ML20214A183
| ML20214A183 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 10/15/1986 |
| From: | WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | |
| Shared Package | |
| ML19292G273 | List: |
| References | |
| ST-HL-AE-1784, NUDOCS 8611190286 | |
| Download: ML20214A183 (12) | |
Text
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ATTACHMENT A ST-HL-AE- #984
.PAGE : OF i A l
Westinghouse Non-Proprietary Class 3 4
~
FRESENTATION AND MANDOUT MATERIAL REIATIVE TO LB5 CAlcVIATIoss FOR SOUTM TEXA8 PROJECT 12 INCE DIAMETER ACCUMULATOR LINE OCT0EER 15. 1986 uzETING WITH THE anc l
2 l
W137INGHOUSE E.ECTRIC CORPORATION l
NUCLEAR ENERGT SYSTDG l
P.O. Box 7T28 Pittsburgh, Pennsylvania 15230
$$h $Dbb
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ATTACHMENT 2.
ST-HL AE-I'784 PAGE a OFit FIGURE I SOUTH TEXAS PROJECT 12 INCH ACCUMULATOR LINE F
or 8
b 10 RCS COLD LEG
/ BRANCH NDZZLE
/%
x A
3 12"
, h,
- 2" h
k C
=
m
=
ACCUMULATOR LINE OPERATING PRESSURE = 2304 psi
'(TYPICAL FOR LOOPS 1,2 and 3) i 1
l l
ATTACHMENT l -
ST HL AE-IWI.L i
PAGE A 0F1:L.
l ACCtM1 ATOR L1E TEAK-BFFORE-BREAK EVALtRTIDN FDR THE SOLITH TEXA5 PROJET STEP 1:
CALCtLATE THE CRACK SIZE YlELDING 18 F M LEAK RATE.
USE NORML OPERATING LOADS
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c, e t I
t*-*t T.
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2" I
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p q
k
- - ~ _ _ _ __._ _ _ _._ _ _ _ _.
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RESti TS:
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NORMAL DPERATING tDAOS:
- FORCE, F = 197 KIPS BENDING >0 MENT, M = 619.5 IN-KIPS l
(a.c.e>
CRACK S'12E YlELDING LEAK RATE OF 18 F M IS LONG.
ATTACHMENT A ST-HL-AE-17tv PAGE 4 OF1.1.
I ACCtM1ATOR 1 IW 1EAK BEFORF RREAK FVA! t& TION,
FOR THF EDUTH TFYAS PROSCT APPLY W (NORMAL + SSE) LOADS TO TH STEP 2:
A)
THE LEAKAGE SIZE CRACK FROM STEP 1.
E EEN N B)
CALClLATE 'JAPPLlED tmet t i
M f
8 N.0" 1
-m
_._______.L_______.
,f,
e
<%9
.e L
6 i
H 2.75" I
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RFRII TS:
I Il
% (NORMAL + SSE) LOADS ARE:
FORCE, F = 282.8 KIPS BENDING ElENT, M = 13i8.7 IN-KIPS (8,Cie)
~
THUS, A PARGIN ON LOAD OF%
IS DEMONSTRATED FOR THE LEAK SIZE
... a ATTACHMENT ST-H L-AE- /W.2_
PAGE 6 OF/2 ACCLMJLATOR LIF t FAK-BEFORE-BREAK EVAltR
USECRACK51ZEi2(LEAKAGESIZECRACK)
I STEP 3:
A)
L = 2 (J)
DEPONSTRATE CRACK BF. APPLY (NORMAL + SSE) LOADS.
STABILITY.
i
=
Crack L, I
1.00"
_ _ _ _ _ _ _ J. _ _ _ _ _ _ _ _
a o
p Y
p,
(
h m
M2.75H
(
t REStLTS: (1)
J-T APPROACH
(..c.e>
IF IWB3640 APPROACH IS USED AND CONSERVA (2)
ASStWTION 15 MADE THAT THE MAX 16UM LOA LOCATION, THEN THE " CRITICAL
- FLAW SIZE WOULD BE AB
^
-HL Yh 1:1
__ PAGE G OF /s.
l ACCUMULATOR LINE RAK-BEFORE-EREAK EVALUATION FOR ~~
THE SOUTH TEXAS PRDJECT CONCLUSIONS o
FATIGUE' CRACK GROWTH WOULD BE INSIGNIFICANT (BASED ON TYPICAL RESULTS) i o
NO MECHANISM IS KNOWN THAT CAN CAUSE THE LARGE SIZE OF FLAWS ASSUMED IN THE EVALUAT10N P'STULATED THROUGH-WALL FLAW WOULD YlELD A DETECTABLE j
O o
LEAKAGE l
o AMPLE MARGINS ARE DEMONSTRATED WITH RESPECT TO LEAK DETECTION, MAXIMUM APPLIED LOADS AND FLAW SIZE THUS, MECHANISTIC CONSIDERATIONS SHOW THAT DOUBLE ENDED l
GUILLOTINE BREAKS ARE NOT POSSIBLE FOR THE SOUTH TEXAS l
PROJECT ACCUMULATOR LINES I
l
l ATTACHMEiMT &
ST-HL-AE 17tv PAGEj O_F/ L e
South Texas Loop C Safety Injection Wozzle.'
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v-e ATTACHMENT 2 ST-HL-AE l?N PAGE g OF $9-t fME MATERT ALS AND Ff M olt THE 2 Put\\TS (a,c e) l i
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b
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ATTACHM ENT.2.
ST HL-AE /7N PAGE 9 0F/.2 TYPICAL ROCH TEMPERATURE PECHANICAL PROPERTES OF THE ACCUMULATOR Livr NATERTALM ANS Wf DM & THE 50tml Tmt PRMFCT UMITS 1 1ND 2 PUtg Continued (a.c.e) 4 I
l l
e e
3
-.2..
3 (o,c.e)
ATTACHMENT J.
ST-HL-AE /7tv PAGE /0 OF /s
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E eia l
t l
l l
True htress-True Strain Curve for SA376 TP316 Stainless Steel at 560 F 0
~
I ATTACHMENT 1 ST HL A
,_PAGE llE- /7sp Oftz (a,c,e) l 5
1 l
l Variation of the applied J as a f tion 4f applied moment up to the normal plus SSE load for a Sng through-wall (8.c *)
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circumferential crack - South Texa Projeit Accumulator Lines e
(a,c,e)
D)
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72 e
PRELIMINARY S
1
_a ATTACHMENT,L ST HL AE-/7/V PAGE /a_OF />
(a c.e) l
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VariationoftheappliedJasafunctionof.,3pplidmomentupto i
4 times the nomal plus SSE loading for al long through-wall (a,c.e) circumferential crack - South Texas Project Accuiiiulator Lines I
(a,c.e)
DRAFT PRELIMINARY
.