ML20217P076
| ML20217P076 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 10/06/1999 |
| From: | WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | |
| Shared Package | |
| ML20138H414 | List: |
| References | |
| NSD-SAE-ESI-99, NSD-SAE-ESI-99-390, NUDOCS 9910290206 | |
| Download: ML20217P076 (5) | |
Text
.'.
p.1 NSD-SAE-ESI-99-390 FARLE? UNITS 1 AND 2 LBB CALCULATION RESULTS DUE TO STEAM GENERATOR (SG) REPLACEMENT 1
AND SG SNUBBER ELIMINATION PROGRAMS j
UNIT - 1 Highest stressed location is at location 1 (reactor vessel outlet nozzle to pipe weld in j
the hot leg). Location 1 was also the highest stress location in the existing analysis.
j Loads Dimensions. Normal Loads and Normal Stress Lccation Outside Thickness Axial Bending Stress Comments Diameter Loads Moment (in.)
(in.)
(kips)
(in.-kips)
(ksi) 1 33.78 2.28 1458 25150 21.6 existing
[
1 33.78 2.28 1554 24380 21.53 new Note: Normalloads of deadweight, normal thermal expansion and pressure are combined by alaebraic sum method.
Faulted Loads and Stress Location Axial Loads Bending Stress Comments Moment (kips)
(in.-kips)
(ksi) 1 1768 30130 25.9 existing 1
1803.76 31586
_ 26.96 new Notes:
1.
Faulted loads of deadweight, normal thermal expansion, pressure and SSE are combined by absor'ute sum method.
2.
Ratio of new faulted stress / existing faulted stress is = 1.04 i.e., new faulted stress is increased by 4.0 %.
Material Properties Matciial Type: SA351CF8A Temperature: 614 F Average Yield Strength = 24642 psi Minimum Yield Strength = 21430 psi Minimum Ultimate Strength = 66470 psi Modulus of Elasticity, E = 25.23E6 psi J
9910290206'991010 PDR ADOCK 05000348 PDR 3,1 p
- p. 2 NSD-SAE-ESI-99-390
. 0 C, C.
3 Assessment of A.r if:.9; Margins relative to; a) Flaw Size - Using faulted loads obtained by the absolute sum method, a margin of at least 2 exists between the critical flaw and the flaw having a leak rate of 10 gpm (the leakage flaw),
b) Leak Rate - A margin of 10 exists between the calculated leak rate froni the leakage flaw and the leak detection capability of 1 gpm.
c) 1.oads ' The leakage flaw was shown to be stable using the faulted loads obtained by the absolute sum method. Margin on loads of 1.0 is satisfied.
==
Conclusion:==
All of the recommended LBB margins are satisfied.
- p. 3 NSD-SAE-ESI-99-390 UNIT - 2 4
i
- Highest stressed location is at location 1 (reactor vessel outlet nozzle to pipe weld in the hot leg). Location 1 was also the highest stress location in the existing analysis.
Loads Dimensions. Normal Loads and Normal Stress Location Outside -
Thickness Axial Bending Stress Comments Diameter Loads Moment (in.)
(in.)
(kips)
(in.-kips)
(ksi) q 1
33.81 2.30 1456 25150 21.4 existing
)
f 1
33.81 2.30 1554 24380 21.33 new Note: Normalloads of deadweight, normal thermal expansion and pressure are combined by aloebraic sum method.
Faulted Loads and Stress Location Axial Loads Bending Stress Comments Moment (kips)
(in.-kips)
(ksi) 1 1767 30130 25.7 existing 1
1803.76 31586 26.72 new Notes: 1.
Faulted loads of deadweight, normal thermal expansion, pressure and SSE are combined by absolute sum method.
2.
Ratio of new faulted stress / existing faulted stress is = 1.04 i.e., new faulted stress is increased by 4.0%.
Material Properties Material Type: SA351CF8A Temperature: 614*F Average Yield Strength = 22575 psi Minimum Yield Strength = 20217 psi Minimum Ultimate Strength = 66600 psi Modulus of Elasticity, E = 25.23E6 psi i
l
- p. 4
~
l NSD SAE-ESI-99-390 l
0,C,8 I
\\
\\
Assessment of Marains l
Margins relative to:
a) Flaw Size - Using faulted loads obtained by the absolute sum method, a
)
margin of at least 2 exists between the critical flaw and the flaw having a leak
)
rate of 10 gpm (the leakage flaw).
l b) Leak Rate - A margin of 10 exists between the calculated leak rate from the l
Ieakage flaw and the leak detection capability of 1 gpm.
l c) Loads - The leakage flaw was shown to be stable using the faulted loads obtained by the absolute sum method. Margin on loads of 1.0 is satisfied.
==
Conclusion:==
All of the recommended LBB margins are satisfied.
t
- p. 5 4
NSD-SAE-ESI-99-390 Reactor Pressure Vessel I
e COLD LEG HOT LEG 3
' '- {
l
,3
, g-
\\
Reactor Coolant Pump
\\
Steam Generator CROSSOVER LEG 4
l
=&
Q) p]= @
=4
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h h
Schematic Diagram of the Farley Plants RCL Showing Weld Locations