ML20095J185

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Forwards Fracture Mechanics Analysis Performed to Support Alternative Repair Methods for Three lower-canopy Seal Welds on Facility,As Requested During Recent Telcon W/Nrc.Info Provided in Conjunction W/Tva Ref Ltr
ML20095J185
Person / Time
Site: Sequoyah Tennessee Valley Authority icon.png
Issue date: 12/19/1995
From: Shell R
TENNESSEE VALLEY AUTHORITY
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20095J187 List:
References
NUDOCS 9512260364
Download: ML20095J185 (3)


Text

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Tennessee Vaney Authonty Post omce Bon 2000, Soddy Da<st ennessee 37379 T

December 19,1995 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of

)

Docket No. 50-327 Tennessee Valley Authority

)

SEQUOYAH NUCLEAR PLANT (SON)- ADDITIONAL INFORMATION FOR AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) ALTERNATIVE CANOPY SEAL WELDS - UNIT 1

Reference:

TVA letter to NRC dated October 11,1995,"Sequoyah Nuclear Plant (SON)- Request for Approval of Alternative to American Society of Mechanical Engineers (ASME) Code Requirements - Canopy Seal Welds -

Unit 1" As requested during a recent telephone conversation with the NRC staff, we are enclosing a copy of the fracture mechanics analysis that was performed to support alternative repair methods for three lower canopy seal welds on SON Unit 1. This information is provided in conjunction with TVA's referenced letter.

Please direct questions concerning this issue to D. V. Goodin at (423) 843-7734.

Sincerely, u

t'

\\

R. H. Shell i

Manager j

SON Site Licensing l

Enclosure cc: See page 2 i

H OCC0g 9512260364'95121'9 Agi PDR ADOCK 05000327 p

P_._ _ _, _ PDR _

6-U.S. Nuclear Regulatory Commission Page 2 December 19,1995 i

cc (Enclosure):

Mr. D. E. LaBarge, Project Manager Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 NRC Resident inspector Sequoyah Nuclear Plant 2600 lgou Ferry Road Soddy-Daisy, Tennessee 37379-3624 Regional Administrator U.S. Nuclear Regulatory Commission Region 11 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-2711

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1 ENCLOSURE ANALYSES ASSOCIATED WITH THE WELD OVERLAY REPAIR 1

FOR THE SEQUOYAH NUCLEAR PLANT UNIT 1 CONTROL ROD DRIVE MECHANISM LOWER CANOPY SEAL WELDS

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