ML20154P318
| ML20154P318 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 10/15/1998 |
| From: | Feigenbaum T NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NYN-98118, TAC-MA0571, TAC-MA571, NUDOCS 9810220288 | |
| Download: ML20154P318 (4) | |
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go3) 474421 The Northeast Utilities Sptem October 15,1998 Docket N a. 50-443 NYN-98118 Ref:AR#98007102 NYN-98085 United States Nuclear Regulatory Commission
~ Attention: DocumentControlDesk Washington,DC 20555-0001 Seabrook Station Correction to a Response to Information Request Recardine Reactor Vessel Intecrity (TAC NO. M A 0571)
"In a letter dated June 24,1998 (NYN-98085), North Atlantic Energy Service Corporation (North C
Atlantic) responded to a request for additional information regarding reactor vessel integrity.
i Due to an administrative error, certain best estimate Nickel values reported in Tables 1,2B and 3B of that response were incorrect. Accordingly, enclosed please find revised Tables 1,2B and.
3B with the correct best estimate Nickel values annotated with revision bars. This error was
- ypographical in nature and did not affect the calculations or the other data presented in the t
tables.
.Should you have any questions, please contact Mr. Terry L. Harpster, Director of Licensing Services, at (603) 773-7765.
Very truly yours, g
NORTH ATLANTIC ENEROY SERVICE CORP.
bDOl
/
kb(WY! #Awbtsu Ted C. Feigenbau Executive Vice I esident and
)
Chief Nuclear Officer cc:
II. J. Miller, NRC Regional Administrator J. T. Ilarrison, NRC Project Manager, Project Directorate 1-3 R. K. Lorson, NRC Senior Resident inspector R
43 PIM y
O 5
ENCLOSURETO NYN-98JJ_8, l
l i
k Table 1 Facility: SeabrookStation Vessel Manufacturer: Combustion Engineering Infom1ation requested on RPV Weld and/or Limiting Materia!c Assigned i
Material RPV Best Best EOL ID Chemistry Method of Initial Material Estimate Estimate Fluence Factor Determining RTur ARTat ID Copper Nickel (xtu")
(CF)
CfD (RT%)
ol cA Margin EOL i
Rl808-3 0.07 0.59 237 35.6 Surveillance 40 0
S.5 17 101 4P6052 0.037 0.057 237 11.2 Surveillance '
-60 0
14 28
-l8 i
i R1808-3 0.07 0.59 237 44.0 Tables 40 0
8.5 17.
III I
4P6052 0.037 0.057 237 283 Tables
-60 0
14 28 3
"I Determined from tables or from surveillance data Discussion of the Analysis Method and Data Used for Each Weld Wire Heat Weld Wire Heat Discussion 4P6052 Based on Seabrook Station-specific RPV Weld Chemistry and " sister" plants with RPVs fabricated from common weld heats as reported in Reference (c).
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L Table 2B: Plate R1808-3 Irradiation l
Measured Data Used in Temperature Fluence ART sni Assessing Vessel 2
CapsuleID Cu Ni
( F)
(x10n/cm )"'
( F)'"
(Y or N)
U-Seabrook 0.07 0.59
<579 0.28 28 Yes Y-Seabrook 0.07 0.59
<579 1.15 34 Yes Table 3B: Plate R1808-3 (Adjusted-i CapsuieID Irradiation Fluence Measured Adjusted Predicted Predicted)
(including Temperature Factor"'
ART sor ART sur ART sur ART nr 3
source)
Cu Ni
(*F)
( F)'"
('F)'"
( F)
(F)
U-Seabrook 0.07 0.59
<579 0.653 28 96 23.2'3) 72.8 Y-Seabrook 0.07 0.59
<579 1.039 34 94 37.0("
57.0 Pec Reference (d)
(3)
Using curve fitted CF=35.6 (Reference (d))
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