ML19319E548

AO 50-313/76-2:on 760301,discovered Pilot Cell Daily Voltage Readings for Station Batteries Not Taken for 760227-0301. Caused by Voltmeters Being Removed for Calibr & Reading Not Recognized as Tech Spec Surveillance Requirements

ML19319E548
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/11/1976
From:	Cook R ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML19319E546	List: ML19319E545 ML19319E548
References
NUDOCS 8004110809
Download: ML19319E548 (4)

Text

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N ME UCENSE NUMBEA TY 7 89 i I AIRI AlRIKI t I 14 lolol-lololololol-lolol 15 25 14l1IrIilii 26 30 loll 32l 31 CATEGcAY T7PE A OOCKET NUMBEA EVENT CATE AEPORT DATE O 1 CON'T l l l lTl l1l 10!5101-101311131 lol 3 lol i l 7 l ro l lo13 l l l 1 17161 7 8 57 58 59 60 61 68 69 74 75 ,

80 EVENT DESCAlPTION u l At loco houis on Marck 2,is76, it was discove,,4 +ba.t. ne pilot cett voltage 1 7 89 80 c3 l readings fev ne statiew batteries.were not taken deny from Feb.17,1976 +o I 7 89 80 g l March 1,1Wo as ve9u;rea by Teckhical Speifical. ion 4.6.2.1 due 4e voltmeters l 7 89 80 oa l being verw ved for calibratiow. Volt.vwehers will be taqqed repring opera.tio s i O f Supvsr. a p prova.1 pvior to vemoval fvo~ service . (.50 313 /76-2.) *j_

7 89 ,,,, 80 E OCE COMPONENT CCCE M R VOLATON /

O7 IEICI LA_J 131 A ITiTl RlYl IAI I X i a.I a l a.1 (BU 7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION 7 89 8 l%ltmeters were removsd Sov calibration ud R was not recoswit.ed hat these l SO

@ ireadings were Tech Spec suev.illawce requiremeal.s. Voltmeters will be faqqect

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[] lrequirin Opera. Hens Supvsv. ataproval prior 4e ren. oval from Servic.e . 1

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sT s powtA ofsEA STATUS "c!SCovfAY CSCOVEAY CESCASTON 1.1 7 8 9 l El 10 1016151 1 12 13 NA I lbl I NA I 44 45 46 80.

AEL $0 C SE AMOUNT OF ACTivlTY LOCATICN CF RELEASE 22 7 8 9 17.1 LJ 10 l l I i .

11 44 45 80 PERSCNNEL EXPCSURES NuMBEA TYPE DESCA@TCN 13 lololol [gj l NA I j

7 89 11 12 13 BC PERSONNEL INJUAIES NUMBEA CESCASTTCN mm lololol i NA .

In 7 89 11 12 80 -

CFFSITE CONSEQUENCES is 1 NA i 7 89 80

• LOSS CR OAMAGE TO FAC'UTY Tv ot  ::ESCASTCN luSJ L3J l NA I-7 89 10 80 PUBLICITY i7 I NA i 7 89 80

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1. Abnormal Occurrence Report No. 50313/76-2

2. Report Date: !! arch 11,1976 3. Occurrence Date: blar'h c 1, 1976 4

Facility: Arkansas Nuclear One - tqit l' Russellville, Arkansas-S. Identificati~on of Occurrence: The pilot cell voltage readings for the station batteries per Technical Specification 4.6.2.1 were not taken.

6. Conditions Prior to Occurrence: -

Steady-State Power X Reactor Power 2160 MWth flot Standby Net Output 545 MWe Cold Shutdown Percent of Full Power 65 %

Refueling Shu.tdown Ioad Changes During Routine Power Operation Routino Startup

( Operation --

Routine Shutdown Operation Other (specify) 1

7. Description of Occurrence:

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I At 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> on llarch 2, 1976, it was discovered that the pilot cell voltage readings for the station batteries were not taken daily from February 27, 1976 through ltarch 1, 1976.

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March 4, 1975 NSP-10, Rev. 2 Page 2 of 4

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m Abnormal Occurrence Report No. 50-313/76-2

8. Designation of Apparent Cause of Occurrence:

Design Procedure - -

Itanufacturc , Unusual Service Condition ~

Including linvironmental Installation /

Construction Component Failure ,

Operator Other (specify) _

The voltmeters were removed for calibration and it was not recogni:ed that these readings were Technical Specification survsillance requirements.

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\ 9. Analysis of Occurrence:

The temperature and specific gravity for ea,ch pilot cell and bank voltage were taken February 27, 1976 through March 1, 1976 and pilot cell voltages were.taken on ?! arch 2,1976 and all were within the required range. This incident did not affect the health and safety of the public. '

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Om Mtrch 4, 1975 NSP-10, Rev. 2 Page 3 Of 4 e

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50-313/76-2 ,

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There will be a. tag placed on voltmeters which will require Operations  !

Supervisor approval prior to removal from service and includo on the hattory log a statement indentifying these readings as Technical Specification ~ requirements. '

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