05000302/LER-1980-035-03, /03L-0:on 800816,during Startup operation,post- Accident Monitoring Instrumentation Found Inoperable.Caused by Instrument Drift.Instrumentation Recalibr & Verified Operable

/03L-0:on 800816,during Startup operation,post- Accident Monitoring Instrumentation Found Inoperable.Caused by Instrument Drift.Instrumentation Recalibr & Verified Operable

ML19344F449
Person / Time
Site:	Crystal River
Issue date:	09/08/1980
From:	Lancaster K FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19344F446	List: 05000302/LER-1980-035, Forwards LER 80-035/03L-0 05000302/LER-1980-035-03, /03L-0:on 800816,during Startup operation,post- Accident Monitoring Instrumentation Found Inoperable.Caused by Instrument Drift.Instrumentation Recalibr & Verified Operable
References
LER-80-035-03L, LER-80-35-3L, NUDOCS 8009150282
Download: ML19344F449 (2)

LER-1980-035, /03L-0:on 800816,during Startup operation,post- Accident Monitoring Instrumentation Found Inoperable.Caused by Instrument Drift.Instrumentation Recalibr & Verified Operable

Event date:
Report date:
3021980035R03 - NRC Website

text

'

e nac ponw ans b,

cm u. s. NuctaA2 ca!utArc:V cowusssicN

• LICENSEE EVENT REPORT EXHIBIT A ecurnot steco t l

l l

l l

g,t:Asa psiur ca tv,e att accuingo iwenu4nes:

[6TG lFl Ll q R) P13 lgl 0 i 01-l 0 ; 0l 0 l 0l 0 [

g0 ; O lgl 4 [ 1,1 l l 1(g[

g gg s.Cau u ::.

a msu won.

a a

v u,u r...

.i

., -a cMT 3[*C,y l L @l 0 I 510 l -10 I 31012 gi 0 I 81 1161 810 @l 0 I 9 i Ol 8' 8 I O l@

l=eij

.2

C.or w..u.

n tvt*r aars a

's a s*:a r :.:n u

av NT cascasenc9 Ano *=ceasts ccastcutN:rs g [During routine startup operation, t was observed that the startup feedwater I

t o,21 I flow instrumentation readouts did not indicate the expected values for the I

go,4; leurrent reactor power level. This resulted in failure to have Post Accident I

go#.,gMonitoring Instrumentation operable'(T.S. 3.3.3.6).

This is.the first event I

to..i lof this type and the third report under this specification. There was no l

[3!,j leffect upon the general public health or safety.

I toie!I

-. l

$$Es I:

ss.I$!s

{ Il El@ W@ [Z_J@ [ I I NI SlT I R I U l@ *bs:$ s[,,E,j @ M e

C:vec= 4%? :::

s jaieI [Z_]

n sa cua nt:46 QC:gget%C1 a t *:=?

8M CN tte og IVf%r'948 818:sf %Q.

C::E Tvrt

%c

@,ang 18 1 0i t- _j l Of 3 I s I IA 10 I3 I tlJ l. -!

L0]

_2, a

u 2

a 2,

m u

'aCNC

's7 C

• f wt

' Cyes s' s 8:a A 1

3 ** I w.

age lE l@L. Zj@

[ZJ@

LzJO 101010101 lr_J@

LnJ@

L.22J@IB 10I4158@

u 2

n 24 s-

.o o

cause casemierics ANs ccaat:nva Acncss @

,,.,lThe cause of this event is attributed to instrument drif _yeedunter rinu I

t

,diffarential pressure xmtrs SP-7A/7B-DPT and flow indicators SP-7A/7B-FI guere recalibrcced and verified operable. The history of this instrumentation j

,,,,,ghas been reliable; no generic problem is identified.

No further corrective j

,,,,,gaction is reqttired.

8.

S$

$ Ota CTd estafts s

v t

O'$C vtuv agt:sie-c%

y [Gj@ [018 l 0 l@l NA l

Qi@l Operator observation l

' admirv c:lrasr fiTe1 L.Zj (Z_J@l 4 :vvrca 4:wirv @ l 6:catics en = 6:ur @

atttui e asi.rur NA l

_l NA

.....,%,. i.,e.a o w =es.

Tv v

ss:= men li iil l01010 J@l Zi@l A

l

' ',..sess.'6',m'ils ens:mier'es@

w viea NA l0 l0101@l i,

j r

as s,

s:

[:TR lZ l@l gv,4,gra nour g ten ce== =

NA l

g h., @j,1,.,,,,@

_.0 Nac t.se entv

(

NA g

,r:gi

,,i g;

n..

n Navne.- of preparer:

K. F. Lancaster (904) 795-6l.86 e

l' (SEE ATTAN SU? LEMF.NTARY INFORM 17N STm7) 60

4 SUPPLEMENTARY INFORMATION REPORT NO.:

50-302/80-035/03L-0 FACILITY:

Crystal River Unit #3 REPORT DATE:

8 September 1980 OCCURRENCE DATE:

16 August 1980 IDENTIFICATION OF OCCURRENCE:

Failure to have Post Accident Monitoring Instrumentation operable contrary to Technical Specification 3.3.3.6.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 1 Startup Operation DESCRIPTION OF OCCURRENCE:

At 1720 it was observed that startup feedwater flow indicators SP-7A-FI and SP-7B-FI indicated values not consistent with the current power jevel.

Investigation revealed the differential pressure transmitters SP-7A-DPT and SP-7B-DPT as well as SP-7B-FI required recalibration.

Both the flow indicators and the differential pressure indicators were verified operable on 29 August 1980. Redundancy was not applicable to this event.

DESIGNATION OF APPARENT

CAUSE

The apparent cause of this event was instrument drift.

ANALYSIS OF OCCURRENCE:

There was no effect upon the general public health or safety.

CORRECTIVE ACTION

The history of this instrumentation has been reliable; no generic problem is identified. No further cor-rective action is required.

FAILURE DATA:

This is the first occurrence of this type and the third report under this specification.

L