ML20093E084

Forwards Design Stress Rept, in Attempt to Resolve Seismic Problem.Requests Exemption from Outage Based Deadline Specified in 10CFR50.49(g) for Motorized Operators on Valves 2E11-F016A&B

ML20093E084
Person / Time
Site:	Hatch
Issue date:	07/12/1984
From:	Gucwa L GEORGIA POWER CO.
To:	Stolz J Office of Nuclear Reactor Regulation
Shared Package
ML20093E088	List: ML20093E084 ML20093E100
References
NED-84-334, TAC-55488, TAC-55489, NUDOCS 8407170373
Download: ML20093E084 (3)

Text

p Georgia Power Company 333 Pedrr.or t Avenue A'tanta, Ce>rg+a 30308 Telectone 404 526-6526 Ma+ng Address.

Post Ctfice Box 4545 Atlanta. Georg:a 30302 L

Georgia Power L T. Gucwa IN wuN " "1rc grem Manager Nuclear Engineering and Chief Nuclear Engfee' NED-84-334 ally 12, 1984 Director of Riclear Reactor Reg 21ation Attention: Mr. John F. Stolz, Chief Operatirg Reactors Branch No. 4 Division of Licensirg U. S. Riclear Reg 21atory Omnission Washirgton, D. C.

20555 NRC DOCKEP 50-366 OPERATING LICENSE NDF-5 EDNIN I. HA'ICH NUCLEAR PIANP LNIT 2 EQUIINENP QUALIFICATION PROGRAM DEADLINE EXTDEION REQUEST FOR RHR ISOLATION VALS ACIUATORS Gentlenen:

On March 50, 1984, Georgia Power Conpany (GPC) albnitted a report to the NRC (NED-84-161) - which cutlined the program for meeting the reg 2irements of 10 CFR 50.49 at Plant Hatch.

'Ihis report included a listirg of eglipment items at Hatch-2 (Encloaire 2, Table 2, Footnote A) which GPC believed might not be fully g2alifiable by the reg 21atory deadline (second refueling cutage after March 31, 1982.

Included in this list were the new Limitorgie SB-3-150 motorized operators purchased as envirorsnentally gjalified replacements for the motors on valves 2 Ell-F016A&B.

'Ibese new valve operators meet the gialification req 2irements of 10 CFR 50.49; however, they can not be installed at present since they would cause severe overstressing of the body flanges on the albject values diring a Design Basis Earthglake. All attenpts to resolve this seismic problem using refined analysis techniq2es have been unasccessful (see Attachment 2 for the analysis report).

GPC has also determined that there is no other conimercially available motorized operator which cculd meet the applicable performance specifications and the req 2irements of 10 CFR 50.49.

Therefore, the only remainirg course of action is replacement of the two affected valves.

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[)k 8407170373 840712 PDR ADOCK 05000366 P

PDR

m-GeorgiaPower A NED-84-334 ally 12,1984 Page Two GPC is expediting procurement of two new valves to replace the current 2 Ell-F016A&B valves which serve as cutboard containment isolation on the two Resicinal Heat Removal System Containment Spray Lines.

The items reg 2 ired are 16 inch, 300 lb., Class 2 globe valves.

GPC has attenpted to procure existing spare valves from other utilities and alpplyers (includiry those listed in Attachnent 1) without alccess.

01rrently, GPC estimates that the new valves could not be received at Plant Hatch before the end of 1984.

This is well beyond the gialification deadline date (end of the current Hatch-2 refueling / pipe-replacenent outage) which is currently projected to be near the end of ally 1984.

Conseglently, GPC hereby recpests an exemption from the autage based deadline specified in 10 CFR 50.49(g) for the motorized operators on valves 2 Ell-F016A&B at Plant Hatch Unit 2.

However, GPC will make every practicable attenpt to meet the March 31, 1985, deadline date specified in that same regulation.

Sircerely yours, M

L. T. G1 cwa GS Encloaires xc:

J. T. Ihckham, Jr.

H. C. Nix, Jr.

J. P. O'Reilly (NRC-Region II)

Senior Resilent In@ector e

y-ATTACIDENT 1 NRC D00Tr 50-366 OPERATING LICENSE NPF-5 EDWIN I. HA'101 NUCLEAR PIANT UNIT 2 EQUIP!GNP QUALIFICATICN PROGRAM DEADLINE EXTHEION REQUEST FOR RIM ISOLATION VALVE AC'IUA"DRS Following unalccessful attenpts to obtain appropriate replacements for the 2 Ell-F016A&B valves from internal conpany sources, including the construction project for the Vogtle N.1 clear Plant, GPC contacted the following utilities and valve alppliers:

Tennessee Valley Authority Union Electric Conpany Mississippi Power & Light Company Washington RIDlic Power S2pply System Philadelphia Electric Canpany Houston Lighting & Power Conpany Dake Power Company Southern California Edison Arizona Riblic Service Company cincinnati Gas & Electric Conpany BJ:X Corporation valve Systems & Controls comapny Borg-Warner Fluid Controls Aloyco Division - Walworth Conpany i

Anchor /Darlirg Valve Company Atwood & Morrill Conpany, Inc.

Only the last two companies on this list are able to alpply valves which meet GPC's specifications.

Neither of these firms is able to deliver the valves prior to the end of 1984.

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