ML20080J321
| ML20080J321 | |
| Person / Time | |
|---|---|
| Site: | Oconee, 05000000 |
| Issue date: | 04/17/1981 |
| From: | Dean R, Foley W PARAMETER, INC. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| Shared Package | |
| ML19277C608 | List: |
| References | |
| CON-NRC-05-80-251, CON-NRC-5-80-251, CON-NRC-IE-80-81, FOIA-83-642 IE-123, IE-123-R01, IE-123-R1, NUDOCS 8402140520 | |
| Download: ML20080J321 (28) | |
Text
- - __
l a 0.
I Page 1 of 15 Item 6 Stress Analvsis of Failed Steam Generator Manwav
_ Studs fron Oconee Unit 3 of Duke Power Company Attschment 1 to Report No. IE-123 April 17, 1981 i
l Prepared for:
United States Nuclear Regulatory Coralission Office of Inspection
(
and Enforcement I
i NRC Contract 0S-80-251 g onneesess, 'is, PAR: NRC-IE-80/81 Task 03 COtv
)
Y4,,1 p
by:
PAPNIETER, Inc.
EW WALTER J. #
Consulting Engineers l
1 i
i FOLEY 1
Elm Grove, Wisconsin l
7 E 2606 25 i
%)'
./ W:
5 5
O MILwAunEt.
4 S
- wi3,
'*o,
}
.lb M,h.b$uj
,,,,g gt Walter J. Foley, P.E.
-g,
_fliw'h
,ikdfr 8402140520 831202 Robert S. Dean, P.E.
~
IMfobd
!t.
s t3-8/
2
/5
~
.3 *!' -( '
A r 74 CHMfu r
/
05-Bo-25/
/sa AM!ri. :, wc, o.c stars.r r ra-/23 M,e c-IE - 80/a t TA 3/<
o3 YA 3_ i of Cod rfu 73 pag !
pfscirte rion
/
40/4/t SHEfY 2
rA BL t of 4o2 7/W 7 3 5
1412o p us riod 4
S u n, m.A te y af. tc4 Sua 7.s S
$sc ! 7CH of MAAIwtY 6
SxtfdH of LowdA HJAD Aa2 SUPPJA7" SktM 7 Of Srd A M G f M 6 M A fo<t 7
7YP/C A L MANw'A Y dona */GunA 7/oM 8
PA fs o A p 37,edss of frup
/0 CoM /MA/SoM of WM t rWog ri,'
a A N17 t/N 7"MX/4 D FOMMS ll S run frMdsf cAyst s fy,pggg o A p PLUS 0/4 KA r/NG
//td s s u/td I'l 5 ruD 3 7/r4 SS caused EY Df 3/d&
FM d SSU/Cd oud Y
/5 Kd/dAdddds e
l b
W./ss4 Y t-#S JI 3
/6 s
O2
- *30 S !
A r rA cMM4a 7
/
05-30-26*
.P4st98tf ~d/Z,sM C.
Of /7d P0.*Z T Td-/23 NMC - ZE - 80/<S/
TASK 03
/N ft: 0 D u r~i o u S 7d AM G 4 d L M A ff it M A a w.as y S rt/ p g HAvf CtfA C'/df.,9
/M
'fMd f/C sM A R Y SYS~rfM Ar o c ca st udi r 3
df Duk!
Po vv fK t eM,pA N Y.
/.16 Y A 4. c y /t 6 / d A l.
Aup PH Y s s cA 4, PR o Pd /Z f / f 3 Of
- /~M f S &
S f c/ p S M4 //
Ssta EkA~u"ao Aap coa,e o sso a FMaDUCY$
' Dda ris y P A rt r of rM6 fffe/z Y
-ro
/
raa Moor of SA/z.use d.
THA f/W A l-P A M 7*
Of 7//f f/fd/Z 7 7o
/paar/FY TH4 Mep2 of AA/Luftf'
/S THf FA A C f ut d sv1ACH A d/C S A NAL. '/ S /.3 CON TA/N L.c
/H A r 7 A C H M d d 7~
2 Of st &PQ /Z T Nd.
If-/23.
THd Srup L O,AD CA 4 C W J. A Y d D sd 7*H/ 3 A r7*A CH M d H T*
/$
u.s & v
/H riff ' FAA c7u/tf M1CHAN/ cs ANAL Y $/ $.
e 9
e l
1
W.fss 4 Y t-<5 31 3
/6 OD 3*IC 61 A r rs*9 t's,rM4a 7
/
05 2 c. /
J'4ttA H f~~f/t,sMC.
of /75 PC.: 7 Td=/23 NRC - IS - 80/.S/
TA S/c C3
/N f/? O D uc r*< c a
$ 16 A M G2d4AAfdM M4 4 Wod y f1023 1
HAV!
OfA CMf,,0
/N 7"Hf fM /M A R Y S Yf ffM A7 o c oN ff UA/s r
.9 df D U/C f PD w fK s ~,- <.
M d T A L & U M 6t C A l.
A.u D PH Y 3 / cA 4, PR o f d /E f / 5 3 C/
THfSS S rdp $
H 4 /d S!!d 4k AM/M4 p Ad2 Costat o sso N F R G D U C 'r S HA Vf 3d dAJ AMA 4 Y Z fD AS PA R Y 0/
7Md 6/50/t 7
-ro
'tDds/ r/A y YH6 Meof of AA/L u/E &.
THA f/W'A l PAM 7 Of 7/,ff dffpA 7 7o
/ T & & 7'/ f Y THd M0p&
of SA /4 UM &
/S THf
/M A 4 fun 4 sv7/ CHAD / d S A AJAL y' S /.5 CON VA/Nd.V
/N A T TACMMdM 7 2
Of M&Pd A T oud.
- I d' - / 2 3.
THE S rup L o A.D C A s. C W L A Y f D sa TH/3 A 77*ACH M dH7*
/$
us & D
/H TNf ' fdt'A C ~rutta M f L'HA N/ &~ 5 A N A 4 y' $ / $.
n
, a 6"
- J
/6 W, foi t Y.
1-33/
d G-Bo - 2 C/
.,. AhD..
3 hs % '
A r rA chm 4,J r
/
.u P A st A M i r f.<, i d s,
d/
/? & P ett 7* ff-/23 N/t c - 2 6 - Boj g i sue tw
.o.c anawAv g
g A q'--
- ~
gj 5,5c---
M bw w-
{N N
M W
q i
e N
Tx bd k#
y l
Mw
)
Ty OT su N.
hD
.1 f
N LO w
y
(
p x
_. - - -. _. =
}
9
/
l s
./-
I JT
/
Y 2 - durf M J,A 320 QR-L.43
/G REQU/4&D
}<
.eu d it rs P.n a s 7
~
1 I
e e
s
/ L ';vs..t y n
- t. /4 -3 /
,'.t 4
'N
-. /S)
.5.*.C - h A Y 7'A c H M 4 W 7
/
0 $- 30
'2 S/
..e PArtA "16 7f A, /NC.
- f Ad/oA Y Xf=/E3
' NR C - If - 80/6/
74 S/c o5
}
sum rA s-s 1 Y of
/74 $u 4 73
}
/.
AS st dfd.2 T d D ON PAGf 9,
/MddC A P S Tad 13 GJ fH f MANw A Y
$TUD3
/S 3/8Zo P3/
h // 7 M d.:/.~~
S rat S S CsNClurnA7/od FA C TdK ( 'S C /)
Auv geno esi w/rH sCf.
TAdSd 9/A64Y 7"fMS/ A &
$754S$43 vo s/o 7
/N C s v.;p &
Bd ND su d S r/td S St :/
WH/CH Shou s D 3d NdG4 / ds S 44 BSC A,u S 6 7Hf M4 a svA y co s t.t HAs ful4 C GN TA & Y WsYH TM/
ssqA N w A y fe--oe.
l-2.
A3
/t dPO R. r d.,D OH FAG &
/3, p/// d C 7 Tdd S/4 6 37R4$$
Of
~/~M d MA WW4 Y' S 102.3 CA us t o BY
//td 4 0 *A D ps u s cPERA r/MG
//t s f $ t//Z A
/3 357/f fS/
N/ rHeu r SCF AND
/0 /, / S #1-
/3/
W/TH Sd f.
fH!
/MACfunA MZcHAasCs 4NALYSt5
/d A Y TA CHM dA/ 7 2
/S 2ASfp og 7His Co dD/ T/ca, w/TH 4041;;F Of
- T3 400 43 pdm S Y'u.D.
f' S.
/4, YHf MAwwAy S ru P S 4 /Z 4 S/2BP c o K x e c 74 Y fan rag Cou P/Y/o N Cf 2600 P5/G 2dS/ Gd /AdSS uK d Cat Y.
fdd 39/KfC Y ffM S/4 d S 7/C! 3 S c/
/3/98
- 3/
/S Less 7M 4 4 YHf Ascownwst of CSeco Pft fon l
/.
+3 Mxrfir/As.
l l
.I l
or.W..fas 4 u.
.a i cuancr..
6
.av..l E.
I cnno. evidi.2.ca re A:k.:ZI A.rrdAto+-sd.ed.r..... ]
see no...p.S Z.0 - 2 G !
!AAA M.Zi"../.M.
Qd.lt.4 ##4 7 E.d /.2.1 Md C. Z.L f.Q.,/.1f..
TA S/c 03 6'dd 74 H gF
- f. g w & /t M/4 D s4 As p s y Po* oat 7*
S/<//Ef I
- f
$ 76 A M d &dd /74 70 At rz is* f/E 7'o PAG 4 7
- W
\\
I F-'--------'--'-'----'
\\
I
\\
- 1. 0 W s p I
\\
HEA D I
\\ l< >'
n
/ I/
i s
A
/
I s
/
e
/
l s
/
x
/
/
l
< s
/
/
\\
/
p
~~.-
/
r e
/
==
j l
_y
\\.
I I
\\
l Gu'PPOR 7
}.
I JK/47 i
I I
i I
TYP/C4 L MAh!WAY CON'S/(UQA7/0N'
J ',
g
~*'
Sn d 6 7 7
of /6 A.T TA Cr/ Md AJ 7'
/
Jo 3 05 - do - 2 5 /
Of / 7 4 f C /Z 7
.72 -/23 Ms2 C - Z d - 80,/ 8 /
j 7'A S/<
03 gewen weat-Woo
~)
MM-/so CLADO /uG -
$s-sas ce-a cc.-/
Srxistesa Grect.
44euwsy ccven /CS (ARSoA/ $7'Ifd.
SA-S/C. GN-70 K
s /ur 4ocws cewee //3 e
\\
=.q CA,eeca Grue.
\\
C-/oso C.c. G.
p.g,,,,,, e,e
- i?"Nvy Nex Nur /c9 GAsner c-Mo SA-i94 le4i a. A xsc 9.
- ,s.a.
GR-4
- x. ns *rax.
Srne,e
. MApr/Ay' stup ///
./
Sk, z~- eut-- EA e
sys-ce-mo GA-zao Ge-443
,og psyg,y Q~#' A " Y /6 siwenwa,cesre r
PEA MAMWW)
Sygweess Syagg ~
S4-zfa rso-5'M 7.-____- _ _ _ _ _ _ _ _,
\\
Y lowce l
\\
Hexo jn i il
/ /,l s'
/
s
-.s/ s
,s
},
s
~~.
l:,
.[f s
l b --
6 T Y P / C A L.
MA A/ W A V C dAFINA 77Od t
$$$ $/V! O Ns Yr/
JT$ $ [$r f 3Y f A /7,4 M A 7 4 /t, syg, e
e
~~
4
.i.
8
/J
- .). & ; y i<+-si
/C.)
3'3-R!
,4 7 racHMf o r
/
0 5.s'o - 2 5 /
PAst,A +1f 7fA /M C.
C/
A;'ffo/C r If / 23 Nst C = Z f = $ Ul31 rA 3 i< o3 5 ft: A S S of f rup pK f..:/ A 2.
A:
.'s s rms s/tsz o A v $ritdSS
?!M n'd.' [3J PA GS 3+Z,
~
O'
= nomiass 2/An a rf a of s7ap
=
2.00
/A/.
S*I
=
psic o a v s r.e t s.1 os
.srup
=, f =5, 0 0 0 h"
= 3/8Z0 PSI cA t c us A fra G P R i t. o A v SrK45S
/4" R
/t $/ [2]
/ AGE
/$9, 7~
=
A f ft.s4 P TcMGud l
= r 4 So x /2
= 23+00 so. - 4 B C
=
10,t o ut cof///dsfa r
?
Q. / 6 1,y 3/et eA 7f y
.D
=
NoMswAL Bos r*
St z f
=
- 2. c o
/N.
S E /N/f/4/,
TfAJ s/o d fdsT
$ r d 17 j
2 3 4 0 0l0. /S X 2. 0 0 7'*lc.D
=
=
=
1$000 43 A
=
rf a ss/ /
17ses s s A nsA Of 2.000 8 UN 2A S Tv.3 i
=
2.77
/d.
S
=
P/rfl on s
$14E35 of
- Trop h-0 i
F;/A 76o00/2.71
=
=
28/60 f5/
e e ce e o m.m m e
e==
4'.
i.
9
/S~
W. fC: f Y 4 fi
$D ED t!
A t r'A c u e.7 t p r
/
U S - d o - 2 ': /
PA.TA wsf"!X,, vda.
0/ /tf 9J x r :f-123 un c - J S - 80/2 /
YA $ tc si 5 r.* / S S f//
S ~~.J O 40s/7 J
p.
2.>A:
N.1 Ts As &
r*fA ?
CJ.T /76 4 / vt o a
.BdTwtfH THf 7wa pdrHJp3 ef CA4 cut. A r/ N G s*RJ.: 0A D $ 7pf 33 l
/s Q ui rd Goop 447 US t/ S f THf H/ G H f /7 VALV2.
3/820 PSt witM os r 3 r n.t S 3 7 HEM, S, ' =
d o d C f a r~n s4 rio s/
/W o f: ;? 5.f to TAAf f rof f S $
dos / CfM Tnn r/o u o tA ar* /
u sf af su ro A e C o u d 's"
- z. d r u$
n 24 / l~ +.7 PA G d
// :.
Nord fan f HL Y!d Y / 'S Al Sus Y $
//#dY ro wHi r svo /r TH rHaz !A 2 3 Ar s ru o a c/ Y
\\
l co.varerica S.
su rHL TMa!ADED L fu G TH pf SrdD Nor sa 40a7AC7 J*V r rH THf NWr rH!
Srncss soacta rnA r/o a
,sA e ro /r I
wo as p af s!ss YHAN rHosf r? Z / sit 7~f D t
3r Hf75HY/.
AnoTHfn FA d ~fd M To c o a s / D f tt su S JJ. f G 7/ N G A
A L A s e d A B t. J VAL V!
r/
frxfss cA c ro /t
/s ras r rH f c o a c f u r te,4 r s o s /
s fMMZA9 M4o73 df ovM/7"we/?TH VMX & A 9.5
\\
A re &
F us L Y Moya21D sa con rie A s r To THE PLAY Ro o ts NH/cH A /Z d A 4 4 awA 3 4f toa (Js/
fMM f' 4 D 3
/c /r A
cows FA /ti S o n of svH/ f w/ /t fH
.A N ;;7
() Al V M st f A P S,
Ad /!/t To TH4
/d44 ows4G
/'A G 4.
'i<
/w v/ dod e/
THf s'0/tC G oss/ c co a s
- D 6tzA v~/ca s,
/ ~r A PP 4 A rt S RdA30N4346 To A P/4 '/
A Srn d 5 S c od e f N '7 7 A T' o u
- A c to n 6/
3.0.
/
7H E a K
S
=
- 3. 0 x Eldzo o
i b;
9 S Al dr 0 PS/
w/7H S T.? f s S
=
coac tu rrrA r/o a 4
i l
1 o
i I
/0
/ ^$
~
h/.fds d Y a
4-3/
k.S0 3 Bo.1!
A T TA C H ~]A ss:-
/
o :i - 3 0 - 2 51 PA 74 Mf rf.7, ts./c.
p,c a s Ps.c ? If-/23
^/.': -
6-do/d/
T4 s /c 03 sc M PA M. 9arl o/
>vH / TNoi% TH.- -
AND U/J 7*H :. i A 2 A d,7 M S 7.4 f
.C!A $2 4
/ d.t.
M A sc. ^/ G TH,3 CC M l'A M ' 5 0 9
/f 4 X f ' A /+/d D CA/
TH6 s#Af C & 2 /A/G
<TA G S,
j X
X
/
\\
/
\\
WHs T WO3 TH__
\\
No rf YHA T c/tfS75 A a :p d o o.* 3 A lt 6
\\ /
\\j
\\ /
/04 4 Y M*13 / y s f D.
V
.2 V
9 3
~
fY g
UN se l
\\ /\\
\\ /
\\ /
V V.
V 1
nouMDB2 C/tf S 7 A AJD s
A 0 0 T*
C P fson/AZ.
/~4 A r 4/E S $ 7 A A/ D l
A007 St*fCs//2 17 N d f d,*
264AWSZ Cf TH f//1 fu4L Y A 0 us/ D f17 poo 7 s TNL was ri o n p YHat4Ao3 H.a d!
c 4f5S STKdSS CCHCLM f/tA Tso+)
A +/ p G tl S A 1 4 /t f4 7/ 6 yf
$TMfs/GTH ft/Aa/
fM f O&
7'HKLA9 3, 1
l l
(
l l
~
s.
/0
/S W.fds ! Y
.,+-3/
/$!0 33s it A f 7A cH mf av --
/
u s - 3 0 - 2 51 PA t -? Mi rf.7, INC.
G/ /74 Ps og r ff - / 7 3 N14-Zf-doff /
7 4 sic 03 scM HfJ__SJ
0/,,_
W@f_M f @_._[_H_
_s.uo un rH.e s a.
ss.e.m. s...-
C D 2.
M A /C. d G THoS Cd M l'AM / S O N T&f
.:!A iDM s
if sXs01. A r NE D CA/
TH8 f/fft 4 0 /MG sA Gd.
l, A
n
/
\\
/
\\
WHI Y WQ T TH_
N C 1~ f YdA 7 CAf$75 AND M 0 3.~ 5 ARE
\\ /
\\f
\\ /
/06 4 Y MA D / U 3 f D.
V V
V 3
~
e s
U^l 1
\\
\\ /\\
\\ /
\\
/
\\d V.
V i
nouMD22 4'/tf 3 7 Adp u
szo o r o pti c ase t.
f4 A r TREST Adp
/C 0 0 f St*f Csfid D Ne tt.*
2fCAuff of' fHitrt futLY s7 p ysv p f p Moe r s TNS was 7,c n p Y H it z A o S HAdf o
4/S$
SrkdSS Code fM f/t A 7so d AND d if fA rd it
/A T/ 6 Vf SYM2dG7H fMAJ TH f ud THKLA93 V"
e m.-
w e
-y
- i. ja i
W. f 0 L f Y 3*
//
/5 3/,. 4o///
(dp sc/St A rfA cHMfN T
/
05-80-29.'
PA.tAMir! <, /s c.
Of
/z Po x 7 2*d. /2 3 pic c - ZE - Jo/di rA sk ob
.S. r./ D 4.:: 1.< S... c A c/ S / D BY j
P.T
_ a ei -
F: us o ?? /tA ~rt ad P/rf SSurr!
/N c.2Dfx to rA xt sa to A cco ua r rHf s r/e r a G coas rA a rs of S 7d D 3
^ ~' n c4 A M PZD MLMBLA$
447' u5 d.96 7"Hf A a A r r/ c A L MA TH o D 0/
$2 C ~rs o a
/ +. / 6 oa PA ca 1 30$
of n!sfiraAct
[ 5].
ry ! saa f M6raop
/ s. G//n a ed /AGd /61 of At / [Z].
.D,
=
- 0. D.
of co a r/ : ?
sute/A c!
0; f:Aadf
=
25.15 / d.
D;
=
- 1. D.
of coa rA c r su/z /A:s of
/tAacs w
- 18. 3 8 /a.
Ap$
=
Gasss cou rA c -r A nd A or pxpaGs
. 7 8.9 + (.T, '
.D; ')
=
c
=
z e s. + io.
N
=
auM21x of 3rups
= /6 d,
D/A ML 7fst of 304 r Mo4 4 3
=
2./2C
/ M.
A
=
A /E E A of 3 0 4. 7 Md4dS g
7464 0,'
N
=
=
S4. 7 /a.
- A,
=
Nrr c d rA c t A /rf/1 os f4Aaca o
A,e A
=
g g
= / 'f 8. 7
/M.
I
e man!Y 3 za/st
!2
/ 6
/d3D
.3/30/Si A r rA.:HMANY
/
06-80-25/
PA R A M.' rE R, sdC.
or.42 /'o n: 26-/25 a.cC-z d - do/o /
rA SK #3 S rd D
.S.. r t f..s.s.
4 A_.u..s..& _D_
~B Y_ __M Z/.o A D.__
P
_s s"L U S _ o f ' y rs M_G P R f 5 S t/ A _f COM T
/_,'
=
raidNNESS of MAMwA Y' c o vls't
=
- 6. 5 0
/M.
L
=
o.u s - H A L /
sf s fMG TH of TH/rfA D e
f d GA GEMEN 7
/d MAuwAY
/4 A dGL
=~
/. 5 0, sd.
~*
/.,
=
fM/Cxdf SS dp CdAMPfD MfMSfRS 2, ' + 4,
=
=
- 1. 0 0
/d.
6
=
v's 2 d C 'S M o pud u s of A44 M f M 3 d /E S
/c SPMtNG cod TANr 9/
4 A M ffD ' ML M Bf/ES c
A, E /L,
=
= e s. 3 e e
< spa.
A;
=
rf a s / i f sraass A tt f A of S/x76fa
- 2. 00
~ dun - 2 A S ru.;p s
/6 x 2.77
=
4-4.32
/s. '
=
L
=
A~/ffC 7/VS 4 JNG 7W Of S 70 2 S g
w
- 8. & &
/N.
K
=
S//t/aG cops rA N -r op S rups g
= A d /L g
3
=
S. 5 4 f 4 B // sv.
A K, l K,
=
- 5. / 7
=
F;
=
pa r t. o A v roser l' 8
=
NS A
=/4x 3/ azo x z. 7 7 g
- / 4/0 262 43
/
/
, - = -.,
9m
-w-y
7.
y e,
N /.n ! Y 3 26 lst
'S
+
idSD
.3/.5e r,Si A r rA C HM 4 " '~
05-80*'5' pA gAntrsn, sac.
or.42 Po n 22-/25 N<fC-Id - 80/E '
t rA SK d5 SruD S. r t /. S_S.
4 A.U..S_. d D_ - '3 Y_ PAS 4 0.A D s.
PLUS _ 0(f rA rs & G f o' 4 S S V A _f coa'T
]_,'
TH s t'NNf 3 S Of M A N+VA Y' Cd vd A 6.'50
/M.
4"
=
on f - MAL /
of s EMS YH Cf TH/CEA D e
E s) GA GEMEN 7
/d M '4^) WA Y
/4 ^ ^ /GA
=
/ 5 o, sd.
L, 7H/CKWf SS d/
C./ A M f f V Mf M BfA S L, '
+L
=
c t
=
- 1. O o sd.
E
=
Ye O N G 'S MopuAOs e/ A44 M d M 3 d/zS i
/c
=
SPMtaG cod 3 TA N r p/
.c4A &PfD MsM BliTS l
c i
A, E lL
=
e 4
= 28,39 f 43//a.
A,
=
rfa s s i f Srxtss A n sA of S/xrfad
- 2. 00 Bud - 2 A S rd.P S
/6 x 2.77
=
+ 4. 3 %
/M. '
=
L, f//sc rivt g 126 TH Cf f ru p S
=
8.00
/M.
K
='
S//t/NG des /S YA d ~7 Of STVPS g
= A
& /L g
3
- s. g + 2 ie/~.
=
K K, / M,
=
=
- 5. / 7 2
=
es ec o s a rosse f8
['
N S. A,
=/4x 3/ azo x
- 2. 7 7
=
s4
= / +/ 0 242
+3
/
/
<r
.-=%.
un
4 s,
/v..',J. 4 Y
..,j 3.
IS
' '5 g$l}
.il,32,* $ '
A 7 7A f ts s r f AI 7
/
.5~80*2>*
u PA L' A+ r e 7&T, t ss t.
C..=
Mi.**,2. ' "' 2"!-/E5
/J *:4 - Zf - 80/8/
7A 3 /c 03 seuc
.<reru:
.m 2i-px_E s a A :
etus sp e ex
. n< a pire s s uie r e s,9 7
- /
5
- m y pis
,4 ns t 71 7 or GA Sie ! r (i s. ss + /6. c 3)lz
=
= /7.26 i n'.
P
=
offMA ria G f/Zf s S v2/
s.
=
- zoo 'PS/G f
// Y DA d 5 7A 7/ C f+) 2
/d/[4 f e
=
- o. 7s s + G*P
= S/ As 75a zy F
=
7 0 7'A 4 doA D of STUD $
g
/
Gi +' 150
=
ft +
f
/,4/o 262
+
=
trK i + 5. s z t,+94,372 43 l
=
S
=
S7up S Tred SS uomiuAL
/, + 9 4, 3 7 E,// 4 x
/, l /V A
=
- z. 7 7
=
s
= 337/8 PS/
K, 5 SruD S rted S S co,v e sa rsr/ rs a
=
- 3. 0 x 337/8'
=
= /0/ /54 PSI f ' = f lN = /, + 9 4, 3 7 2,// 6 = 93400 48 P!x S tu p y
g 82CAUSd TH&
BoL 7"SD J o s r./ 7
/$
vf rz Y a z/ G /D, r
OPdte A -rss/ 6 P,Ef5$dMf
/s.t c /r f A s / 3 SruD SrMESS ass 4 Y
- 6. 0
- ?*
MdKd
~7MA H THS P/:44 e A ;;7 VALu!.
lS, 3 3 7/J/3/8 z o THA Y
/s, 5
=
g
=
. oa o i
-s r
i v dt
'Y
/0 g, psif'p 3 's.f i A r rA s i-r e-s t ai 1*
/
J 5 - S o - : 51
- f a
A s.
FA i: A M E T f d', W C..
Of M! *: ' ' 2A**E3 N# C
- I f ~ 00ld
7"ASK J3 s7o a S,- <Y c'A :/ SE &_ _ _E_ '/* De S / GN P2/S Sc/Rd ON4. Y G
- pr f..s a
-p s A M f t l ic J/
GA3kJT
(/6. So t /8.03),/2
=
=
/ 7. 2 fo sa.
P
=
2?6 sida P/7Essun S
=
?$00 P S/ G H =
ravns H y p ato s TA ?i d L a.:p
/ # ud
- e.7854 6'f
- " C.18 5 + >' / 7. 2 da x ?600 584,9+2 13
=
A, =
rea s s.: E S riz e s s s itLA DF
- 2. 0 c o - 3 u s) - 2.A
$ *fW 2
=
2.1 */ / d. *
}\\/ s N t/M 84 M of $7WP3 PLM M A.v w A y
= /6 5
=
71,u sic s Srx4ss os srup CA JSJ D bd
.1 Y D45/GN PMLS$uMd d N L Y' A/l M A, SdR9'i"2ls4x
=~
g.1 7
=
/3/98 PS/
S
= 26000 PS/
Att,$wA e s. 4
?on 5A-S20 Gir A 21 4 43 3 et/E3J, PA6L
/35
ll 1
4 i l e
- p. fos t Y
/ 14 31
/6
/ 5
/l0 b ' 3D-8 '
A 7 TA CHMf d '
/
0 6 - 8 0 =
s~ /
PAirA mf rire, sa c.
p.'
M19.n~' Y Z i - / 2' 3 N ': 4
- /- 30/.d'/
7Asx 03
.- S R 2.: 2. ;* S..s.#.:
/,
Ts.s a.*f fo Na st COMPA N Y CM A C /<f D, 5 YJ D 2
$4 r
set A *J W A Y O d o s/ f d usJt 7 3,
- TS s* Al'/ M A M Y A O - Z 8 *7lf o - / /
./ u s y / &, / 9 3r o Mffdas7 No.
z.
fs, ass, wasa
COM PA N f, d5W >' O M /<
5, TM d A M $ A / CAA.*
SO C/ / f Y Of
&9 dc., H A ^/sd /t 4 AN G 'N d A X Z A$Md 80/4 4 A ado
/#A d f f O' All' f V6SSJL CODS,
AV4dS
/d /Z cos s 7/ruc ison' CJ HJC.Lf A K Powd A
_.*.*.4.A d.7...... - 4 0. M.. P. d&.. d ^/ 1 5,
A.dff sJ:P/ Cf. 3
$ 4 G Y/ 0 4 ZZZ
- P/ V/ 3/ Q &
/
/
s
'/9fe d.P t f / o d 4
PJ Yd/7 sod K. A.,
STA6SS CG A/ C A N 1'!? A Ys 0 A/
24 S/GN
/A C TG A S,
///TH P K /N 7/d G,
JG NN W/ 43 Y /
3dd $,ss/4.
Mfw YO X /<
/
5.
JU V/UA4 4, A dB A /t 7 4;~., EA/G w dfAid G Cor/.St.DEMA ric as of f YR f 3 3, 5 f/r /s sa Aap S TA A dG TH, /967, M e GA AW - H/t 4 5.:..* *:
COMPANY, 2 414 Yd K /<
6 BA BCoc/c f W/2 C O >c COM PA d y' c/?A s se / D S 744 M 6f a tx A to x sv14 NW A y s rt/.p s A7 occa st
- 111, 4 4 7 Y d tt Of JULY
//, /9 8 0 (dKC/orf),*/ rem to w e rs /t S 764 t o (3f WlPG 6)
JAnySS H.
FA Y4 eK v
y
O e
. iJ -1 Item 7 of ATTACHMENT 2 Report W. WM FRACTURE MECHANICS ANALYSIS OF MANWAY STUDS j
by L. H. Burck Introduction This attachment presents an analysis to determine the critical defect si:e for stress corrosion cracking in the thread root region of the subject t
l manway studs and to determine the critical crack si:e for final fracture l
of a stud. The nominal stresses and stress concentrations utili:ed in this analysis are those which were determined by the stress analysis presented in Attachment 1 of this report.
Summary of Results 1.
The critical defect size for the onset of stress corrosion eracking at the roots of threads in the subject studs is 0.070 inches for i
normal operational loading, exclusive of any safety factors.
2.
The critical crack si:e for final fracture of the studs is 0.40 inches beyond the thread root for ncrmal operat ional loading, exclusive of any safety factors. This value does not reflect the unloading effects of prior crack propagation by stress corrosion which would result in a larger critical crack size for final fracture but could also accelerate cracking in neighboring studs.
Analysis Stress Intensity Factor In calculating the stress intensity factor for a crack emanating from the root of a stud thread, the thread form is modeled as a hyperbolic notch having the same depth, width, and stress conce". ration factor as a thread in the non-engaged portion of the stud.
, - p ee = f
.n
A2-2 P
600 n
g
\\
/
\\
/
d
/
/
p hyperbolic notch nf n
For a 2-8UN-2A thread (1),
p = 1/3 = 0.125 in.
f = p/3 = 0.125/8 = 0.015e in.
d = (2.0 - 1.847)/2 = 0.0765 in.
Stress concentration and stress intensi*y factor solutions for an isolated cracked notch of the above geometry are presented in (2), page 19.13,
)
- 2c -
?
n b
2c = p - f = 0.125 - 0.0156 = 0.109 in.
i.e.,
e = 0.0545 in.
g crack n
b = d = 0.0765 in.
a i
If The stress intensity factor is given by, Ky = e6 F(a/b c/b) where, c:
nominal stress based on gross ares (major diameter),
load per stud = 93,400 lbs. (Attachment 1),
gross area = 1r(2.0) /4 = 3.14 in!,
a = 93,400/3.14 = 29,700 psi for normal operating conditions.
A2-3 F(a/b,c/b): function of a/b and c/b which is given in graphical form in (2), page 19.13.
The stress concentration factor for a isolated notch of this geometry is also given by (2), page 19.13,
= (1 + 2b/c)(1 + 0.122(1/(1 + c/b) }2.5) k g k = 3.93 However, because the thread form represents a series of notches, the stress concentration factor is less than for an'* isolated notch of the same dimensions; in the present case k g 3.0 (see Attachment 1).
Thus the factor a = 3.0/3.93
=
is incorporated into the stress intensity factor expression (in the limit for very small cracks, F = 1.12k ), i.e.,
g Kg = ae6 F(a/b,c/b).
In general, this expression is set equal to a critical value of the stress intensity factor, such as the threshold level for stress corrosion cracking, and the critical crack size is determined by a numerical iteration procedure.
Stress corrosion cracking of a material in a particular environment may be expected when the stress intensity factor, K, equals or exceeds the g
threshold value for stress corrosion cracking, KISCC, f r that material and environment. Literature values of K
~
for quenched and tempered AISI 4340 ISCC steel tested at room temperature in a sulfide / chloride environment range from 17.5 ksi/6. for a tempered hardness of R 39.1 to,a value of 40 ksi/in, for i
C l
a hardness of 'IC 29.4 (3). A value of KISCC = 17.5 ksi/in. is therefore I
l
--4,,,m
,p--,-
,,--,p--
-w-'
i i
l A2-3 F(a/b.c/b) : function of a/b and c/b which is given in graphical form in (2), page 19.13.
The stress concentration factor for a isolated notch of this geometry is also given by (2), page 19.13, i
= (1 + 2b/c)(1 + 0.122{1/(1 + c/b} }2.5) k g k = 3.93 t
However, because the thread form represents a series of notches, the stress concentration factor is less than for an isolated notch of the same dimensions; in the present case k = 3.0 (see Attachment 1). Thus the factor a = 3.0/3.93 g
is incorporated into the stress intensity factor expression (in the limit for very small cracks, F = 1.12k ),
i.e.,
g Kg = a % F(a/b,c/b).
In general, this expression is set equal to a critical value of the stress intensity factor, such as the threshold level for stress corrosion cracking, and the critical crack si:e is determined by a numerical iteration procedure.
j Stress Corrosion Cracking Stress corrosion cracking of a material in a particular environment may be expected when the stress intensity factor, K, equals or exceeds the y
threshold value for stress corrosion cracking, KISCC, i r that material and environment. Literature values'of KISCC for quenched and tempered AISI 4340 steel tested at room temperature in a sulfide / chloride environment range from
"~
17.5 ksi/in. for a tempered hardness of R 39.1 to a value of 40 ksi6. for C
a hardness of RC 29.4 (3). A value of KISCC = 17.5 ksi 6. is therefore
,=
A2-4 considered to be representative of the stress corrosion cracking resistance of the stud material at the maximum hardness level measured for the three stud bolts examined (R
- 9. ).
us, for the onset of stress comsion crachng, C
Kg=KISCC 8
Re critical defect size for the initiation of stress corrosion cracking, ascca is thus calculated from th1 previously discussed stress intensity factor expression, yielding, scc " O' a
for nor=al operating conditions, exclusi$e of any factors of safety on either the calculated stress intensity factor or the assumed value of K
It is noted that, because of the stress concentration effects of the threads, a safety factor applied to the strass intensity factor has a considerably greater effect on the calculated critical defect si:e than would be the case for a surface defect not associated with s notch or other stress concentration. For example, a safety factor of 2.0 applied to K
results in the calculated value of a being reduced to 0.003 inches ISCC sce in the present analysis whereas for surfacecracks away from stress concentrations, the calculated critical defect size would be reduced by a factor equal to the square of the safety factor, i.e., by a factor of 4.0 in this example.
Final Fracture Final fracture will occur by a brittle mode when the stress intensity factor of the stress corrosion crack reaches the fracture toughness of the stud material. However, a stud will effectively have failed if net section yielding occurs prior to that.
In the case of final failure, the crack sizes involved are substantially 4
larger than for the initiation of stress corrosion cracks and, therefore, the previously used stress intensity factor is not applicable as the finite i
o 7
v gy m
w
7 t ;.
l A2-5 si:e of the stud bolts must be taken into account. Conversely, the stress conctntration of the threads will have little effect on the final critical crack si:e.
The case of final fracture is modeled as the stud being a circumferential1y cracked cylinder, the stress intensity factor for which i
is given by (2), page 27.1, d load = 93,400 lbs.
U 2b crack
",.27/
b = 1.0 in.
MJ
-a 2c a ;,
/Ea F (c/b)
K
=e 2
net 2
J
- where, e
- net section stress, o
= 93,400 /(vc )
net net F2: function of (c/b) which is given in numerical form in (2), page 27.1.
I a
For AISI 4340 steel heat treated to a roca temperature yield strength level of 165 ksi, a representative fracture toughness is KIC = 110 ksi/In. (4).
Utili:ing this value with the above stress intensity factor expression yields a = 0. 621 inches for brittle fracture. Subtracting the depth of the thread gives a critical crack dimension of 0.54 inches beyond the thread root, t
-+
4
I.
A2-6 exclusive of any factars of safety. This calculation does not reflect load relaxation effects which might occur as a result of prior stress corrosion cracking. Such bolt unloading would result in increased critical crack sizes if the studs were not re-torqued subsequent to stress corrosion crack-ing. However, such unicading would transfer pressure loading to adjacent studs and could thereby accelerate cracking in those studs.
At the critical crack size for brittle fracture indicated above, the (hypothetical) net stress would be given,by, net = 93,400/(s(1
. 621)2) = 207,000 psi, e
whereas the studs tested showed room temperature yield strengths as low as 145 ksi and tensile strengths of 158 ksi. At a temperature of 550 F, 1
these yield and tensile strengths would be approximately 140 ksi and 150 ksi, respectively (5). Therefore, overload failure of the studs would be,xpected
{
l to occur prior to the brittle fracture considered above. Considering t
that loss of preload would effectively occur upon net section yielding, the criterion for failure is given as, y
o
= yield stress net 93,400/n(1 - a)2 = 140,000 psi which gives a = 0.54 inches or a crack depth of 0.46 inches beyond the thread root, exclusive of a factor of safety. Again, this calculation does not 3
consider the effects of unloading due to prior crack growth which could result in larger critical crac' sizes if the studs were not re-tightened.
References 1.
T. Baumeister, E. A. Avallone, and T. Baumeister III, Mark's Standard Handbook for Mechanical Engineers, Eighth Edition, McGraw-Hi!1,1978.
2.
H. Tada, P. C. Paris, and G. Irwin, Stress Analysis of Cracks Handbook, Del Research Corporation, 1973.
i
4, r p.
e A2-7 i
I 3.
R. J. Bucci, P. C. Paris, L. L. Loushin, and H. H. Johnson, Fracture Mechanics Consideration of Hydrogen Sulfide Cracking in High Strength Steels, ASDI STP 513, 1972, pp. 292-307.
4 J. N. Robinson and A. S. Tetelman, The Measurement of K on Small IC Specimens Using Critical Crack Opening Displacement, ASDI STP 559, 1974, pp. 139-158.
5.
Metals Handbook, Volume 1, Eighth Edition, American Society for Metals, 1964.
l J
Checked by:
e Robert S. Dean, P.E.
4 o
l
L, i
a ogf.r.:! Y 3jzgjsi
/2
/6
~
/dbD 3lI.o /Si A r rs: can s a s-
/
PA /7 A M f YE R, /dC.
of,41Po.c f ff- /2 5 NXc. z g - 80/3 /
7'A SK d5 l
S 70 D S.r t f. 3.S.
4 A W.S 4.D.
'B Y _ P A ! 4 0 A D._
e PL US O K r A '*/ N G P/E f S S UK_f 4*o d 7
/_,
r/4 s CNN!S S Of MAdkvAY de vlit
=
=
S. 5 0
/M.
L,
=
ON f - HAL F of
.: adG YH O s'~
TH/c6A D f & GA Gf Mdd 7
/d Mi4N WA Y s'4 A A./Gf
/. 5 0, /J.
L,
=
TM/ Ci<dd S S CJ A*+ 1 Ff P MSMSERS 4, '
+l
=
e
=
- 1. 0 0
/d.
.5
=
YGDA/G'S Mopulus of A44 Mf M B d %S 1
/c;
=
S/M /NG Ced3 7A N ?
0/
CL A MP/D MEMBfRS c
A, E /L i
=
c
= es.sg e
< sps.
A
=
tra s / i a
$7xtss A x1A si'~
g s/x74fa
- 2. 00 auM - z A s tu p s i
=
/4 x
- 2. ~1 7
=
+ 4. 3 2
/M. '
L
=
A*//f o r/ v'd L ENG TH of S rd D S g
X 8.00
/M.
/d
=
S /5 /^/G Co+/S TA d 'r c/
SYups 5
= A
& /4 g
3
=
- s. e + 2
< sp.
/E.
K,,/ M,
=
- 5. / 7
=
1 F.
=
pie f t o A v ro/ce r i
F3 N S, A,
=/dx 3/ ato x
- 2. 7 7
=
= / 9 / 0, 2 4 2 43
/
\\
j
-,w-e
.- --