ML20066E509: Difference between revisions
StriderTol (talk | contribs) (StriderTol Bot insert) |
StriderTol (talk | contribs) (StriderTol Bot change) |
||
| Line 2: | Line 2: | ||
| number = ML20066E509 | | number = ML20066E509 | ||
| issue date = 12/31/1990 | | issue date = 12/31/1990 | ||
| title = Nonproprietary Steam Generator Tube Plugging Limits Presentation Matls | | title = Nonproprietary Steam Generator Tube Plugging Limits Presentation Matls | ||
| author name = Whiteman G | | author name = Whiteman G | ||
| author affiliation = WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. | | author affiliation = WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. | ||
| Line 17: | Line 17: | ||
=Text= | =Text= | ||
{{#Wiki_filter:}} | {{#Wiki_filter:, ', . ., | ||
. ~ # , | |||
~ " | |||
." i i , i'. [d,,!,g' | |||
: p. 3 $4 | |||
''' 7.l ,, - | |||
- i - - | |||
. . - - ..- . . Je *- 6 | |||
.' ,:r ,' .-' .' ' .~.- . 5 ** | |||
~ | |||
. .s - - ~. s 'l . i. .e . .. | |||
,f* $ E. . ' ' | |||
".*U' ' | |||
* g ,% .~: . . . ' * . | |||
/M.'*. f, . y,,g g ! . [,.q.h- "'*' . *v: . .. #.>. | |||
* , . - - .. .. ~. - - - . | |||
. * .' .. - - "L. c | |||
- f, d. ~ j I ;\ $* ; , '* "; . ,.hI '5'. * | |||
* //?.",j[.}- ,.I 4 ," , | |||
; . ? g* f.. ,,,'..;.._., lJ f, E,y , j , " , ' , f s - | |||
. . ; a , . f * .'* | |||
* I t [ );, ' \ ^' , | |||
,._n' n* | |||
. _ . , , ; - ? ' ,. . . . . ' . '".- | |||
5 | |||
'er:- * | |||
. j.' N , | |||
$' _ .a. . . | |||
ei | |||
- ' ... .cc ~ - .& r' .. | |||
,' . , . . . . . ; .c : . | |||
^y , y , ..' .' * ; U ' . ' . ,. - " l . ,. ', % - | |||
f . | |||
g. | |||
)- ' | |||
"*'.,'_k | |||
* ~ ~ D | |||
!. '. . n s' ' .' ' | |||
' h i! 3, .-... . . | |||
. '. * ?: % ,7-[ T. - | |||
he . ' '' ' ' .. 'UM@ML . | |||
i | |||
' / . . f *5. I ; | |||
* 1 | |||
. ,n t 'I,1, rter .;%* gis(Wpyp .h4% | |||
t | |||
-Q. th At / ~,e' j | |||
,7 | |||
'k-- | |||
t | |||
.. Q . .. , .. '. ; . : e . .. .- - | |||
f' [' i, h*yby'& .. | |||
j (M .- * * . 6.'J .9 | |||
"'*ai, s ,, . | |||
*h' ' | |||
[ 4.', '. ; 3 b 'c. ' ..,. , -' !,i,[i | |||
''y | |||
, p ;f.) K vil Q.. '' | |||
. , ., ..}*,j' . ,7 '; } , . . v . . , - - . ,.Q ' l , ' | |||
. /* ' - :, ,l | |||
., g ,1,t'c f. . "'. . , . .= :: | |||
.p , y(.'q 7l) . .; 5 ; .. _ ; ' , . ?. ' | |||
' ; ' . ' '..L . ' . * - *3' 9 y'.y? .. " . ' . .. : | |||
.) _ . ., [ . ; . ; . . . - ;L.- | |||
5.y ? | |||
. ;. . .; 'q;, | |||
,[ ; ;<_- .b .[;p.y y ;. ; { _ ., 'g . , ,. v ,q. (_,.:}. , | |||
,. . . . . ,, . . . .a | |||
.( | |||
., , 9. [ , . ,' | |||
p v ' _.;.9l. ' _ y . ,%g. _ . , ' ' . . ;f. ,_ _ , | |||
' >: \.'. , _ - '2_._.. _ , ;)._l f.9 ; f.;: , . ' ..; ' . ; 7, _G_. . | |||
. j - | |||
~~: . | |||
?. V '. _ , :- - ', _' ~ ? ? ' '; bb b . Nl , .,Y $ i . l - _ f ?. l 3 ', '. _ [ . i " l . . 7~ I.*.,'. * :. i. ;Q;" | |||
f;f ' | |||
6 | |||
; .l . | |||
,, '. - c . , $ gJ . ?ll3.$ * . ' . ' | |||
n. | |||
Nll, . | |||
5 | |||
{ q g,Y ;. ;, W * ' ?kih ".'l,W ' -l'.l , | |||
' I' l . I . .? . .n; '' f. .. ' | |||
. 'a .3:,g , ,o y , ' . . < y., | |||
t . | |||
1.' | |||
j j. , ;. ts. [> ., % . | |||
. i | |||
, -.,0.... | |||
.4.: 4 | |||
+**l>' ,. .- | |||
i.. | |||
.;,- := , . | |||
P | |||
- *~ *, ' . , ,'' | |||
i 6 . | |||
'. g'I I- ,. -'; .. ..% | |||
t | |||
,., ..;- *k "; - .'.-l.,'. - | |||
1' q 7'-(. ' . .y." ' y%. f. .,1 . . * | |||
',]. ; . . . , * * .' .' :c Q p pii / M :;a < E:J- 1 d F'';. 'tc | |||
:Y n- | |||
! l u . | |||
5 I S . M.' . . f..: : .$ '[ ,. . . | |||
i p/ . ., ;... . . " - , . '' #f . * . . u.( s .,' | |||
S ,4n .c. - | |||
$';. ;,:.'.*3y - ' .' / E... t . | |||
f, "'l 3 .' | |||
: l. ' | |||
.; i ,ty,' .p%,..**.v. ' . | |||
_;.,_ ,,_.,u.., ;, ': ,' | |||
,i 4 . (T , ' d '. '' ' '" | |||
'y'. ' | |||
. , i { '7.,[ . ', g*. .*Js'(.- '-' ,.l,. 'J," ,,s, '-'' ':. i . | |||
3f , .!"' , ' ' ' , ~ [ ." , | |||
't-l', , .. .- | |||
:3 | |||
'y _ .^ _ | |||
. I; . ? ' ' ...Y v" : .g'. . , ' G -g , . ' , - ,'-*- ,c | |||
' ; p, i ;. ' ' . .- lp : ' .. | |||
,--7,'. .... Ar .ic *( y,. ?L'-f a}l ';.n, ;i ',.'>,.' | |||
. (j . i & .7. T ;; . 'af J **a ' . 4/c. | |||
. , ' g : a w. ; ,* . . ' . :... . : ..s% | |||
. '.. 3'(' f ,) . 7 $ ~ . | |||
z. | |||
. ; . } | |||
3' ,,''- | |||
.' ' -, - , ,.. .j ,, | |||
g" 4.-..;g- | |||
= | |||
$- ,, y.g . .. | |||
9.., * ,- | |||
a- ' | |||
' ' . | |||
* i- ' | |||
. 1. ,,. | |||
** .',.J.l' '. . | |||
.. t | |||
,\, kly' w D' hl .u.. ?Miq n. .= p- ?.T *;- " ,' ' - E: | |||
' .m RI. . i' ' Ys ' - | |||
~ , ,. ' . . : g l,' $ zi' i r :.:;.; .',-. | |||
'V' - | |||
.'' ' ~,- '?, | |||
, 'y r - p . ' ' y[.. ', [ '. .; 2 | |||
'h 5 ), . $ [ ' .,^ ". 4 -, , ' . . ' i .. -jc.9 | |||
. I (;I n' 'l ',[' - ' - i: ,+'- ' | |||
,' ' e' ' | |||
...I'. ' d', ..I. | |||
',' jNj:.'7 :b l''. t c . i. . | |||
i.4 | |||
' ' . , , '.',i * ' .. i | |||
~$', . , ..- 'yb -; * .' ., ,' | |||
g 5 | |||
;fN- . | |||
3'. y . . - ,g , . , ., , , | |||
.: i.' ' .. -' ' | |||
. . . . ' . Y., yl, ',',' - . ..l ,' ^ ; | |||
*l '. [. l I- .: - | |||
)..$,., j+ .. .s. s. . - ,, . . , - '.''e - . p ,. - 9 < | |||
', [' | |||
' " ' N | |||
.' * -g i | |||
.* y...kM..'.$.M^:'.;;..,.' * | |||
,i* | |||
. .,..,(, s- .. . . , ,. .. _ . ' , ' ' - , | |||
..,+ | |||
p s i | |||
, [ ;g:... jy i.l , .. . ;; ** '. | |||
'e',"-. ; - | |||
., ' .. ' . . * . . - .-~i;. '<,i,. ,.l .,. .i _*' . ' . | |||
-..l,. '.' | |||
p r- '', ;. . . | |||
i . S | |||
+ ; .- | |||
.r, ...y s | |||
, . , . .. .- a f- | |||
,'('.. . , .:. ,{ 'g | |||
.Q' st d,, ,s 1 h{;g.{p.,n , ,- ' | |||
...e | |||
: - ..p ', ,' .' [, ;, | |||
(, . .; | |||
u . . ' ' / . \, .(. . y* , . | |||
i e y .r . . g ': - ys . | |||
7 | |||
' :< g.. .D , ' : ,*;i".'',~?- #- | |||
N ,- '' ' | |||
t | |||
.1, . ' . - - | |||
f ' ' | |||
4 2[;.* E $ l4 l.\.' . . . . ''sT l' ' , ' | |||
,..d ' _ ' .' ,'.;.: ,. ~. I' ' ' l.' 'r, . [:?'.y' :.;.* | |||
\ }f | |||
. ' y .1; _' N. .;- i' ".: " . .g' . L: . '. _ . y . . 'l'. . , c .- - - | |||
. ,.l ,. - | |||
' (.; | |||
....l,' y. - | |||
;J . . | |||
if.@/'' | |||
sk r O .''' .. ' " ; ' ' '. N .. :.- :* ' - | |||
. - ',..'- J" ' .' f | |||
: j '. . '., ., '-;.[- .'. ' | |||
Y.Y f,_g ' lc ': 0 ' .[, ; ? .'f ' Li) . .j.y ' ';f" - | |||
. ''':.h d \\ ,' . . .lN . | |||
; . ' . - I' . | |||
l'"l1 ) 5,% ,* ;'. ' . J;. , - - ..i" .. . . .p ". .; - | |||
. - - 'g . | |||
. g, f P. . * | |||
.'N[ ; ! , . - - | |||
."f , . , | |||
V &. ij . | |||
? 4_. ', . ~ ,. 3' y. .' ' ' - | |||
=.,,- l',.5 . . | |||
6 ! '';''.... - | |||
''y | |||
' ] _l : 3 .c ' r. ..'. .... .'-. , ; , ~ L ' . ' l_...,'?, | |||
'\? 1\ w -i '.y kT_'S' - | |||
. . '..e. . | |||
' ' . 'd '_. l} .Y:': '. l$ . Rh? .. .. ;[ . | |||
'. ? I , | |||
' ), ' - '' - '.:' ' | |||
.p..' ' | |||
.h " " W. ' . _ ' .'' | |||
.'': ' ] ' w' ~. ' . . - , ' : h '.?l . . .., .-4-fIf C,)p',.'l A Ti | |||
\ | |||
;; t.- #,* [, ' ' ' ;I,: | |||
, 7 ...,.[. , | |||
l.: y. , . --- ,. | |||
' ;- ,,p,p;.;:.s.. -; : . .. '' | |||
o s.; d s ,q ?'-y < ' .s. '.f,j * -u .e | |||
* ** *m gs. | |||
'.1, 'M ii .," 7". i ( ' ) ;, Y..y - .i. ,. 4 l;,# | |||
.~ y - i: a ,,; y 'Q.lyn, '' .1'. ,s'',,: [- U,.'E- -[ | |||
: 5 , , , - - . .. , , . . . , . ~ . ,. , . . | |||
c ..g- | |||
..s.. | |||
+, " * | |||
,y - ' . e. | |||
j (i h ,p ' ,; . Q | |||
. . . . . . , i | |||
'f . . | |||
.\ 4. ". . ') ; ' ? ,s'..., ''_, f-* * * | |||
,} 4 ;t. , | |||
;i,- ,,, . . , ,. ,. . . , ' , . - g.- '. .. . . | |||
s d.,,. , | |||
-l, y | |||
'.,' ? l. - | |||
W *? l' . ',.*- | |||
N? . * .- " | |||
i l * .."* 4 . ' | |||
y .; ; W' N.--: *. ',-- ~ - . j , ;' .*- - : ,,.v.,.. y' ..: .'y:;- | |||
a, y. :, -, .. ,g.; | |||
ez':.,a? .. cx. ^p= * .:z.. ?- | |||
j'. Y' &Yl,l,' l's'.Y v. e | |||
+ , . l - f'''; fm ..* . l,M. . n . ?p',h;' - | |||
. , | |||
* l;0 . M. [ , . '4". M . ' W | |||
...a - - | |||
,, .g ' | |||
. h;i'j n.,;. 7 t L ''' | |||
' r:, ' . - | |||
'":9 ''**'' | |||
; 'y g l-[$.,'f f 4 | |||
'A ' | |||
%> ;. b, !',f',','; . p' . ,. l,il r : | |||
',W;' V- I5 | |||
. .'.,; T''. n: > 'l | |||
: h. ' | |||
' -- i.*u .;_ | |||
Ml.*l: ? }'lg' } -q-10f.d[,..+ ..... . , . ' .':."["','*. -'.*- ; - | |||
%- 4 M % .% ' ,.% . c l .; h gl.', p l 4 % . '%,. b'.W ':g, '< | |||
m' . l- l..%:}l,.&' . , . -.' x4-_, 'Y{ , %$sl '' _ l k ]'....: | |||
: y'-- .. i | |||
;'e- , | |||
ft n | |||
.Q * * , | |||
' 'n | |||
:,; ;[ | |||
,m q_:;.c | |||
. w;.',-p.l4.};lly: wt g .- , . | |||
_ :...vwn, l } jf,l,r* : u ;y,t L, ..,m. m;:: | |||
_.t .-: . . :.,..v,. a | |||
. ;:*.; ... . - .-; .- c. ..:n .(,:~ ;, ,:. . | |||
-m Q;%y a .+ .. . n . :n.:.c/ ~;, | |||
q _a. . | |||
.'i- N ; | |||
.a . 'hw(A,)w;hh; | |||
. 9 m v. : a..% M. - | |||
~.kY wsN3.., ,;'.h(c. | |||
O:% 9 , Y '*O c. . ;,,;- | |||
; +. , 8 . , | |||
7- . | |||
7.[ | |||
.a f,, (v. .ih , v. - cf.h., w.h. | |||
.x m . a ,43 m,:a .P . ' 'm m .; | |||
. -; ~c v y, ..4.>n.(..".i L E gg. f.N ). 3: g~9;E::g. | |||
S. w. 4. ') ' ' .; | |||
[j.L - ~:-,,, - &. , e;?m.' :S% 6 g: | |||
..n g g , s. , y . y?. L. | |||
; y:7 g+73 ;.y v4 wm w lg,, mm . . ;wg. y. q,~; w . . L' .lg,h c | |||
am Io12200se 93o197 If hDR ADOCK 0500034e M /fy.,y Q 7? Q Q . % .'.',. Q ,j,) | |||
L h'M MMA ;g,, | |||
h.::'gP] | |||
"!5t Ek __ | |||
PDR | |||
sg.hsWJiG-40 FOR UNRESTRICTED DISTRIBUTION DATE.. _ | |||
W EC 1 | |||
I 1 | |||
1 | |||
-q 3 | |||
1 9 | |||
l 4 | |||
3 1 | |||
d 3 | |||
1 1 | |||
O 1 4 | |||
j a | |||
WESTINGHOUSE PROPRIETARY CLASS 3 q WCAP-12804 i | |||
I d | |||
i i | |||
STEAM GENERATOR TUBE PLUGGING LIMITS i PRESENTATION MATERIALS December 1990 G. W. Whiteman l | |||
l l-1 l\ | |||
l WESTINGHOUSE ELECTRIC CORPORATION I Energy Systems P. O. Box 355 Pittsburgh, Pennsylvania 15230 l | |||
(C) 1990 Westinghouse Electric Corporation, all rights reserved. | |||
:) | |||
WESTINGHOUSE PROPRIETARY CLASS 3 Th'.e proprietary report bears a Westinghouse copyright notice. The NRC is permitted to make the number of copies of the information contained > | |||
in this report which are.necessary_for its. internal use in connection with generic and plant specific reviews and approvals as well as the issuance, dental, amendment, transfer, renewal, modification, ' | |||
. suspension, revocation, or violation of a license, permit, order, or regulation subject to the requirements of 10 CFR 2.790 regarding- 4 restrictions on public disclosure. Co)ies of this report or portions thereof made by the NRC must include tie copyright notice-and the. | |||
proprietary notice. 3 l | |||
- -_ -- A | |||
:i A meeting-was held on November 6,-1990, betweenfAlabama Power Company, Westinghouse, and the NRR-to discuss alternate steam generator-tube plugging criteria for the Farley Unit 2 steam generators. | |||
The following topics were discussed by Westinghous'e: | |||
: 1. Overview of the Farley Unit 2 Assessment | |||
: 2. Farley 2- Specific Tube -Plugging Criteria -for Expansion Zone Primary Water Stress Corrosion Cracking in the Roll Transitions | |||
: 3. Steam Line B*eak Leakage Limits for Farley. Unit 2 ! | |||
: 4. Farley Unit 2 Eddy Current Inspection Summary 5 .- Farley Unit 2 Tube Support Plate Criteria-i l | |||
ODSCC AT TSPs FARLEY-2 PLAN TUBE PLUGGING FOR FARLEY-2 1990 OUTAGE O PLUG TURES EXCEEDING 1.75 V0LT AMPLITUDE O BASIS | |||
- PREVIOUSLY APPLIED FOR DIS IN 4 FARLEY - 1, 2 OUTAGES 0 NO LEAKAGE ATTRIBUTABLE TO INDICATIONS AT TSPS | |||
- SUPPORTED BY PULLED TUBE, FIELD LEAKAGE EXPERIENCE AND LABORATORY TESTING AS A CONSERVATIVE, NO LEAKAGE TUBE PLUGGING LEVEL | |||
- SMALL GROWTH RATE FOR INDICATIONS AT TSPS SUPPORTING DATA O CURRENT EPRI PROGRAM TO DEVELOP PLUGGING CRITERIA FOR TSPS | |||
00S00 AT TSPS EPRI ALTERNATE TUBE PLUGGING CRITERIA 0 DEMONSTRATE EITNER OR BOTH OF: | |||
TSP CONSTRAINT TO PREVENT TUBE RUPTURE IS PRESENT AT SLB CONDITIONS PLUGGING LIMITS PROVIDE ADEQUATE MARGIN AGAINST TUBE RUPTURE EVEN IF TSP CONSTRAINT IS NOT PRESENT 0 Tw0 PARAMETER PLUGGING CRITERIA BOBBIN COIL VOLTAGE AND DEPTH INDEX LIMITS MUST BOTH BE EXCEEDED FOR TURE PLUGGING VOLTAGE APPLIED AS A CRACK SEVERITY INDEX BASED UPON VOLTAGE DEPENDENCE ON CRACK LENGTH, DEPTH AND LIGAMENTS (VOLUMETRIC FACTORS) | |||
VOLTAGE, DEPTH INDEX LIMITS ESTABLISHED BASED ON CORRELATION WITH POTENTIAL FOR TUBE LEAKAGE O LABORATORY INDUCED CRACK SPECIMENS, PULLED TUBE DATA AND FIELD LEAKAGE EXPERIENCE USED TO ESTABLISH LIMITS 0 PLUGGING LIMIT TUBE PLUGGING IF: | |||
AND V>VL-VNDE - VCG D>DL-DNDE - DCG 1 | |||
l APC reR 00 SCC AT TSPS VOLTAGE / DEPTH INDICES VOLTAGE - CRACK SEVERITY INDEX e | |||
FEASIsILITY EC TESTS PERFORMED 9 " | |||
VOLTAGE INCREASES WITH CRACK SEVERITY WITH INCREASING CRACK LENGTH WITH INCREASING NuMsER OF CRACKS OF SIMILAR LENGTH WITH INCREASING NuMsER OF CRACKS AROUND Tust CIRCUMFERENCE WITH LOSS OF LIGAMENTS AVERAGE DEPTH INDEX e | |||
AVERAGE DEPTH (PHASE ANutt) USED TO SIMP INTERPRETATION AND IMPROVE CONSISTENC ANALYSTS AVERAGE CRACK DEPTH AND CRACK -NETWORK CONTROL LIGAMENT FRACTURE AND THUS LEAKAG CONDITIONS | |||
8 l'fO'' Z '?v | |||
_ i _ | |||
575y t | |||
92t, 3 | |||
a | |||
, c I.97v e | |||
* y E_ a | |||
, ; 3.59, b W f | |||
= | |||
4 k | |||
A _ k4<asm 4AbM@OM MAe 4 mao 4 w.- - as6mmmm r' a es--,ar- - avs-.m-.-wA- nv u.-,- m.- ---------v---- _ - - - , , . , - - . - - _ _ _ _ _ _ _ , _ _ , | |||
4 | |||
~1 1 + | |||
_ Z.0c , 1 l | |||
l l | |||
l l - | |||
i 1 | |||
i I | |||
-.] $ | |||
I l | |||
l b , | |||
~ | |||
\ ._ | |||
-g . | |||
i 3 | |||
1 - | |||
u_ - | |||
7 1 | |||
E l | |||
l . | |||
l e | |||
'' ' ' ~ | |||
Y | |||
- r 7 | |||
~ | |||
.[2 h- | |||
}} y= ! | |||
y e | |||
2 i_ | |||
? | |||
e 9 | |||
EPRI PROGRAM APC ron 00 SCC AT TSPS NDE EVALUATION e | |||
MODEL BOILER SPECIMENS e | |||
DOPED STEAM SPECIMENS e | |||
AVAILABLE PULLED TUBE DATA ALTERNATE PLUGGI'NG CRITERIA e | |||
MooEL BOILER SPECIMENS e | |||
PULLED TUBE DATA e | |||
FIEto DATA Fon LEAKING TusES INFLUENCE OF IUBE DENTING ON LEAKAGE e | |||
FATIGUE SPECIMENS e | |||
DOPED STEAM SPECIMENS BURST TESTING e | |||
H00EL BOILER 3PECIMENS e | |||
6 DOPro STEAM SPECIMENS e | |||
EDM NOTCH SPECIMENS | |||
EPRI-PROGRAM APC FOR-ODSCC-AT TSPS l | |||
t PULLED TUBE AND FIELD DATA | |||
- t i e PULLED TUBE DATA SUPPORTS < | |||
~ ~ VOLTS (UP TO - | |||
l 1004 DEPTH) AS ACCEPTABLE (NO LEAKAGE) l t | |||
e | |||
-S t | |||
FIELD LEAKAGE EXPERIENCE (3 TUBES) ABOVE , | |||
VOLTS , | |||
- .y e INADEQUATE DATA IN ~ . VOLT RANGE RANGE OF DATA NEEDED FROM MODEL BOILER SPECIMENS LEAK RATE TESTING OF LABORATORY SPECIMENS i | |||
e i | |||
CURRENTLY INSUFFICIENT MODEL BOILER. SPECIMENS | |||
! TO CONFIDENTLY ESTABLISH VOLTAGE-CRITERIA DIFFICULTY IN GENERATING MODEL BOILER SPEC1 | |||
[MENSWITHTHRU-WALLCRACKSAND- | |||
. . VOLTS (LOWER BOUND OF MB LEAKERS) e SLBTONORMAL_OPERATINGLEAKRATERATIOB0UND BY FSCTOR OF ' | |||
~ | |||
VOLTS) ~ | |||
INDICATIVE OF INSIGNIFICANT CRACK DEFORMATION-UNDER-SLB CONDITIONS l | |||
e TUBES _CpACKED1 | |||
~ | |||
SHOW NO LEAKAGE EVEN AT SLB CONDITIONS (8 SPECIMENS) e MAGNETITE PACKED CREVICES REDUCE LEAK RATE COMPARED TO OPEN CREVICES (3 SPECIMENS) | |||
TABLE 5.1 - | |||
PdLLEO TURE DATA BURST PRESSURE Robbin cett E!AD1 ._ | |||
_ DestructVa fram | |||
.Y.2!3 04 21 eta &R Mar D*eth _ Burnt preneure fen 1} | |||
LJLEQibO ) | |||
No Laak ggg! | |||
A2 9 > | |||
B1 O.2 f | |||
W 1. | |||
Crack networ shows many,k lengths with through wall crack lengths in parenthes small axialcracks | |||
: 2. . exam N.M. . NotMeasured | |||
: 3. , | |||
Values in parentheses are estimated tube burst pressures b obtained from destructive examination . | |||
metallography ased upon crack morphology This pres P obtain a large leak at SLB conditions concitions, forbe these sure would required to -tubes with no leak normaloperating 4 | |||
Thin, peripheralligament remaining teads to an affective th rough walllength of 0.1',- | |||
33 t | |||
J | |||
TABLE 5.31 FIELD EXPERIENCE SUSPECTED TUBE LEAKAGE FOR ODSCC AT TSPs Bobbr1 Col PJaat inweibn Maha Qtab comments B1 Outage before - | |||
3 suspected leak Outage following suspected leak E | |||
Outage following suspected leakage Outage folkwing , | |||
* EC cahbration data needed to confirm voRage level, Notes: | |||
: 1. Reported voRages were adjusted to normanzatbn in this report of t | |||
l:l!lill 3 | |||
U 2-a t | |||
D a X D | |||
n i | |||
o t | |||
c e 2-p C s | |||
i n x X | |||
l e | |||
l a l n a a C h t | |||
p i | |||
n D e 2-b e B 1 b g 0 o a r | |||
5- B e v | |||
e A r d l | |||
u e M o | |||
g i C i | |||
F F n 1 | |||
d B n M t | |||
a o S - | |||
e b | |||
u T | |||
2-de A l | |||
l O - | |||
u P ) | |||
k a | |||
t e | |||
( | |||
s 1 k | |||
- o A n B a i-t s | |||
l o | |||
V | |||
: [ll1ll, 1 l | |||
' i | |||
..--si.--i...----;-ii = ' - ' - | |||
* l 8 l \ | |||
C 5 | |||
3 i ~l E h $ | |||
X | |||
' N w= - x h4 | |||
* u | |||
$. ~ . . | |||
E 7 2 ? | |||
a I e | |||
~ | |||
, 4 4 | |||
E j o 1 | |||
I w 1 2 | |||
3 | |||
_ Normel Operating AP Leek Rate Dets Base 3 | |||
i 8 MB-SmaN Leak l | |||
Volte 'E MB-Large Leak t U MS-No Leak a Fleid-Leakage' t | |||
Bottin Coil Average Depth index _ | |||
9 | |||
F SIGNAL PARAMEIERS FOR CRACKING | |||
-9 | |||
^ | |||
CO b | |||
O D | |||
P a | |||
O_ | |||
Z ; | |||
u) | |||
~ | |||
THROUGH-WALL PENETRATION (PERCENT) | |||
i 3 "1 1 I f-"1 11 3i iie;$lli; a i | |||
, . .a .x < | |||
i | |||
.. I 2 | |||
4 a -I" d | |||
i w | |||
I 4 | |||
I 3 1 I ia S | |||
.. j i | |||
- TABLE 11,2 ! | |||
LEAK RATE TEST DATA FOR DENTED TUBE / TSP INTERSECTIONS Dort Dort Thru Wal Samnia i D. Open Crev6ce Jgg g Crae* fin ) L ask R ate IIM 6 Measured Leak Rate Ght) | |||
Normal Onar_M Fatigue Specimens FAT 1 - S FAT 2 FAT 3 FAT 4 FAT 5 FAT 6 FAT 7 FAT 8 FAT 9 FAT 10 FAT 11 FAT 12 00 SCC Specimens 7 | |||
~ | |||
BW1 BW3(3) mi , | |||
BW9 BW14 e | |||
Notes: | |||
: 1. Fatigue specimen leak rates are calculated leak ratee(: | |||
: 2. Crack network length (includes ligaments) | |||
P | |||
: 3. Through wal crack length extended approx,14' otusade TSP. | |||
l 1 | |||
EZPWSCC IN ROLL TRANSITIONS FARLEY 2 SPECIFIC PLUGGING CRITERIA Tune RUPTURE CONSIDERATIONS ALLOWABLE AXIAL CRACK LENGTH COMsINED ACCIDENT EVALUATION LEAKAGE RATE CALCULATION OPERATING LEAKAGE RATE LIMIT t | |||
EZPWSCC IN~ ROLL TRANSITIONS ALLOWABLE AXIAL CRACK LENGTH EPRI NP-6864-L BASIS CRITICAL CRACK LENGTHS BURST CRITICAL CRACK LENGTH PRESSURE N0 TSC* WITH TSC* | |||
(PSI) (INCH) (INCH) 1457 0.99 0.99 2650 0.64 0.72 4371 0i35 0.52 TSC IS TUBE SHEET CONSTRAINT. | |||
i | |||
l EZPWSCC-IN ROLL TRANSITIONS ALLOWABLE AXIAL CRACK LENGTH EPRI NP-6864-l BASIS NORMAL OPERATION PRESSURE DIFFERENTIAL e | |||
LIMITING CASE WITN FACTOR OF 3 3 ts F = 3 (2250-793) | |||
, = 3 (1457) | |||
= 4371 PSI REFERENCE CRACK LENGTH = 0.35 INCH | |||
\ | |||
i ALLOWABLE AXIAL CRACK LENGTH, A e | |||
ACCOUNTS FOR GROWTH,-EC UNCERTAINTY.AND SYSTEMATIC EHR0R, AND TURESHEET (TS) | |||
CONSTRAINT WHERE APPLICABLE A = 0.37 INCH WITH TS ,COMsutAINT A = 0.20 INCH WITHOUT TS CONSTRAINT i | |||
a h | |||
4 1 | |||
EZPWSCC IN ROLL TRANSITIONS ALLOWABLE AXIAL CRACK LENGTN COMBINEo ACCIDENT EVALUATION O SSE PLUS LOCA On SLB/FLB PRIMARY STRESS AT TOP OF TUBESNEET i l | |||
0 PRESSURE DIFFERENTIAL NORMAL OPERATION (1457 PSI) | |||
SLB/FLB (2650 PSI AFTER BLOWDOWN) l LOCA (-793 PSI AFTER BLOWDOWN) | |||
O CROSS-SECTION BENDING STRESS-q 4 4e CROSS-SECTION BENDING STRESS IS WELL BELOW THE MAGNITUDI REQUIRED TO NAVE AN EFFECT ON BURST PRESSilar, (WCAP 7832-A) | |||
_osc 0 | |||
ALLOWABLE AXIAL CRACK LENGTH DETERMINED ON THE BASIS OF INTERNAL PRESSURE ONLY IS JUSTIFIED i | |||
) | |||
COM81NED BENDING AND INTERNAL PRESSURE B i | |||
r ON TUBER WITH THROUGH WALL SLOTS | |||
,, g, /, c, i | |||
4 i | |||
P /2 P/2 2"- r = 3 '- 1 2 -2% | |||
U I f | |||
( 3 0 | |||
0 | |||
/ \ ) | |||
d h | |||
P/2 3 1 2 P/2 Externally Applied Sanding Loed and Locatiors of Through Wall Penetrations | |||
i | |||
; I EZPWSCC IN ROLL TRANSITIONS l | |||
I LEAKAGE RATE ** ..,U LATION | |||
! 0VERVIEW I | |||
PROBABILISTIC TECHNIQUES ARE COMBINED WITH A DETERMINIETIC MODEL FOR LEAKAGE FROM A SINGLE AXIAL CRACK TO DETERMINE THE LEAKAGE RATE FOR THE l | |||
DISTRIBUTION OF AXIAL CRACK LENGTHS. | |||
POTENTIAL LEAKAGE IS OBTAINED FOR ALL AXIAL CRACKS DETECTED BY RPC INSPECTION ABOVE THE F* DISTANCE WITH CRACK LENGTH LESS THAN ALLOWABLE. . | |||
l I | |||
a i | |||
,_ . . . _ . . , _ . . . ~ - - - . . , . . _ . . . _ _ . _ _ _ _ . . _ . . _ _ . . _ . . _ _ . . , _ _ . . . ~ . . . . . , , , . , _ _ , . . _ _ . . _ , _ _ _ . . . . , _ _ | |||
i EZPWSCC IN ROLL TRANSITIONS l.EAKAGE RATE CALCULATION AxrAL crack FLOW MODEL (CRAckrto) | |||
AssuMPTroNS | |||
- a, c t | |||
l 1 | |||
l l | |||
l W | |||
eld | |||
,----r < - - - , . , - ---,-,,----w-, r~ ,- | |||
l l | |||
EZPWSCC IN ROLL TRANSITIONS LEAKAGE RATE CALCULATION AXIAL CRACK Flow HoDEL (CRACKFLO) | |||
FLUID AND Patssunt DmoP CHARACTERISTICS | |||
.a, c 1 | |||
l l | |||
l | |||
, , - , - - - -,.,,,,,.n... - . , -,. , ---- . - - , - ,-r,. --r | |||
i EZPWSCC IN ROLL TRANSITIONS LEAKAGE RATE CALcutATION AxrAL CRACK FL0w Ho0EL (CRACKFLO) | |||
AXIAL CRACK OPENING AREA H0 DEL | |||
.. s,c I | |||
l | |||
, _ . , , . _ _ _ _ . - . . . . - - - . - - - - - - - - - - - - - - ~ ~ - ~ ~ ~ ' ~ ~ ~ ' ' " ~ ' ' ' '" | |||
EZPWSCC IN ROLL TRANSITIONS LEAKAGr RATE CALCULATION 1 | |||
AXIAL CRACK FL0w N0ert l (CRACKFLO) i SOLUTION PROCrouns | |||
_, d, c M | |||
, -- - - , - - - , , - -. . , , ,, - ~m,,,,w ,,-,-r---e----r-- | |||
t I | |||
i EZPWSCC IN ROLL TRANSITIONS LEAKAGE RATE CALCULATION t COMPARISON WITH EXPERIMENTAL RESULTS | |||
' NORMAL PLANT OPERATION i | |||
8 IN GENERAL, MODEL YIELDS A GOOD PREDICTION FOR THE TREND OF LEAK-RATE WITH CRACK LENGTH. | |||
o | |||
! EXCELLENT AGREEMENT BETWEEN PREDICT MEASURED LEAK RATES IS SHOWN FOR FATIGUE CRACKS. | |||
l e | |||
FOR stress CORROSION CRACKh GREATER SCATTER IS SHOWN. | |||
SCC CRACKS ARE CHARACTIRISTICALLY SMALL ~ 0.1" LONG DIFFICULT TO DEFINE GEONETRICALLY SUSCEPTIBLE TO PLUGGING | |||
sum um_.ww_- -y-m_----- , _ ,_- - ,-- , .- | |||
ww. mwme., 4 *eastedJ_.w hw 4_ Me.- $ e S- h 44.2e -4d4A4h,4# 4A-e edk eb .,-4, - | |||
_. 4%-- _ ,.he,ps ,a e a ,wr.%,m m ee4..we.a.i i+es%_wa .4m,a,w-q u Cn t Wi | |||
& I C I M | |||
L.LJ J | |||
Q W | |||
C b | |||
L1J J | |||
Z 1 | |||
a W | |||
F-- | |||
u Lu H | |||
a W $ | |||
C ' | |||
Lt Z | |||
' W W | |||
'E | |||
! H i | |||
W (D | |||
! Z , | |||
O tn H | |||
T CL Z | |||
O U. | |||
1 (Nd9) 31YW >lV310313IO38d l | |||
l l | |||
EZPWSCC IN ROLL TRANSITIONS 1 | |||
LEAKAGE RATE CALCULATION l | |||
l COMPARISON WITH EXPERIMENTAL RESULTS STEAM-LINE BREAK CONDITIONS | |||
# IN GENERAL, THE MODEL OVER PREDICTS LEAK RATES FOR SLB. | |||
8 IN ORDER TO IMPROVE PREDICTION CAPARILITY, l | |||
EMPIRICALLY BASED ADJUSTMENTS ARE MADE TO THE MODEL. | |||
e,c nies t | |||
s.Ny .-3-w,. 2-- we y e-+--% ,,-^-- ww-vy . -- - - gw-- w ' , | |||
--+--7 + - - - -* g | |||
a-- ,.-,n_m.---__+-mA,JA,-S -----J~ m s---,,wm.- 14A.-- - Ja - a a -- 4 au .1 4 .4 a.. B >A .ma. _ _ _ r aA., | |||
1 tJ l T ! | |||
Cn t Wi F- 1 t | |||
4 C | |||
M i LL) | |||
J Q | |||
W k | |||
05 LLJ Z | |||
Ca Q | |||
LU H F-a 3 H . - | |||
Q W W i cc N Q. cc W | |||
z :w: | |||
d W a X | |||
& c3 LLJ CD Z | |||
O Cn H | |||
T Q. | |||
E' oi al (HdS) 31YW >lV31031DIO38d i | |||
~ ~ -. m. -+- , e r.gg,. 7,-w-i- e .i.---w | |||
% -w,--m5-. | |||
I t | |||
EZPWSCC IN ROLL TRANSITIONS 1 | |||
l LEAKAGE RATE CALCULATION PROBABILISTIC METHODOLOGY l | |||
a MONTE CARLO TYPE EVALUATION IS PERF0P)tED BY SAMPLING CRACK LENGTH FROM A GIVEN POPULATION TOGETHER WITH EACH OF THE FOLLOWING NORMALLY DISTRIBUTED STATISTICAL PARAMETERE: | |||
~ | |||
eC r | |||
l W | |||
W | |||
-- --, ,,--,--.--e.v.., --. | |||
---..,,,.,,w,, - ~ _ -. . . , , - - ,-m. . . - , - - - - -., ..m.,-~,- -. , + - - - + . - - | |||
EZPWSCC IN ROLL TRANSITIONS t | |||
LEAKAGE RATS CALCULATION i | |||
UNCERTAINTY ANALYSIS i | |||
HEASURED VERSUS PREDICTED VALUES (M vs. P) ARE FIT | |||
~ | |||
BY | |||
~ l | |||
, - 4,C y _ | |||
- A,0 NORMAL OPERATION l | |||
g,c M | |||
SLB C0NDITION _ | |||
a.c W | |||
FACTORS 1 SIGMA 2 SIGMA A, C N.O. ' | |||
SLB . | |||
r MEASURED VS PREDICTED LERK RATES - si 4 c, | |||
\ | |||
e E | |||
4 8 | |||
5 x | |||
l l | |||
l bEDICTEDLEAKRATE(GPM) - | |||
VERSURE] VS 3REJ"C EJ _ER< RA~~ES a,c r , | |||
k a | |||
W H | |||
C CE M | |||
C W | |||
J Q | |||
W U1 C 1 W | |||
E l | |||
l PREDICTED LERK RATES, GPM - | |||
l l | |||
l | |||
EZPWSCC IN ROLL TRANSITIONS | |||
\ | |||
1 LEAKAGE RATE CALCULATION l | |||
SLB LEAKAGE RATE CoMPARI5oN l | |||
Fon EPRI DIsTRIsuTIONS l | |||
1000 CRACKS FRoM 0 To 0.394 INCN (10 MM) IN LENGTN 4 CALCULATION LEAK RATE MODEL J DM) | |||
A B EPRI/LAsonELuc _ | |||
-. 9 K CunvE 1 | |||
! K CunvE 2 CRACKFLO . _.e,4,c NOMINAL NOMINAL | |||
+ 2 SIsMA NOMINAL | |||
~ | |||
+ N SIeMA ~ | |||
1 | |||
i i l | |||
i EZPWSCC IN ROLL TRANSITIONS 1 OPERATING LEAKAGE RATE LIMIT j I | |||
l EPRI NP-6864-L BASIS REASONABLE ASSURANCE | |||
- -9 OF LEAK BEFORE BREAK IS | |||
! ACHIEVED WITH A I GPM LEAKAGE RATE LIMIT. | |||
HILn'7RICALLY, AXIAL CRACKS IN ROLL TRANSITIONS HAVE EXHIBITED LOW LEAKAGE, EVEN NO LEAKACE IN SOME CASES. | |||
ACCORDINGLY 100% EC INSPECTION IS PERFORMED WITH MRPC PROBES TO COMPLETELY CHARACTERIZE THE CONDITION OF THE BUNDLE IN AFFECVED REGIONS. | |||
- , 9 THE COMBINATION OF 100% MRPC INSPECTION AND THE - - | |||
GPM LEAKAGE RATE LIMIT CONSTITUTE A DEFENSE IN DEPTH AND ASSURE' CONTROL 0F TURE BUNDLE STRENGTH AND LEAKAGE INTEGRITY. | |||
i l | |||
l J | |||
.,,-.,,.w, -.r,,,---- -w-. , , - , - , . ,< . ~ -.,,,n,.,.i.-.- , . - ~v= | |||
EZPWSCC IN ROLL TRANSITIONS OPERATING LEAKAGE RATE LIMIT f | |||
1 - | |||
) LEAK BEFORE BREAK I | |||
. 9 , | |||
l ASSUMING I | |||
CAPABILITY | |||
' GPM LEAK RATE LIMIT AND MINIMUM BURST I | |||
i NOMINAL RT LEAKAGE VS CRACK LENGTH 0 WITH TS CONSTRAINT, 3 P BURST CAPABILITY IS ASSURED; 0.52 INCH v5 0.40 INCH, BURST VS LEAK. | |||
-2 SIGMA RT LEAKAGE VS CRACK LENGTH I O | |||
WITH TS CONSTRAINT, SLB BURST CAPABILITY | |||
' IS ASSURED; 0.72 INCH vS 0.60 INCH, BURST VS LEAK. | |||
WITHOUT TS CONSTRAINT i | |||
O SLB BURST CAPABILITY IS ASSURED FOR -2 SIGMA RT LEAKAGE VS CRACK LENGTH; 0.64 INCH vs 0.60 INCH, BURST VS LEAK. | |||
O GROWTH AND UNCERTAINTY ALLOWANCES LIMIT THIS CONDITION TO AN E0C LENGTH OF 0.35 a | |||
_..4 -~.. , ,- . . . . . . , . . _ . . . - - .___. .,- - . . . - . . . _ . . _ _ _ . . ._._---_..._......,.-..s. . . . , . _ . . - . . . - . | |||
l 2 | |||
_. E < 92 E VS 2X:: 2 _ C R 2 C < _. E.NG ~~ - | |||
EXPANSION ZONE ROLL TRANSITION 7/8" TUBING RT 600F AND 1457 PSI ,,, j,, e x | |||
b uf E | |||
e b | |||
"i i | |||
[ | |||
em b RXIAL CRRCK LENGTH, INCH | |||
l l | |||
FARLEY UNIT 2 ! | |||
SALIENT ASSUMPTIONS USED TO DETERMINE ALLOWABLE PRIMARY-TO-SECONDARY LEAK RATE FOLLOWING A STEAMLINE RUPTURE o | |||
PRIMARY COOLANT INITIAL IODINE ACTIVITY: | |||
i 1% DEFECTS o | |||
SECONDARY COOLANT INITIAL ACTIVITY: | |||
0.1 MICR0 Cz/oM D.E. I-131 | |||
; o | |||
' LOCATION OF POTENTIAL TUBE LEAKS: | |||
TUBE SHEET o | |||
PARTITION COEFFICIENTS: | |||
SG IN RUPTURED LOOP - 1.0 SG's IN INTACT LOOPS - 0.1 o | |||
STEAM RELEASE FROM INTACT LOOPS (0-2 HRS.) | |||
479,000 LBM o SITE BOUNDARY x/o : 7.6 E-4 SEC/M3 C1:16 | |||
FARLEY UNIT 2 RESULTS OF ALLOWABLE LEAK RATE EVALUATION DOSE ACCEPTANCE CRITERIA: | |||
2 HOUR SITE BOUNDARY THYROID i | |||
DOSE LESS THAN 30 REM ALLOWABLE LEAK RATE: | |||
40 GPM PER GENERATOR 1 | |||
\ | |||
\ | |||
l Cl:16 | |||
l | |||
) | |||
c FARLEY UNIT 2 STEAM GENERATOR OPERATINs HISTORY PRESENTED BY D. D. MALINOWSKI MANAGER, STEAM GENERATOR DIAGNOSTICS NUCLEAR SERVICE DIVISION WESTINGHOUSE ELECTRIC CORPORATION ALABAMA POWER COMPANY /U.S.N.R.C./ | |||
WESTINGHOUSE ELECTRIC CORPORATION MEETING i R0cKvILLE, M) | |||
NOVEMBER 5, 1990 | |||
1 1 | |||
) | |||
l FARLEY UNIT 2 PRron S/G OPERATING HISTORY 4 | |||
r a | |||
J. M. FAnttY UNIT 2 Tust PLucerHe CHn0N0 LOGY BY CAust Daig Cnig 5/G A $/G B Slft_C Inis, PRastavzca 3 1 - | |||
6/81 4 VtsuAt LEAxt 1 0 0 1 10/82 R0w 1 (Paav.) 92 94 94 280 T TAL 9/84 LEAx (HL) | |||
BELow TSP 7 1 0 0 1 | |||
'T TAL 1/85 AV8-WaAn 8 0 Tust 1 | |||
'O 8 Paav. PULL 0 0 1 3 0 TustsMatt PW5CC 0 3 1 0 0 1 50AL 4/86 1I AV8-WEAR 1 1 0 TusesHear PWSCC 8 5 2 | |||
0 D. TSP SCC. 27 40 J J 11* 2A total 11 | |||
*(2 puttso) 15 44 11/87 70 Tustsweat PWSCC 4 9 0.0. TSP $CC 16 29 6 14 Fest-$ PAN 44 74 AV8-WEAa 0 0 3 2 0 2 ko!A 4/89 hl TustsHeat PWSCC 1 3 0.0. T1P SCC 2 16 AVB-WEAR 8 2* 10 total 3 0 ' | |||
II 7 T/ | |||
*(2 puttso) . | |||
J. H. FARLEY UNIT 2 | |||
$ TEAM GENERATOR Tust PLuco No | |||
==SUMMARY== | |||
PLucotNo Tusts PLUGGED TOTALS | |||
__--DATE $[QJ (($_) iL6_C INCREMENTAL CUMULATIV[ | |||
PRt-SERvrct 1 1 0 2 2 8/80 2 0 0 2 4 6/81 1 0 0 1 5 10/82 95 94 94 283 288 9/84 1 2 0 3 291 1/85 13 1 0 14 305 4/86 11 15 44 70 375 11/87 13 35 61 109 484 4/89 J1 _12 4 _22 ill TOTALS 146 160 203 511 (4.4%) (4.7%) (6.0%) (5.0%) | |||
l FARLEY UNIT 2 CURRENT INSPECTION RESULTS | |||
FARLEY UNIT 2 S/G EDDY CURRENT INSPECTION PROGRAM OcTosER 1990 OUTAGE prose Tusts INSPECTED AND S/G A_ S/G B_ S/G C_ | |||
EXTENT dl d E .E dl 6 BonBIN FULL LENGTH 3240 274 3228 276 3185 279 RPC TusESHEET 3240 - | |||
3228 - | |||
3185 - | |||
RPC AT TSPs 82 - | |||
81 2 195 - | |||
RPC U-BEND 92 - | |||
92 - | |||
94 - | |||
BOBBIN U-BEND 92 - | |||
92 - | |||
94 - | |||
(Post HEAT TREAT) l | |||
~ | |||
L. | |||
FARLEY UNIT 2 BOBBIN INDICATION CALLS l ALLSTEAM GENERATORS | |||
@ 350 O | |||
F 300 -- ---- - - - -- ----- - - ----- | |||
$ DATA AS OF11/4 | |||
_z 2 s 0 O | |||
200- -- --- | |||
=- - | |||
x - | |||
0 150-w O | |||
+ 100--- - - - - - - - - --- | |||
5 ( | |||
yw -- | |||
E o_ 0 i EE._ i J, - | |||
TE F* TSH TSP LOCATION 1989 E 1990 . | |||
4 FARL FY UNIT 2 RPC INDICATION CALLS ALL STEAM GENERATORS 300 2% -- -- -- | |||
=------------ - - - - | |||
O DATA AS OF 11/4 ' | |||
y 200- - - - - - - -- - - - - - - - - - | |||
k o 3g -_ -. . _ _ .m. _ . _ _ _ .. | |||
O reseee *e .eeseeeeeeee.eeemme. eeeeee. | |||
O i i i TE F* TSH TSP | |||
A .4 _e1 - | |||
ee~ | |||
O Ch o mI | |||
*"4 ; | |||
d y I | |||
? | |||
I | |||
**- W gg .- 0 M %V ..*. .e i i a | |||
N st C C@v y w i | |||
m N 1 *i t i_ . | |||
p q n . | |||
i , | |||
o . | |||
u 4 ... - | |||
[g [ | |||
j | |||
<( I f I I | |||
r Jn . | |||
E! ! . | |||
,l i .' .4 Ewi5 M | |||
. . . . . i j! ! ~I i ; ! | |||
! r . | |||
I i w!;. | |||
EI 7' | |||
*Af o' | |||
0 ; | |||
!!. . . .. ;.i : -r - | |||
^ | |||
v6 I - . , . ,,i; '*k: D c ,J:ic";'.lJ.7-i | |||
: :i : . | |||
..i N 1, ... ,i. , - ,-1 ,1 E Q . . | |||
,a | |||
* i an. i :-" | |||
. . . i. 1 ,2 i .m ,r =,. | |||
- :..a Ja E ! ! | |||
l wm | |||
* y 7' i ii | |||
. . 1 i*2 1 | |||
. .=* .1* | |||
= -- -> - , ! . | |||
, 1 ! ! i+ . | |||
I i i .- .2 i ; ! .. ! !=1 uma 1 . ! ' i. 1 | |||
' g[ | |||
r i ; si; 4 | |||
's. 6 ! >3 -n 2t . i i v r | |||
. ~ 'm1*N a D . | |||
R | |||
. . . 3 mirei - 2; m. | |||
i | |||
' = . wwi N | |||
a w3ii- a m,i.., , : | |||
>=4 ,2-22 .' | |||
h i | |||
; i l' I t= ; i N 'e ? ! E | |||
*I I iia 1 ;, | |||
, ,e ' ,A .' ;,. i Mk:* =c i | |||
1 | |||
* ! i Ni N | |||
', ,, . i . | |||
w . | |||
a ijwa . . | |||
12 < N . | |||
,I, summe . | |||
.J . | |||
A ; , | |||
J J h | |||
. .m.m m | |||
:- v; w. ; y < p==w.. - y .. | |||
>==8 i . . | |||
i . i [ , . | |||
r i h ! A T "'. %: | |||
- i . i ' ' I f"E | |||
-21 ! a VFi i e i' r ' - | |||
i !.;* "* | |||
* l | |||
" 1 ' ' M' | |||
! 4 j ! . i i m: 2 : | |||
l | |||
!.i . hI ' | |||
l . . . . | |||
..--2 ,m i | |||
' I d asa 2 ! | |||
p g A _ .' W sam I~ | |||
J I an 4 | |||
[*[2 r' mEm 1 , | |||
W ' | |||
* man | |||
* i N ' " ' ' | |||
V M . " | |||
e e )r I W I a' ;e. 1 une ! | |||
w: >w. | |||
\ @ . . | |||
=i 4 | |||
i | |||
;,2! | |||
2=ri. | |||
..i , | |||
= | |||
. y d) 0-O! | |||
r[- P.9 f_ | |||
it | |||
=g .:.. it 4 < | |||
e:.-. | |||
4 | |||
*.=. c-i- - . i ' .=s= = . . | |||
emmes , , ... i, _ | |||
x( _ | |||
- m 2: , . | |||
s u. . | |||
X _ | |||
x '. i ! . . , . . | |||
y f | |||
,, j i . .w'. - | |||
.AJ . " | |||
_ x. . A . | |||
n | |||
__m.. .: ., , , . | |||
x =_.. ,, ,4 1I | |||
[g | |||
.i ;. | |||
i | |||
;**l 2, | |||
* I i E | |||
1 , .- mi , , , 2: . | |||
i , | |||
* i ' | |||
me * | |||
~_ | |||
f e. | |||
4 , ..i | |||
' = ; | |||
i 6 | |||
* , ! ww. i; i- | |||
*!=', | |||
: m! _ i J' | |||
.y. | |||
r g g; | |||
[ p e-. - | |||
i | |||
! l t | |||
i i I I 2 | |||
? | |||
. = | |||
. .=+ . | |||
.! i I | |||
o g * | |||
/. | |||
D i! . ' i ' ' + ,, , | |||
... . wI i ,,,1 } i i uur ' | |||
1 | |||
. . ,i | |||
! ' . i - | |||
N 7 | |||
A' i . . | |||
i i , , | |||
I ! :-24 5 6 | |||
'.; , i *- . | |||
I ! #1wa | |||
! . 4 i; b [ | |||
! ;31 , . . m '4 ; | |||
r . i N | |||
( | |||
i e | |||
1 I I i 6 i . .M | |||
.i , | |||
i ( | |||
2 g | |||
i , , , . . !'' 1 M . . . , , , , | |||
t 4 | |||
. . . . .Q. . Q m | |||
a.y' _ A . | |||
. . .. . 4 .... , | |||
m-i . I kek ! I 3 i 1 . + '. ' | |||
i | |||
* I ** | |||
. t & . . | |||
4 t p: | |||
i , | |||
s i | |||
r ,, | |||
== | |||
t q w 2 | |||
( e | |||
, 1 | |||
! 2 ,! ,ii g 4 i i . | |||
i 6 ww . . a < | |||
i | |||
- i . e i | |||
, . J g | |||
8 8 1 1 , e u | |||
gf 2 U i i i i | |||
, i i o w | |||
> V O v | |||
, 4, om s | |||
O i i ! ! # I | |||
[~ | |||
Z A | |||
a e 1 | |||
. g s 3 OL e O | |||
I | |||
* i | |||
l FMLEY UNIT 2 DETERMINArlON OF AXIAL CRACK LENGTHS SOURCE OF RPC RESULTS DATA: | |||
APPLICATION: TUBE /TUBESHEET ROLL TRANSITION METHOD: | |||
1 ESTABLISH ROTATIONAL PITCH - USE MACH /NED NOTCHES ON CALIBRATION STANDARD 2 | |||
DRTERMINE NUMBER OF 'HlTS' (VERTICAL DEPARTURE r.3OM NULt. EXHIBITING FLA W LIKE FEA TURES. USE MOST ACCURATE OF PSEUDO ISOMETRIC RPC PLOT, EXPANDED STRIP CHARTS OR LIS-SAJOUS FIGURES) 3 Q.ALQLA.Tg AXlAL LEL2T.kl- MULTIPLYrOTATIG,:At. PITCH BY NUMBER OF " HITS". IMPLICITLY ADDS V2 PITCH TO BE9 INNING AND END OF EACHINDICATION ADDITICa .L CONSIDERATIO'N: | |||
CORRECTION FOR ELECTROMAGNETIC FIELD SPREAD OF COIL IS NOT APPLIED AT PRESENT S!NCE MORPHOLOGIES OF INDICA-TIONS ARE NOT KNOWN ACCURATELY. | |||
l | |||
I FARLEY 2 CRACKIRNGTH STATISTICS DATA AS OF 11/5 (1500) l 70 | |||
/ 100 | |||
. . . _ . | |||
* O | |||
, a o / | |||
* m so =- - AVG = 0.34 __ _1 | |||
_,, j p% STD = 0.11 ' 8 2 | |||
b | |||
% 50 Nx O y .__ | |||
A st: | |||
4 ra | |||
* m A > | |||
; y 20- - | |||
, C S | |||
* Ilb - | |||
-- g | |||
! -10 D | |||
! O 0-' - | |||
O - | |||
0 l | |||
O.05 0.1 0.15 O_2 0.25 03 035 OA OAS 0.5 0.55 0.6 0.65 0.7 0.75 0.8 i | |||
: CRACK LENGTH (IN) i 1 NUMBER OFINSTANCES CUM. DIST. FUNCTION i | |||
CRACK LENGTH MEASUREMENT UNCERTAINTY ayoy (EPRI Report NP-6864-L Draft) | |||
E39 crack engt1 measurement is t1e sum of the systematic error anc the rancom error. | |||
Systematic Error = True crac< cize - N JE crack size (True crack size mea-l sured by metallography or other acceptable method.) | |||
Rancom Error = Exaected NDE crac< | |||
size - lower bound N JE crac < size ayor = 0.12" (3.04 mm) for 7/8" tubing | |||
t AVERAGE CRACK GROWTH RATES BASED ON KISS-ROLL DATA 3 | |||
S: | |||
9-EPR-NP-6864L 3@ 2.5- - - - - - - - | |||
Dr8R R8 Pat - - ~ ~ -- - | |||
~ - - - -- ConsectAlve measureinerts of anck lengths E huy em h elapswbeween v | |||
d | |||
""*"*'*'''v'''**"***""''""" i t | |||
rateof ancklonglhgrowth g_ ._ _ __.... .... ...... - | |||
Farley2resoas from RPCdatain 1990 cannat be compared to prior resells since tubeswith N ascksin the eroa of interest were pluggedin prior outages. | |||
O4g8.v . | |||
EPRI study prowdes an esemass of swrage | |||
[ --------- | |||
crack croath ra'** 8or various abaaaad O lengthsin 8m baseinspechon. | |||
g g Growth rateisobsenedto huwe en inverse reiwilonship to anck length. | |||
j _. ... ..- .. .- . _.... -- - - | |||
= :: | |||
0.5 . > > > > | |||
1 0 2 4 6 8 10 12 e | |||
INITIAL CRACK LENGTH (mir.) ' | |||
? | |||
' _ _ _ __ W O i v==4 0 | |||
g W 0 I | |||
[ | |||
! . i T w e k ( ( S-C O 4 ** ** 1 i k i i i' i N b | |||
< 'o o v o g. | |||
e C - | |||
: i. , | |||
j .j f , | |||
i , 1 | |||
, t i i g , | |||
e r , T i . | |||
s i i . . ! e s. | |||
sw ; - , , , | |||
;, n' | |||
., i o i i . i | |||
* 9a=4 4 g4gg | |||
* T - | |||
! i ' i _! I i | |||
, $ O,, | |||
, , i | |||
. i . . | |||
. 1 i I a + h 1 I i i | |||
~ "" | |||
I I | |||
^ | |||
Z v ' | |||
N | |||
-) | |||
i i . . > | |||
! j F C | |||
h as, i | |||
! i v. | |||
, . i i 3 | |||
. , i i ,i | |||
. i . i ei 1 | |||
n=== . i v , | |||
i i i i i!= . . Q P | |||
3 , , | |||
i , v gpeng , | |||
~ w | |||
, s i T i C ( 1 i | |||
U | |||
' C y | |||
. CQ ? | |||
O g , ,, - i i : e W k Y '8 i f i. i v | |||
e,/ A | |||
, ! E A . | |||
i i e i XY' - | |||
v | |||
_=- ' | |||
1 iv ! | |||
g( " | |||
p _- | |||
w | |||
;v | |||
. i i | |||
! . i ! T | |||
> ,i _i . , o a,. , | |||
* 1 i r i i I .Ti... i i . . . O "- | |||
;-r i C | |||
i i r " ' | |||
E | |||
.."! ', W 1 | |||
i | |||
.m.,,, .- 0 . . . -. ? i- j - m. , , | |||
* O h | |||
=; == i . ;-i i ! , . . i 2 | |||
s 6 i ! , . . . r g _ | |||
I ._ ' . | |||
, , 6 . i ! ! . . j . ! =i i i i O b* | |||
y -- | |||
ii i - ma i xA g - | |||
i | |||
-- i . | |||
i ! | |||
. 4_ i | |||
**i r , | |||
i i i | |||
1 . 1 3 J r:.,. | |||
1( ., . . , , . | |||
i | |||
= | |||
c | |||
. ., , , , . , , , , , ,i e ' | |||
, . . i-; | |||
! .E ! t . | |||
r ! | |||
F _ . | |||
v 6 -i . 1! | |||
. . . i 1 t + * | |||
' i i O | |||
I . | |||
I i . | |||
'i i i ii 4 . . | |||
> i . | |||
+ | |||
. 4 . i , | |||
! l , | |||
" O | |||
, i i ! !T . . 3 . 3 C gemas4 X_ i i | |||
{ } i i e i | |||
,,, f e i | |||
, i . . . | |||
i ! . . i i , | |||
, r - ! . I C g e | |||
.X mm i | |||
..Ti asm t Y | |||
i | |||
. . i t r | |||
i i | |||
C b, 3 imi . : _ ** | |||
C 5% ;= i '' . t i - | |||
P .' 1l 63 i ,m- | |||
, . i ! . . . 3 c O P | |||
h 1. . 'e I* | |||
1 i ! i1 . ! , . i - i n - - | |||
! . . 1 | |||
* I i . * ! ! i | |||
.A" i=* ! ! i! . t i i T ! * . | |||
l } i g } | |||
,, ,9,,,,, T' i= * | |||
! 1 - | |||
'5 i m. t . - | |||
! 1 + . ! I*i i 3 w. | |||
Q | |||
! ! .n. i | |||
[ | |||
. 1 | |||
. i ! | |||
'' i! 1 I 4 * ' | |||
I i ! i H C V' ' | |||
ai . i i i A i . . I r . . O 4 > | |||
1 , | |||
* - i ! . | |||
. ~ | |||
i ! | |||
.,i, i . . , , | |||
. i ' , , , . i | |||
. .i , , | |||
v . .- C o. | |||
A M - i - i i i i | |||
! in ' | |||
i 1 . ! . | |||
. i , . | |||
! i i e ' . | |||
< e, A! ., w i . [uki ! i ii3 i A | |||
[ | |||
i ' { s i T | |||
! . i C' i h - i . I I A e i i i iZi i ' | |||
i 1t 4f : | |||
, i - | |||
2l | |||
[ ! | |||
. . 6 si l | |||
T i i ci n._e s | |||
= | |||
i . ,, | |||
6 Ii | |||
..T' p e Ol | |||
-i 21 a | |||
% i !- I i t 1 | |||
i s"" | |||
i C "I | |||
! .he 3 | |||
~ * | |||
! ! f~ A. | |||
i. | |||
I* | |||
* o e i ! .a me. I ann Q | |||
>= | |||
% i i | |||
1 ,I I '' E A | |||
.O 4 | |||
2 O | |||
- m | |||
) <1 : | |||
5 co | |||
< 'i . | |||
r . | |||
o, < R U | |||
: k. . .., n = 2. | |||
, o o w Qz <k | |||
+ | |||
C ! i ! ! n $l | |||
.i . . | |||
O! . | |||
N 3 O W ! | |||
, i | |||
- i | |||
FARLEY UNIT 2 S/G C 11/5 DATA ; | |||
= | |||
i i | |||
SUPPORT PLATE /AVB INDICATIONS MAP STATISTICS 4 | |||
gMMwn i -- | |||
r m, I l | |||
. .o | |||
" ^ | |||
gi. " | |||
i:::y . ; * | |||
: m .'. + | |||
40 4 , | |||
C ' | |||
= ;. | |||
40 io2 ! | |||
:5 :: 6 1! o, e :: | |||
..:t, uq. | |||
~['.. | |||
9T ..' &. - , ...._ -l | |||
_g_l is | |||
. r , , | |||
{, | |||
g a . | |||
u._. . | |||
30 c ' | |||
i_ : '. | |||
. .. 1;, | |||
U "_ | |||
F; . | |||
r 6; ; ; | |||
{ 1- ~ -4 | |||
-7 | |||
~_4 L-. .- ___. | |||
30 , | |||
8 | |||
. . ., ,l. _ _,1 | |||
.'. .s ~! | |||
l . - | |||
1 . ~2 , | |||
I . * | |||
* 4 | |||
. 4 , . - | |||
2 0- x. ; | |||
u , ,. 1 = ' | |||
~ . | |||
i C .: | |||
i | |||
~ | |||
20 | |||
,la.'z_nu t | |||
r r. | |||
3 | |||
; . i- .. | |||
m ! _ __ . | |||
.m ; :: ' | |||
4 -+ m, | |||
, .. i i | |||
l0 - | |||
e .. | |||
.+n | |||
^t n=. ... | |||
,10 4 | |||
.. n i | |||
. . ~ . . - | |||
i ,2 i f .. | |||
: i. . | |||
1 1 e i | |||
90 80 70 60 50 4-0 i | |||
j MANWAY 30 20 10 i l | |||
' NOZZLE 1 | |||
; O 20% ..A 20% to .39 % O 40% to 100% s 0 Dis t o r t e d In dic a tio n, | |||
~ | |||
E Support Plates E Antivibrolion 8 ors , | |||
- STFAM GENTRA TOR 'INFORMAlION SYSTfM (C) WT SifNCitOlsSE El f Cipto coop | |||
* n '- a - | |||
i ! | |||
3 | |||
^*"~_-~~~_-_____________.-____ | |||
t Table 114 Summary of Examination Results or Farley Unit 2 SG C Tube Removal 4th R | |||
' Field Tube / Location (Bobbin) Des'.ructive Examination Resulti , | |||
R31046 81% 00 surface intergranular axial crack. | |||
1st Sp 83% throughwall in one cross section and 100% in another, Some secondary more . | |||
shallow cracks on 00 periphery away from primary crack. | |||
i. | |||
i 0554H0/Oca/7:5 | |||
.l | |||
-l | |||
i e | |||
l e | |||
i 4 | |||
i | |||
} | |||
} | |||
J i , | |||
t.> t er .:. > 4 e t .: c>a+c. < - : y ei o n ca. u. | |||
. . , : 1 I | |||
l ! i C>p** - ! | |||
' i < | |||
F110 6;9 am 1 | |||
k' SMN 1? ! | |||
j j frCtaf!CM = 24' OC S , | |||
i f, < | |||
' ! l W " | |||
.A e-l I . | |||
-#[ Y- k , i I | |||
l l . f 1 < | |||
l ' | |||
s t s , | |||
.I . | |||
4De vCL.'1 1.' M , | |||
I . | |||
l' I-J F'.u. WT 4. 3 | |||
' j I l 2 RUtt.T!CH 23 l 9 5 1 x ECT*?l:N 76 i Iii l i | |||
* es m is , | |||
Porem >4 . | |||
i 1 | |||
1 . | |||
RPC Display for Tube R31C46 Steam Generator C | |||
l l | |||
4 | |||
.i s .%.Q~' G'.% g ti54 I y$y ':'' E.i * ?p!.lu%.r.%~. I.5'.)Dh 1- | |||
. D. E )3,*1t'.', ' :.*a &:.' ', - | |||
s | |||
- clC[7ws. | |||
:-e s.. ., | |||
8.:. | |||
b ,; :6 . . - .. | |||
- i n . . g, .. ; == .. , | |||
zl ~. | |||
: 3., 2o ., s s | |||
.y'3. ., | |||
. p:.:. i -. jsl. | |||
..::Jxp,M,6.Q.-f . | |||
. %,., c;:: . .,,. | |||
8t | |||
. . .y ..' s :. ,. | |||
a pW:..y s .,' | |||
sty. . 4.i .: r . 2 .: | |||
e . :.n:I b W ' it' 312i. IE a, v. <,<. | |||
%'M.,vs. | |||
J a.;!. | |||
d.} | |||
. 'y- ,.sM. .f : .. | |||
s .... F . M,4-, ,, . | |||
. :ajj! : | |||
.t., I a L $ 5i | |||
+. . . , | |||
.,,6 s | |||
sfp.. .)..y"''l6:cQ.DC | |||
~ . .v . | |||
a!T : - | |||
; .~..,e;- .::N.9 P.+. %. t. e,..~i.>., r-i,t.. ,. h , Is..:j:: 4; O' y: ,. .s n.- , .q ad s( ? . q. ,,. w. q. | |||
'o . .,?.y .y G'fM?C'''$,.b,B..?M.. | |||
.4Y.,, '.. .;% | |||
.t | |||
_5.'.'? | |||
::t .A " W ';M | |||
.,,........s G; ~. ..M; f.;f *'~~s. . | |||
:? g w e.e,. | |||
1 | |||
,g I, .: I3 l f | |||
C f | |||
* e g 3 e. | |||
= | |||
. =s; . - . | |||
. g- | |||
: v. $.8 l' *- .2 gl | |||
. : 5 | |||
.g 0 2 | |||
~ | |||
. I s 5 l | |||
, ! i.it! -:181 t ks* | |||
: e. tt(.f.sg}* : E 8!i g i I'e | |||
,,'t k st'E 4 gee 'tl.f.st _ | |||
ljg. | |||
1 3 8 t | |||
3.*i. I 8:1- - | |||
M i . 3 | |||
!! !! !!!bkN{N!'IM !b:*klI'?;''UN!ll iNkt! g{l 8 | |||
''* l l l IB . | |||
98 li | |||
.! i ,. | |||
.. il3n I, y , | |||
,. I i ., . , | |||
I E. I E. | |||
I[ | |||
og 5 e:t | |||
.g. | |||
l ps Es. | |||
-li ie ! .i F -i j!- | |||
,q, . | |||
L_ es== ay L- | |||
"'""'W | |||
. ,_.--- w a, - | |||
--, g ==== | |||
g v , g i j ! I l ! | |||
k I | |||
hl5 , - | |||
I | |||
! ha i , I si e l t , | |||
, , 1 i . . . | |||
wmans : | |||
i . i , i ,_ ai, i | |||
i i i e i ;s i | |||
8 | |||
;8l I I J' I , | |||
FARLEY UNIT 2 g SUPPORT PLATE VOLTAGE DISTRIBUTIONS y 100 - | |||
#= +====== | |||
F 90 ' | |||
O z 80 2 | |||
z 70 // . | |||
9 60 B | |||
m__ | |||
50 V | |||
% 40 - | |||
w 5 30 I~ | |||
$ 20 F / | |||
3 10 | |||
?- 0= - | |||
$ 0 0.5. 1 1.5 2 2.5 3 3.5 4 O | |||
SIGNAL AMPLITUDE (VOLTS) | |||
= ALL bAiA : | |||
CLEAR IND. ONLY l | |||
~ | |||
FARLEY UNIT 2 S/G A SUPPORT PLATE INDICATION GROWTH RATE (Vi 8 -' -- | |||
1 | |||
$ s- Growth between | |||
] 4/89 and 10/90 5-e AVG = .43 4-83 E | |||
f/ | |||
0 | |||
-1.4 | |||
. U. | |||
-1.2 -1.0 E. | |||
-0.8 -0.6 | |||
-0.4 | |||
-0.2 0.0 0.2 INDICATION GROWTH | |||
, $;!! ! j! i!iij!iii .! ; ' i.! | |||
E _ | |||
T n A | |||
L) e0 . | |||
e9/ - | |||
P% tw0 e1 0 | |||
- T( b d 3 | |||
. RE h t | |||
n a ' _ | |||
O AT w o9 P R r/8 G4 0HT 2 | |||
P UH ' | |||
W _ | |||
S I O _ | |||
0R _ | |||
. W 1 G | |||
A O. ' | |||
N - | |||
GR O I | |||
- /G S | |||
0T A | |||
C 2 N | |||
. I D | |||
TIO 0 | |||
N 1 | |||
- I T - | |||
I NA ' | |||
UC | |||
% 0 | |||
_ I 9 2 YD 0 | |||
- EN L = | |||
I G 0 R V A 3 _ | |||
A - . | |||
F T - - - | |||
8 7 6 5 4 3 2 0 fb2m$oCW2 [LOtay2aZ c< | |||
;' :! -! j 1 : ! :, | |||
l FARLEY UNIT 2 GROWTH RATES FOR TSP LEVEL ODSCC 0 3 E RA" \ G CYCLE ECl GROW" 3E9 OD 1985 ~ 986 4 22 % | |||
~ 986 ~ 987 5 7% | |||
, " 987 ~ 989 6 5% | |||
1989-1'd90 7 <1% | |||
l l | |||
l l | |||
l | |||
, ,) :j: ; 1!i ,' l\\\, ;!I llilI, iii l1 l G - | |||
C M7 S - | |||
D - | |||
O i | |||
~- -- | |||
~ - | |||
P | |||
~ | |||
2S . | |||
~ | |||
~ | |||
T | |||
-. ~ | |||
~ 6 E | |||
_ I | |||
. ~ | |||
I . ~ | |||
NR | |||
. ~ l | |||
~ | |||
C UO Y | |||
F C Y S i | |||
- L E | |||
E-i U | |||
L t RI - | |||
F _ | |||
- 5 AR A F | |||
H I . - i W .- - | |||
- O R 4 _ | |||
G 5 5 0 5 O | |||
2 1 1 _ | |||
Ae m0 _ | |||
a ' .i ' : '. - . ;: !i i;i!: ,i t | |||
FARLEY -2 1990 OUTAGE PROPOSED BASES FOR Tuas PLUGGING PWSCC AT ROLL TRANSITIONS t 0 LIMITED APPLICATION OF EPRI PROGRAM PLUGGING CRITERIA l - DEMONSTRATION TO DEVELOP OPERATING EXPERIENCE l | |||
WITH CRACK LENGTH BASED CRITERIA 0 PROPOSED DEMO OF EPRI #RITERIA | |||
- LEAVE IN SERVICE A LIMITED NUMBER OF TUBES THAT MEET EPRI CRITERIA 0 50 TURES WITH SINGLE AXIAL INDICATIONS ABOVE TOP OF TUBESHEET l | |||
0 TUBES WITH AXIAL' CRACKS CONFINED T0-WITHIN THE TUBESHEET AND ABOVE f* | |||
LENGTH , | |||
- CONSERVATIVELY EVALUATED ON CRITERIA '/OR CRACKS EMANATING FROM THE TUB SHEET l | |||
l t | |||
- , - , - ,- , -e- .- - , s_ ----.m , - -=== e - ._ee.-e+ - - - * * ' c,ewm -- * - | |||
FARLEY -2 1990 OUTAGE PROPOSED BASES FOR TUBE PLUGGING l | |||
OD SCC AT TSPS 0 CONTINUE TO APPLY 1.75 VOLT CRITERIA F0E TUBE PLUGGING | |||
- APPLIED FOR DI RESOLUTION IN LAST 2 OUTAGES AT FARLEY | |||
-1 AND 2 | |||
- NO LEAKAGE ATTRIBUTABLE TO ODSCC AT TSPS FOUND AT FARLEY-1 AND 2 0 NEGLIGIBLE GROWTH RATES FOUND FOR INDICATIONS AT TSBS l O SUPPORTING DATA INDICATES 1.75 VOLTS IS A CONSERVATIVE, NO LEAKAGE CRITERIA | |||
- PULLED TUBE, FIELD EXPERIENCE AND LABORATORY TESTS APPLIED IN EPRI PROGRAM TO DEVELOP PLUGGING - | |||
1 i CRITERIA FoR ODSCC AT TSPS l | |||
PLUGG1NG LIMITS FOR PWSCC IN ROLL TRANSITIONS INSPECTION REQUIREMENTS 0 100% NDE OVER ~ 2" 0F TOP OF TUBESHEET II) 0 QUALIFIED NDE TECHNIQUE FOR PWSCC IN RT NDE QUALIFIED FOR DETECTION OF PWSCC IN ROLL TRANSITIONS BY ACCEPTABLE DETECTABILITY THRESHOLD AND DEMONSTRATED CRACK LENGTH MEASUREMENT UNCERTAINTY RPC APPLIED FOR 1990 FARLEY-2 OUTAGE II) | |||
(1) REQUIREMENT CONSISTENT WITH EPRI REPORT m - -py + -y | |||
l i | |||
PLUGGTNG LIMITS FOR PWSCC IN ROLL TRANSITION : | |||
DEFINITIONS 0 AXIAL CMACK(1) | |||
AN AXIAL CRACK NETWORK LENGTH-WITH l MAXIMUM INCLINATION FROM THE TUBE AXIS SUCH THAT THE C%i,tJUNFERENTIAL - | |||
PROJECTION IS _ ?j 0 , ROLL TRANSITION II) | |||
TUBE AXIAL REGION OVER WHICH TUBE DIAMETER CHANGES FROM--FULL EXPANSION | |||
' IN THE TUBESHEET TO THE NOMINAL TUBE DIAMETER i | |||
0 F* REGION I1) | |||
; THE DISTANCE FROM THE BOTTOM OF THE ROLL TRANSITION TO THE F* LENGi1 0 | |||
CRACK LENGTH CHARACTERIZATION II) | |||
CRACKS EMANATING FROM TOP:OF TUBESHEET q CRACKS INITIATING A50VE TOP OF-TUBESHEET (1) | |||
DEFINITION CONSISTENT WITH EPRI REPORT. | |||
4 1 | |||
,, . , , , ,m. | |||
s PLUGGING LIMITS FOR PWSCC IN ROLL TRANSITIONS DEFINITIONS (CONT'D.) | |||
O CRACK GROWTH ALLOWANCE - ACG(l} | |||
ALLOWANCE FOR AVERAGE CRACK GROWTH BETWEEN INSPECTIONS BASED UPON GROWTH OF ' | |||
MAXIMUM TO MAXIMUM CRACK LENGTHS BETWEEN INSPECTIONS FARLEY-2 1990 OUTAGE CRACK GROWTH BASED ON EPRI REPORT NP-6864-l CRACK GROWTH AT SUBSEQUENT INSPECTIONS TO BE BASED UPON FARLEY-2 GROWTH RATES FROM 50 TUBES LEFT IN SERVICE O CRACK LENGTH HEASUREMENT UNCERTAINTY - A NDE DEMONSTRATED UNCERTAINTY ON CRACK LENGTH MEASUREMENT BY NDE INSPECTION TECHNIQUE BASED UPON QUALIFICATION OF FIELD NDE AGAINST ACTUAL CRACK LENGTHS FROM PULLED TURES 0 MAXIMUM ALLOWABLE CRACK LENGTH (1) | |||
MAXIMUM CRACK LENGTH THAT CAN BE LEFT IN SERVICE BUT SUBJECT TO CONSTRAINT THAT PREDICTED SLB LEAK RATE IS LESS THAN ACCEPTANCE LIMIT (1) DEFINITION CONSISTENT WITH EPRI REPORT. | |||
_ _ _ _ _ _ _ _ - - - - - J | |||
l l | |||
PLUGGING LIMITS FOR PWSCC IN ROLL TR CRACK LENGTH LIMITS (1) | |||
O CRACKS EMANATING FROM TOP OF TuBESHEET MAXIMUM ALLOWABLE: A1 = 0.52" - A gg - ANDE A1 = 0.35" O | |||
INCLUDES TUBESHEET CONSTRAINT EFFECT ON ALLOWABLE LENGTH 0 | |||
AXIAL CRACKS INITIATING ABOVE TOP OF TUBESHEET MAXIMDM ALLOWABLE: Ag = 0.35" - A Ag = 0.20" CG ~ ^NDE O | |||
DOES PCT INCLUDE TUBESHEET CONSTRAINT AFFECT ON ALLOWABLE LENGTH 0 | |||
CRACKS WITHIN F* REGION | |||
-. CONSERVATIVELY GROUPED WITH AXIAL C EMANATING FROM TOP OF TUBESHEET l | |||
(1) | |||
I DEFINITION CONSISTENT WITH EPRI REPORT. | |||
i | |||
) | |||
PLUGGING LIMITS FOR PWSCC IN ROLL TRANSITIONS SLB LEAK RATE EVALUATION REQUIREMENTS 0 THE PREDICTED SLB LEAK RATE BASED ON THE DISTRIBUTION OF CRACK LENGTHS LEFT IN SERVICE AFTER EACH INSPECTION SHALL NOT EXCEED 40 GPM PeR S/G 0 CRACK LENGTHS FOR LEAKAGE CALCULATION A | |||
=AM + ^CG + ^NDE A = MEASURED CRACK LENGTH M | |||
0 METHOD FOR LEAK RATE ANALYSIS THE METHOD USED TO CALCULATE LEAK RATES SHALL BE DEMONSTRATED TO BE APPROXIMATELY A PLUS 2-SIGMA CONFIDENCE LEVEL RELATIVE To LEAK RATE MEASUREMENTS ON PULLED TUBE ROLL TRANSITION CRACKS AND LABORATORY INDUCED AXIAL CRACKS , | |||
N | |||
-__ _ j}} | |||
Latest revision as of 14:48, 21 December 2020
| ML20066E509 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 12/31/1990 |
| From: | Whiteman G WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | |
| Shared Package | |
| ML19310E511 | List: |
| References | |
| WCAP-12804, NUDOCS 9101220058 | |
| Download: ML20066E509 (74) | |
Text
, ', . .,
. ~ # ,
~ "
." i i , i'. [d,,!,g'
- p. 3 $4
7.l ,, -
- i - -
. . - - ..- . . Je *- 6
.' ,:r ,' .-' .' ' .~.- . 5 **
~
. .s - - ~. s 'l . i. .e . ..
,f* $ E. . ' '
".*U' '
- g ,% .~: . . . ' * .
/M.'*. f, . y,,g g ! . [,.q.h- "'*' . *v: . .. #.>.
- , . - - .. .. ~. - - - .
. * .' .. - - "L. c
- f, d. ~ j I ;\ $* ; , '* "; . ,.hI '5'. *
- //?.",j[.}- ,.I 4 ," ,
- . ? g* f.. ,,,'..;.._., lJ f, E,y , j , " , ' , f s -
. . ; a , . f * .'*
- I t [ );, ' \ ^' ,
,._n' n*
. _ . , , ; - ? ' ,. . . . . ' . '".-
5
'er:- *
. j.' N ,
$' _ .a. . .
ei
- ' ... .cc ~ - .& r' ..
,' . , . . . . . ; .c : .
^y , y , ..' .' * ; U ' . ' . ,. - " l . ,. ', % -
f .
g.
)- '
"*'.,'_k
- ~ ~ D
!. '. . n s' ' .' '
' h i! 3, .-... . .
. '. * ?: % ,7-[ T. -
he . ' ' ' .. 'UM@ML .
i
' / . . f *5. I ;
- 1
. ,n t 'I,1, rter .;%* gis(Wpyp .h4%
t
-Q. th At / ~,e' j
,7
'k--
t
.. Q . .. , .. '. ; . : e . .. .- -
f' [' i, h*yby'& ..
j (M .- * * . 6.'J .9
"'*ai, s ,, .
- h' '
[ 4.', '. ; 3 b 'c. ' ..,. , -' !,i,[i
y
, p ;f.) K vil Q..
. , ., ..}*,j' . ,7 '; } , . . v . . , - - . ,.Q ' l , '
. /* ' - :, ,l
., g ,1,t'c f. . "'. . , . .= ::
.p , y(.'q 7l) . .; 5 ; .. _ ; ' , . ?. '
' ; ' . ' '..L . ' . * - *3' 9 y'.y? .. " . ' . .. :
.) _ . ., [ . ; . ; . . . - ;L.-
5.y ?
. ;. . .; 'q;,
,[ ; ;<_- .b .[;p.y y ;. ; { _ ., 'g . , ,. v ,q. (_,.:}. ,
,. . . . . ,, . . . .a
.(
., , 9. [ , . ,'
p v ' _.;.9l. ' _ y . ,%g. _ . , ' ' . . ;f. ,_ _ ,
' >: \.'. , _ - '2_._.. _ , ;)._l f.9 ; f.;: , . ' ..; ' . ; 7, _G_. .
. j -
~~: .
?. V '. _ , :- - ', _' ~ ? ? ' '; bb b . Nl , .,Y $ i . l - _ f ?. l 3 ', '. _ [ . i " l . . 7~ I.*.,'. * :. i. ;Q;"
f;f '
6
- .l .
,, '. - c . , $ gJ . ?ll3.$ * . ' . '
n.
Nll, .
5
{ q g,Y ;. ;, W * ' ?kih ".'l,W ' -l'.l ,
' I' l . I . .? . .n; f. .. '
. 'a .3:,g , ,o y , ' . . < y.,
t .
1.'
j j. , ;. ts. [> ., % .
. i
, -.,0....
.4.: 4
+**l>' ,. .-
i..
.;,- := , .
P
- *~ *, ' . , ,
i 6 .
'. g'I I- ,. -'; .. ..%
t
,., ..;- *k "; - .'.-l.,'. -
1' q 7'-(. ' . .y." ' y%. f. .,1 . . *
',]. ; . . . , * * .' .' :c Q p pii / M :;a < E:J- 1 d F;. 'tc
- Y n-
! l u .
5 I S . M.' . . f..: : .$ '[ ,. . .
i p/ . ., ;... . . " - , . #f . * . . u.( s .,'
S ,4n .c. -
$';. ;,:.'.*3y - ' .' / E... t .
f, "'l 3 .'
- l. '
.; i ,ty,' .p%,..**.v. ' .
_;.,_ ,,_.,u.., ;, ': ,'
,i 4 . (T , ' d '. ' '"
'y'. '
. , i { '7.,[ . ', g*. .*Js'(.- '-' ,.l,. 'J," ,,s, '- ':. i .
3f , .!"' , ' ' ' , ~ [ ." ,
't-l', , .. .-
- 3
'y _ .^ _
. I; . ? ' ' ...Y v" : .g'. . , ' G -g , . ' , - ,'-*- ,c
' ; p, i ;. ' ' . .- lp : ' ..
,--7,'. .... Ar .ic *( y,. ?L'-f a}l ';.n, ;i ',.'>,.'
. (j . i & .7. T ;; . 'af J **a ' . 4/c.
. , ' g : a w. ; ,* . . ' . :... . : ..s%
. '.. 3'(' f ,) . 7 $ ~ .
z.
. ; . }
3' ,,-
.' ' -, - , ,.. .j ,,
g" 4.-..;g-
=
$- ,, y.g . ..
9.., * ,-
a- '
' ' .
- i- '
. 1. ,,.
- .',.J.l' '. .
.. t
,\, kly' w D' hl .u.. ?Miq n. .= p- ?.T *;- " ,' ' - E:
' .m RI. . i' ' Ys ' -
~ , ,. ' . . : g l,' $ zi' i r :.:;.; .',-.
'V' -
. ' ~,- '?,
, 'y r - p . ' ' y[.. ', [ '. .; 2
'h 5 ), . $ [ ' .,^ ". 4 -, , ' . . ' i .. -jc.9
. I (;I n' 'l ',[' - ' - i: ,+'- '
,' ' e' '
...I'. ' d', ..I.
',' jNj:.'7 :b l. t c . i. .
i.4
' ' . , , '.',i * ' .. i
~$', . , ..- 'yb -; * .' ., ,'
g 5
- fN- .
3'. y . . - ,g , . , ., , ,
.: i.' ' .. -' '
. . . . ' . Y., yl, ',',' - . ..l ,' ^ ;
- l '. [. l I- .: -
)..$,., j+ .. .s. s. . - ,, . . , - '.e - . p ,. - 9 <
', ['
' " ' N
.' * -g i
.* y...kM..'.$.M^:'.;;..,.' *
,i*
. .,..,(, s- .. . . , ,. .. _ . ' , ' ' - ,
..,+
p s i
, [ ;g:... jy i.l , .. . ;; ** '.
'e',"-. ; -
., ' .. ' . . * . . - .-~i;. '<,i,. ,.l .,. .i _*' . ' .
-..l,. '.'
p r- , ;. . .
i . S
+ ; .-
.r, ...y s
, . , . .. .- a f-
,'('.. . , .:. ,{ 'g
.Q' st d,, ,s 1 h{;g.{p.,n , ,- '
...e
- - ..p ', ,' .' [, ;,
(, . .;
u . . ' ' / . \, .(. . y* , .
i e y .r . . g ': - ys .
7
' :< g.. .D , ' : ,*;i".,~?- #-
N ,- '
t
.1, . ' . - -
f ' '
4 2[;.* E $ l4 l.\.' . . . . sT l' ' , '
,..d ' _ ' .' ,'.;.: ,. ~. I' ' ' l.' 'r, . [:?'.y' :.;.*
\ }f
. ' y .1; _' N. .;- i' ".: " . .g' . L: . '. _ . y . . 'l'. . , c .- - -
. ,.l ,. -
' (.;
....l,' y. -
- J . .
if.@/
sk r O . .. ' " ; ' ' '. N .. :.- :* ' -
. - ',..'- J" ' .' f
- j '. . '., ., '-;.[- .'. '
Y.Y f,_g ' lc ': 0 ' .[, ; ? .'f ' Li) . .j.y ' ';f" -
. :.h d \\ ,' . . .lN .
- . ' . - I' .
l'"l1 ) 5,% ,* ;'. ' . J;. , - - ..i" .. . . .p ". .; -
. - - 'g .
. g, f P. . *
.'N[ ; ! , . - -
."f , . ,
V &. ij .
? 4_. ', . ~ ,. 3' y. .' ' ' -
=.,,- l',.5 . .
6 ! ;.... -
y
' ] _l : 3 .c ' r. ..'. .... .'-. , ; , ~ L ' . ' l_...,'?,
'\? 1\ w -i '.y kT_'S' -
. . '..e. .
' ' . 'd '_. l} .Y:': '. l$ . Rh? .. .. ;[ .
'. ? I ,
' ), ' - - '.:' '
.p..' '
.h " " W. ' . _ ' .
.: ' ] ' w' ~. ' . . - , ' : h '.?l . . .., .-4-fIf C,)p',.'l A Ti
\
- t.- #,* [, ' ' ' ;I,
, 7 ...,.[. ,
l.: y. , . --- ,.
' ;- ,,p,p;.;:.s.. -; : . ..
o s.; d s ,q ?'-y < ' .s. '.f,j * -u .e
- ** *m gs.
'.1, 'M ii .," 7". i ( ' ) ;, Y..y - .i. ,. 4 l;,#
.~ y - i: a ,,; y 'Q.lyn, .1'. ,s,,: [- U,.'E- -[
- 5 , , , - - . .. , , . . . , . ~ . ,. , . .
c ..g-
..s..
+, " *
,y - ' . e.
j (i h ,p ' ,; . Q
. . . . . . , i
'f . .
.\ 4. ". . ') ; ' ? ,s'..., _, f-* * *
,} 4 ;t. ,
- i,- ,,, . . , ,. ,. . . , ' , . - g.- '. .. . .
s d.,,. ,
-l, y
'.,' ? l. -
W *? l' . ',.*-
N? . * .- "
i l * .."* 4 . '
y .; ; W' N.--: *. ',-- ~ - . j , ;' .*- - : ,,.v.,.. y' ..: .'y:;-
a, y. :, -, .. ,g.;
ez':.,a? .. cx. ^p= * .:z.. ?-
j'. Y' &Yl,l,' l's'.Y v. e
+ , . l - f; fm ..* . l,M. . n . ?p',h;' -
. ,
- l;0 . M. [ , . '4". M . ' W
...a - -
,, .g '
. h;i'j n.,;. 7 t L
' r:, ' . -
'":9 **
- 'y g l-[$.,'f f 4
'A '
%> ;. b, !',f',','; . p' . ,. l,il r :
',W;' V- I5
. .'.,; T. n: > 'l
- h. '
' -- i.*u .;_
Ml.*l: ? }'lg' } -q-10f.d[,..+ ..... . , . ' .':."["','*. -'.*- ; -
%- 4 M % .% ' ,.% . c l .; h gl.', p l 4 % . '%,. b'.W ':g, '<
m' . l- l..%:}l,.&' . , . -.' x4-_, 'Y{ , %$sl _ l k ]'....:
- y'-- .. i
- 'e- ,
ft n
.Q * * ,
' 'n
- ,; ;[
,m q_:;.c
. w;.',-p.l4.};lly: wt g .- , .
_ :...vwn, l } jf,l,r* : u ;y,t L, ..,m. m;::
_.t .-: . . :.,..v,. a
. ;:*.; ... . - .-; .- c. ..:n .(,:~ ;, ,:. .
-m Q;%y a .+ .. . n . :n.:.c/ ~;,
q _a. .
.'i- N ;
.a . 'hw(A,)w;hh;
. 9 m v. : a..% M. -
~.kY wsN3.., ,;'.h(c.
O:% 9 , Y '*O c. . ;,,;-
- +. , 8 . ,
7- .
7.[
.a f,, (v. .ih , v. - cf.h., w.h.
.x m . a ,43 m,:a .P . ' 'm m .;
. -; ~c v y, ..4.>n.(..".i L E gg. f.N ). 3: g~9;E::g.
S. w. 4. ') ' ' .;
[j.L - ~:-,,, - &. , e;?m.' :S% 6 g:
..n g g , s. , y . y?. L.
- y
- 7 g+73 ;.y v4 wm w lg,, mm . . ;wg. y. q,~; w . . L' .lg,h c
am Io12200se 93o197 If hDR ADOCK 0500034e M /fy.,y Q 7? Q Q . % .'.',. Q ,j,)
L h'M MMA ;g,,
h.::'gP]
"!5t Ek __
sg.hsWJiG-40 FOR UNRESTRICTED DISTRIBUTION DATE.. _
W EC 1
I 1
1
-q 3
1 9
l 4
3 1
d 3
1 1
O 1 4
j a
WESTINGHOUSE PROPRIETARY CLASS 3 q WCAP-12804 i
I d
i i
STEAM GENERATOR TUBE PLUGGING LIMITS i PRESENTATION MATERIALS December 1990 G. W. Whiteman l
l l-1 l\
l WESTINGHOUSE ELECTRIC CORPORATION I Energy Systems P. O. Box 355 Pittsburgh, Pennsylvania 15230 l
(C) 1990 Westinghouse Electric Corporation, all rights reserved.
- )
WESTINGHOUSE PROPRIETARY CLASS 3 Th'.e proprietary report bears a Westinghouse copyright notice. The NRC is permitted to make the number of copies of the information contained >
in this report which are.necessary_for its. internal use in connection with generic and plant specific reviews and approvals as well as the issuance, dental, amendment, transfer, renewal, modification, '
. suspension, revocation, or violation of a license, permit, order, or regulation subject to the requirements of 10 CFR 2.790 regarding- 4 restrictions on public disclosure. Co)ies of this report or portions thereof made by the NRC must include tie copyright notice-and the.
proprietary notice. 3 l
- -_ -- A
- i A meeting-was held on November 6,-1990, betweenfAlabama Power Company, Westinghouse, and the NRR-to discuss alternate steam generator-tube plugging criteria for the Farley Unit 2 steam generators.
The following topics were discussed by Westinghous'e:
- 1. Overview of the Farley Unit 2 Assessment
- 2. Farley 2- Specific Tube -Plugging Criteria -for Expansion Zone Primary Water Stress Corrosion Cracking in the Roll Transitions
- 3. Steam Line B*eak Leakage Limits for Farley. Unit 2 !
- 4. Farley Unit 2 Eddy Current Inspection Summary 5 .- Farley Unit 2 Tube Support Plate Criteria-i l
ODSCC AT TSPs FARLEY-2 PLAN TUBE PLUGGING FOR FARLEY-2 1990 OUTAGE O PLUG TURES EXCEEDING 1.75 V0LT AMPLITUDE O BASIS
- PREVIOUSLY APPLIED FOR DIS IN 4 FARLEY - 1, 2 OUTAGES 0 NO LEAKAGE ATTRIBUTABLE TO INDICATIONS AT TSPS
- SUPPORTED BY PULLED TUBE, FIELD LEAKAGE EXPERIENCE AND LABORATORY TESTING AS A CONSERVATIVE, NO LEAKAGE TUBE PLUGGING LEVEL
- SMALL GROWTH RATE FOR INDICATIONS AT TSPS SUPPORTING DATA O CURRENT EPRI PROGRAM TO DEVELOP PLUGGING CRITERIA FOR TSPS
00S00 AT TSPS EPRI ALTERNATE TUBE PLUGGING CRITERIA 0 DEMONSTRATE EITNER OR BOTH OF:
TSP CONSTRAINT TO PREVENT TUBE RUPTURE IS PRESENT AT SLB CONDITIONS PLUGGING LIMITS PROVIDE ADEQUATE MARGIN AGAINST TUBE RUPTURE EVEN IF TSP CONSTRAINT IS NOT PRESENT 0 Tw0 PARAMETER PLUGGING CRITERIA BOBBIN COIL VOLTAGE AND DEPTH INDEX LIMITS MUST BOTH BE EXCEEDED FOR TURE PLUGGING VOLTAGE APPLIED AS A CRACK SEVERITY INDEX BASED UPON VOLTAGE DEPENDENCE ON CRACK LENGTH, DEPTH AND LIGAMENTS (VOLUMETRIC FACTORS)
VOLTAGE, DEPTH INDEX LIMITS ESTABLISHED BASED ON CORRELATION WITH POTENTIAL FOR TUBE LEAKAGE O LABORATORY INDUCED CRACK SPECIMENS, PULLED TUBE DATA AND FIELD LEAKAGE EXPERIENCE USED TO ESTABLISH LIMITS 0 PLUGGING LIMIT TUBE PLUGGING IF:
AND V>VL-VNDE - VCG D>DL-DNDE - DCG 1
l APC reR 00 SCC AT TSPS VOLTAGE / DEPTH INDICES VOLTAGE - CRACK SEVERITY INDEX e
FEASIsILITY EC TESTS PERFORMED 9 "
VOLTAGE INCREASES WITH CRACK SEVERITY WITH INCREASING CRACK LENGTH WITH INCREASING NuMsER OF CRACKS OF SIMILAR LENGTH WITH INCREASING NuMsER OF CRACKS AROUND Tust CIRCUMFERENCE WITH LOSS OF LIGAMENTS AVERAGE DEPTH INDEX e
AVERAGE DEPTH (PHASE ANutt) USED TO SIMP INTERPRETATION AND IMPROVE CONSISTENC ANALYSTS AVERAGE CRACK DEPTH AND CRACK -NETWORK CONTROL LIGAMENT FRACTURE AND THUS LEAKAG CONDITIONS
8 l'fO Z '?v
_ i _
575y t
92t, 3
a
, c I.97v e
- y E_ a
, ; 3.59, b W f
=
4 k
A _ k4<asm 4AbM@OM MAe 4 mao 4 w.- - as6mmmm r' a es--,ar- - avs-.m-.-wA- nv u.-,- m.- ---------v---- _ - - - , , . , - - . - - _ _ _ _ _ _ _ , _ _ ,
4
~1 1 +
_ Z.0c , 1 l
l l
l l -
i 1
i I
-.] $
I l
l b ,
~
\ ._
-g .
i 3
1 -
u_ -
7 1
E l
l .
l e
' ' ~
Y
- r 7
~
.[2 h- y= ! y e 2 i_
?
e 9
EPRI PROGRAM APC ron 00 SCC AT TSPS NDE EVALUATION e MODEL BOILER SPECIMENS e DOPED STEAM SPECIMENS e AVAILABLE PULLED TUBE DATA ALTERNATE PLUGGI'NG CRITERIA e MooEL BOILER SPECIMENS e PULLED TUBE DATA e FIEto DATA Fon LEAKING TusES INFLUENCE OF IUBE DENTING ON LEAKAGE e FATIGUE SPECIMENS e DOPED STEAM SPECIMENS BURST TESTING e H00EL BOILER 3PECIMENS e 6 DOPro STEAM SPECIMENS e EDM NOTCH SPECIMENS
EPRI-PROGRAM APC FOR-ODSCC-AT TSPS l t PULLED TUBE AND FIELD DATA
- t i e PULLED TUBE DATA SUPPORTS <
~ ~ VOLTS (UP TO -
l 1004 DEPTH) AS ACCEPTABLE (NO LEAKAGE) l t e
-S t
FIELD LEAKAGE EXPERIENCE (3 TUBES) ABOVE , VOLTS ,
- .y e INADEQUATE DATA IN ~ . VOLT RANGE RANGE OF DATA NEEDED FROM MODEL BOILER SPECIMENS LEAK RATE TESTING OF LABORATORY SPECIMENS i
e i CURRENTLY INSUFFICIENT MODEL BOILER. SPECIMENS ! TO CONFIDENTLY ESTABLISH VOLTAGE-CRITERIA DIFFICULTY IN GENERATING MODEL BOILER SPEC1 [MENSWITHTHRU-WALLCRACKSAND-
. . VOLTS (LOWER BOUND OF MB LEAKERS) e SLBTONORMAL_OPERATINGLEAKRATERATIOB0UND BY FSCTOR OF '
~
VOLTS) ~ INDICATIVE OF INSIGNIFICANT CRACK DEFORMATION-UNDER-SLB CONDITIONS l e TUBES _CpACKED1
~
SHOW NO LEAKAGE EVEN AT SLB CONDITIONS (8 SPECIMENS) e MAGNETITE PACKED CREVICES REDUCE LEAK RATE COMPARED TO OPEN CREVICES (3 SPECIMENS)
TABLE 5.1 - PdLLEO TURE DATA BURST PRESSURE Robbin cett E!AD1 ._ _ DestructVa fram
.Y.2!3 04 21 eta &R Mar D*eth _ Burnt preneure fen 1}
LJLEQibO ) No Laak ggg! A2 9 > B1 O.2 f W 1. Crack networ shows many,k lengths with through wall crack lengths in parenthes small axialcracks
- 2. . exam N.M. . NotMeasured
- 3. ,
Values in parentheses are estimated tube burst pressures b obtained from destructive examination . metallography ased upon crack morphology This pres P obtain a large leak at SLB conditions concitions, forbe these sure would required to -tubes with no leak normaloperating 4 Thin, peripheralligament remaining teads to an affective th rough walllength of 0.1',- 33 t J
TABLE 5.31 FIELD EXPERIENCE SUSPECTED TUBE LEAKAGE FOR ODSCC AT TSPs Bobbr1 Col PJaat inweibn Maha Qtab comments B1 Outage before - 3 suspected leak Outage following suspected leak E Outage following suspected leakage Outage folkwing ,
- EC cahbration data needed to confirm voRage level, Notes:
- 1. Reported voRages were adjusted to normanzatbn in this report of t
l:l!lill 3 U 2-a t D a X D n i o t c e 2-p C s i n x X l e l a l n a a C h t p i n D e 2-b e B 1 b g 0 o a r 5- B e v e A r d l u e M o g i C i F F n 1 d B n M t a o S - e b u T 2-de A l l O - u P ) k a t e ( s 1 k
- o A n B a i-t s
l o V
- [ll1ll, 1 l
' i
..--si.--i...----;-ii = ' - ' -
- l 8 l \
C 5 3 i ~l E h $ X
' N w= - x h4
- u
$. ~ . .
E 7 2 ? a I e
~
, 4 4
E j o 1 I w 1 2 3
_ Normel Operating AP Leek Rate Dets Base 3 i 8 MB-SmaN Leak l Volte 'E MB-Large Leak t U MS-No Leak a Fleid-Leakage' t Bottin Coil Average Depth index _ 9
F SIGNAL PARAMEIERS FOR CRACKING
-9 ^
CO b O D P a O_ Z ; u)
~
THROUGH-WALL PENETRATION (PERCENT)
i 3 "1 1 I f-"1 11 3i iie;$lli; a i
, . .a .x <
i
.. I 2
4 a -I" d i w I 4 I 3 1 I ia S
.. j i
- TABLE 11,2 !
LEAK RATE TEST DATA FOR DENTED TUBE / TSP INTERSECTIONS Dort Dort Thru Wal Samnia i D. Open Crev6ce Jgg g Crae* fin ) L ask R ate IIM 6 Measured Leak Rate Ght) Normal Onar_M Fatigue Specimens FAT 1 - S FAT 2 FAT 3 FAT 4 FAT 5 FAT 6 FAT 7 FAT 8 FAT 9 FAT 10 FAT 11 FAT 12 00 SCC Specimens 7
~
BW1 BW3(3) mi , BW9 BW14 e Notes:
- 1. Fatigue specimen leak rates are calculated leak ratee(:
- 2. Crack network length (includes ligaments)
P
- 3. Through wal crack length extended approx,14' otusade TSP.
l 1
EZPWSCC IN ROLL TRANSITIONS FARLEY 2 SPECIFIC PLUGGING CRITERIA Tune RUPTURE CONSIDERATIONS ALLOWABLE AXIAL CRACK LENGTH COMsINED ACCIDENT EVALUATION LEAKAGE RATE CALCULATION OPERATING LEAKAGE RATE LIMIT t
EZPWSCC IN~ ROLL TRANSITIONS ALLOWABLE AXIAL CRACK LENGTH EPRI NP-6864-L BASIS CRITICAL CRACK LENGTHS BURST CRITICAL CRACK LENGTH PRESSURE N0 TSC* WITH TSC* (PSI) (INCH) (INCH) 1457 0.99 0.99 2650 0.64 0.72 4371 0i35 0.52 TSC IS TUBE SHEET CONSTRAINT. i
l EZPWSCC-IN ROLL TRANSITIONS ALLOWABLE AXIAL CRACK LENGTH EPRI NP-6864-l BASIS NORMAL OPERATION PRESSURE DIFFERENTIAL e LIMITING CASE WITN FACTOR OF 3 3 ts F = 3 (2250-793) , = 3 (1457)
= 4371 PSI REFERENCE CRACK LENGTH = 0.35 INCH
\ i ALLOWABLE AXIAL CRACK LENGTH, A e ACCOUNTS FOR GROWTH,-EC UNCERTAINTY.AND SYSTEMATIC EHR0R, AND TURESHEET (TS) CONSTRAINT WHERE APPLICABLE A = 0.37 INCH WITH TS ,COMsutAINT A = 0.20 INCH WITHOUT TS CONSTRAINT i a h 4 1
EZPWSCC IN ROLL TRANSITIONS ALLOWABLE AXIAL CRACK LENGTN COMBINEo ACCIDENT EVALUATION O SSE PLUS LOCA On SLB/FLB PRIMARY STRESS AT TOP OF TUBESNEET i l 0 PRESSURE DIFFERENTIAL NORMAL OPERATION (1457 PSI) SLB/FLB (2650 PSI AFTER BLOWDOWN) l LOCA (-793 PSI AFTER BLOWDOWN) O CROSS-SECTION BENDING STRESS-q 4 4e CROSS-SECTION BENDING STRESS IS WELL BELOW THE MAGNITUDI REQUIRED TO NAVE AN EFFECT ON BURST PRESSilar, (WCAP 7832-A) _osc 0 ALLOWABLE AXIAL CRACK LENGTH DETERMINED ON THE BASIS OF INTERNAL PRESSURE ONLY IS JUSTIFIED i
)
COM81NED BENDING AND INTERNAL PRESSURE B i r ON TUBER WITH THROUGH WALL SLOTS
,, g, /, c, i
4 i P /2 P/2 2"- r = 3 '- 1 2 -2% U I f ( 3 0 0
/ \ )
d h P/2 3 1 2 P/2 Externally Applied Sanding Loed and Locatiors of Through Wall Penetrations
i
- I EZPWSCC IN ROLL TRANSITIONS l
I LEAKAGE RATE ** ..,U LATION ! 0VERVIEW I PROBABILISTIC TECHNIQUES ARE COMBINED WITH A DETERMINIETIC MODEL FOR LEAKAGE FROM A SINGLE AXIAL CRACK TO DETERMINE THE LEAKAGE RATE FOR THE l DISTRIBUTION OF AXIAL CRACK LENGTHS. POTENTIAL LEAKAGE IS OBTAINED FOR ALL AXIAL CRACKS DETECTED BY RPC INSPECTION ABOVE THE F* DISTANCE WITH CRACK LENGTH LESS THAN ALLOWABLE. . l I a i
,_ . . . _ . . , _ . . . ~ - - - . . , . . _ . . . _ _ . _ _ _ _ . . _ . . _ _ . . _ . . _ _ . . , _ _ . . . ~ . . . . . , , , . , _ _ , . . _ _ . . _ , _ _ _ . . . . , _ _
i EZPWSCC IN ROLL TRANSITIONS l.EAKAGE RATE CALCULATION AxrAL crack FLOW MODEL (CRAckrto) AssuMPTroNS
- a, c t
l 1 l l l W eld
,----r < - - - , . , - ---,-,,----w-, r~ ,-
l l EZPWSCC IN ROLL TRANSITIONS LEAKAGE RATE CALCULATION AXIAL CRACK Flow HoDEL (CRACKFLO) FLUID AND Patssunt DmoP CHARACTERISTICS
.a, c 1
l l l
, , - , - - - -,.,,,,,.n... - . , -,. , ---- . - - , - ,-r,. --r
i EZPWSCC IN ROLL TRANSITIONS LEAKAGE RATE CALcutATION AxrAL CRACK FL0w Ho0EL (CRACKFLO) AXIAL CRACK OPENING AREA H0 DEL
.. s,c I
l
, _ . , , . _ _ _ _ . - . . . . - - - . - - - - - - - - - - - - - - ~ ~ - ~ ~ ~ ' ~ ~ ~ ' ' " ~ ' ' ' '"
EZPWSCC IN ROLL TRANSITIONS LEAKAGr RATE CALCULATION 1 AXIAL CRACK FL0w N0ert l (CRACKFLO) i SOLUTION PROCrouns _, d, c M
, -- - - , - - - , , - -. . , , ,, - ~m,,,,w ,,-,-r---e----r--
t I i EZPWSCC IN ROLL TRANSITIONS LEAKAGE RATE CALCULATION t COMPARISON WITH EXPERIMENTAL RESULTS ' NORMAL PLANT OPERATION i 8 IN GENERAL, MODEL YIELDS A GOOD PREDICTION FOR THE TREND OF LEAK-RATE WITH CRACK LENGTH. o ! EXCELLENT AGREEMENT BETWEEN PREDICT MEASURED LEAK RATES IS SHOWN FOR FATIGUE CRACKS. l e FOR stress CORROSION CRACKh GREATER SCATTER IS SHOWN. SCC CRACKS ARE CHARACTIRISTICALLY SMALL ~ 0.1" LONG DIFFICULT TO DEFINE GEONETRICALLY SUSCEPTIBLE TO PLUGGING
sum um_.ww_- -y-m_----- , _ ,_- - ,-- , .- ww. mwme., 4 *eastedJ_.w hw 4_ Me.- $ e S- h 44.2e -4d4A4h,4# 4A-e edk eb .,-4, - _. 4%-- _ ,.he,ps ,a e a ,wr.%,m m ee4..we.a.i i+es%_wa .4m,a,w-q u Cn t Wi
& I C I M
L.LJ J Q W C b L1J J Z 1 a W F-- u Lu H a W $ C ' Lt Z ' W W
'E
! H i W (D ! Z , O tn H T CL Z O U. 1 (Nd9) 31YW >lV310313IO38d l l l
EZPWSCC IN ROLL TRANSITIONS 1 LEAKAGE RATE CALCULATION l l COMPARISON WITH EXPERIMENTAL RESULTS STEAM-LINE BREAK CONDITIONS
# IN GENERAL, THE MODEL OVER PREDICTS LEAK RATES FOR SLB.
8 IN ORDER TO IMPROVE PREDICTION CAPARILITY, l EMPIRICALLY BASED ADJUSTMENTS ARE MADE TO THE MODEL. e,c nies t s.Ny .-3-w,. 2-- we y e-+--% ,,-^-- ww-vy . -- - - gw-- w ' ,
--+--7 + - - - -* g
a-- ,.-,n_m.---__+-mA,JA,-S -----J~ m s---,,wm.- 14A.-- - Ja - a a -- 4 au .1 4 .4 a.. B >A .ma. _ _ _ r aA., 1 tJ l T ! Cn t Wi F- 1 t 4 C M i LL) J Q W k 05 LLJ Z Ca Q LU H F-a 3 H . - Q W W i cc N Q. cc W z :w: d W a X
& c3 LLJ CD Z
O Cn H T Q. E' oi al (HdS) 31YW >lV31031DIO38d i
~ ~ -. m. -+- , e r.gg,. 7,-w-i- e .i.---w
% -w,--m5-.
I t EZPWSCC IN ROLL TRANSITIONS 1 l LEAKAGE RATE CALCULATION PROBABILISTIC METHODOLOGY l a MONTE CARLO TYPE EVALUATION IS PERF0P)tED BY SAMPLING CRACK LENGTH FROM A GIVEN POPULATION TOGETHER WITH EACH OF THE FOLLOWING NORMALLY DISTRIBUTED STATISTICAL PARAMETERE:
~
eC r l W W
-- --, ,,--,--.--e.v.., --.
---..,,,.,,w,, - ~ _ -. . . , , - - ,-m. . . - , - - - - -., ..m.,-~,- -. , + - - - + . - -
EZPWSCC IN ROLL TRANSITIONS t LEAKAGE RATS CALCULATION i UNCERTAINTY ANALYSIS i HEASURED VERSUS PREDICTED VALUES (M vs. P) ARE FIT
~
BY
~ l
, - 4,C y _
- A,0 NORMAL OPERATION l
g,c M SLB C0NDITION _ a.c W FACTORS 1 SIGMA 2 SIGMA A, C N.O. ' SLB .
r MEASURED VS PREDICTED LERK RATES - si 4 c,
\
e E 4 8 5 x l l l bEDICTEDLEAKRATE(GPM) -
VERSURE] VS 3REJ"C EJ _ER< RA~~ES a,c r , k a W H C CE M C W J Q W U1 C 1 W E l l PREDICTED LERK RATES, GPM - l l l
EZPWSCC IN ROLL TRANSITIONS \ 1 LEAKAGE RATE CALCULATION l SLB LEAKAGE RATE CoMPARI5oN l Fon EPRI DIsTRIsuTIONS l 1000 CRACKS FRoM 0 To 0.394 INCN (10 MM) IN LENGTN 4 CALCULATION LEAK RATE MODEL J DM) A B EPRI/LAsonELuc _
-. 9 K CunvE 1
! K CunvE 2 CRACKFLO . _.e,4,c NOMINAL NOMINAL
+ 2 SIsMA NOMINAL
~
+ N SIeMA ~
1
i i l i EZPWSCC IN ROLL TRANSITIONS 1 OPERATING LEAKAGE RATE LIMIT j I l EPRI NP-6864-L BASIS REASONABLE ASSURANCE
- -9 OF LEAK BEFORE BREAK IS
! ACHIEVED WITH A I GPM LEAKAGE RATE LIMIT. HILn'7RICALLY, AXIAL CRACKS IN ROLL TRANSITIONS HAVE EXHIBITED LOW LEAKAGE, EVEN NO LEAKACE IN SOME CASES. ACCORDINGLY 100% EC INSPECTION IS PERFORMED WITH MRPC PROBES TO COMPLETELY CHARACTERIZE THE CONDITION OF THE BUNDLE IN AFFECVED REGIONS.
- , 9 THE COMBINATION OF 100% MRPC INSPECTION AND THE - -
GPM LEAKAGE RATE LIMIT CONSTITUTE A DEFENSE IN DEPTH AND ASSURE' CONTROL 0F TURE BUNDLE STRENGTH AND LEAKAGE INTEGRITY. i l l J
.,,-.,,.w, -.r,,,---- -w-. , , - , - , . ,< . ~ -.,,,n,.,.i.-.- , . - ~v=
EZPWSCC IN ROLL TRANSITIONS OPERATING LEAKAGE RATE LIMIT f 1 - ) LEAK BEFORE BREAK I
. 9 ,
l ASSUMING I CAPABILITY
' GPM LEAK RATE LIMIT AND MINIMUM BURST I
i NOMINAL RT LEAKAGE VS CRACK LENGTH 0 WITH TS CONSTRAINT, 3 P BURST CAPABILITY IS ASSURED; 0.52 INCH v5 0.40 INCH, BURST VS LEAK.
-2 SIGMA RT LEAKAGE VS CRACK LENGTH I O
WITH TS CONSTRAINT, SLB BURST CAPABILITY ' IS ASSURED; 0.72 INCH vS 0.60 INCH, BURST VS LEAK. WITHOUT TS CONSTRAINT i O SLB BURST CAPABILITY IS ASSURED FOR -2 SIGMA RT LEAKAGE VS CRACK LENGTH; 0.64 INCH vs 0.60 INCH, BURST VS LEAK. O GROWTH AND UNCERTAINTY ALLOWANCES LIMIT THIS CONDITION TO AN E0C LENGTH OF 0.35 a _..4 -~.. , ,- . . . . . . , . . _ . . . - - .___. .,- - . . . - . . . _ . . _ _ _ . . ._._---_..._......,.-..s. . . . , . _ . . - . . . - .
l 2 _. E < 92 E VS 2X:: 2 _ C R 2 C < _. E.NG ~~ - EXPANSION ZONE ROLL TRANSITION 7/8" TUBING RT 600F AND 1457 PSI ,,, j,, e x b uf E e b "i i [ em b RXIAL CRRCK LENGTH, INCH
l l FARLEY UNIT 2 ! SALIENT ASSUMPTIONS USED TO DETERMINE ALLOWABLE PRIMARY-TO-SECONDARY LEAK RATE FOLLOWING A STEAMLINE RUPTURE o PRIMARY COOLANT INITIAL IODINE ACTIVITY: i 1% DEFECTS o SECONDARY COOLANT INITIAL ACTIVITY: 0.1 MICR0 Cz/oM D.E. I-131
- o
' LOCATION OF POTENTIAL TUBE LEAKS: TUBE SHEET o PARTITION COEFFICIENTS: SG IN RUPTURED LOOP - 1.0 SG's IN INTACT LOOPS - 0.1 o STEAM RELEASE FROM INTACT LOOPS (0-2 HRS.) 479,000 LBM o SITE BOUNDARY x/o : 7.6 E-4 SEC/M3 C1:16
FARLEY UNIT 2 RESULTS OF ALLOWABLE LEAK RATE EVALUATION DOSE ACCEPTANCE CRITERIA: 2 HOUR SITE BOUNDARY THYROID i DOSE LESS THAN 30 REM ALLOWABLE LEAK RATE: 40 GPM PER GENERATOR 1 \ \ l Cl:16
l ) c FARLEY UNIT 2 STEAM GENERATOR OPERATINs HISTORY PRESENTED BY D. D. MALINOWSKI MANAGER, STEAM GENERATOR DIAGNOSTICS NUCLEAR SERVICE DIVISION WESTINGHOUSE ELECTRIC CORPORATION ALABAMA POWER COMPANY /U.S.N.R.C./ WESTINGHOUSE ELECTRIC CORPORATION MEETING i R0cKvILLE, M) NOVEMBER 5, 1990
1 1
)
l FARLEY UNIT 2 PRron S/G OPERATING HISTORY 4 r a
J. M. FAnttY UNIT 2 Tust PLucerHe CHn0N0 LOGY BY CAust Daig Cnig 5/G A $/G B Slft_C Inis, PRastavzca 3 1 - 6/81 4 VtsuAt LEAxt 1 0 0 1 10/82 R0w 1 (Paav.) 92 94 94 280 T TAL 9/84 LEAx (HL) BELow TSP 7 1 0 0 1
'T TAL 1/85 AV8-WaAn 8 0 Tust 1
'O 8 Paav. PULL 0 0 1 3 0 TustsMatt PW5CC 0 3 1 0 0 1 50AL 4/86 1I AV8-WEAR 1 1 0 TusesHear PWSCC 8 5 2
0 D. TSP SCC. 27 40 J J 11* 2A total 11
*(2 puttso) 15 44 11/87 70 Tustsweat PWSCC 4 9 0.0. TSP $CC 16 29 6 14 Fest-$ PAN 44 74 AV8-WEAa 0 0 3 2 0 2 ko!A 4/89 hl TustsHeat PWSCC 1 3 0.0. T1P SCC 2 16 AVB-WEAR 8 2* 10 total 3 0 '
II 7 T/
*(2 puttso) .
J. H. FARLEY UNIT 2
$ TEAM GENERATOR Tust PLuco No
SUMMARY
PLucotNo Tusts PLUGGED TOTALS __--DATE $[QJ (($_) iL6_C INCREMENTAL CUMULATIV[ PRt-SERvrct 1 1 0 2 2 8/80 2 0 0 2 4 6/81 1 0 0 1 5 10/82 95 94 94 283 288 9/84 1 2 0 3 291 1/85 13 1 0 14 305 4/86 11 15 44 70 375 11/87 13 35 61 109 484 4/89 J1 _12 4 _22 ill TOTALS 146 160 203 511 (4.4%) (4.7%) (6.0%) (5.0%)
l FARLEY UNIT 2 CURRENT INSPECTION RESULTS
FARLEY UNIT 2 S/G EDDY CURRENT INSPECTION PROGRAM OcTosER 1990 OUTAGE prose Tusts INSPECTED AND S/G A_ S/G B_ S/G C_ EXTENT dl d E .E dl 6 BonBIN FULL LENGTH 3240 274 3228 276 3185 279 RPC TusESHEET 3240 - 3228 - 3185 - RPC AT TSPs 82 - 81 2 195 - RPC U-BEND 92 - 92 - 94 - BOBBIN U-BEND 92 - 92 - 94 - (Post HEAT TREAT) l
~
L. FARLEY UNIT 2 BOBBIN INDICATION CALLS l ALLSTEAM GENERATORS
@ 350 O
F 300 -- ---- - - - -- ----- - - -----
$ DATA AS OF11/4
_z 2 s 0 O 200- -- ---
=- -
x - 0 150-w O
+ 100--- - - - - - - - - ---
5 ( yw -- E o_ 0 i EE._ i J, - TE F* TSH TSP LOCATION 1989 E 1990 .
4 FARL FY UNIT 2 RPC INDICATION CALLS ALL STEAM GENERATORS 300 2% -- -- --
=------------ - - - -
O DATA AS OF 11/4 ' y 200- - - - - - - -- - - - - - - - - - k o 3g -_ -. . _ _ .m. _ . _ _ _ .. O reseee *e .eeseeeeeeee.eeemme. eeeeee. O i i i TE F* TSH TSP
A .4 _e1 - ee~ O Ch o mI
*"4 ;
d y I
?
I
**- W gg .- 0 M %V ..*. .e i i a
N st C C@v y w i m N 1 *i t i_ . p q n . i , o . u 4 ... - [g [ j
<( I f I I
r Jn . E! ! .
,l i .' .4 Ewi5 M
. . . . . i j! ! ~I i ; !
! r .
I i w!;. EI 7'
*Af o'
0 ;
!!. . . .. ;.i : -r -
^
v6 I - . , . ,,i; '*k: D c ,J:ic";'.lJ.7-i
- :i : .
..i N 1, ... ,i. , - ,-1 ,1 E Q . .
,a
- i an. i :-"
. . . i. 1 ,2 i .m ,r =,.
- :..a Ja E ! !
l wm
- y 7' i ii
. . 1 i*2 1
. .=* .1*
= -- -> - , ! .
, 1 ! ! i+ .
I i i .- .2 i ; ! .. ! !=1 uma 1 . ! ' i. 1 ' g[ r i ; si; 4
's. 6 ! >3 -n 2t . i i v r
. ~ 'm1*N a D .
R
. . . 3 mirei - 2; m.
i
' = . wwi N
a w3ii- a m,i.., , :
>=4 ,2-22 .'
h i
; i l' I t= ; i N 'e ? ! E
*I I iia 1 ;,
, ,e ' ,A .' ;,. i Mk:* =c i
1
* ! i Ni N
', ,, . i .
w . a ijwa . . 12 < N .
,I, summe .
.J .
A ; , J J h
. .m.m m
- - v; w. ; y < p==w.. - y ..
>==8 i . .
i . i [ , . r i h ! A T "'. %:
- i . i ' ' I f"E
-21 ! a VFi i e i' r ' -
i !.;* "*
- l
" 1 ' ' M'
! 4 j ! . i i m: 2 :
l
!.i . hI '
l . . . .
..--2 ,m i
' I d asa 2 ! p g A _ .' W sam I~ J I an 4 [*[2 r' mEm 1 , W '
- man
- i N ' " ' '
V M . " e e )r I W I a' ;e. 1 une ! w: >w.
\ @ . .
=i 4
i
;,2!
2=ri.
..i ,
=
. y d) 0-O!
r[- P.9 f_ it
=g .:.. it 4 <
e:.-. 4
*.=. c-i- - . i ' .=s= = . .
emmes , , ... i, _ x( _
- m 2: , .
s u. . X _ x '. i ! . . , . . y f
,, j i . .w'. - .AJ . "
_ x. . A . n __m.. .: ., , , . x =_.. ,, ,4 1I [g
.i ;.
i
;**l 2,
- I i E
1 , .- mi , , , 2: . i ,
- i '
me *
~_
f e. 4 , ..i
' = ;
i 6
* , ! ww. i; i-
*!=',
- m! _ i J'
.y.
r g g; [ p e-. - i
! l t
i i I I 2
?
. =
. .=+ .
.! i I
o g *
/.
D i! . ' i ' ' + ,, ,
... . wI i ,,,1 } i i uur '
1
. . ,i
! ' . i -
N 7 A' i . . i i , , I ! :-24 5 6
'.; , i *- .
I ! #1wa
! . 4 i; b [
! ;31 , . . m '4 ;
r . i N ( i e 1 I I i 6 i . .M
.i ,
i ( 2 g i , , , . . ! 1 M . . . , , , , t 4
. . . . .Q. . Q m
a.y' _ A .
. . .. . 4 .... ,
m-i . I kek ! I 3 i 1 . + '. ' i
- I **
. t & . .
4 t p: i , s i r ,,
==
t q w 2 ( e
, 1
! 2 ,! ,ii g 4 i i .
i 6 ww . . a < i
- i . e i
, . J g
8 8 1 1 , e u gf 2 U i i i i
, i i o w
> V O v
, 4, om s
O i i ! ! # I [~ Z A a e 1
. g s 3 OL e O
I
- i
l FMLEY UNIT 2 DETERMINArlON OF AXIAL CRACK LENGTHS SOURCE OF RPC RESULTS DATA: APPLICATION: TUBE /TUBESHEET ROLL TRANSITION METHOD: 1 ESTABLISH ROTATIONAL PITCH - USE MACH /NED NOTCHES ON CALIBRATION STANDARD 2 DRTERMINE NUMBER OF 'HlTS' (VERTICAL DEPARTURE r.3OM NULt. EXHIBITING FLA W LIKE FEA TURES. USE MOST ACCURATE OF PSEUDO ISOMETRIC RPC PLOT, EXPANDED STRIP CHARTS OR LIS-SAJOUS FIGURES) 3 Q.ALQLA.Tg AXlAL LEL2T.kl- MULTIPLYrOTATIG,:At. PITCH BY NUMBER OF " HITS". IMPLICITLY ADDS V2 PITCH TO BE9 INNING AND END OF EACHINDICATION ADDITICa .L CONSIDERATIO'N: CORRECTION FOR ELECTROMAGNETIC FIELD SPREAD OF COIL IS NOT APPLIED AT PRESENT S!NCE MORPHOLOGIES OF INDICA-TIONS ARE NOT KNOWN ACCURATELY. l
I FARLEY 2 CRACKIRNGTH STATISTICS DATA AS OF 11/5 (1500) l 70
/ 100
. . . _ .
- O
, a o /
- m so =- - AVG = 0.34 __ _1
_,, j p% STD = 0.11 ' 8 2 b
% 50 Nx O y .__
A st: 4 ra
- m A >
- y 20- -
, C S
- Ilb -
-- g
! -10 D ! O 0-' - O - 0 l O.05 0.1 0.15 O_2 0.25 03 035 OA OAS 0.5 0.55 0.6 0.65 0.7 0.75 0.8 i
- CRACK LENGTH (IN) i 1 NUMBER OFINSTANCES CUM. DIST. FUNCTION i
CRACK LENGTH MEASUREMENT UNCERTAINTY ayoy (EPRI Report NP-6864-L Draft) E39 crack engt1 measurement is t1e sum of the systematic error anc the rancom error. Systematic Error = True crac< cize - N JE crack size (True crack size mea-l sured by metallography or other acceptable method.) Rancom Error = Exaected NDE crac< size - lower bound N JE crac < size ayor = 0.12" (3.04 mm) for 7/8" tubing
t AVERAGE CRACK GROWTH RATES BASED ON KISS-ROLL DATA 3 S: 9-EPR-NP-6864L 3@ 2.5- - - - - - - - Dr8R R8 Pat - - ~ ~ -- -
~ - - - -- ConsectAlve measureinerts of anck lengths E huy em h elapswbeween v
d
""*"*'*v**"***""""" i t
rateof ancklonglhgrowth g_ ._ _ __.... .... ...... - Farley2resoas from RPCdatain 1990 cannat be compared to prior resells since tubeswith N ascksin the eroa of interest were pluggedin prior outages. O4g8.v . EPRI study prowdes an esemass of swrage [ --------- crack croath ra'** 8or various abaaaad O lengthsin 8m baseinspechon. g g Growth rateisobsenedto huwe en inverse reiwilonship to anck length. j _. ... ..- .. .- . _.... -- - -
= ::
0.5 . > > > > 1 0 2 4 6 8 10 12 e INITIAL CRACK LENGTH (mir.) ' ?
' _ _ _ __ W O i v==4 0
g W 0 I [
! . i T w e k ( ( S-C O 4 ** ** 1 i k i i i' i N b
< 'o o v o g.
e C -
- i. ,
j .j f , i , 1
, t i i g ,
e r , T i . s i i . . ! e s. sw ; - , , ,
;, n'
., i o i i . i
- 9a=4 4 g4gg
- T -
! i ' i _! I i
, $ O,,
, , i
. i . .
. 1 i I a + h 1 I i i
~ ""
I I
^
Z v ' N
-)
i i . . >
! j F C
h as, i
! i v.
, . i i 3
. , i i ,i
. i . i ei 1
n=== . i v , i i i i i!= . . Q P 3 , , i , v gpeng ,
~ w
, s i T i C ( 1 i
U
' C y
. CQ ?
O g , ,, - i i : e W k Y '8 i f i. i v e,/ A
, ! E A .
i i e i XY' - v _=- ' 1 iv ! g( " p _- w
;v
. i i
! . i ! T
> ,i _i . , o a,. ,
- 1 i r i i I .Ti... i i . . . O "-
;-r i C
i i r " ' E
.."! ', W 1
i
.m.,,, .- 0 . . . -. ? i- j - m. , ,
- O h
=; == i . ;-i i ! , . . i 2
s 6 i ! , . . . r g _ I ._ ' .
, , 6 . i ! ! . . j . ! =i i i i O b*
y -- ii i - ma i xA g - i
-- i .
i !
. 4_ i
**i r ,
i i i 1 . 1 3 J r:.,. 1( ., . . , , . i
=
c
. ., , , , . , , , , , ,i e '
, . . i-;
! .E ! t .
r ! F _ . v 6 -i . 1!
. . . i 1 t + *
' i i O
I . I i .
'i i i ii 4 . .
> i .
+
. 4 . i ,
! l ,
" O
, i i ! !T . . 3 . 3 C gemas4 X_ i i
{ } i i e i
,,, f e i
, i . . .
i ! . . i i ,
, r - ! . I C g e
.X mm i
..Ti asm t Y
i
. . i t r
i i C b, 3 imi . : _ ** C 5% ;= i . t i - P .' 1l 63 i ,m-
, . i ! . . . 3 c O P
h 1. . 'e I* 1 i ! i1 . ! , . i - i n - -
! . . 1
- I i . * ! ! i
.A" i=* ! ! i! . t i i T ! * .
l } i g }
,, ,9,,,,, T' i= *
! 1 -
'5 i m. t . -
! 1 + . ! I*i i 3 w.
Q
! ! .n. i
[
. 1
. i !
i! 1 I 4 * '
I i ! i H C V' ' ai . i i i A i . . I r . . O 4 > 1 ,
* - i ! .
. ~
i !
.,i, i . . , ,
. i ' , , , . i
. .i , ,
v . .- C o. A M - i - i i i i
! in '
i 1 . ! .
. i , .
! i i e ' .
< e, A! ., w i . [uki ! i ii3 i A
[ i ' { s i T
! . i C' i h - i . I I A e i i i iZi i '
i 1t 4f :
, i -
2l [ !
. . 6 si l
T i i ci n._e s
=
i . ,, 6 Ii
..T' p e Ol
-i 21 a
% i !- I i t 1
i s"" i C "I
! .he 3
~ *
! ! f~ A.
i. I*
- o e i ! .a me. I ann Q
>=
% i i
1 ,I I E A
.O 4
2 O
- m
) <1 : 5 co
< 'i .
r . o, < R U
- k. . .., n = 2.
, o o w Qz <k
+
C ! i ! ! n $l
.i . .
O! . N 3 O W !
, i
- i
FARLEY UNIT 2 S/G C 11/5 DATA ;
=
i i SUPPORT PLATE /AVB INDICATIONS MAP STATISTICS 4 gMMwn i -- r m, I l
. .o
" ^
gi. " i:::y . ; *
- m .'. +
40 4 , C '
= ;.
40 io2 !
- 5 :: 6 1! o, e ::
..:t, uq.
~['..
9T ..' &. - , ...._ -l _g_l is . r , , {, g a . u._. . 30 c ' i_ : '.
. .. 1;,
U "_ F; . r 6; ; ; { 1- ~ -4
-7
~_4 L-. .- ___.
30 , 8
. . ., ,l. _ _,1
.'. .s ~!
l . - 1 . ~2 , I . *
- 4
. 4 , . -
2 0- x. ; u , ,. 1 = '
~ .
i C .: i
~
20
,la.'z_nu t
r r. 3
; . i- ..
m ! _ __ .
.m ; :: '
4 -+ m,
, .. i i
l0 - e ..
.+n
^t n=. ...
,10 4
.. n i
. . ~ . . -
i ,2 i f ..
- i. .
1 1 e i 90 80 70 60 50 4-0 i j MANWAY 30 20 10 i l ' NOZZLE 1
- O 20% ..A 20% to .39 % O 40% to 100% s 0 Dis t o r t e d In dic a tio n,
~
E Support Plates E Antivibrolion 8 ors ,
- STFAM GENTRA TOR 'INFORMAlION SYSTfM (C) WT SifNCitOlsSE El f Cipto coop
- n '- a -
i ! 3
^*"~_-~~~_-_____________.-____
t Table 114 Summary of Examination Results or Farley Unit 2 SG C Tube Removal 4th R ' Field Tube / Location (Bobbin) Des'.ructive Examination Resulti , R31046 81% 00 surface intergranular axial crack. 1st Sp 83% throughwall in one cross section and 100% in another, Some secondary more . shallow cracks on 00 periphery away from primary crack. i. i 0554H0/Oca/7:5
.l
-l
i e l e i 4 i
}
}
J i , t.> t er .:. > 4 e t .: c>a+c. < - : y ei o n ca. u.
. . , : 1 I
l ! i C>p** - !
' i <
F110 6;9 am 1 k' SMN 1? ! j j frCtaf!CM = 24' OC S , i f, <
' ! l W "
.A e-l I .
-#[ Y- k , i I
l l . f 1 < l ' s t s ,
.I .
4De vCL.'1 1.' M , I . l' I-J F'.u. WT 4. 3
' j I l 2 RUtt.T!CH 23 l 9 5 1 x ECT*?l:N 76 i Iii l i
- es m is ,
Porem >4 . i 1 1 . RPC Display for Tube R31C46 Steam Generator C
l l 4
.i s .%.Q~' G'.% g ti54 I y$y ': E.i * ?p!.lu%.r.%~. I.5'.)Dh 1-
. D. E )3,*1t'.', ' :.*a &:.' ', -
s
- clC[7ws.
- -e s.. .,
8.:. b ,; :6 . . - ..
- i n . . g, .. ; == .. ,
zl ~.
- 3., 2o ., s s
.y'3. .,
. p:.:. i -. jsl.
..::Jxp,M,6.Q.-f .
. %,., c;:: . .,,.
8t
. . .y ..' s :. ,.
a pW:..y s .,' sty. . 4.i .: r . 2 .: e . :.n:I b W ' it' 312i. IE a, v. <,<.
%'M.,vs.
J a.;!. d.}
. 'y- ,.sM. .f : ..
s .... F . M,4-, ,, .
. :ajj! :
.t., I a L $ 5i
+. . . ,
.,,6 s
sfp.. .)..y"l6:cQ.DC
~ . .v .
a!T : -
; .~..,e;- .::N.9 P.+. %. t. e,..~i.>., r-i,t.. ,. h , Is..:j:: 4; O' y: ,. .s n.- , .q ad s( ? . q. ,,. w. q.
'o . .,?.y .y G'fM?C$,.b,B..?M..
.4Y.,, '.. .;%
.t
_5.'.'?
- t .A " W ';M
.,,........s G; ~. ..M; f.;f *'~~s. .
- ? g w e.e,.
1
,g I, .: I3 l f
C f
- e g 3 e.
=
. =s; . - .
. g-
- v. $.8 l' *- .2 gl
. : 5
.g 0 2
~
. I s 5 l
, ! i.it! -:181 t ks*
- e. tt(.f.sg}* : E 8!i g i I'e
,,'t k st'E 4 gee 'tl.f.st _
ljg. 1 3 8 t 3.*i. I 8:1- - M i . 3
!! !! !!!bkN{N!'IM !b:*klI'?;UN!ll iNkt! g{l 8
* l l l IB .
98 li
.! i ,.
.. il3n I, y ,
,. I i ., . ,
I E. I E. I[ og 5 e:t
.g.
l ps Es.
-li ie ! .i F -i j!-
,q, .
L_ es== ay L-
"'""'W
. ,_.--- w a, -
--, g ====
g v , g i j ! I l ! k I hl5 , - I
! ha i , I si e l t ,
, , 1 i . . .
wmans : i . i , i ,_ ai, i i i i e i ;s i 8
;8l I I J' I ,
FARLEY UNIT 2 g SUPPORT PLATE VOLTAGE DISTRIBUTIONS y 100 -
#= +======
F 90 ' O z 80 2 z 70 // . 9 60 B m__ 50 V
% 40 -
w 5 30 I~
$ 20 F /
3 10
?- 0= - $ 0 0.5. 1 1.5 2 2.5 3 3.5 4 O
SIGNAL AMPLITUDE (VOLTS)
= ALL bAiA :
CLEAR IND. ONLY l
~ FARLEY UNIT 2 S/G A SUPPORT PLATE INDICATION GROWTH RATE (Vi 8 -' -- 1
$ s- Growth between
] 4/89 and 10/90 5-e AVG = .43 4-83 E
f/ 0
-1.4
. U.
-1.2 -1.0 E.
-0.8 -0.6
-0.4
-0.2 0.0 0.2 INDICATION GROWTH
, $;!! ! j! i!iij!iii .! ; ' i.!
E _ T n A L) e0 . e9/ - P% tw0 e1 0 - T( b d 3 . RE h t n a ' _ O AT w o9 P R r/8 G4 0HT 2 P UH ' W _ S I O _ 0R _ . W 1 G A O. ' N - GR O I - /G S 0T A C 2 N . I D TIO 0 N 1 - I T - I NA ' UC
% 0
_ I 9 2 YD 0 - EN L = I G 0 R V A 3 _ A - . F T - - - 8 7 6 5 4 3 2 0 fb2m$oCW2 [LOtay2aZ c<
;' :! -! j 1 : ! :,
l FARLEY UNIT 2 GROWTH RATES FOR TSP LEVEL ODSCC 0 3 E RA" \ G CYCLE ECl GROW" 3E9 OD 1985 ~ 986 4 22 %
~ 986 ~ 987 5 7%
, " 987 ~ 989 6 5% 1989-1'd90 7 <1% l l l l l
, ,) :j: ; 1!i ,' l\\\, ;!I llilI, iii l1 l G -
C M7 S - D - O i
~- --
~ -
P
~
2S .
~
~
T
-. ~
~ 6 E
_ I
. ~
I . ~ NR
. ~ l
~
C UO Y F C Y S i
- L E
E-i U L t RI - F _
- 5 AR A F
H I . - i W .- - - O R 4 _ G 5 5 0 5 O 2 1 1 _ Ae m0 _ a ' .i ' : '. - . ;: !i i;i!: ,i t
FARLEY -2 1990 OUTAGE PROPOSED BASES FOR Tuas PLUGGING PWSCC AT ROLL TRANSITIONS t 0 LIMITED APPLICATION OF EPRI PROGRAM PLUGGING CRITERIA l - DEMONSTRATION TO DEVELOP OPERATING EXPERIENCE l WITH CRACK LENGTH BASED CRITERIA 0 PROPOSED DEMO OF EPRI #RITERIA
- LEAVE IN SERVICE A LIMITED NUMBER OF TUBES THAT MEET EPRI CRITERIA 0 50 TURES WITH SINGLE AXIAL INDICATIONS ABOVE TOP OF TUBESHEET l
0 TUBES WITH AXIAL' CRACKS CONFINED T0-WITHIN THE TUBESHEET AND ABOVE f* LENGTH ,
- CONSERVATIVELY EVALUATED ON CRITERIA '/OR CRACKS EMANATING FROM THE TUB SHEET l
l t
- , - , - ,- , -e- .- - , s_ ----.m , - -=== e - ._ee.-e+ - - - * * ' c,ewm -- * -
FARLEY -2 1990 OUTAGE PROPOSED BASES FOR TUBE PLUGGING l OD SCC AT TSPS 0 CONTINUE TO APPLY 1.75 VOLT CRITERIA F0E TUBE PLUGGING
- APPLIED FOR DI RESOLUTION IN LAST 2 OUTAGES AT FARLEY
-1 AND 2
- NO LEAKAGE ATTRIBUTABLE TO ODSCC AT TSPS FOUND AT FARLEY-1 AND 2 0 NEGLIGIBLE GROWTH RATES FOUND FOR INDICATIONS AT TSBS l O SUPPORTING DATA INDICATES 1.75 VOLTS IS A CONSERVATIVE, NO LEAKAGE CRITERIA
- PULLED TUBE, FIELD EXPERIENCE AND LABORATORY TESTS APPLIED IN EPRI PROGRAM TO DEVELOP PLUGGING -
1 i CRITERIA FoR ODSCC AT TSPS l
PLUGG1NG LIMITS FOR PWSCC IN ROLL TRANSITIONS INSPECTION REQUIREMENTS 0 100% NDE OVER ~ 2" 0F TOP OF TUBESHEET II) 0 QUALIFIED NDE TECHNIQUE FOR PWSCC IN RT NDE QUALIFIED FOR DETECTION OF PWSCC IN ROLL TRANSITIONS BY ACCEPTABLE DETECTABILITY THRESHOLD AND DEMONSTRATED CRACK LENGTH MEASUREMENT UNCERTAINTY RPC APPLIED FOR 1990 FARLEY-2 OUTAGE II) (1) REQUIREMENT CONSISTENT WITH EPRI REPORT m - -py + -y
l i PLUGGTNG LIMITS FOR PWSCC IN ROLL TRANSITION : DEFINITIONS 0 AXIAL CMACK(1) AN AXIAL CRACK NETWORK LENGTH-WITH l MAXIMUM INCLINATION FROM THE TUBE AXIS SUCH THAT THE C%i,tJUNFERENTIAL - PROJECTION IS _ ?j 0 , ROLL TRANSITION II) TUBE AXIAL REGION OVER WHICH TUBE DIAMETER CHANGES FROM--FULL EXPANSION ' IN THE TUBESHEET TO THE NOMINAL TUBE DIAMETER i 0 F* REGION I1)
- THE DISTANCE FROM THE BOTTOM OF THE ROLL TRANSITION TO THE F* LENGi1 0
CRACK LENGTH CHARACTERIZATION II) CRACKS EMANATING FROM TOP:OF TUBESHEET q CRACKS INITIATING A50VE TOP OF-TUBESHEET (1) DEFINITION CONSISTENT WITH EPRI REPORT. 4 1
,, . , , , ,m.
s PLUGGING LIMITS FOR PWSCC IN ROLL TRANSITIONS DEFINITIONS (CONT'D.) O CRACK GROWTH ALLOWANCE - ACG(l} ALLOWANCE FOR AVERAGE CRACK GROWTH BETWEEN INSPECTIONS BASED UPON GROWTH OF ' MAXIMUM TO MAXIMUM CRACK LENGTHS BETWEEN INSPECTIONS FARLEY-2 1990 OUTAGE CRACK GROWTH BASED ON EPRI REPORT NP-6864-l CRACK GROWTH AT SUBSEQUENT INSPECTIONS TO BE BASED UPON FARLEY-2 GROWTH RATES FROM 50 TUBES LEFT IN SERVICE O CRACK LENGTH HEASUREMENT UNCERTAINTY - A NDE DEMONSTRATED UNCERTAINTY ON CRACK LENGTH MEASUREMENT BY NDE INSPECTION TECHNIQUE BASED UPON QUALIFICATION OF FIELD NDE AGAINST ACTUAL CRACK LENGTHS FROM PULLED TURES 0 MAXIMUM ALLOWABLE CRACK LENGTH (1) MAXIMUM CRACK LENGTH THAT CAN BE LEFT IN SERVICE BUT SUBJECT TO CONSTRAINT THAT PREDICTED SLB LEAK RATE IS LESS THAN ACCEPTANCE LIMIT (1) DEFINITION CONSISTENT WITH EPRI REPORT. _ _ _ _ _ _ _ _ - - - - - J
l l PLUGGING LIMITS FOR PWSCC IN ROLL TR CRACK LENGTH LIMITS (1) O CRACKS EMANATING FROM TOP OF TuBESHEET MAXIMUM ALLOWABLE: A1 = 0.52" - A gg - ANDE A1 = 0.35" O INCLUDES TUBESHEET CONSTRAINT EFFECT ON ALLOWABLE LENGTH 0 AXIAL CRACKS INITIATING ABOVE TOP OF TUBESHEET MAXIMDM ALLOWABLE: Ag = 0.35" - A Ag = 0.20" CG ~ ^NDE O DOES PCT INCLUDE TUBESHEET CONSTRAINT AFFECT ON ALLOWABLE LENGTH 0 CRACKS WITHIN F* REGION
-. CONSERVATIVELY GROUPED WITH AXIAL C EMANATING FROM TOP OF TUBESHEET l
(1) I DEFINITION CONSISTENT WITH EPRI REPORT. i
)
PLUGGING LIMITS FOR PWSCC IN ROLL TRANSITIONS SLB LEAK RATE EVALUATION REQUIREMENTS 0 THE PREDICTED SLB LEAK RATE BASED ON THE DISTRIBUTION OF CRACK LENGTHS LEFT IN SERVICE AFTER EACH INSPECTION SHALL NOT EXCEED 40 GPM PeR S/G 0 CRACK LENGTHS FOR LEAKAGE CALCULATION A
=AM + ^CG + ^NDE A = MEASURED CRACK LENGTH M
0 METHOD FOR LEAK RATE ANALYSIS THE METHOD USED TO CALCULATE LEAK RATES SHALL BE DEMONSTRATED TO BE APPROXIMATELY A PLUS 2-SIGMA CONFIDENCE LEVEL RELATIVE To LEAK RATE MEASUREMENTS ON PULLED TUBE ROLL TRANSITION CRACKS AND LABORATORY INDUCED AXIAL CRACKS , N
-__ _ j}}