NSD-NRC-96-4918, Submits Revisions to Criteria for Piping Functional Capability to Be Included in AP600 SSAR
| ML20132F034 | |
| Person / Time | |
|---|---|
| Site: | 05200003 |
| Issue date: | 12/18/1996 |
| From: | Mcintyre B WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | Quay T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NSD-NRC-96-4918, NUDOCS 9612240095 | |
| Download: ML20132F034 (4) | |
Text
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I Westinghouse Energy Systems Bm 355 j
Electric Corporation Pittsburgh Pennsylvania 15230-0355 i
i NSD-NRC-96-4918 DCP/NRC%88 Docket No.: STN-52-003 i
i l-December 18,1996 l
Document Control Desk l
U. S. Nuclear Regulatory Commission l
l Washington, DC 20555 i
f ATITNHON: T. R. QUAY 1
j
SUBJECT:
PIPING FUNC'HONAL CAPABILITY i
Dear R Quay-j As promised during the meeting with the NRC stafT on December 6,1996 Westinghouse is resising the criteria for piping functional capability to be included in the AP600 SSAR. A draft mark-up of l
Table 3.9-11 is attached. Also, the following two mfemnces will be added to the SSAR j
e 19.
" Functional Capability Criteria for Essential Mark 11 Piping," General Electric Company, NEDO-21985, 78NED174, E. C. Rodabaugh, September,1978.
.i 20.
" Functional Capability of ASME Class 2/3 Stainless Steel Bends and Elbows," ASME 83-PVP-66, T. I1. Liu, E. R. Johnson, K. C Chang.
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The seventh paragraph of subsection 3.9.3.1.5 will be resised as follows:
I 1he functional capability requirements for ASME piping systems that must maintain an i
adequate fluid flow path to mitigate a Level C or Irvel D plant event are shown in Table 3.9-i i
- 11. These requirements are based on refemnces 19 and 20.
i These changes will be included in Revision 10 of the SSAR.
If you have any changes please contact Donald A. Lindgren at (412) 374-4856 if you have any i
questions.
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Bdan A. Mc ntyre, Manap Advanced Plant Safety and Licensing
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attachment cc: D. Jackson, NRC, (attaclinent) 9612240095 961218 mA PDR ADOCK 05200003 A
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- 3. Desiga of Structzres, Compnents, Equipment; and Systems Table 3.9-11 (sheet 1 of 3)
PIPING FUNCTIONAL CAPAHI{)ITY - ASME CLASS 1,2, AND 3(
Wall Thickness:
Do/t s 50, where Do, I are per ASME III Service Level D Conditions Equation 9 s smaller of 2.0 S and 3.0 S (2,4)
Equation 9 5 smaller of 2.0 Sf and 3.0 Sh3,4)
External Pressure:
P 5E external intemal TE + SCVE C2*M*D /215 6.0 S ( )(NB-3650) 0 m
Equation 10a (NC3653.2) 5 3.0 S W c
TF + SCVF C2*M*D /21 s 6.0 S l I (NB-3650) 0 m
Equation 10a (NC 3653.2) s 3.0 S W c
DW E 2
", m,,.
~., a y
_a Notes:
1.
Applicable to Level C or Level D plant events for which the piping system must maintain an adequate fluid flow path 2.
Applicable to ASME Code Class 1 piping for all loading conditions and analysis methods 3.
Applicable to ASME Code Class 2 and 3 piping when the following limitations are met:
3.1 Dynamic loads are reversing (slug-flow water hammer loads are non-reversing)
' 3.2 Dynamic moments are calculated using an elastic response spectrum analysis with 15 % peak broadening and not more than 5 % damping 3.3 Steady-state bending stress does not exceed:
B2* M s 0.25 Sy Z
4.
AppPe % : re 1 'n; dy=m;; '=&
nd : 'bM ka - i; P-
'nd For ASME Class 2 and 3 piping that does not satisfy the limitations in note 3 above, functional capability is assured when the equations on sheets 2 and 3 are met.
I Revision: 10 ow nm30%niai:io*
l Draft,1996 3.9-120 W W8Stingl10USB
.3.# Design of Structures, Components, Eq11pment, cnd Systems I
Table 3.9-11 (sheet 2 of 3)
PIPING FUNCTIONAL CAPABILITY - ASME CLASS 1,2, AND 3 Component.
Stress Calculation Stress Limit j
Straight Pipe (5)
PDo/4t + M/Z l.5 Sy Branch (6) 3;(6)*PDo/2t + B2b(6)*Mb2b'+ B2r(6)*Mr/Zr L 2.0 Sy htainless Steel Elbow (7) '
Bl(7)*PDo/2t + B2(7)*M/Z l.8 Sy Nen-stainless Steel Elbow (8)
Bl(8)*PDo/2t + B2(8)*M/Z l.5 Sy Reducer l9)
PDo/4t + FCI(9)*M/Z l.5 Sy Butt Welding Tee (10)
.Bl(10)*PDo/2t + B2b(10)*Mb/Zb + B2r(10)*Mr/Zr :
2.0 Sy Fabricated Tee il1)
PDo/4t + FCI(II)*M/Z l.5 Sy Notes:
5 Includes butt-welded joint,30 degree tapered transition, fillet-welded joint, socket-welded flange, single-welded slip on flange, and brazed joint.
6 Bl.= 0.5, except if either B2b or B2r is 4/3, then B1 = 2/3 B2b.= 1.5(R /T ) 3('m'/R ) (T '6 )(fm /f ), but not less than 4/3 b r p
m r m
B2r = 0.6(R,U (fm /R ), but not less than 4/3 r
m R, T ' 'm', T ', T, and r based on ASME III, NB3600 m r b
r p
os-ieo.unn aiai2i696 Revision: 10
[ W85tiligh00Se 3.9-121 Draft,1996
- 3. Desig2 of Struct:res, Components, Eq~.j me:1, and Systems p
Table 3.9-11 (sheet 3 of 3) 9 PIPING FUNCTIONAL' CAPABILITY - ASME CLASS 1,2, AND 3 Notes:
l 7
B1 = -0.1 + 0.4h, but not less than 0.0 nor greater than 0.5. Also, for B2 = 1.0, B1 = 0.5 2/3 B2 = 1.3/h for alpha > 90 degrees, b
0.895/h.912, for alpha = 90 degrees, 1.0, for alpha = 0 degrees h, and alpha based on ASME III, NB-3600 interpolate linearly for values of alpha < 90 degrees, B2 not less than 1.0 8
B1 = -0.1 + 0.4h, but not less than 0.0 nor greater th:n 0.5. Also, for B2 = 1.0, B1 = 0.5 B2 = 1.3/h2/3. for alpha > or = 90 degrees, 0
1.17/h.56, for alpha = 45 degrees 1,0, for alpha = 0 degrees
' h, and alpha based on ASME III, NB-3600 interpolate linearly for values of alpha < 90 degrees, B2 not less than 1.0 9
FCI = 0.75i, but less than 1.0 i = 0.5 + 0.01 alpha (D /1 ), but not greater than 2.0 22 D,1, and alpha based on ASME III, NC-3600 22 10 B1 = 0.5, except if either B2b or B2r is 4/3, then B1 = 2/3 B2b = 0.4(R U ), but not less than 4/3 m r B2r = 0.5(R /T ), but not less than 4/3 m r R, and T based on ASME III, NB3600 m
r 11 FCI = 0.75i, but not less than 1.0 i = 0.9/h2/3, h based on ASME III, NC-3foO Revision: 10 owiomun nio-i2io*
Draft,1996 3.9-122
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