ML20206G366

SER Supporting Employee Concern Element Rept EN 21002, Inadequate Environ Qualification of Electrical & Instrumentation Control

ML20206G366
Person / Time
Site:	Sequoyah
Issue date:	11/04/1988
From:	NRC OFFICE OF SPECIAL PROJECTS
To:
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References
NUDOCS 8811220251
Download: ML20206G366 (3)

Text

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[p. a r n .*'c UNITED STATES y i ., ,. , , ' 3i NUCLEAR REGULATORY COMMISSION W ASHING TON. D. C. 20tSS 3 , - ;g e a SAFETi EVALVATION REPORT BY THE OFFICE OF SPECIAL PROJECTS

\ . .v...f gPLOYEECONCERNELEMENTREPOS,EN21002

"!NADEOUATE E0 OF ELECTRir.AL AND !AC" l TENNESSEE VALLEY AUTHORITY i SEOUOYAH NUCLEAR POWER PLANT UNITS 1 f. 2

DOCKET NOS. 50-327 AND 50-328 l t

j i

1. Subject c

Category: Engineering (EN 200)

Subcategory: EQ Process (!N 210)

Ei er.e r.t : Inadecuate EQ Progran (21002)

The basis for Element Recort EN 21002, Revision 2, dated February 2, 1987, is the following employee concerns:

Wl-85-100-C05 -

I XX 122-01 A XX-85 122-015

XX 85-122-016 "Environrental qualification of electrical and !&C equipment and components is inadequate. Qualification was of ten not done, or if it was l done, records do not exist in many cases, which results in mcdification

or replacement. Current upgrade program for environmental cua'ifications need scrutiny. Cl has no further information. Anonymous concern via letter." -

i XX 85-094 013 i "Sequoyah: It is the quality problems regarding environmental l ovalifications of components per NUREG 0588 that made the Sequoyah plant r shutdown. Cl has no specifics or hardware details."  !

I HI 2! 077 N13 l

"NRC identified the following concern from review of the QiC file:

"Inadequate envirenrental qualification /documentations.'" i OE ?! 4 i "ledivic;al tae infer-atien thtt r.i;P.t be helpful in the equirrent  !

cualification effort."

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2 II. Surrecy of !ssue The issue defired by TVA is:

/. The environmental rivalification (EQ) program at Seque'yah is inadecuate.

5. Net all required ecuipeert was qualified.

C. Qualificatien records de ret exist or are inadequate in many. cases.

D. Current upgrade program fer EQ needs scrutiny.

111. Evaluatien VA personnel deter . ired that the cercerns with the EQ program were validt owever, the Secucyah E0 precrar- had been determined to be inadecuate by TVA management reviews independeht of and prior to the filing of these concerns.

The inadequate prograr was documented in aWESTEC/TV 25, 1985. As result of i

,or r Ccepliance with 10 CFR 50.a9." dated September 21-22, 1985, and an extensive the findings. Secuoyah was shutdown on August l new EQ prograr was implerented at Secuoyah to ensure qualificatio ecuipment within the scope of 10 CFR 50.49. l prior te restart cf the plant.

TVA has also addressed these concern's in Nuclear Safety Review Staff (N Report 1-85 225-SCN, "Ervironmental 12, 1956, and Cualification/ Electrical /l&C Equipment /

drew the same conclusions that the Components," dated Farch The N3R$ report concluded that the corrective actions WESTEC/TVA report did. listed in the report, as augmented by the new EQ Nuclear Perforrance Flan, should be sufficient to resolve these concerns.

The element report further acknowledged that there were outstanding items to be completed in the E0 program; however, it concluded that onceThe thereport EQ progra was complete these program concerns uculd be adequately resolved. 6 determined that a long term E0 progran has been established to provide

! continued support in these areas to Sequoyah and other TVA operating units.

f l

i 3-IV. Cenclusions The NRC staff believes that the TVA investigation of the concerns wa1 adequate, and their resolution of the concerns as described in ElencatThe N Report EN 21002 Revision 2, is acceptable.

of the Seoucyah EQ program January 6-17, February 10-14 December 6-12, 1986,Although deficiencies were found during the inspections, to Unit 2 restart.

TVA has corrected the de#iciencies or will have them corrected prior to restart. Subject to completion of the Sequoyah EQ program by TVA and certification that quoyah is in compliance with 10 CFR 50.49, the staf f believes that the Sequoyah EQ program will ensure satisfactory resolution of this issue.

V. Addendu-Since the writing of this SER, TVA has ccFpleted the Sequoyah E0 crogran a has certified that Sequoyah Unit 2 is in compliance with 10 CFR 50.49 in 24, 1987 and February 27, 1988. The staff letters to the NRC dated Parchcencluces that the issuance of 10 CFR 50 I AC ecuiprent has been satisf actorily resolved by the Sequoyah EQ program, j

Since the writing of this SER and the closure of this !.n issue for Secuoyah letters dated Unit 2. TVA has cCepleted the EQ Program for Sequoyah.and Nov harch 24, 1987 Based on this, the staff cor.cluces is in compliance witn 10CFR50.49.

that this employee concern has satisfactorily been resolved by the Sequeyan EQ pregram.

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