ML20062J006

Part 21 Rept Re Power Plant Noncomplying Valves.Reanalysis 90% Complete.Corrective Action Involves Design Changes & Review by Customer Engineering & Field Personnel.High Priority on Valves Which Must Meet Increased Loading

ML20062J006
Person / Time
Site:	Grand Gulf, Zimmer
Issue date:	08/03/1980
From:	Niehaus P WILLIAM POWELL CO.
To:
References
REF-PT21-79-168-004 NUDOCS 8009150062
Download: ML20062J006 (2)

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CD CCFPAff( NATE o% d d PART 21 IDBUIFICATIbN NO.

79-/6f-o o c/

wze a.

MTE OF lfiTER.

7/3/Eo D00(ET NO.

MTEDISTRIBlIIB) 9/,2 9//d ORIGIML REPORT SUPPLEFBiTARY[

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DISTRIBlHION:

REACTOR (R)[

FUELCYOf&[

SAFEGUARDS (S)[

EIU IE FILES IE FIES AD/ROI (2)

IEFILES AD/SG AD/RCI .~-

AD/FFFSI AD/f01 EGIONS I,II,III,IV,V REGIONSI,II,III,IV,V REGIONSI,II,III,IV,V

-- --VaOOR BR. R-IV VEIOOR BR. R-IV V900R BR. R-IV U)EB / FPA PIB 5715 NIES / FGE SS-396 NRP/ DOL AE0D FIB 7602 L0EB/FPA ffB 5715 IFSS / SG SS-881 NRR/ DOE AE0D FIB 7602 U)EB / FPA FIB 5715 NRR/DSI AS B P FM 450 AEOD FTB 7602 iMT

~

SAD /SP ITB-7210A ASBP FM 450 ~

NRR/ DOL CENTRAL FIES 016 CBiTRALFILES 016 ASLBP FM 450 CENTRAL FILES ( OiRON)

CBURAL FIliS (DiR0fD CBERALFILES 016 PDR CBiTPALFILES SS-396 CDRRAL FILES (OIROBD

[PDR PDR PDR TEPA LPDR

[PDR TERA ACTI0th

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PRELIMINARY EVALUATION OF THE' ATTACHED REPORT ItOICATES LEAD RESPONSIB FOLLOWJP AS SFOhN BELOW:

IE y NRR2 ESS E OTliER

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ss rFFMSI Pa', 8/1/80

.6009150o6.q,

g Tr THE WM. POWELL COMPANY

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2503 Spring Grove Avenue. P.O. Don 14006. Cincinnati, Onlo 45214. U.S.A.

513/852 2000 Augue.t.1,1960

% -/[7-ddy United States Nuclear Regulatory Commission Regbn iV 61114ym Plaza Drive Suite 1000 Arlington, *(X 76012 Attention: Mr. K.V. Seyfrit, Director

Dear Mr. Seyfrit:

?

Reference:

Our repor t of noncompliance dated Novenitner 12,14/9.

The reunalysin of*nli qualifying reports for all power p!=rit values i.s 90'fo complete.

Natural frenuency values calculated by present nemlytical methods meet customer specifications. The renseinirig 10% are all volves supplied to Cincinemti Cas &

Fles.tric Cumpnny. We empcct completion of this prograra ley September 1.

Corrective action fdr noncomplying Mlan.is.sippi Power 6 Licht valves is proceeding.

lhe customer has requested that we place a hi hcr priority on the enalysis and D

corrective action for valv6n which must meet increased loading and frequenc.y re-quir ementn dicroned by specification char.ge.

Ocsign concepts have been establ!shed for all noncomplying valves and are being re-vlowed with our custumeen engineering and field personnel.

Siricer ely,

ilIC WM. POWELL CO iPANY f'

,4 L 't. d Paul W. Niehnuu V.P., Min. & Lnnincerinn PWN/!r Three copies to:

Directer, Office of Inspection nixi F.nforr.cment U.S. Nuclear Regulator y Commir. sinn j

Washington, L).C. 20555 mm m

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