05000334/LER-1981-055-03, /03L-0:on 810529,during Maint Surveillance Test, High Level Alarm on Safety Injection Accumulator 1C Was Discovered Above High Limit.Caused by Instrument Drift.Trip Voltage Adjusted

/03L-0:on 810529,during Maint Surveillance Test, High Level Alarm on Safety Injection Accumulator 1C Was Discovered Above High Limit.Caused by Instrument Drift.Trip Voltage Adjusted

ML20009A531
Person / Time
Site:	Beaver Valley
Issue date:	06/29/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20009A523	List: 05000334/LER-1981-041-04, /04T-1:on 810513,tritium Level in Quarterly Composite of Weekly Grab Samples Collected from Oh River Was Found Higher than Tech Spec Requirements.Caused by Normal Plant Discharge.New Tech Spec Limits Submitted 05000334/LER-1981-054-03, /03L-0:on 810527,outside Recirculation Spray PP2A Seal Water Level Low Alarm Sounded Following Surveillance Testing.Caused by Seal Package Retaining Ring Sticking & Preventing Proper Alignment.Seal Replaced & Retainer Lubed 05000334/LER-1981-055-03, /03L-0:on 810529,during Maint Surveillance Test, High Level Alarm on Safety Injection Accumulator 1C Was Discovered Above High Limit.Caused by Instrument Drift.Trip Voltage Adjusted ML20009A522
References
LER-81-055-03L, LER-81-55-3L, NUDOCS 8107130279
Download: ML20009A531 (2)

LER-1981-055, /03L-0:on 810529,during Maint Surveillance Test, High Level Alarm on Safety Injection Accumulator 1C Was Discovered Above High Limit.Caused by Instrument Drift.Trip Voltage Adjusted

Event date:
Report date:
3341981055R03 - NRC Website

text

_

0-77) l.lCENSEE EVENT REPORT CCMTROL BLOCX: l l

l l

l l

l (PLE ASE PRINT OR TYPE ALL REQUIRED IRFORMATION)

Io lil IP I A l B lV lS l 1 l@l 0 l 0 l-l 0 l0 l 0 l 0 l 0 l-- l0 l 0 l@l4 l1 l1 11 l1 l@l l

l@

7 3 3 LICENSEE C',OE i4 15 LICENSE NuvetH 25 LICENSE TYPE JJ

$ 7 LA T 6d

'i o t i l sgca' 11. l@l 015 l 01010131314 l@l 01512191 sl 11@lo l6 l219 I a li l@

COTT a

l7 3

60 61 OCCK ET Nuv8 ER ba 63 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSECUENCES h 1

[o 121 l During power operation at 1038 hours0.012 days <br />0.288 hours <br />0.00172 weeks <br />3.94959e-4 months <br />, a maintenance surveillance test discovered i that the high level alarm on the 1C Safety Injection Accumulator drifted slightly l Ic lal I

' [ o l.i l l above high limit. This would have resulted in the adding of an additional volume 1

lo # s j l of water prior to receiving the high level alarm. Approximately 2 gallons of I

Io is l 1 vater would have been the additional volume added. The henith and snforv of thn I

I 1 o 17 l 1 public was not ieopardiOed bv this event.

i 1013! l 80.

SYSTEM

CAUSE

CAUSE COMP.

VALVE COOE CODE SU8 CODE COMPCNENT CODE SU8 CODE SUBCODE loiel I s t r ]@ W@ I z l@ l zi zi zi zl zi zl@ l l@ l 7

8 9

IQ tt 12 TJ 18 19 20 S ECUEN TI AL CCCURRENCE REPCRT REVISION EVENTYE4R REPOR T NO.

CODE TYPE N O.

@ ase'ACl 8l 11 l-l l 0l 51 5l l/l 10 l 3 l lL l l-l l 0l LEA T

_ 21 22 23 24

6 27 28 29 30 31 32 AC90N FUTUAE EFFECT SHUTGoWN ATT ACHM ENT NPRO.4 PRIVE COMP.

COMPONENT TAKEN ACTICN CN PLANT MEsHCO HOURS SUSMITTED FORM bub.

SUPPLIER MANUFACTURER l

1El@lzi@

LLJ@

Lz_J@

l o 10-1010 l l Y l@

lNl@

lAl@

lzl9l919l@

32 43 41 42 43 44 47 23 34 34

,o CAUSE DESCRIPTICN AND CORRECTIVE ACTIONS hj **

l1 10 l l The cause of this event has been attributed to Ner mone dri f t. The trin volencel was immediately adjusted to the correct value by 1041 hours0.012 days <br />0.289 hours <br />0.00172 weeks <br />3.961005e-4 months <br />.

No other problems I

l j.;l i,,,,l were found with the instrument channel.

f I 1:1 i l

l tall 80 s a

's' tie oTHER STATUS @Es'COSNv' DiSCOvERv OEs:RieticN

. Pe..E a l' Iil W@ l ll O! Olhl N/A l

l A l@l Annunciator Alarm l

l' 2! :uiv CSTENT LCCATION CF RELEASE af. EASED OF AELE ASE AVCUNT OF ACTivlTV 1: 14 l l 2 l @ l cl@l N/A l

{

N/A l

1 30 i 9 IJ

't 44 45 7EESC*.NEL E OCS. A ES NtvsEA T' ' E CESCRIPTION a l

l - l -i 10 l 0 l c l@l c l@l N/A J Es E.s=v.E

E3:m ricN@

l

. vs!.

IIIl01010l@l N/A 5

.05$ 0E C+1 04V ACE *O SACILITY l

.E

Es: mer::..

I ;:! QJ@l N/A 60 3

J

's NRC IME CN! Y N y"2/

/ '\\

P'. 9 U C: TY

1. ! l [NJ@)

N/A I

l!!1ItI!!

1 I I :I

.,.E0 E;C m an :

na s+

30. ;

8107130279 810629 ChD i

PDR ADOCK 05000334 S. Lu ev psoyg a

S PDR

Attachment To LER 81-055/03L Beaver Valicy Power Station 1

Duquesne Light Company Docket No. 50-334

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

O e

e O

N, m

.-.m.