05000346/LER-1978-095-03, /03L-0:on 780905,station Batteries Weekly Surveillance Test Not Performed Until 780906.Caused by Personnel Error

/03L-0:on 780905,station Batteries Weekly Surveillance Test Not Performed Until 780906.Caused by Personnel Error

ML20147B278
Person / Time
Site:	Davis Besse
Issue date:	09/29/1978
From:	Baltz J, Beeler T TOLEDO EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20147B268	List: 05000346/LER-1978-095, Forwards LER 78-095/03L-0 05000346/LER-1978-095-03, /03L-0:on 780905,station Batteries Weekly Surveillance Test Not Performed Until 780906.Caused by Personnel Error
References
LER-78-095-03L, LER-78-95-3L, NP-33-78-112, NUDOCS 7810100063
Download: ML20147B278 (2)

LER-1978-095, /03L-0:on 780905,station Batteries Weekly Surveillance Test Not Performed Until 780906.Caused by Personnel Error

Event date:
Report date:
3461978095R03 - NRC Website

text

I U. S. NUCLE AR REGUL ATORY COMMISSION i

NR ORM 30E mm LICENSEE EVENT REPORT

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8 10 la j l on 9/5/78 it was discovered by unit personnel that fication surveil-g 10131 l ve111ance Test had not been performed as required by Technical Speci completed until September 6, 1978 at j

lance requirement 4.8.2.3.2a.

Testing was not l o 141 1 There was no danger to'the health and safety of the public or to unit j

f o ( s i l 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br />.

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'l TOLEDO EDISON COMPANY DAVIS-BESSE UNIT ONE NUCLEAR POWER STATION SUPPLEMENTAL INFORMATION FOR LER NP-33-78-112 DATE OF EVENT:

September 5, 1978 FACILITY: Davis-Besse Unit 1 ST 5084.01, " Station Batteries Weekly Surveillance 1DENTIFICATION OF OCCURRENCE:

Test" was not performed in the required seven day period u

The unit was in Mode 1, with Power (MWT) = 2098, Conditions Prior to Occurrence:

and Load (MWE) = 716.

At 1530 hours0.0177 days <br />0.425 hours <br />0.00253 weeks <br />5.82165e-4 months <br /> on September 5, 1978, it was discovered Description of Occurrence:

by unit personnel that ST 5084.01, " Station Batteries Weekly Surveillance Test" had not been performed as required by Technical Specification surveillance requirement The Technical Specification requires that each 125 volt battery be 4.8.2.3.2a.-

demonstrated operable once every seven days. The maximum allowable extension period was 25% of the seven day frequency which required testing to be completed by Septem-ber 2, 1978. Testing was not completed until September 6,1978 at 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br />.

Designation of Apparent Cause of Occurrence: Personnel error is the cause of'this scheduling per-A misunderstanding existed between surveillance test sonnel and test personnel which resulted in the assu=ption that the test was ccm-occurrence.

pleted.

There was no danger to the health and safety of the public Analysis of Occurrence:

or to unit personnel.

If a need _f or the batteries existed, they would have been able to perform properly.

Corrective Action

Maintenance personnel were notified of the discrepancy and immediately began performing the test. The test was completed on September 6, 1978, at 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br /> which verified the batteries were operable and satisifed the surveillance requirement of Technical Specification 4.8.2.3.2al.

Previous f ailures to complete the surveillance requirements were I

Failure Data:

reported in Licensee Event Reports NP-33-78-112, NP-33-78-103, NP-33-78-108, but these did not include NP-33-77-84 NP-33-77-93, NP-33-78-98 and NP-33-77-101, the station battery surveillance requirements.

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LER #78-095