05000334/LER-1980-109-03, /03L-0:on 801208,axial Flux Difference Increased Above Target Band.Caused by High Initial Second Fuel Cycle 100% Target Flux Value.Target Flux Value Lowered

/03L-0:on 801208,axial Flux Difference Increased Above Target Band.Caused by High Initial Second Fuel Cycle 100% Target Flux Value.Target Flux Value Lowered

ML19351F535
Person / Time
Site:	Beaver Valley
Issue date:	01/05/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19351F522	List: 05000334/LER-1980-104-03, /03L-0:on 801204,F-476 Feed Flow Protection Channel for 1A Steam Generator Failed Surveillance Test. Caused by Bad Clock Board Allowing Loop Voltage Drift on Steam Flow Input.Clock Pulse Adjusted 05000334/LER-1980-106-03, /03L-0:on 801206,inner Door of Containment Air Lock Failed Surveillance Leakage Test Per Tech Spec.Cause Not stated.O-rings Greased & Valves Tightened 05000334/LER-1980-107-03, /03L-0:on 801206,electrolyte for Detectors 101A & 101B Found Not Dripping.Caused by Clogged Wick & Glass Orifice.Wick & Orifice Cleaned & Top Vent Filter Loosened 05000334/LER-1980-108-03, /03L-0:during Maint Surveillance Procedure for Calibr of Hydrogen Analyzer H2-HY-100B,failed Function Circuit Card Found.Caused by Electronic Circuit Card Failure.Function Card Replaced 05000334/LER-1980-109-03, /03L-0:on 801208,axial Flux Difference Increased Above Target Band.Caused by High Initial Second Fuel Cycle 100% Target Flux Value.Target Flux Value Lowered ML19351F521
References
LER-80-109-03L, LER-80-109-3L, NUDOCS 8101130443
Download: ML19351F535 (2)

LER-1980-109, /03L-0:on 801208,axial Flux Difference Increased Above Target Band.Caused by High Initial Second Fuel Cycle 100% Target Flux Value.Target Flux Value Lowered

Event date:
Report date:
3341980109R03 - NRC Website

text

_

NRC PORhil des V.S.NUCLEAD KECULATCGY COMMISSION mTh LICENSEE EVENT REPORT CONrROL OLOCK: l l

l

}

l l

l@

(PtEAst PRINT OR TYPE ALL REQUIRED INPORMATIONI lo l i j l P l A l 3 l V l S l 1 J@IS0 l0 l-l0 l0 l0 l0 l0 l-l0 l0 [@l4 l1 li l1 l1 [@l l

l@

I 4 9 UCENSEE COOE 14 UCENSE Nuvet A 2$

26 UCENSE fvPE 40 ti GA f $8 1% l L @l 0 l 51010 l0 l 3 } 314 l@l 1 l 2 l 0 l 8 l 8 l 0 }@l 0l 1l Ol 5l 81 1 CCN*T 101:1 i

8 40 48 OOCKET *suustm tie 69 EV ENT OATE 74 75 REPORTOATE 80 EVENT DESCRIPTION AND PROSA8LE CONSEQUENCES h IOI21i At 025C aours while increasing power, the Delta Flux Out Of Target Band alarm was j

10 # 31 l received. After stopping the power increase at 80 percent, the Axial Flux l

I o 141 l Dif ference ( AFD) reentered the tarcet band in 9 minutes. The AFD also left the l

ITTs"l l band for 1 minute at 0301 hours0.00348 days <br />0.0836 hours <br />4.976852e-4 weeks <br />1.145305e-4 months <br />. Power operation continued in accordance with l

l'IiTs~l 1 Technical Specification 3.2.1.

The henith and safety of the public was not l

I III7l I ienpardized since the AFD remained well within the AFD safety limits.

l 10181I

.0 SYSTEM

CAUSE

CAUSE COUP.

VALVE COOE CODE SUSCODE COuPONENT CODE SUSCODE SUSCODE In 18 l@ W@ lz l@ lz Iz lz Iz lz lz l@ Iz l@ W@

O 9 7

8 9

to is 42 13 18 19 20 SEoUENTIAL OCCummENCE REPOmr REVi$lON (gneno EVENTYEAR REPORT NO.

CODE TYPE NO.

O"Jg l288 l 01 L--I 11 10 19 I

.M I013 I It I l.--J y3 0

22 23 24 26 27 IS 25 30 31

• 5e*E!E PCaEs. '"d"Pe@eY' uENIECTO'a*en YAcT"'A"CTYEd Ol[PYA$r

• • 'EYT u

pot 4s 22 s

LE,,J@l Zl@

l Zl@

lZ l@

[0 l0 l0 l l

W@

lNl@

l Z ]@

lZl9l919l@

u 34 as 2

oo 4

42 43 a

47 CAUSE DESCRIPTION AND COR'RECTIVE ACTIONS li t o l l The departure of the AFD from the low side of the target band occurred because the I

li t i l l initial second fuel evele 100 percent target flux value of +6.8 nercent was in I

On 12/9/80. a new value of +1.69 percent was determined based on operating i

~

m I error.

On 12/30/80 the 100 percent target flux l

g l data obtained near 80 percent power.

I I value was further revised to -0.75 percent.

In14i e0 7

8 1 5A

• % POWER OTHER STATUS 0:5CO Y

OtSCOV ERY DESCRIPTION l Flh l 0 l 8 l 0l@l N/A l

l A l@l Annunciator panel alarm l

• 5 CCOTcNr LOCATION OP RELEASE @

AmouwTOP ACTiv:TY @ l ACTIVITY N/A l

N/A l

atteaseO OP atteAst 18 l l 2 l @ LZj@dass l

l1 PsmsONNatexPos OrsCniPTiON@

l wasta TvPt l1171 l 0 l 0 l 0 l@l Z l@l N/A 80 Ptp50NNEt iNJuniE5 OesCaiPTionh l

Nuveta fiTTI I O I O I O l@l N/A s0 7

8 9 it a

T E Ot1CR PT one I

[.'_L2J(_Z_J@l N/A to 1

4 9

!O itst,E l

lllllllll!!ll1 12101 [lt.f@*.,E CMIPTION l

N/A 68 69 80 3 7

3 9 r0

~

~

w* S* L#U"Y PHONE.

NAME OF PAEPARER

--810Jyggj/C.. -. - - -.-

Attachment To LER 80-109/03L Beaver Valley Power Station Duquesne Light Company Docket No. 50-334 No further information is available or needed to satisfy the reporting requirement.

O e

e 9

9 e

4 l

Y l

f I

I.