i og, i

(r iv0E

(.,

! t i. 9 ll l 1 j O! 2!

lgj [0 i 3 i hj l-l l0l

( Or Ar,L N T P O *;

AM t.or t*

• T ' 1 I,0f tD 4 PH t Yi CO* ' '

byA sur

.ita r oP c au;.

u : L it,

'r,,.

r t

s r

t ra t.,ze tf o n.i uJe L1ue l u ie ui n Lue n ' f i. ;'.

('.,

.L

...N, HpCl El c:10 l,in t D i.f f r r Cli t i al P r ej re Switch, failed tr rperato l

i

..' I "I"'... ygause o f in s t rum p tLd_r_1 f ti.

The instrument was regOlls;_,i _

b

~

ticc w fully run.

L

'i l__ci L

i I

.__2_

~_______.s

l h>1.dv v t II t i. s ' '. t. rs i :

r f lOf.

-/

C.

i f t t P.T / T t suryt 1. lance Tent

. '.. j [M b." i "1

. ti^

l LP.>.J@l i

i:

4.t

.t o 4,

1 LOC Allo J OF HE L.E ASE I: Lt M t D OF l El i A AM AtsrOFACTWnTY l

NA l

l NA EE]1zO BBL s.

e 9 m

n o

e l

=J tlA m.- O 90028057

_j

[._ l / ] \\ 0 l o l chl zl@l NA r..

i n 9 u

n sa P( P'.ONY t 6*!.I.d ' ' f. E f

1. ' I 1; I'.* B f H Df: H PTION

_]

D l, } [,0 1 0 l 0 @ l NA r

b !!

Il li L O'J'. OF OH OtW AGE 7 O l ACtllTY l

tiri D L M.4 t rl lO N l1 l :- l [z_ J@ul NA 7

t; 3

to NHC USE ONL Y runti;in 4

l_ ' I e } ['jjg_ v!rCHiFilDN NA l

llllll((lllll v.9:E n bil t. 9 t

P a4 np ct m emiimtn. R. T. Nix - Supt. of Maint.

912-367-7781 p %,g 8 0012 2 0 Q2

s NARRATlVE REPORT pn Georgia Power Company Plant E.

1. llatch 7y^<kIgh{.'Baxley, Georgia 31513

- vid

' ?'$#Reportabic Occurrence Repo rt No. 50- 321/1910- 102 I,f,fbh$L During cold shutdown and while perf orming, llNP-1-3307, llPCI Steam Line Di f fe rential P rennure inn t rume n t l'un ct ional Teor and Cali brat i on, Ins t run.ent IE41-N004, llPCI Steara Line Dif ferential Presrure Switch, was found to be out of tolerance. The switch was found at 241 in. H 0.

The expected setpoint j

is 226 I 6 in,11i0.

'1 h i s execeds Technical SpecificatJons Table 3.2-2, I t era 11, which states that the t rip sett ing should be less than 216 in.110.

This is 2

a repetitive occurrence.

The switch was ret alibrated per ILNP-1-5202, Barton Model 28SA and 289A Dif ferential Indicat ing Swi tch, and t he surveillant e procedure was pe r f o rr..e d natis f actorily.

This type of inr:t rn:a nt is ut illard in other nvs t e:

on bot h un it 3 hnt no gen. ric prob l en have been discovered.t thi< t i tne,

l u ven t i r,a t i on e, are continuing to t ry an d dc t o nnine the cauw o f ::c t. poi n t drift.

A follow-up report will be :ubmi t t ed.

v.

. y.

n-a m.w

.. 4ce e,N, s

-( %n. o :cv e

is w,ik.I, p' g. m I$1 I

w 4

+..M

&~ M,,-

900280.28

^-Q>

$ 9 w

'4 Sl q -

m e

0 h

q-

'->rn 4'

%gd

< y

.'-p A h

A n ' %m(i }.rp -CA

!~ W '

4,

- w++we-

---o.,were.w