ML19345E269

LER 80-095/03L-0:on 801121,during Safety Injection Accumulator 1A Level Channel 1 Test,Low Level Alarm Setpoint at Comparator LC-S1-920B Found One Gallon Below Tech Spec Min.Caused by Setpoint Drift.Comparators Recalibr

ML19345E269
Person / Time
Site:	Beaver Valley
Issue date:	12/15/1980
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19345E264	List: ML19345E263 ML19345E269 ML19345E273
References
LER-80-095-03L, LER-80-95-3L, NUDOCS 8012230533
Download: ML19345E269 (2)

Text

. _ _ __

U.1, NUCLEA2 CETULArCRY COMMIS$3oM c'RC POnte JOS D r71 ~ '

t.!CENSEE EVENT REPORT

- O CoNraos.etoCol 8 I I I l 1 l@

6 iPtEASE Pamr on ryn au. aEcuiaeO iNPoau4rioNi l l GTile leP l A l B l V l Sa l 1 J@l 0 l 0 l-uCausa uCausea Coos is l 0 s.ww.ta l0 l 0 l 0 l 0 l- l0 2el 0 l@l4 es uCaNa l1 tvnl1 ao l1 si l 1carl@l$s @

CON'T o i g' l *., @l 01510 l 0 l 0 l 3 l 3 l 4 @l e4 11 69 112 l 1 l 8 l 01@l1 l2MEPomroArt Evapor oATE le 7S 11 l5181040l@

I 4 ElO 88 oOCK E r acupe Em EVENT DESCRIPTION AND PROSA8LE CONSEQUENCES to o 2 lAt 1002 hours0.0116 days <br />0.278 hours <br />0.00166 weeks <br />3.81261e-4 months <br /> during performance of . TSP 11.03, Safety Injection Accumulator 1A Level l the low level alarm setpoint at Comparator LC-SI-920B was found to  ;

g l Channel 1 Test, l

g lbe 3.487 vde, which corresponds to a volume of water approximately one gallon below At 1109 hours0.0128 days <br />0.308 hours <br />0.00183 weeks <br />4.219745e-4 months <br />, during o 5 l the' Technical Specification 3.5.1 limit of 7,664 gallans. I o s l performance of MSP 11.05 Safety Injection Accumulator 1B Level Channel 1 Test, the l o 7 l low level Comparator LC-SI-924B setpoint was found to be 3.489 vde, or approximately I l

l o l a i I one gallon below the Technical Specification limit. eo 7 8 9 COMP. vaLvt SYSTEM CAusE CAUsE CooE CooE SUSCooE COMPONENT CooE susCoof sueCoof Q IIl B l@ l X l@ l Z l@ lI lN l S lT l R l U jQ l Y l@ l 20Z l@ 18 19 9 10 81 12 13 7 8 REvislON SEQUENTIAL OCCURRENCE REPomr REPORT No. CooE TYPE No.

_ EVENT vfAR t

1019 i s I .M 1013i l--J toj i

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O" ,a'Emino I 8 l 01 21 22 L- J 23 24 24 27 29 29 Lt_J 30 38 32 Hours sS e Po 8. su LE MA UFA RER ACT P T M TH (Z_j@ l0l0l0l0j W@ y@ lN l@ lW l1 l2 l0 [g 33

[34,2,j@ [Z_J@

3s 36 32 40 el 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTICNS 27 l

i o lThe Level Comparators LC-SI-920B and LC-SI-924B setpoints had drifted approximately g l0.025 volts low. The comparators were recalibrated in accordance with MSP 11.03 andl l

, , IMSP 11.05, respectively. LC-SI-920B was returned to service at 1041 hours0.012 days <br />0.289 hours <br />0.00172 weeks <br />3.961005e-4 months <br /> and l

L'13.J LLC-SI-924B was returned to service at 1118 hours0.0129 days <br />0.311 hours <br />0.00185 weeks <br />4.25399e-4 months <br />.

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's'OIOY spowen oTwen stArus @ "EoEv' oiscovany oesCairrion @

l i s W @ l0l0l0l@lo N/A l [,B,,j@l Surveillance testing so i2 a * *s

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A ou=T o, .Crivirv @ l l N/A i a Wn.so.'. tex,osses

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lol0101@lZl@l '

N/A _,

n so...'t .uu'4 s ouM. . oesC...rioN@ l i a 1ol01ol@l N/A 80 7 8 9 11 12 LCMS oF om oamaGE vo FAClurY .

TYPE otsCRI*flON l

i 9 [,z_J@l N/A

' ].t.Cfrv ,,,,, g 8012230 N/A S33 ~

l NaC uSE entv Qll!llflllll{

2 o W @l io es se so. s

• b* bEC"Y PHONE:

412-643-8525 g NAME oF PaEPARER

_ . . . _____ . . . _ . . _ . _ . . _ _ . _ . _ . - _ _ _ _ _ _ . - _ . . _ - _ _ _ . _ , . . . . _ _ . ~ _ . - _

. . . .~. . . -. . ._ _ . . __._ _ _ - . _ . . . . -.. . .. . - - - .. . . . . - .

i .

1-Attac'hment To LER'80-95/03L Beaver Valley Power Station ~

Duquesne Light Company Docket No. 50-334 i-

. No further information is available or needed to satisfy the reporting requirement.

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