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TDR NO.
388 REVISION NO.
3 BUDGET TECHNICAL DATA REPORT ACTIVrrY NO. 120012 PAGE 1
OF 25 DEPARTMENT /SECTION Eng'g & Des./Eng'g Mechanics IMI-1 OTSG RELEASE DATE REVISION DATE D CUMENT TITLE: Hechanical Integrity Analysis of TMI-1 OTSG Unplugged Tubes ORCINATOR SIGNATURE DATE APPROVAL (S) SIGNATURE DATE A /
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APPRJpVA/. FOR EXJ(RhhtdTRIBUTION DATE
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DISTRIBUTION AssTRA PURPOS D
def,ts have been identified in R. O. Barley.
- Sm
. circumferenti t
P. R. Clark ma!
m generator tub A Yracture mechanics evaluation st
- n the stability of tube cracks D. K. Croneberger
$a conducted to f
F. S. Giacobbe der ster.dy-state an tdipatedtransientconditions.
M. J. Graham ek opening disp lit menp (COD) for thr ugh wall cracks H. Hukill also identifi Sa permits the ca e lation of leakage J. Moore rates.
J. Sipp D. G. Slear RESULTSt J. Tangen ave escaped y ECT vill not C. VonNieda Cracks t
P. S. Walsh jeopar (
ube integrity durih go 1 cooldown unless are greater t R BD Qin extent. Large non-J. Wetmore thes ra R. F. Wilson t
cracks that E
eepardize tube integrity pected to evol ec se in axi-symmetric tensile ar n (t
ields cracks prop ga_e preferentially through the to e vall rather than around the circumference.
Tube i'nte rity can be demonstrated for mid-span tube regions j
and for the transition region as well.
j The as-repaired transition geometry is a design no less adequate than the original.
% e as-repaired condition represents an improvement in che state of stress due to mechanical and thermal loads as compared to the original.
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Page 2 of 25~
TABLE OF CONTENTS Page
~
1 Abstract
- 1.0 Results 2.0 Bases and Methods 3
2.1.1
. Mechanical Integrity Evaluation 4
2.1.2 Axial Membrane Loads 7
2.1.3 Bending Loads (FIV) 2.1.4 Crack Propagation eture Mechanics V
7 2.1'.4.1 5treas'Intens 2.1.4.2 Threshold tensity 9
2.2 m Leakage c>
11 2.2.1 Creek opening Displacement (
12 2.2.2 Leak Rate Calculation an
-repaired Tr i
2.3 Comparison of As-b '
13 Region Geometrie 2.4 Residual Stre Ca ed by Formatio f
18 Transition
'2. 5 Main Steam Li reak (MSLB) 19 24 2.6 Net Section Collapse 25 3.0 References W
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T-
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s SPECIFICATION NO.
[
}j ggg TDR No. 388 TITLE Mechanical Integrity Analysis of THI-1 OTSG Unplugged Tubes REV
SUMMARY
OF CHANGE APPROVAL DATE
' O-1 This revision incorporates many additional analyses performed since the release of Rev. 0 2[ g/n L[f[
2 Reworded statement of results on abstract page.
s 3
Abstract p ie; Section 2.3 completely rewritte
, %Q r[,./n New Section 2.4 added.
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TDR No. 388 Rev. 1 Page 3 of 25 to RESULTS With reference to Figure 1, line segment @ for a (AK)g = 4.0 KSI M.
40 years of stable crack growth can be anticipated. Only heat-up and shut-down cycles propagate cracks. Line segment @ represents eus ube in of initial crack sizes that will propagate through the wall tube will a stable manner. Leakage occurs at 100% through-wall ex not part into two pieces unles he postulated MSLB den. ntercedes, line segment $ or, if the ery large, co down ads to ductile apply to tubes I t e center of the failure, @. Curves at point fl. Th s int represents the tube bundle. Leaks o
he tube in two during a HSLB through-wall crack ch will potential p
n the interest conser-Statements concerning tube rupture a vatism. Rupture is not likely n strain contr led p lems. This is the manner of OTSC loadin Leakage as a function f circumferenti len is shown in Figure 2.
b Leakage will not be a because parted faces o rough wall cracks do not Cracks will propa-fully close becaune of plastic strain at the crack tip.
r gate circumferentially as indicated in Figure 1 by increasing are length at l
l Atpoint#2,withintersectionoflinesegment@
100% through wall extent.
f tube integrity is jeopardized by an interceding 100*T/hr shutdown cycle.
10 Bases and Methods
- f. i (
Hechanical Integrity Evaluation Tube mechanical integrity is evaluated by conservatively establishing the sechanical and thermal loads acting on the OTSO tubes during anticipated l
l 4
0 D. MAX ARC-LENGTH 2.00 M
NET SECTION
\\
'g COLLAPSE LINE *1 g
g (1107 lbs)
.\\
MSLB *\\
1.75 2
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.50 l
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CRACK AKth=4.0 GROWTH a
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.s TDR No. 388 Rev. 1 Page 4 of 2c transient.and ste'dy-state conditions. Possible in-dwelling cracks are interacted with the stress fields due to these loads by means of fracture.
mechanics to determine the impact that the propagation of these cracks has l.
on the structural integrity of the tubes.
f OTSG Tube Loads LI.t Axial Menbrane Loads The maximum possible tube to differential er G expansion of e
, and the effect e pretension is 585#
shel1~and tube, pressur e e i*m\\ of 195# can be expected a, and Ib). A u
for peripheral tube s
~
for core tubes.
al' to the developme n analytical model used to i
ambient tubesh t deflection establish these values was that een predicted was identical.to that rt by B&W. This con Q was met. A y
parted tube of TMI-1, B 22-30, s ow a spring back imately s
that the tube 0.090".
This indicates a ub pre-load of 290#,
a duction due t e i un contact pressure.
f doesn't " hang up" aft The analytical mod re4 ts a tube preload
- for a peripheral tube and 460# for a tube at he unit center-line. One measurement for a peripheral tube does n'ot prove or disprove the analytical model.
The
[
spring-beck distance will be remeasured in order to establish the validity of the analytical model.
i-Certain 'other facts are necessary to establish the tube operatng load.
EPRI, NP-2146,' Static Strain Cauge Measurements for TM1-2 OTSG Tubes
~
i for plant heat-up to 530*T a compressive load of 265#,
i Re f. 2), shows th at as a average, will develop. The strain gauges do not reflect preload since g.
TDR No. 388 Rev. 1
~
Page 5 of 25 they were attached after generator fabrication. Additional compression can be expected in going to 0% power conditions. The increase is small and can be shown in NW calculations (Ref. 3). Both the strain gauge measurement -
and the M W calculation include pressure effects, such as Poisson's contrac-tion of the tube, shell elongation due to' secondary side pressurt "on, and g
shell-to-tube temperature differences. Each neglects prelo i _h An additional experimental data point comes from EPRI NRI
, Vibration b ncy of peripheral Analysis of TMI-2 OTSG Tube 4). The natural r lane tubes increased 16 f
0-97% power.
a clear trend. Tube er se as increasin ia load is applied. The natural frequency will trend correlates V ial load changes o p ro teately 400# in the direc-I-
tion of increasing tension. This tr an error band s
isted in the
__y manner of tube end fixity. A tug t
z could be in axtai g nsion of 400d.
=
=
I b
see compressive loads The' strain gauge data r.g.sen s he fact that ue re rly the same as a
%4ower. The trend is clear during heat-up whic that increasing power b ngs with it significant tension loads. Using the y
a i
factual strain gauge data for heat-up and the preload calculation the repre-a sentative tube load during operation can be identified:
i
=
5 850
- Calci, for tube pre-load, max.
460*Cale. from pre-lod, min.
v*
9 4
-265 Heasured,.from heat-up
-265 585 # ' Max.
195 Min.
I
^
t S
2
TDR No. 388 Rsv. 1 Page.6 of 25 ne additional compresion' at 0% power and the trend to increasing tension at higher power are taken as approximately compensating trends, while the bias is toward tension.
In addition, a first principle evaluation (CPUN Calc., Ref. 5) e blishes a o
ion load of 480-507f tension for peripheral tubes during full powe and 200f tension for core tubes. h is analysis takes int ec u t pressure
~
r e tubesheet, affects, rhell-to-tube temperatures differences, fle a
of tube B-22-30.
and preload of 290f taken f measured spring n e mechanical analysis of integrity which f cvs uses as a conservative upper bo do 00f as the tub ^exia loading during steady state operation.
m Tube axial loads for an anticipated
/hr cooldown an gheHSLBare s
ument (Ref. Sa).
es loads are 1107f taken from a generic design ba tension for the l'00*F/hr e nd 3140f for th 5
An accurate m'odel o t oad cycle (see Fi
)
st reflect the mean load, An axial on which the flow in aq,ed vibration (FIV) load is superimposed.
tension of 500f was chosen as a reasonable and conservative approximation.
.- As the axial load is increased In fracture mechanics R = Kg /K the R value approaches 1.0.
From Fig 4. Ref. 6, at R=1.0, crack growth rate," da/dN, is greater and the (AK)g is lower than for R=0.0.
A higher i
On the other hand, R value yields more conservative mechanical analysis.
use of very large axial load will introduce error ir. leakage based on crack opening displacecent (COD) which is a function of axial load.
w
~o OTSG Loading Cycle for Tube Mechanical Evaluation
-1100 FIV - 2.4 X 10s CYCLES /YR.
HEATUP
[
s
\\
C00LDOWN g
p g
g m
f s
100* TS LIMIT 500 g,
NORMAL DPS
,/'N
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H 100
,/
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i 01 A
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x I M E -+-
L e FIV ALTERNATING LDAD, REGION I ~ c 550 ?:11,.003" M AX. DISP.
l e HEATUP/C00LOOWN,6 CYCLES /YR.
e 40 YEAR LIFE l
e MAXIMUM AMPLITUDES l
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a-TDR No. 388 Rev. 1
]
Page 7 of 25 fL/.3 Bending Loads (FIV)
~
The OTSC, while a counter current heat exchanger, has several regions of cross-flow. The most significant of these is the tube span between the 15th lateral support plate and the upper tubesheet. At this re '
uper-heated steam turns into the steam dome annulus prior to exi
- he main-steam nozzle.
vide spectrum of ex
- tion frequency..
Turbulent wake shedding pr e
es.
The tubes select Lateral deflection is d t rather than dr gCf their natural frequ n
- a the spectrum f ci ation.
~ NP-1876 provides measured' tube deflec ign,p THI-2 (Ref. 4)
'g. 5.
At 97%
e.
full power,1 mil (RNS) was measuftd is corresponds to,
s peak displacement. Using Fig. S./ i o def. 4, the be ss can be estimated to be + 540 psi.
f./.4 Crack Propagation b a
re Mechanics
- t. t. 4. t Stress Intensity It is an Stress intensity is used when evaluating stable crack growth.
analytical convenience, a parameter. The severity of the crack is measured in terms of' stress intensity, in the following form (Ref. 7):
K=TQ where K = stress intensity, KSI Eq. 1 C' = stress, KSI Q = shape factor i
a = crack depth, in.
4,m'4
- N*m--,Ty--ir---s 6-7 ws e-e+=rg
- e'-w
-w' A
r-Nm,rw--Tsa-=vve-r-----ww-W-qqu y
w-p
-w-w-9--
-mwereeMw--ew'er-w'?gyerg--w
-g--neM'y
'y
-W=
=wwF v,9wwrey=wvypg--=
j 1
f,.-
)
F l
i TMI-2 FIV INSTRUMENTATION RES'ULTS - STEADY '
STATE TANGENTIAL DISPLACEMENT 1.1 1.0 f
57% PO s e.
i e
j O.7
( n.s n
75% POWER lj g.5 U. 8.4 g
- M E.O.3 n
O.2 40% POWER I
NN h
{ 45
- 3 a 80 OTSG 15 30 h
a 50 35 30.
1g 41 LANE TUBE LOC T10 N HES (ARROWS SHO A. TUBE LOCAT10NS')
o STEADY STATE DEFLECTION FOR FRACTURE MECHANICS ANALYSIS = 3'x MAX RMS VALUE = 3 MILS.
o ONE CAN SAY WITH A CONFIDENCE LEVEL OF 98% THAT FOR A GAUSSIAN DISTRIBUTION THE
~~
MAXIMUM AMPLITUDE WILL NOT EXCEED'THREE TIMES THE RMS.
~
FIG. G e
7 QS
?. t 9 D.x.c. \\
_.__m.
m.
.- I TDR Ns. 388 Rev. 1 Page 8 of 25 j
1
- Stress intensity reflects the state of stress at the flaw, the flaw size, and the relationship of the flaw to the boundaries of the body.
Stable crack growth can be described by the following equation:
da/dN = C GLK)4 where da/dN, crack. extension, in/ cycle C, a material property JbK, stress intensity ra l
p., a material pro 27
- l Crack growth can be c y integrating th ess intensity range over the number of o es. The EPRI li e elastic fracture mechanics ode 'BICIF' (Re performs this tas.
-The stress intensities used her are express 1 for I cracks in ntensity i
tubes. No approximate solut*
involved The e
solution admits of the c
'n d loading from four po'nents: axial
~
membrane load, bendin ~Te pressure loads, nd e internal pressure actingontheparti(gfc of the crack.
Table 1 identifies the final stress intensities used. The results of this evaluation 'for GkK)Th = 4.0 is shown in Fig. 1, line segment QD (Ref. 9).
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e
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8P*--
,.-p.s.-
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__m.-.,.-,.,,,_..3,
.pwy.,
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TDR No. 388 Rsv. 1 Page 9 of 25 1.f. 4.. e Threshold Stress Intensity, (AK)Th There is a point at which small in-dwelling cracks have no effect on fatigue resistance (the endurance limit). The value of the stress intensity below which cracks do not propagate is the stress intensity threshol ure 6 establishes this threshold for INCO 600. Data from two inv s is plotte'd in the figure showing a common trend and identifi ee' pointing away from linearity. The intercept at the is s the threshold ack propagation.
for propagation. To the 1 is value there i n while to the right ther o agation. A valu %
K)Th =4.0KSI[is conservatively tak n An ef fective (&K)Th used to link O ondition under whi the y.
threshold is identified experime tu ly the R ratio under a ied loads, in the following manner:
ef f. (&K)Th " ^ - -
% >Th (Ref A
R,, rat'o t which (AK)g is defined, usually R,= 0.05 R, rati,o under applied loading A, constant for titanium or steel, = 1.41 Applicable to nickel alloys, by inspection O
e 9
"m
a-e da/dn vs Ak for INCO 600 10-4 A 75' JOURNAL OF ENGINEERING MATERIALS CURVE O 600* JOURNAL OF ENGINEERING MATERIALS CURVE O 77' MIT CURVE 0 554' NilT CURVE 10-5 0
l O
2 u
.e 6,.
- =
R E
k 10-6 4
1 1
A 608' POINT BORATED WATER k--
10-7
' ' ' 'd '0 1
!1 100 x
AK Ksid F/G.6
-%e M ':
Qw i
\\..
TDR Ns. 388 Rev. 1 Page 10 of 25 Table 1 The stress intensity factor ratio K /6 in the tube containing an inner 1 m circumferential semi-elliptic crack, and subjected to a uniform axial membrane stress 6, OD = 0.625 in. h = 0.034 in.
- s m
w r
1,o/h a/h 0.1 0.2 0.3 0.4 0.5 0.6 0.8 0.9 1.0 0.115 0.161 0.1 0.215 0.231 0.
O.
9-0.255 0.293 2.0 0.118 0.173 0
258 0.290 19
.336 0.354 0.428 D
3.0 0.119 0.177 0
0.279 0.323 63 0.392 0.421 0.526 4.0 0.119 0.
0 6
0.291 0 34
.393 0.433 0.473 0.608 5.0 0.119 0.240 0.29 0.414 0.463 0.514 0.678 6.0 0.119 0.182 0.243 0.3 7
0.430 04 0.548 0.740 7.0 0.120 0.182 0.244
.374 0.443 0.507 0.577 0.794 8.0 0.120 0.182 0.2 0.380 0.4 0x523 0.602 0.842 9
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TDR No. 388 R2v. 1 Page 11 of 25
%.I.
Leakage-El1
.E.9?
Crack opening displacement increases linearly at first, up to where the membrane stress is about 22.5% 'of the flow stress, then non-linearly until becoming asymptotic at 40 to 60 percent of flow stress dependi ack circumferential extent (Fig. 7. from Ref. 8).
In the neighborhood of a certain value of f,, a smal e in F,
causes a large increase in ysically this can b terpreted as the onset of ductile fractu s
ility. nis pro self-limiting because'real world o i
put grips on t b en that form restoring bending monument in the following fi is. 8.
hM y-
~_
\\.
- %y,.
~.
j L.. T Wso#K78 C4 l-
- 8Mfat i
. G R.It EMD Cc6L8meiM.E
. MD MCNTS 1D WC3RI*4(e TEN 3 s oA4 Ar cA4 cJe FTP, F/G. K R.'
y=.
1 7..
.7 TDR No. 338 Rsv. 1 Page 12 of 25 An axial load will move the cracked tube laterally to line up the ' centroids of the unaffected and cracked cross-sections. n is tendency is limited by the end conditions of the tube. COD is reduced and section ultimate strength is increased. - Fig. 8 shows this increase in section ultimate strength per grip end conditions (Ref.10). Very large C0D oc a
higher C,.
Lt.f Le'ak Rate Calculation n e N3AC/EPRI analysis Ref s that a phase e an ecurs for leakage through the crack, n I analytical met o7
- supported by matching
' experimental data t k atte11e (Ref. 8)
P Pressure drop is due o 1)
Entra'nce affects:
fo 1
jet in vena contract 2)
Acceleration of fluid vaporization
- th ack:
decreased density forces ve y to increase withz s y flow conditions.
3)
Acceleration d due to area e nge decreased throat area at crack exit ces velocity to increase within steady flow conditions..
4)
Friction:
surface roughness may be 25% of the throat dimension.
7 L
Leak rate is shown as a function of crack are length in Fig. 2, Ref.11.
D e axial loads acting on the crack are 500f during steady-state operation and 1107'i during an anticipated 100*F/hr cooldown.
r
4G COD]d h
ap (1+g) 30 -
G = E/2 (l+y)
K = ( 3-y)/ ( l+v) 77=7 c/h =
20 -
f Exp.
The I
~,
1 IO -
1
~
To/Jr i
l t
t t
l t
t I
r o
o.2 -
o.4 Figure 5.
Nonnalized CDD vs. stress ratio e
,2 te. t C
W 9 EO. 368 Ev. 3 PAGE 13 of 25
+.
~ 2.3 Comparison of As-built and As-rspaired Trrnsition Region C*om7tries.
The object of this evaluation is to compare the as-built and as-repaired transition geometries in order to determine if the repair represents a design no less adequate than the original, and Soreover, that the as-repaired transition represents an improvement in the state of stress as compared te the original.
With the assistance of Prof. A.-Kalnins, Professor of Mechanics, Dept.
of Mechanical Engineering and Mechanics, Lehigh University, a detailed stress' analysis of the transition region has been performed for both the as-built and as-repaired geometries. The computer code "K
",a general purpose structural analysis program for shells o ion developed by Prof. Kalnins, was.used to perform the eva Model
& c, for The model of the transition zone is shown in Fi r three load cases. Results are linearly superi sablVsince stresses are first order with 1 The model captur transition geometry' as identified in Top rt 007 Figure 2,
f.12 ), for the 30 bevel on the plastic for the as-rep ondition. Upper and lower boundary c are the same for ad cases. The upper boundary condition permit tical reaction h.1 ral freedom. The lower i
boundary condf i e to analytica place the lower section of tube'that was cut awa /.
e tion can move y freely but no slope change can expected for free span regions of take place, s type of behavio e long, flexib1 bes. A vertic ac on is also'pe tted at the lower end.
One additional boundary conditi nds application
" ring-spring" shown
" ffers radial-istan. while permitting in Figure 9,b.
The " ring-sp structural rotation at t poi of contact with e.
The " ring-spring" boundary condition was when conside n cific loading condition, the pressure differe p,
cross the tub
- 1. 'Bere a unique structural response was antici It was recognized he tube wall might lift off a
tion of the Ap.
"KSHELL" the tubesheet (mov ly inward) und output identifi at his motion occu
(
cussed below).
Load Cases Three load. cases were considered: 1) contact pressure 2) A P, and 3) axial load. Contact pressure is the compressive radial pressure exerted by 'the tubesheet on the tube as a result of plastic deformation of the tube and elastic rebound of the tubesheet to capture the tube as a result of the f abrication process, be it mechanical or kinetic (Figure 9 a).
The contact pressure for the as-built condition is 3350 psi as per TR007 (Ref.12 ), and I
that fer the as-repaired condition is 1123 psi, by virtue of a 6" contact length for the latter and a 1" contact length for the former.
D D
I
TDR No. 388 R2v. 3 Pcg2 14 cf 25 i
1 i
)
The Ap load case.(Figure 9b) treats the pressure gradient as applicable only away from the contact length. No pressure gradient exists across the wall where the tubesheet is in contact with the wall. During operation a 1300 psi pressure drop acts across 0
the wall while during 100 F/hr cooldown there is no primary-to-secondary pressure difference. The MSLB 6p is 2500 psi.
The axial load case treats tube axial load as evenly distributed'on the circumference of the cut lower section. The normal steady-i state operating load is 500#, that for the 100 F/h oldown is i
1107#, and that for the MSLB is 3140#,
Transition Stresses and Structural Response "KSHELL" shows significant advantage of t ired transition over the as-built transition in terms of s during a MSLB will all factors considered, Table 2 ngi inal bending and.
membrane stres re shown, with str uponents identified in Figure 10 cation of maximum tehe.on at the ID is in the upper o the transitio re where the radius of curvature e ds to the contact 1 n
, shown at cut A-A, Figure 9
, as-repaired, appears when The i
f the 6" cont n
co stresses with the tact length, as-built. The Further b nefit is gleaned stres are reduced by th s.
A on which substa'niially reduces
--- f rom th longer trans e
oad is applied. 4HB'rd
~-
abare reduced fr m 628)q MSLB maximum bending stress when axi (
Upsi to 50742 psi.
stresses due to ax The as-repaired t on is 0.5 in. lo (, as iven in Ref. 12, Fig. 2-12.
Th a transition 1 06
- n. long. The total 1
stress, from f
rs, is reduce om 91209 to 73712, in j
the as-repai ondition. During 1 cooldown, the maximum l
ess than the code stress for t repaired trans i
allowab BPVC, Sect 11, Ap dices, 1980).
The s u
response mentione ove (under Model), namely that the tube fts off the contact zone due to the p in the neighborhood of the highest stressed region can be seen in the i
"KSHELL" output. The inward displacement is about 0.1 mil.
The use of the " ring-spring" boundary condition in "KSHELL" permitted this response.
\\
i
/
e Lk gw
EV. ' 3 PAGI 15 or 25'
' sokTACT 7'A L SS UM umr t oe s
^
klDAR 1 lRJf%.$
=
.__D
. e.w
~.
=2
/
k
.%? !*- %
' I
.g
. c.
r l
4 x
L t ww te, wc. c. f Ca) y
- smi newt-;.
.../.,
i 1
1 I
A N
l
==.q i
t
=.
. 4.4 (b
Axl A L LC4O
. ?.\\.
y.m' e
S s
l h
I
- r. A A.
J ris'.. 9,.n.:,:
gy
+
Y
mLG DV~~8-b
'~:
P.~:V. 3 PAGE 16 or 25 I
bl
\\
n s'
E MPHI'EFm 8
\\ Mminiou4c Ax,.s y
s m
D Lonservom 70 A s.l.s,
g Fi c..
btSPLAC b.Lc A DIN to CNVELD
!~'~
e O
v
~
O s
0
)
~
m
r.
i TABLE 2
- ~
LOAD CASE
.AS-BUILT AS-REPAIRED COMMENTS
' G,wt
( A.
E( g iA 4
- 1) Contact Pressure
+8586
-8586
+2865
-2865 Aa-repaired joint has 6" contact length as opposed to 1" for as-built.
- 2) Ap
+19792 -19060
+20105 -19372 3)
Axial Load I
n) Unit Load,
+20010 +111 0 Ii
+16160 +14990 6 = 19840; significant bending occurs in
-built condition 1000*
j b) MSLB,
+62831 34979 50 47069 9
. 49738; pronounced bending occurs in j
s-built condition 3140 a 9 ;,
9, < as-built 4
Suinmation 91209 7333 73712 2
As-repaired 9
for as repaired < f
= 75500 pp 100"F/hr Cooldown P
- 1) contnet Press.
+8586
-8586
+: 8
-2865 load case should not include Ap term.
ti
- 2) &p I j
3)
Axini Load 22151 12332 17 1 i
'3 950 psi P 4.67S g Pb+Pf l
Summation 100 F/hr.
30737 3746 20754 3729
=
g g
i1 i
cooldown
\\
l W l'l El P.i. "
H M "' 5 b,
E 3
o
, _ ~ ;.
h.
E TDR No. 388 Rsv. 3 PAGI; 18 or 25' I2.4-Residual Stresses Caused by Formation of the Transition Zone.
- Tube expansion causes residual meridional bending stresses.
It can be shown.(below) that compressive stresses pertain at the center-line.
This is advantageous because compressive stresses arrest cracks.
Consider the following bending stress distribution achieved at the end of the expansion process Fig. 11.
7 g_
)
+
A*
-l 4
2 b
(+).
I i
f TM ll f
te.)
r 4
<s Q
3 s.
- +
/,-\\
y-
.o Av
.rld. If n,
r
~
When the, applied. load is remo), for either the or as-repaired condition, plane sectio r
in plane.
appli moment ~is equal to the unloading The stress di
, after unloading, will be linear (Figu
, n). The su o
on of the two stress distributions, rectg y ar ile loading a is lar while unloading (shaded area), represe s the stresses whi n in the tube after ium, after uni he sum of moments on the section sh(1 unloading. From e
&ded areas (Figu 12 rovide that equilibrium and are must be zero, the res'idual t s.
.i Tibers at the n ral axis will have a residual stress equal to yield C
- while the outermost, fibers will have a residual stress equal to yp. This development.is substantiated by evaluation of unloaded curvature as described-in Timoshenko, Vol. II (Ref.13).
These residual stresses are consistent with x-ray defraction measurements (TR007,Ref. 12).
The presence of the residual stresses does not jeapordize the region during a MSLB. Application of~a membrane stress at the near yield stress, as from
- the MSLB load, would not result in the entire section having a residual stress
-equal to yield. This conclusion is evident by linear superposition of stresses
. within the condition that the material is approximately elastic-perfectly plastic when. loaded.
Compression at aid wall is advantageous because it is a crack arrest condition-with respect to radial propagation.
Circumferential propagation could occur without radial propagation but at a very slow rate.
r-
___We
~r=
e
l PIV. 3 3
PAGI 19 or 25
{
h'h/.....
- *-. 77.,.., <
(
r
/' s b
~d s.)
+
p L'
W N,,
FN. 13 This_can be qualitatively demonstrated in the foll y.
Figure 13a, depicts a part through-wall crack arrested rd compression.
Circumferential propagation occurs as the era tangent to the compressive field; down tension is th cis ng force. The alternating throug esses are as a of residual stresses e
from transition fa
, as repaired s-b t.
V The. severity o:
is a function of.t length of the propagating edge,-
as tion the circumferential among other thi or tangential r
extent of.
is no longer IE>T te.
The depth b' is the propagati e.
Since the comp saivA field will occur before mid wall h' will be ificantly less circumferential extent, 2a (Fig.
13 a_& b).
agnifying eff r M tress intensity the decreasing ligament size remaining befo Irack goes throes all. This magnifying y
effect does not occur for e
rential propagat o.
Relative shallowness,^s (1' dimension, re
't stancy of stress intensity, because t ou 411 dimension w t nerease, are factors which mitigate cir ential greoth rat 2.5 MSLB The followi n
is is based on wo formed by MPR associates
~
(Ref. 14).
Free Span A flawed section will move laterally under an axial load in order that the c.g.'s of all sections line up to reduce the induced bending moment generated at the flaw.
9 6
TDR No. 388 Rev. I Page 20 of 25 induced f _-
'Y F
reaction, flawed sectio applied Mbduced =F(e-$)"
e = eccentricity i
(ref. 14)
S
= deflectio e'd section Several spans away, this reacted by co les eated at the lateral -
support plates. Unife characterizes e re.
l k
/ *. b A
p,--
w l4* L 3P IS et permit e = &.
The restoring moment and ing tube stiffener s Eence the tube loo 4
/
8 = [.133 in/23 in] radians
,f G =.00578 radians j
f=20=.01156 radians e,
Q 0.IW a
7
- ~, - _. _,
' TDR No. 388
' ;['f 2 *1,*.
K2v. 1 Page 21 of 25'
\\
For fixed / fixed conditions, half the tube is treated separately. ' Uniform i
bending pertains to this length.
Therefore, from beam theory.
2d 2 = n_
2 EI
'h Since the M is constant along the span, g2
' g = S = -- g 2
~ and y
=
da El
- 2EI
[. g2 Thus 2EI p
q
. and'
=F(e*$
l' Solving-gives
=
(3130 lb)(23 in A 13 in) lb)(23 in) 2 (2)(30.1x10 8 283 in')
2N.1x10 lb )(.00283 in )
6 ik y..
s p
6 O
o o
k y
+e.,--n-
I TDR No. 388 R2v. 1 Page 22 of 25 i
i h = 0.1206 in Thus M = F (e-$ ) = (3130 lb)(.133
.1206) = 38.8 in-lb.
d2 = !O.,,
(38.8 in-1b.)(23 in.)
2
.010 t n
=
EI 6
(.00283 in')
(30.1x10 lb 2 in p = 2(.0105) radian
=.021 radian (1.2032')
9 r
.I-1, containi a2 area flaw,. exhibited a l
Tube specimen A-13-63 1.5' rotation whe ke failure (Ref is is the limiting condition.
<j It will be assumed that the st n the plastic hin e location of
'the crack is absorbed over ver ort length, 0 c
Hence the stra'in is i
(Hin'ge Rotation) (Dist from Feutral Axis to Extr. Fiber) dF =
Axial Crowth
=
.1
.1 e
e 6
- s s a
kM%
(,
TDR No. 388 Rsv. 1 i
f Page 23 of 25 n e distance from the neutral axis to the extreme fiber at the cracked section'is-a N.A.
YA = 1/2 Da sin 25'
~
s-
_.O I,
8-
,\\
= -1/2 (.625 in.)(.423) =.132 in.
Ya = 1/2 (.625 in.) =.3125 in.
YB - neut axis =.3125
.133 = 0.1795 in.
Yneut axis - A =.133 - (.132) = 0.265 in.
Hence use 0.265 in.
(.021 radians)(0
= 0.0557 = 5.
=
U.
%ea 5.57% bending in is added to 7 v erain from the membrane load,
-the total strain is-12.6%. This cor pon s to a stress af-8 KSI. This is r.-
a stress increase above flow s s o i
85-75.5
=
0.
.6%
75.5 n erefore, in order o exceed the flow stress, the intact area require-ment is increased by 12.6%. The intact area required becomes 72% of the total, ne defect size is.52".
e a
.n-+
n
..,,.,--,,,,,-,----r,-.
,,-,~w.,n.-,e---,,--,,-r,,--w-e.e,--en
,,~-,,,.-e
1
,1 TDR Ns. 388 Rsv. 1 Page 24 of 25 l
Results are shown in Figure 1 for a peripheral tube (3140#) and for a core tube at the centerline (14084).
1.5 Net Section Collapse Net section collapse has as its failure criteria the formation o a hinge at th flawed elevation when flav stress, C' ( fj = Cgy) is reach th in tension and compression.
2.
It is arrived at (Ref.16) very conservatively. tJnlike t for MSLB, previously discussed, no account is made of the fact that se on moves
^'
- Results laterally at the flaw. The section bending moment is x
are shown in Fig.1 for the 100*F/hr normal cooldown d
0,*F/hr adminis-trativelylimitedcooldown.g t
l
.--.-,-.-,--.,.,,.-.----.-----w--m,,..v
- - - -, - ~ -
e
TDR No. 388 f,' .
R:v.-3 Pega 25 of 25
'f
3.0 REFERENCES
1 la.
Letter from D.'A.'Steininger.to D.-K. Croneberger, Operating Axial Tube Stress in OTSG's, 2/11/83.-
lb. Failure Analysis Associates An Engineering and Probabilistic Analysis of Tube Cracking Performance.in OTSG's, Vol.1, EPRI Research Project 5151-1, Final Report, 12/82.
2.
EPRI-NP-2146, Static Strain Analysis of THI-2 OTSG Tubes, December,
~
1981.
3..
B&W, IOM, Saville, T. A.,
to Baker, R.
J.,
Operational on ern - OTSG Tube Leaks,' 1/18/83.
4..
.EPRI-NP-1876, Floh Induced Vibration Analysis of TM 0
Tubes, June 1981.
5.
-GPUN. EM Calc. No. 1101 - 5320 - A'49A & A49B S.
Leshnoff (A) &
C. L. Lehmann-(B).
Sa. 'BAW-10146, Dete' f Minimum Requi Wall Thickness for 177-FA OTSG, 10 a
.6.
EPRI-NP-838 IT-Practure se Code for Structures.
7.
Harvey, J.
essure Componen n
etion, Van' Nostrand Reinhold, 1980,.p. 298.
8.
F. Erdogan, Fraction Analy o
eam Generator T rt II, Stress Intensity Factor and COD t
t ons, Prepared GPU uclear Corp.,
Parsippany, NJ.
9.
Babcock & Wilcox Cal
-114050-1-00.
- 10.~
F. Erdogan, The 1
Experimental ud o racture in August, 1982, Pipelines ng Circumferen alF3vs,FinalReport,U.S.~
Department of an g rtation, Research pecial Programs Administra-tion, Washingt
. D.T. 20590.
11.
Letter from T. J. Griesbach to S. D. Leshnoff, Calculation of Leak Ra'tes from Circurferential Cracks in OTSG Tubes, 3/4/83.
12..
GPUN Topical Report-007, Babcock & Wilcox - 1760, Rev. 1, TMI-l OTSG Repair, Kinetic Expansion Technical Report, March, 1983.
'13.-
Timoshenko, S.. P., Strength of Materials, Vol. II, p. 377, Van Nostrand, Third Edition.
14.-
MPR Associates Report, TMI-1 Tube, Cracking Versus Design Basis Steam Line Break Load, 12/8/82.
15.
Letter from S. J. Weems, N R_ Assoc., to S. D. Leshnoff, 3/2/83.
16.
TDR 388, Rev. O, Mechanical Integrity Analysis of TMI-1 OTSG Tubes.
GD GP ra10H1TT ATTshT10N.RdyUIRhD MokNING MEF0kT - wag 10N 1 PR10317Y ATTENTION RhQUIREE bs S
5-13-e3 eg e N
To: J ames 814 ba, Chie f, Prog r am S uppo r t D ranc h, 1E GD FH Cn : James n. 4114, segLon 1 9
Licensec/ Fa ci lit y Notif icatio n/Su bjec t Le scri p tion. o f items or beents D PH P 2
f Thr ee Mile Is land Faz from R1 5/12 Unce Th' rough Steam Generator (UTSG) Tube Repair process 9
Unit 1 01SG Tube Repair Update. The licensee is in the process of evaluating D N 50-2 89 P roce ss drip and bubble test data conducted on both OTSG's.
i*
(
1hese tests were pertotmed to veriff the leak tightness of 9
the Kinetic Espansion process, new tube plugging and stabilisation repair. The drip ased bubble test are being performed to supplement Eddy Current Testing (ELT) data.
9 Ereliminary data indicated approximately 30 tubes (by the drip test) and 40 tubes (by bubble test) are leaking. The video tapes of f
the bubble tests are being reevaluated for correlation with G
the delp tests and ECT data.
The licensee is identifying small pin hole leaks that ate below the threshold for ECT detection.
(
After' final evaluation, it is espected that tubes with 9
indications of leaks will be removed from service. A final tutule and drip test will be performed to verif y these rapairs.
(
e
(
,0 e
e
(
f 9
(
O 9
f'.
A J
J
's
/
GENERAL PLBLIC UTILITIES OTSG REPAIRS DATE 5/18/83 DATE ITEM DESCRIPTION RESPONSIBILITY-REQUIRED 1.
Restoration Secondary Side
. Tenp. Chem. System S. Levin TBD
. Remove Flush System S. Levin TBD
. Remove Air Conpressor S. Levin TBD 2.
Ops OTSG Status
'x
. OTSG Level "A" 511"
. OTSG Level "B" 519" 3.
Drip Test a "A" 5/18
~
4.
Eddy Current Test 5/13
, m, *,.
t 5.
Tube Plugging & Stabilization B&W 5/19 TBD
. Issue FCA
. Issue DRF for Repairs T. Furctions 5/20
}
8 6.
Miscellaneous Items to Resolve L
. Hydrogen Peroxide Tube Soak (TMM) 5/2
. Decon of Equip In Progress
. Revised Spec for Flushing Rev. 5 g
. Dissolved 02 Analyzer TMM TBD 7-7.
Waiting Documentation '
MNCR Responsibility 215-82 Plug Exploded at WIong A m a of Tube QC 426-82 Wire Brush B6-1 QC 094-83 Weld Repairs in "A" QC 091-83 Feltplug Blowing QC 111-83 Misplugged Tubes QC
-3 119-83 Misplugged Tubes QC
?
8.
Rad Con Exposure Data (Based on SRDs) as of 5/13
. Total OTSG Exposure since 1st Blast - 953.LMan Rem 1
. Total OTSG Exposure since Nov 1981 - 1138..y Man Rem e
. Final Estimate Exposure Since Nov 1981 - 1204 Man Rem 9.
Antlicipated Jungs F
Date Description Responsibility 4-5/18 A - Upper -
Q Levin / Catalytic A - Lower -
9 5/18 B - Upper -
B - Lower -
p
/
)3b b
GENERAL PlBLIC UTILITIES OTSG REPAIRS DATE 5/20/83 DATE ITEM DES mIPTION RESPONSIBILITY REQUIRED 1.
Restoration Secondary Side
. Temp. Chem. System S. Levin TBD
. Remove Flush System S. Levin In Progress
. Remove Air Conpressor S. Levin
- TBD, 2.
Ops OTSG Status
. OTSG Level "A" 511" w
. OTSG Level "B" 51@9" a
7
- 9 io v 2 3.
Results of Dri Tes "A
& "B" 5/18 5/20 m
. Snoop Test' 4
ps+'#
4.
Eddy Current Test h 5/13
. Resolve Blocked Tube in "A" 17-59 g
a -sa. Q 04 %.
n Stabilizatio %
eO 9
[A 6 a. ; -
5.' Tube Plugging % = = y n
.. Issue FCA B&W 5/19
._ Issue DW for Repairs T. Functions 5/20
. Issue New J.O. & IP G. Kull 5/23 6.
Miscellaneous Items to Resolve
. Hydrogen Peroxide Tube Soak (TMM) 5/2
. Decon of Equip In Progress
. Revised Spec for Flushing Rev. 5
. Dissolved 02 Analyzer TMM TBD l0 p udkk3uM.Ma 7.
Waiting Documentation MNCR Responsibility 215-82 Plug Exploded at Wrong Area of Tube QC 426-82 Wire Brush B6-1 QC 091-83 Feltplug Blowing QC 111-83 Misplugged Tubes QC 119-83 Misplugged Tubes QC 8.
Rad Con Exposure Data (Based on SRDs) as of 5/18
. Total OTSG Exposure since 1st Blast - 955.5 Man Rem
. Total OTSG Exposure since Nov 1981 - 1132.1 Man Rem
. Final Estimate Exposure Since Nov 1981 - 1204 Man Rem 9.
Anticipated Jumps Date Description Responsibility A - Upper - AmdM Levin / Catalytic 5/20 A - Lower -
0 5/20 8 - Upper -
B - Lower -
/ %
';l
~ f-IIbl~ Iz -0 50
.5 j
(b lo 96f/F3 A TTAOfMEN T.
1 Phn7 Val (6)
OTS& Q Rsw. TuSE DEFECT LOCArtoN c.No (f.q. of 7,y,
I 5%
4 (l.)
US+0i TC A.
+I T
(Q u.t-0.x 40 3.
,4l 7
(Q 4 Hop to Y.
.Yl I
(L) 4J -04 7f T.
100 la
~ (L) 41~0 ff' L.
11 0 UH 02-to 7
/27 L
(L) ur+o fr e
e O
e e
~'
/37
-n-r SP-1101-12-046 s.[a Ji.
AttachmInc I Page 2.of 2-5/16/83 OTSG B ADDITIONAL TUBES -TO BE PLUGGED WITil WESTINGHOUSE ROLLED PLUG Eddy Current' Data
~ Item
.. Row-Tube Elevation
%IW Volts Plug Location
-1 13 47 US+06 95 3
Both UTS &'LTS 2
38 8
US+06 80 2
Both UTS & LTS 3
55 15 US+07 95 1
Both UTS & LTS.
4-58 12
~US+06 95-2 Both UTS-& LTS
.5
-99 10 US+06 95 3
Both UTS & LTS 6-32 6
US+01 95 1
LTS Only-7 41
-5 US-02 40
- 1 LTS only-8 41 7
US+04 50
<1 LTS only
-9 41-8 US-02 95 2
LTS Only 10.
'100 6
US-0
'95 2
LTS only
- 11
- 127-
'2 US 95 5
LTS only 12 110 6-
.US+02 50
<1 LTS only.
13 13 48 US+05 95 2 coils Both UTS & LTS 14 51
-16 US+05 95 1 coil Both UTS & LTS o
O,
e s
4 9
Mv m
'i
l If-IIo I-Ix - 03 o n4v. 11
%K/r3
)
ATTACH MEN T 1
PART VH (A)
~ Ab'DITIONAL 70(3C-C-To GE StABILI EEb A FTER BUB B LE TGSTS
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SP-1101-12-046 Attachment I Page 1 Of-2
- h4/53 e
OTSG A' ADDITIONAL TUBES TO BE PLUCOED WITH WESTINGHOUSE ROLLED PLUG Eddy Current Data LItem Row Tube Elev.
%TW
.No.'of Coils Plug Location 1.
5-
~40 15-3 40 1-Both UTS & LTS 2.
35 41 14-3 50 1
Both UTS & LTS 3.
64 2
01-20' 50 1
BOTH UTS & LTS 09+05 4.
72 59-06+0 90 1
Both UT.S & LTS
'S+6 50 1.
Both UTS & LTS
- 5.
-126-86-U 6.
126 5 (L)
US+7 95 2
Both UTS & LTS 7.
125' 88 (L)
US+5 95 2
Both-UTS-& LTS 8.
127 91 (L)
US+5 95 2
Both UTS & LTS
- 9..-
140 52 (L)
US+5 95 i
Both UTS & LTS
=10.
2 7
US-02 28-50 1
LTS only.
'11.
5 39 15+13 95 1
LTS Only 12.
70 129 (L)
.US+03-12 95/35 1
LTS only 13.-
73-122 (L)
US+04_
95
'l LTS Only 14.
79 126 (L)
US+02 65 1
LTS only
-15.
98 31 US-10 50 1
LTS only 16.
109 106 (L)
US+04 95_
2 LTS only-17.
120 100 US+02+04 95 1/2 LTS only 18.
120 107 US+02 95 2
LTS only-19.-
126 94 US-10 25 1
LTS only 20.
139 54 (L)
US+02 95 1
LTS Only.
21.
126-92-US+03 95 1
LTS Only 22.
130 92 US-12 95 2
LTS only
-23.
140 62 US-03 80 2
LTS only
-24.-
147 37 US+02 95 1
LTS only
'25.
148 7 (L)
US+04 95 2
LTS only 26.
148 37 (L)
US-01-02 95 2/1 LTS only 27.
149 6
15+02 95 1
LTS only 1
28.
4 4
US+03+05 60/50 1
LTS Only i
)
i l
1 GENERAL PtELIC UTILITIES
'~
OTSG REPAIRS DATE 5/23/83 DATE ITEM DESCRIPTION RESPONSIBILITY REQUIRED
-l.-
Restoration Secondary Side -
. Teg. Chem. System S. Levin
-TBD
. Remove Flush System -
S. Levin In Progress
.R
. Rinnove Air Cogressor (% AgeJ)
S. Levin TBD l
- 2. 1 Cps OTSG ' Status :
. OTSG Level "A" 511"
- ** A
. OTSG Level "B" 519"
-3.
Results of Snoop-Test a "A" & "B"
'5/20 l
A
.B
- 4.
. Eddy Cutzent Test
--5/13
. Resolve Blocked Tubes in "A" 17-59; A5-9 flub
- 4 A,t; le do a ng mme E "B" 122-7; 148-23 Loud
~
- 5.. Tube Plugging & Stabilization 5/23
.-Issue Final FCA B&W 5/20
. Issue DAF for Repairs T. Functions 5/21-
.. Issue New J.O. & IP G. Kull 5/23 6.
Miscellaneous-Items to Resolve
. Hydrogen Peroxide Tube Soak (TMM) % ]M 5/2
. Decon of Equip-In Progress
. Revised Spec for Flushing Rev. 5
. Dissolved $2 Analyzer TMM TBD
. RCS/STSG Pressurizat' ion TMM 7.
Waiting Documentation
- MNCR -
Responsibility-
-215-82 Plug Eiploded at Wrong Area of Tube QC 426-82' Wire Brush 86-1 QC 091-83 Feltplug Blowing QC
-111-83 Misplugged Tubes QC 119-83 Misplugged-Tubes QC
- 8. ' Rad Can' Exposure Data (Based on SRDs) as of 5/19
. Total OTSG Exposure sirce 1st Blast - 956.5 Man Rem -
. Total OTSG~ Exposure since Nov 1981 - 1132.7 Man Rem
. Final Estimate Exposure Since Nov 1981 - 1204 Man Rem 9.
Anticipated Jumps Date Description Responsibility 5/23 A - Upper -
pI L1 LevirvCatalytic A - Lower -
5/23 8 - Upper ~-
B - Lower -
5,ug
- k ?.,. LU M #~
j3l
GENERAL PLBLIC UTILITIES OTSG REPAIRS-DATE 5/24/83 DATE ITEM DESCRIPTION RESPONSIBILITY REQUIRED 1.
Restoration Secondary Side.
. Tenp. Chem. System
-S. Levin TBD
. Re. move Flush System S. Levin.
In Progress
. Remove Air Corrpressor S. Levin TBD 2.
(ps OTSG Status f5cco
. OTSG Level "A" 500" 7
" #Y
. OTSG Level."B" 451" -
76 nQ @
- 3..Results of Snoop -Test 8 "A" 5/23 h,= c_+b 4.
Eddy Current Test 5/13
. Resolve Blocked Tubes in "A" 17-59; AS-9
. Resolve Blocked Tubes in "B" 122-7; 148-23 5.
Tube Plugging & Stabilization 5/23
. Issue Final FCA B&W-5/20
. Issue DFF for Repairs T. Functions 5/21
. Issue New J.O. & IP-G. Kull 5/23 6.
Miscellaneous Items to Resolve
. Hydrogen Peroxide Tube Soak (TMM) 5/2
.'Decon of Equip In Progress
. Revised Spec for Flushing Rev. 5
. Dissolved 02 Analyzer TMM TBD
. RCS/0TSG Pressurization TMM
-7.
Waiting Documentation MNCR Responsibility 215-82 Plug Exploded at Wrong Area of Tube QC M 426-82 Wire Brush B6-1 QC 091-83 Feltplug Blowing QC ebaJlll-83 Misplugged Tubes QC 119-83 Misplugged Tubes QC 8.
Rad Con Exposure Data (Based on SRDs) as of 5/19
. Total OTSG Exposure since 1st Blast - 956.5 Man Rem
. Total OTSG Exposure since Nov 1981 - 1132.7 Man Rem #3A E
. Final Estimate Exposure Since Nov 1981 - 1204 Man Rem Gy 9.
Anticipated Jumps Date Description Responsibility 5/24 A - Upper - W A d [ Q j, Levin / Catalytic A - Lower -
-5/24 B - Upper r A A B - Lower -
\\
/J9
C GENERAL PLBLIC UTILITIES OTSG REPAIRS DATE 5/26/83
~
DATE ITEM
. DESCRIPT' ION RESPONSIBILITY REQUIRED
-1.
Restoration Secondary Side
. Tenp. Chem. System S. Levin TBD
. Remove' Flush System S. Levin In Progress
. Remove Air Conpressor S. Levin TBD
'2.
Ops OTSG Status
.- OTSG Level "A" 540"
. OTSG Level "B" 450" 3.
Eddy Current Test 5/13
. Resolve Blocked Tubes in "A" 17-59; A5-9 M oldnA
. Resolve Blocked Tubes in "B" 122,7;.148-23 d 4.
Tube Plugging & Stabilization 5/23
. Issue New J.O. & IP G. Kull 5/25 yupne @
7 asA
"*"A 4 48^ h h 84 W s t G 5.
Miscellaneous Items to Resolve
. Hydrogen Peroxide Tube Soak (TMM)
Plt. m int.
Being Fab.
. Decon of Equip In Progress
. Revised Spec for Flushing Rev. 5 T. Functions TBD
. Dissolved 02 Analyzer TMM Plt. Eng.
. RCS/0TSG Pressucization TMM Plt. Eng.
. GAP Growth Measurement STP Plt. Eng.
5/24 6.
Waiting Documentation -
MNCR Responsibility 215-82 Plug Exploded at Wrong Area of Tube QC 091-83 Feltplug Blowing QC 119-83 Misplugged Tubes QC 1
~
7.
Rad Con Exposure Data (Based on SRDs) as of 5/24
. -Total OTSG Exposure since 1st Blast - 960.8 Man Rem 10
. Total OTSG Exposure since Nov' 1981 1137 mn Rem 8'31
. Final Estimate Exposure Since Nov 1981 - 1204 Man Rem 8.
Anticipated Jumps Date Description Responsibility 5/26 A - Upper - hk.Mes Levin / Catalytic A - Lower -
5/26 B - Upper - @
B - Lower - @
6 don.
l
,m
.,._.._,._._.,_______,________r.
.,_,,._.,_.m_...
.,rm-,_m..
p-GENERAL PtBLIC UTILITIES
-0TSG REPAIRS DATE 5/31/83
.DATE ITEM
' DES mIPTION-RESPONSIBILITY REQUIRED 1.
Restoration Secondary Side
. Tenp.' Chem.' System S. Levin 6/3
. Re, move. Air Conpressat S. Levin TBD
- 2. ~ @s OTSG Status
. OTSG Level "A"J540"
..OTSG Level "B" 450" M 5/31 3.
Drip ~ Test a "B" 7 y 3 fare 4 A O O A t.90
& W Aoun
- 4. -Eddy C wrent Test 5/13
. Resolve Blocked Tubes in'"A" 17-59; A5-9 5/23
- 15. Tube' Plugging & Stabilization G. Kull 5/25
.-Issue New J.O. &'IP Luedt # A.6 Misc'NNous Items to Resolve
^
'6.
e
.. Hydrogen Peroxide Tube Soak'(TMM)
Plt. Maint.
Being Fab.
. Hydrogen Peroxide Tube Soak (STP)
F. Paulewicz TBD G,Gul In Progress
. Decon of Equip Rev. 5
-T. Functienc -
. Revised Spec fw Flushing
.! Dissolved 02 Analyzer TMM f.ms-uPA)
Plt. Eng.
. Dissolved 02 Analyzer STP F. Paulewicz TBD
. RCS/0TSG Presswization TM Plt. Eng.
. RCS/0TSG Pressurization STP OPS TBD
. GAP Growth Measwement S1P Plt. Eng.
~5/24
- 7. ~ Waiting Documentation MNCR Responsibility P 215-82 Plug Exploded at Wrong Area of Tube QC 091-83 Feltplug Blowing QC 119-83 Misplugged Tubes QC a2 -83 mihee i
. 8. - Rad Con Exposure Data (Based on SRDs) as of 5/26
. Total OTSG Exposwe since 1st Blast - 967.5 Man Rem
. Total OTSG Exposure since Nov 1981.- 1143.7 Man Rem
. Final Estimate Exposwe Since Nov 1981 - 1204 Man Rem 9.
Ant'icipated Jumps Date; Description Responsibility 5/31 A - Upper - G i~
,y ph w g) 'LevirVCatalytic A - Lower - t erwx.d (8
y J.j/ > y fg 5/51 B - Upper -
N.
,.-f,
,i B - Lower - d,ql L '
- *?
' }.N kt%4% }g fu,
/4/
c
. _1
-GENERAL PLBLIC UTILITIES
.OTSG REPAIRS-DATE -6/1/83 DATE
. DESCRIPTION RESPONSIBILITY REQUIRED ITEM L1. ; Restoration Secondary Side.
Tenp. Chem. System S. Levin 6/10_
Remove Air Compressor S. Levin TBD j
- 2. - CDs OTSG Status i
F-OTSG Level "A" 570" OTSG Level "B" 590" e-
- 3. - Results of Drip Test S "B" 5/31
~ 4 1Results of Snoop. Test S "B" 6/1 5.. Eddy Current Test
-5/13 Resolve Blocked Tubes in "A" 17-59;'A5-9 In.-t -
5/23
- 6.. Tube Plugging & Stabilization g au AA sq g _ g 7.~
Miscel]
s Items to Resolve
.gw n swb -. Hydrogen Peroxide Tube Soak (TMM)
Plt. Maint.
Being Fab.
. Hydrogen Peroxide Tube Soak (STP)
F. Paulewicz TBD Decon of Equip In Progress
.. Revised Spec for Flushing Rev. 5 G. Reed TBD Dissolved 02 Analyzer T M Plt. Eng.
5/31 Dissolved 02 Analyzer STP 4-dnty me6 F. Paulewicz TBD RCS/0TSG Pressurization TM tun Plt. Eng.
6/1 RCS/0TSG Pressurization STP (90 OPS 6/2 GAP Growth Measurement S1P Plt. Eng.
6/2
.g 8.
Waiting Documentation MNC.R Responsibility 215 82; Plug Exploded at Wrong Area of Tube QC 091-83 Feltplug Blowing QC 119-83 Misplugged Tubes QC Documentation Discrepencies (glac 4est) 142-83 QC 143-83 Documentation Discrepencies QC 9.
Rad Con Exposure Data (Based on SRDs) as of 5/27 Total OTSG Exposure since 1st Blast - 967.8 Man Rem T%l Total OTSG Exposure since Nov 1981 - 1144.0 Man Rem ll($,
- Final Estimate Exposure Since'Nov 1981 - 1204 Man Rem
[ slabliM** *"
[S Seep
- 10. Anticipated Jumps Responsibility g4 g 4 Date-Description 6/1 A '- Upper - 9. a,IMA lie se a*/
Levin / Catalytic 0
g A - Lower - >
6/1 B - Upper - any ted Gamm4 B - Lower.- daig
/%
9 NA
l
' GENERAL Pt.BLIC' UTILITIES OTSG REPAIRS.
DATE 6/3/83-DATE i
ITEM
. DESCRIPTION RESPONSIBILITY REQUIRED 1
-1.
Restoration Secondary Side j
.-Tenp.: Chem. System
-S. Levin 6/3' i
. Remove Air'Cospressor S. Levin TBD
.2.
Ops OTSG' Status
. OTSG Level "A" 570" m3._v qq
.. OTSG' Level "B" 470"
- 3.. Mylar Light Test e "B" 6/2
. SM M
~
- 4. - Eddy Current. Test 5/13
. Resolve Blocked Tubes in "A" 17-59; A5-9
. Resolve Blocked Tubes in "B" 103 5.
Tube _ Plugging & Stabilization 5/23 4.t 9 PJL iQ M beak d M 6.
Miscellaneous t to Resolve
-p. Hydrogen Peroxide Tube Soak (TMM)
Plt. Maint.
Being Fab.
' p. Hydrogen Peroxide. Tube Soak (STP)
F. Paulewicz 6/6
.. Decon of Equip In Progress
-Revised Spec for. Flushing Rev. 5 G. Reed TBD
' M I) % M issolved.D2 Analyzer TMM Plt. Eng.
5/31
. Dissolved 02 Analyzer STP G. Reed TBD
. RCS/0TSG Pressurization STP 2QA Plt. Eng.
6/1
. RCS/0TSG Pressurization TMM OPS 6/2~
.G Growth Measurement STP 34D Plt. Eng.
6/2' g
.7.
Waiting ation MNCR Responsibility
,215-82. Plug Exploded at Wrong Area of Tube QC 091-83 Feltplug Blowing QC 119-83.Hisplugged Tubes QC M
QC 142-83 Documentation Discrepencies QC 143-83 ' Documentation Discrepencies* e-^f 146-83 B&W Plug Leaks (127-2) 8.
Rad Con Exposure Data -(Based on SRDs) as of 6/1.
. Total OTSG Exposure since 1st Blast - 976.7 Man Rem (20, 5 c
.' Total OTSG Exposure since Nov 1981 - 1152.9 Man Rem 11 %.?
. Final Estimate Exposure Since Nov 1981 - 1204 Man Re &m rs so
- 9. ' Anticipated Jumps
-Date Description Responsibility
'6/3 A - Upper -
WN[
Levin / Catalytic I'
A - Lower - to e@
6/3 B - Upper - st7-r. W/
_ __ ty B - Lower -
6' M Tei b A GTSCr) 0 h Tomen Mr
g is m A
Jy ng nk MR
~
sw ws-z Subd askA+zh y t
M /u M
. W
)
etu.ud% dam.n/4 x e
e I
l I
e l, '
i I
I c
GENERAL PlBLIC UTILITIES-DATE 6/6/83 OTSG REPAIRS DATE.
ITEM DESORIPTION -
RESPONSIBILITY REQUIRED 1.
Restoration-Secondary Side..
. Temp. Chem. System S. Levirl 6/10
. Re, move Air Compressor S. Levin TBD 2.
Ops OTSG Status
. OTSG Level "A" 570" A-
. OTSG Level "B" 470" 5
Mylar Light Test S "B" 6/2 3.
h rnorte. mglw M Eddy Current Test.
5/13 4..
' Resolve Blocked Tubes in "A" 17-59; A5-9
.-Resolve Blocked Tubes ~in "B" 103-1 Stabilization 6/5 Tube Plugging q't. A ee-5.
3'ioc 4 6.. Miscellaneous Items t$ Resolve
. Hydrogen Peroxide Tube Soak (STP)
F. Paulewicz 6/6
. Decon of Equip In Progress
. Revised Spec for Flushing Rev. 5 G. Reed TBD
. Dissolved D2 Analyzer TMM Plt. Eng.
5/31
. Dissolved 02 Analyzer STP G. Reed TBD
. RCS/0TSG Pressurization TMM Plt. Eng.
6/8
. RCS/0TSG Pressurization STP OPS 6/2
. GAP Growth Measurement STP Plt. Eng.
6/2 Waiting Documentation 7.
MNCR Responsibility 215-82 Plug Exploded at Wrong Area of Tube QC 091-83 Feltplug Blowing QC 119-83 Misplugged Tubes QC
.142-83 Documentation Discrepencies QC
^
l 143-83 Documentation Discrepencies QC 146-83 B&W Plug Leaks (127-2)
QC l
l 8.
Rad Con Exposure Data (Based on SRDs) as of 6/2
. Total OTSG Exposure since 1st ihast '- 980.5 Man Rem NT
. Total OTSG Exposure since Nov 1981 - 1156.7 Man Rem 8161
. Final Estimate Exposure Since,Nov 1981 - 1204 Man Rem 9.
Anticipated Junps
)
Date Description Responsibility
]
4/6 A - Upper -
g, g Q g g Levin / Catalytic A - Lower -
6/6 B'- Upper -
klk H T (tsr0 % S B - Lower -
n l
(vsDJ k en. u)
/
GENERAL PtBLIC' UTILITIES-DATE 6/7/83 OTSG REPAIRS DATE ITEM DESCRIPTION RESPONSIBILITY REQUIRED 1.
Restoration Secondary Side
. Temp. Chem. System S. Levin 6/10
. Remove Air Compressor S. Levin TBD 2.
Ops OTSG Status
. OTSG Level "A" 575"
. OTSG Level "B" 456" 3.
Snoop & Drip Test a "A" 6/10 4.
Eddy Current. Test 5/13
. Resolve Blocked Tubes in "A" 17-59; A5-9
-5.
Install Permanent 2nways 8 "B" 6/7 6.
Tube Plugging & Stabilization 6/5 s i 4, 4, 942,6 7.
Miscellaneous Items to Resolve
. Decon of Equip In Progress
. Revised Spec for Flushing Rev. 5 G. Reed TBD
. Dissolved 02 Analyzer TMM Plt. Eng.
5/31
. Dissolved 02 Analyzer STP G. Reed TBD
. RCS/0TSG Pressurization TMM Plt. Eng.
6/8
. RCS/0TSG Pressurization STP OPS 6/2
. GAP Growth Measurement STP Plt. Eng.
6/2 8.
Waiting Documentation ER Responsibility 215-82 Plug Exploded at Wrong Area of Tube QC 091-83 Feltplug Blowing QC 119-83 Misplugged Tubes QC 142-83 Documentation Discrepencies QC 143-83 Documentation Discrepencies QC 146-83 B&W Plug Leaks (127-2)
QC 9.
Rad Con Exposure Data (Based on SRDs) as of 6/6
. Total OTSG Exposure since 1st Blast - 984.7 Man Rem TT5
. Total OTSG~ Exposure since Nov 1981 - 1161.0 2 n Rem il 7 t,s
. Final Estimate Exposure Since Nov 1981 - 1204 Man Rem
- 10. Anticipated Jumps Date Description Responsibility Levin / Catalytic 6/7
. A - Upper - ) g g h,
A - Lower - i 6/7 8 - Upper -
B - Lower -
D l
16,
-