ML20011E349

LER 90-001-00:on 900108,discovered That 24-month Tech Spec Required Local Leak Rate Test Surveillance for Containment Electrical Penetration Had Not Been Performed Since 870917. Caused by Personnel Error.Test performed.W/900205 Ltr

ML20011E349
Person / Time
Site:	Callaway
Issue date:	02/05/1990
From:	Blosser J, Czeschin G UNION ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-90-001, LER-90-1, ULNRC-2150, NUDOCS 9002130277
Download: ML20011E349 (5)

Text

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Cassway Plant : February 5, 1990 k

U. S. Nuclear Regulatory Commission j Document Control Desk

= Washington, DC 20555 ULNRC-2150 -i

' Gentlemen:-

DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 1 FACILITY OPERATING LICENSE NPF-30 LICENSEE EVENT REFORT 90-001-00

, TEST ON ELECTRICAL PENETRATION WAS NOT PERFORMED WITHIN ITS REOUIRED FREQUENCY DUE TO A HUMAN PERFORMANCE ERROR The~ enclosed Licensee Event Report is submitted pursuant to- -

10 CFR 50.73(a)(2)(1)(B) concerning operation of the Callaway Plant with a condition prohibited by the plant's Technical Specifications. The condition resulted from the failure to perform a local leak rate test on ,

an electrical penetration within its Technical Specification required 24 month frequency due to a human performance error. .

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. D. Blosser Manager, Callaway Plant VS tam TPS/ LAM:jlh o Enclosure cc: Distribution attached r ym

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Mahng Aattress'P.O. Box 620, Fulton MO 65251

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Mr. Merlin Williams' J Manager,-Electric Department Supt. of Regulatory Quality & '

Missouri Public~-Service: Commission' Administrative Services.

P. 0 Box.360' Wolf Creek Nuclear Operating Corp. i' Jefferson City, MO 65102' P. O. Box 411-_.

Burlington, KS -66839 .

Records Center Mr. R. L. Hague  :

. Institute of: Nuclear-Power Operations -Chief Project Section.3C Suite 1500 .

'U.S. Nuclear Regulatory _ Commission 1100 circle 75 Parkway Region III

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i LICENSEE EVENT REPORT (LER) p '

eACiufv NAME ol DoCn 1 NUw R iil ' Ant s p

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1 20 406teH1Hol 6013mH2 Heat) 50 734.H2Hal LICIN5ti CONT ACT FOR THL% LER (12) a NAME TE L EPHONE NUMEsER ARL A CODt G. J. Czeschin, Superintendent of Planning & Scheduling 3 14 6 76- 84 30 l i I i i 1 1 1 !

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~} No l l l Aosf R ACT a,, .e to oa a o . ..-. , o.n , ,,,, -, ,m.., m. a. a o s, On-1/8/90, the utility surveillance scheduling engineer discovered that the 24 month Technical Specification (T/S) required Local Leak Rate Test (LLRT) surveillance for containment electrical penetration.ZSE250 had not been performed since 9/17/87. The plant was in Mode 1 - Power Operation, 100 percent reactor power at the time of discovery.

On 9/17/87 a retest LLRT was performed satisfactorily on ZSE250 per a work request. A surveillance scheduling engineer took credit for the retest as a T/S 4.6.1.2.d surveillance and manually changed the next periodic due date and late finish date incorrectly in the computerized surveillance scheduling system.

On 1/8/90, containment integrity was declared inoperable and T/S 3.6.1.1 was entered. The surveillance was immediately performed satisfactorily and T/S 3.6.1.1 was exited.

The root cause of this event is a cognitive human performance error by a surveillance scheduling engineer in September 1987.

All currently scheduled Type B and C LLRT surveillance tasks were reviewed and no other problems were identified with future due dates or late finish dates. Based upon this review, this event is considered an isolated case.

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0l0 0l2 OF) 0l3 stxs tu me. wm m. no .ww nc wm sesaw nn Basic for Reportabildtv Technical Specifiestion (T/S)'4.6.1.2.d requires that Type B and C Local Leak Rate Testo (LLRT) be conducted with gas at a pressure less than T , 48.1 psig, at intervals no greater than 24 months. On 1/8/90 the utility surveillanceschedulingengineerdiscoveredthatthe24monthTgrequired LLRT surveillance for containment electrical penetration ZSE250 had not been performed since 9/17/87.

This Licensee Event Report is submitted pursuant to 10CFR50.73(a)(2)(1)(B) to report a condition prohibited by the plant's T/S.  !

Condition at Time of Event Mode 1 - Power Operations, Reactor Power 100%.

Description of Event-On 9/17/87 a retent LLRT was performed satisfactorily on electrical penetra-tion ZSE250 per a work request. The surveillane.e scheduling engineer took-credit for the retest as a T/S 4.6.1.2.d surveillance and manually changed the next periodic due date in the computerized surveillance scheduling system as allowed by procedure.

1 On 1/8/90 it was discovered through periodic review of upcoming scheduled

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surveillances by the current utility surveillance scheduling engineer that the-scheduled performance date for the LLRT for ZSE250 showed 2/9/90 while ,

the Inte finish date for the surveillance was 2/3/90. He then discovered '

that the 24 month T/S ri:[uired LLRT surveillance for ZSE250 had not been performed since 9/17/87.

Steps to perform the surveillance were immediately initiated by the Planning  !

and Scheduling department. The Engineering and Instrument and Control departments and the licensed operators were notified.  ;

At 1235 the licensed operators declared containment integrity inoperabic and the one hour action statement for T/S 3.6.1.1, Containment Integrity,.was  ;

entered. The-action statement was entered because T/S 3.6.1.2 action statement for Containment Leakage does not specify the actions to be taken when the plant is greater than 200'F. The LLRT surveillance for the penetration was completed satisfactorily at 1304 therefore exiting the action statement and satisfying both Liriting Conditions for Operation for T/S 3.6.1.I and 3.6.~1.2.

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' LICENSEE EVENT REPORT (LER) TEXT C;NTINUATION Amovto ove No. sue-om i

(XPmtS. 8/3DOB (1q P AC6LITY NAAet O) DOCkti NUMDt m (2) Lta NunettR (ei PA04 (31 ma i I"M!'.'. ' 00J.9 Callaway Plant' Unit 1-015 l01010 l41813 910 Ol0 ll -

010 013 OF 0 l3 hKT s.* awe gnpor e .,qrumt, par seweenaf 44C #enn Jed W dh Root Cause-- l i

The root cause of this event is a cognitive human performance error by a i previous surveillance scheduling engineer in September 1987. On 9/17/87, following a successful LLRT retest on electrical penetration 2SE250, the

-computer generated due date and late finish date were manually changed to I 9/21/89 and 2/3/90.

He apparently read the frequency of 24 months in T/S 4.6.1.2.d and set the due date 24 moaths from 9/17/87, or 9/21/89. He did not observe the surveillance task sheet note that T/S 4.0.2, which allows a 25 percent extension to the late finish date, was not applicable. He then incorrectly added a 25 percent extension for the late finish date (based on a 18 month frequency). It was set at 2/3/90 which is 4.5 months from 9/21/89.

Surveillance credit taken for LLRT retests and the subsequent manual adjustment of the computerized scheduled due dates is infrequently done.

1 Corrective Actions

1. .The surveillance scheduling engineer and the LLRT engineer conducted a l review of all currently scheduled Type B and C LLRT surveillance tasks L to ensure there were no other problems and to check to enstree future due dates and' late finish dates were within the proper time interval. The 'i review, completed on 1/15/90, did not identify any additional problems

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with' future due dates or late finish dates, i

'2. Methods for adding the independent verification of manually initiated .!

changes to the surveillance scheduling program will be evaluated, i

Safety Significance  ;

Tha LLRT surveillance for the electrical penetration ZSE250 was performed satisfactorily on 1/8/90. All equipment functioned as required by plant design and therefore this event posed no threat to the health or safety of the public.

Previous Occurrences None.

Footnotes  ;

The system and component code below is from IEEE Standards 805 and 803A, respectively..

1)- System - JM, Component - PEN N%C FO%M 366A . 'U.5. CPGs 1988 4N- 589 ' 000 'O