ML20050C965
| ML20050C965 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 04/30/1979 |
| From: | ANACONDA CO. (DIV. OF ATLANTIC RICHFIELD CO.) |
| To: | |
| Shared Package | |
| ML20050C841 | List:
|
| References | |
| RTR-NUREG-0588, RTR-NUREG-588 79117, IEB-79-01B, IEB-79-1B, NUDOCS 8204090457 | |
| Download: ML20050C965 (42) | |
Text
{{#Wiki_filter:-
--r- e ANACONDA $
ANACONDA-CONTINENTAL REPORT NO. 79117 PREPARED TOR TENNESSEE VALLEY AUTHORITY ON L.O.C.A. - 5 IPEC, MARION, INDIANA APRIL - 1979 l 1 r ! l l l e204090457 820407 PDR ADOCK 05000327 P PDR The Aneconda Come , Conenentel Wire a CeMe Corp. wire and Cable Division P O. Box 1863 York. Pennsylvania 17405 717/792-2644
PAGE_ SECTIOli TITLE INTRODUCTION 1-1 A. . 2-1 B. SPECI!!EN DESCRIPTIO!! TEST PROGRA!! 3-1 C. 16 - 1 D. TEST RESULTS CERTIFICATION 5-1 E. APPENDIX A - CERTITICATION OF RADIATIO!! APPENDIX B - ADDITIONAL POST LOCA TESTING APPENDIX C - ANALYSIS I 4 0 2-- . _ . _ _ - , , . -
. _ . - _ , , , , , _ _ , . . - . , . . _ _ _ - . . _ __v.-,--
= *. A. INTRODUCTION A group of electrical cables were subjected to an envi-ronmental test program based on the guidelines of IEEE Standards 323-1974 and 383-1974 and the requirements given by Tennecsee Valley Authority to determine their suitability for service within the containment of Nuclear Power Generating Stations. This report specifically deals with 21 cables identified as single conductor NSG, low voltage power and control cable. A portion of the cables were thermally aged as follows: a) 7 days @ 210 C; and b) 28 days a 210 C; and then subjected to either 20 or 120 megarads of gamma radiation from a cobalt-60 source at an average dose rate of .56 megarads per hour. Both aged and unaged cables were then subjected to a 16 day exposure of steam and chemical spray which simulated the in-containment environmental conditions resulting from a postulated loss-of-coolant accident (LOCA) and those occuring during the cool d.wn after the LOCA with the cables electrically energized during the LOCA simulation. The temperature / pressure objective of this exposure was as follows:
- 1) A rapid rise to 280*T (137.7 C) at a steam pressure of 35 psig with a 3-hour dwell at this temperature and pressure.
- 2) A 3-hour dwell at 240 0 T (115.5 C)/11 psig.
- 3) A 4-hour dwell at 215 T (101.6 C)/0-5 psig.
0
- 4) A 4-day dwell at 203 0T (95 C)/0 psig.
- 5) A 12-day dwell at 180*r (82.2*C)/0 psig.
1-1
I i i l . The program was conducted by Anaconda Industries, a t division of the Anaconda Company, Insulated Products Engineering Center, Marion, Indiana, from the period of October 1978 through l April 1979. 4 l 1-2
n sprcTHEN DrscRIPTION Description of the cable specimens and their required energizing potentials and currents are present in Table I: TABLE I CABLE SPECIMEN DESCRIPTION & ELECTRICAL LOADING REQUIRED NOMINAL MEASURED ELECTRICAL CABLE SPECIMEN DESIGN OUTSIDE LOADING NUMBER DESCRIPTION DIAMETER DIAMETER VAC/AP.PS 49.1.1-49.1.3 Low voltage power .198 .200 480/25 49.2.1-49.2.3 and control cable, 49.3.1-49.3.3 HSG 1/C 12 AWG 49.4.1-49.4.3 (7/0305), tinned 49.5.1-49.5.3 copper conductor, 49.6.1-49.6.3 45 mil wall of 49.7.1-49.7.3 CC-2193, Nuclesil silicone rubber in-sulation, 6 mil wal] of glass braid covering. i e l i . i l l 2-1 I l
C. TEST PROGRAM The test program consisted of thermal aging, gamma radiation exposure, simulated LOCA and post accident tests. It was based on the general guidelines of IEEE Standards 383-1974 and 323-1974, which are used for qualification testing of safety-related electrical cables for service within the containment of nuclear power generating stations. A description of the specimen number and its associated thermal aging and radiation is given in Table II. I - THERMAL AGING Prior to air oven aging the cables were electrically tested - AC Voltage was applied and insulation resistance was measured. The cables were visually inspected prior to being aged in an air oven. Following mounting on the mandrel (Some of the samples could not be mounted on the mandrel.) the cables were thermally aged as follows: , I i a) 7 days Q 210 C. b) 28 days 0 210 C. II - GAMMA RADIATION EXPOSURE Host of the cables were mounted on 32 inch diameter mandrels and exposed to gamma radiation from a cobalt-60 source to an accumulated air-equivalent dose of 20 or 120 Mrad at an average 3-1
l dose rate of .56 Mrad per hour. (Some of the samples could not be mounted on the mandrels and were exposed to gamma l radiation in the form of coils.) The radiation dose is based l on guidelines expressed by the Tennessee Valley Authority and IEEE Standards 323 and 383 and is intended to encompass the radiation dose received during normal operation (2x10' rads) plus the dose received during one typical LOCA exposure described by Tennessee Valley Authority (1x10' rads). The combined dose was 1.2 x 10',rada. Following the radiation exposure, the cables were re-inspected. III - STEAM / CHEMICAL SPRAY EXPOSURE WITH ELECTRICAL LOADING i The 13 cable specimens mounted on the 32 inch diameter mandrels were moved into a 40 inch diameter test vessel (autoclave). The other 8 cable specimens were installed in the test vessel (autoclave) in the form of coils. The cables were spliced to single conductors in the test vessel and the single conductors were passed to the outside of the test vessel through metal tubes sealed with epoxy potting compound. The ends of these " connecting" cables were attached to the electrical energizing circuits. The required' electrical energizing levels are provided in Table I. The loading arrangements are shown in Figures 2 and 3. Approximately 20 ft. of each test cable was contained within the test vessel. 3-2 l
Following a set of IR measurements while the chamber was 0 brought to stabilization temperature (120 F) with a continuous water spray, the cables were energized and exposed to a steam / chemical - spray environment for 16 days in accordance with After the cooldown period the profile illustrated in Figure 1. which followed the end of the LOCA profile, the IR of the samples was remeasured and the specimens reinspected after removal from the test chamber. A view of the cables after LOCA is provided in Figures 4 and 5. IV - MANDREL BEND TEST _ ' ' At the conclusion of the steam / chemical-spray exposure described earlier, all of the cables were cut from the splices, removed from the mandrel and straightened. The central portion of each sample was coiled around a mandrel having a diameter of The cable was approximately 40 times the cable outer diameter. then visually inspected for evidence of cracks or other breaks in the insulation. The coiled samples were then immersed in tap "eter at room temperature for one hour and their IR measured. V - HIGH POTENTIAL-WITHSTAND TEST After the mandrel bend and IR test, the coiled samples were subjected to a 5-minute application of high voltage. f The conductor of the single conductor cables was connected to the anergized lead of the high-potential test set with the ground lead of the test set connected to the water tank by means of a copper wire immersed in the water tank. 4 e 3-3 l
TABLE II THERMAL AGING AND RADIATION EXPOSURE l i l i l SPECIMEN : NUMBER THERMAL AGING RADIATION COMME!!TS j l 49.1.1-49.1.3 None None All samples in coile l 49.2.1-49.2.3 None 2.0 x 10' Rads ; 8 ! 49.3.1-49.3.3 None 1.2 x 10 Rads 49.3.2 8 49.3.3 are in coils l \ i
'0
[ 49.4.1-49.4.3 168 Hrs. 0 210 C 2.0 x 10' Rads 49.5.1-49.5.3 168 Hrs. 9 210 0C 1.2 x 10' Rads 49.5.2 & 49.5.3 are- < I in coils I
,' 49.6.1-49.6.3 672 Hrs. 0 210 C 2.0 x 10' Rads i
0 49.7.1-49.7.3 672 Hrs. 0 210 C 1.2 x 10' Rads 49.7.3 is in coil form l I l l l l ' 1 i
' 3-4
i FIGURE I l
' ~.
LOCA PROFILE (SEE NOTES FOR FIGURE 1)
-ELECTRICAL LOADING E CllEMICAL SPRAY .-. - .
r-300 s'
.j,
.i . i g- ..
i,
, .l . . . i i .p
.i ;
, , . g. :
... -a g .l. .
.i . .
j
- .. ,. 4 ,-
l; i,. s* ~.~L_. g
' l PROPOSED- --
f, 4 ,I .. : t . . .. . . n. . -., 3.. . i
- r. :.g .
g . j .i c
... - - .r 2 8 0.aF (35 . P, S I C, ) .
' .,,. .i.. ..
g. {.. 6I t . 7 .l. ,. .
.,.i .
! .. - ---1 *
[ - i* yo 4-a - - l , l ..- :
* . -l
- o-.-
R. E.QU. I. R. E, D -
. 1 .
275 t .. . j. _.. _. ..4..
..-{ ,. ;.i.
- 1. ; . l i. r. l
- j. q , .,.p,.. ..i.
4i ", .- . . i" . ... ]'*
. .l..
i itj* k.. ^ - r 3 . ... . ' b, _.-.b
..: ,i.
~
,( 2 Q .8 6.ps PSIA): ' "....r". .. ,i _} ,. .p .... .-
..p .__ .
._,.b Fs . ,,4 .
. .f.: . . fc.s p ., il _.
. , ,0, 216 gc) -, . -
- 7. +.,., y. _2. _2_.
,,.4, . q.
3-'
'8 1 -
.. f.. ..
- s. ....,..-L...
y ..i,7. _,r , ,
.ge.' -l-
.. , r,
./. h...
g ,n , i.
. : p, ". . -1 -r ,-- e. . p-+.s ~ -
I, L6
,ll. 1.
;.,' ,,*4* _,J <
g.J. .q i r "l .a .
. 9,8; ,
i . , .1,. g-- +, g... .
,..s ... ..
250 -
- s. . , . . .. I p . . ; . ,..,,
i t
.t'
+l i'
- -i F2- '" -
~l4-l . , !. "" '
. .: ,. . l .:..
i s. . .. PoC k G) ~ ' 'i
. ,d .. .. '250*r.;(1 P. E G. .). ,r.*s.i i.t
- o. @.s
~
g,
. :S. 310* -
d
&1'Til' 6.. e" .,.4 A
.. 5..
.t'..d - .;- . -
8J . i' T-
. ,f.; ^- F
;- ' ~_ ' , . H,. 7 H
-_ ' -4 3 ,. , . ,.
--+- .:_ ,. - - - +t r, --
-..-+.1 x'M{1. f rp l' t f H3-t " *l f~
- e.-!q-r :' m
'[ p, : . r -r t
-. !N -lL$E CON 6N.4.p
.q;.:l ..4 ,. 4
- 3: 1-t -,
4E .,
-l - -
v + .1 -- j ,.
- ll!., t.-
, 4 .
j.. dp.. - m. . '-l"' + I4, ,r:'. ' s j i.- F. t. . 7 j. a -, y.
..g --_r. .c'
- .b .
,%, , { ;. .! ..
n . . t, ,.,.} g,,. 4 ,
..... i.1. . 1,. . - -
"I-
,,,q> I' *;] -
- u. g. I- I- -3. 4
;+ -
r'-
+F, H. .,. l. U
-t. ' ' '
225 d '- o . - ---- -
'i' 8- '
6'
. . , l.d-)q._-
,-a g I ... n b,- <
e n v ,..[. , . . r-
,,g
{ ., d.. , .g,
. .,i, <
t .. l q 1 '.3 3. l:, . 15".r - ( o. ,5, ;.l P,h . .. . g , , . . . . . .i .
'. lr. -
w j..i. . .. , 1, ' . ; ,g . , ;.39 7lj, . . . t ...i. . . 4 :,. ,a _ .. - 6 9. ,
. .j < .. . .
1- . ia . . . . . . . . . -.i, l -t- -6
.;, y. . n't., 9:.
i. ac ,..l.
-- '+
1,
- . - . ,t - i..-
"t. y
...-7 ----- --J '.1, f. t. +, ! a
.i. 7. . -
3 Iy* . . - - ' . -. 1r.- , ..._ M. q ,q l r .r -- t. . .-- -.;*i .- . t
. ! ,1 . .. . pp
- e 3 y g- ; ,,. . . :
2.0 3,* F. 'C 9 P P.SG 1 ).~ ' 'I j ,' .
, p. , ..y..7 .
4 .
- 2- --
. p. ,i . 1-
; i !I.di g , , ,
-). :, .
r ,
. l t ' . i. '
w a . . .. ,
. , . _7.,. . -wi. c. .
p . . , . i ,.4
.M . . '.1 ! . 'ie- p. ,. .t r. ', . . n,. .-
200 - ,
. 3 ,3. e t+- sgr - -
*i- I - *- -
- a. ,
a.. i. ' 34L - .. -.! l: 6h; .. ..j [-1' ' t . ... .. . .. . .. .- 1 j,. ' t, b. g
- a
.....g _ . - . - -i-r - - --
.a .; . . .. ...
.[. t , .. ..
4il
'l 4Q. ,
d- c- I I;' . , . , . ... . .
.t r .,. .. . . . . . . _ , .. ,,,-
,H
, l. p. . . or 9 d
_._...,....9.._,.8""- * - _ , ' . pi' _t "..
*. ;. : . r. , ., .
.g_.,{.
J ..J. .,p r .. 7
- y _
_.t. . . . . , ,, pg 1ggo p . (0.. P. 5. t.G) - j. j.;.
- . - p .,,. ,
3.,. - . -
. , . y. 4,;. 7. .
}, ,.3.y l... * .. .
.g. g .4 . -
p,...,..l
... ..... g. J. l .l.; ,.e. pl.e...
.lp . . .;,,
. i ..
A
.. ,[. .. L
. l' ..- .% {
..p ., !n r --- -
'I .ip
-A.F a 3, .
h,- l. e.,, ,. . - -' '
.gl. .. ,.l. . a; , r- t :t *i .
r *-
--l.- '-
. r. .7 . . .. -IR-
.. ..;.. , :3 .
, -L, j j&,.
- 175 r. 3. ,.
f
I -
- ;I - k -h.,-/[ .l - '
~ --
.k,-)6 x
- '- i*
1.
.l. g. i i-
.y
=. + e. .- ..
g ;.. g., . . .
. r. .d . , -
i d,.id ..}n .,,, .,.. \ 9-5L' ... M.,. '- l .s
!! [- :,:i.: .j.
.7 4o
. 4 . .. ..g. . . . . . . .
..; ,.;. ., .,,i i., . .:% ._ .. .,. -.. .. -
j o .' . . . ,
. jg t l ; .,.
.. "* - . 3- - -
'_g - 4; i,_.7,.
,t . . . .g.
J. U I,jg-' _4-- . - ' -~. l-i . .. . ;,. .
- ; .;le_ ._;. .r-__,- . . . .,
. ;. . . . , . ._.g 2 .. . _ . .
,q;. . , . ag j.;. p. .. .t .
. .. .y. ~
.a . . .-
pb-..,.; ,.
. ... 3 -
7 .. i ,1 g ..q tp:, p ,0 .
. ,q.n.. ,
l ..
,A.
.}
...l . .. ,. ,; .
...3l @, -%
s. M gw. .g:..I.._ 4
.e .,. .. . . ,t., ,
, , j g. ,.; q,Ji
.., .g . ..i. . . .
em; a ni - -- i i! - 2
.. r i-i1 tj J .
g, ; P i,;. ;:, ,; , . ; .;;; G, @ p.: ., p_ 4 . ...g. , , .i....:
....;..p
, . , . . , . ,t._
.2 - ;,;, .<.c ,. -
,p,,...
e.,.. .. ...F ., 2 i . ,.,. 4 eg.. g , ...., .,, ... . , . 8 eli ,, j.-, . 3
.,4 ... ..-
.3.?.-
; .j I-.L g- -8.
*[ . 3j _--d.v.
- l, 64,.1 .4 .Ih.4'.; w -
...,q ,;. . .; . ;e. 4 - .
tp. . , .
.. L 1 a _.< x . .l .L a, , 3 . . . . : . [ - . ._:..u
. , . ... - . 6 .
. e s.
q.5
- . i;i
... ,..I. L.l ....r l 4 ;j. 4.
..a L .L
,..L. . .
....;.. . . ; r.
-;_f.
~. [t...g.
. 9, ... ., .._
.q._ ...
. . . r. ..
.g. .qs . 1g2 ,,.,t...
...i .
4j ,gj :g .
. . .a tu.4
'l.
. .,.p,. 39
.u.
. g..L .q.
y
.3. 7.. ,;,.. .o F
.[..i.:.
q ..o 4 l' 3
.. .s . . . ..:.. .. '
4 11 f. - -F
. . ! i-i ,r ' b]1 _! ;, , ; ELAPSED TI,ME (SEC.,3M I N u- ,H_R S. ,, DAY S.)._.7 -
0.. -
.(l... ,
M... .. 1 6 10 1 li 16 0 10 3 DAyg DAYS
""""'-e un uoe u'i c poc DAY
I NOTES TO TIGURE I i (1) Actual temperature rise through first 10 seconds, 180 T. Time to 250 F was 48 seconds. For the balance of the j profile, the temperature was maintained at +2 to 30T during the test with the equivalent rise in pressure I (%2 psig) above 2120T. (2) Electrical loading was interrupted for short periods l l to permit IR measurements. (3) Chemical solution was sprayed radially from the center of the mandrels for the entire test at a rate of approximately 0.15 (Gal / Min.)/FT2 (6.1 (liters / min.)/M2 ) i at the cable location. 1 l The chemical solution was composed of: 2000 parts per million boron as H 3B0 3* t (4) The pH of the chemical solution was 8.2. The pH of the steam condensate was 8.0. The pH of the chemical solution was maintained between 8.0-8.2 during the test. , f , 3-6
w .. ,
.n y r.... ., ,
h . -
.' ).' ; > ,
e .r ,
'Y. '? ,,,; y [. * ' -
~
l% }lG$Af!jQ'yQk
~:u fe I , * .y
~0 l I
- 1.,* * .
.I '
\
$ l$gj..p.[\{
nf
~
1 i < r 6\
)fy'tp> '
{'
'4 i
~ r.
Yl
- d. Ii e , '&- ('[ (I ]9
, It, ,)I:
d
).1 u 1
il
. r.;. i ft. f
1 If t e ,' ,i l fd t,
! A l' j (! '
l \ { i' .- .* .
, es l(' H r --
l I ' lj I , ' .' : ; : 1. =
>[gh.,, yc k! i ..h
) . '4 , -
q
' J \.
i L\
' .)f i
J j ['.l,? . j.V-k .: .. 1 I .
- t'
-$.6,. $~:c: ,.\
'.; j )l.'.. .
pj. . : 1 t
.;, t z., .
. $ _s.
c.y.M. . R L .Q. : I. ?<
% .. . . .. ,q : . :+t..
y% v
'xj'e,4 i;.,'
yy;,
- ,, hit.N (:G.%.
.' # ::ff .. ' ; % .yN g.).. =~
- = t:, .
FIGURE 2 FIGURE 3 View of cables and mandrel View of cables and mandrel prior prior to LOCA exposure (20 Mrads). to LOCA exposure (120 Mrads). CSome cables shown in this view (Some cables shown in this view are are not discussed in this report.) not discussed in this report.)
1 l W 4
.2
- p
- e
- .! [
i f '
'} '
'I '
wi ;..-. 3
'f. I ' y
,1 ;
1q ' kj . , b' p , j /, '
, lk- i
)
;; l' 'I !8 '
j i , e! ) c/t I
,t . .
.. i m . .
i i " .], i
? 0 I .
l l
. \ ' f (, 1, 1 l !
- f fi ,l ) . . ,
j 't ij , N ., g'4 l, ' I( 0 I
' ', I'-
. 3 , Q, ,
a
>..: i . ,.
l. ('-
't .
l .A ., .
! FIGURE as FIGURE 5 View of cables and mandrel after View of cables and mandrel after ;
LOCA exposure (20 Mrads). LOCA exposure (120 Mrads). i (Some cables shown in this view (Some cables shown in this view are not discussed in this report.) are not discussed in this report.)
I b FIGURE 5 FIGURE 6 (From inside mandrel) c n i lo lass radf a e t imp n et chemkk a
D. TEST RESULTS I - THERMAL AGING The cable samples were aged as follows: 28 days 0 210 C; and 7 days 0 210 C prior to gamma radiation exposure. Visual inspection of the cables after thermal aging re-vealed little effect except that some of the cables were slightly discolored over the glass coverings and exhibited increased stiffness. II - GAMMA RADIATION EXPOSURE The certification for the 20 Mrad and 120 Hrad radiation exposure with information on the dose rate, temperature and dosimetry is included in Appendix A. There was no visual change in the cables as a result of the gamma radiation exposure.. III - STEAM / CHEMICAL-SPRAY EXPOSURE - INSULATION RESISTANCE MLA5UREMEIGS The LOCA, Steam / Chemical-Spray Exposure was provided in accordance with the profile outlined in Figure 1. The chemical spray was initiated prior to steam exposure and the required saturated steam temperature / pressure dwells were provided for 16 days. Fresh solution (pH = 8.2) from a storage tank was sprayed onto the cables for the first 24 hours of the test after which the solution was changed daily by alternating from one holding tank to another with fresh . i solution made up each day. O 4-1 i
The results of the IR measurements are included in Table III. The IR sequence is shown in Tigure 1. i l IV - ELECTRICAL LOADING j ' All cables, except 49.2.1 which was noted as being damaged upon return from Isomedix, held their electrical i loading throughout the 16 day LOCA test. Power was removed to permit IR measurement. V - VISUAL INSPECTION FOLLOWING STEAM / CHEMICAL-SPRAY EXPOSURE From a visual inspection of the cables following the steam / chemical-spray exposure, after the mandrels and cables were removed from the test vessel, it appeared that the cables j were in good condition, but had chemical deposits over most of their lengths. In addition some of the cables had portions of braid removed during the steam / chemical-spray exposure. y_I - BEND AND HIGH POTENTIAL WITHSTAND TESTS The results of the bend, IR and high potential withstand tests are summarized in Table IV. l l l k-2 , 3
TOBLE III . INSULATION RESIST ANCE
SUMMARY
(8)(C)(D) (ALL READINGS ARE IN OHMS) (A) 49.3.2 49.3.3 49.4.1 ELAP5ED.TIPE 49.1.3 49.2.1 49.2.2 49.2.3 49.3.1 OR EVENT TEMP. PSIG 49.1.1 49.1.2 88 OHMS FOR 20 FOOT t E NC T H PRE-IRRADIATION 31*F ---- 3 2 x10' OHMS fos 850' LENr.TH nm 1.36 x 10 1.25x10 1.72x10 4.65x10 5 26x10'8 5.68x10 2.13x10** 1.36x10'8 1.16x10 1 36x10s: PRE-LOCA 68'F 0 1.46x10' 1.51x10' 2.35x10' 1.88x10 8 1.74x10' 1 98x10' PIRST PLATEAU 280*F 35 1.0 x10' 6.0 x10' 1.03x10' -------- 3 76x1C' 3.82x10' 4.17x10' 5.51x10' 5.25x10' 5.5 X10' 2.58x10 8 1 72x10' 2.69x10' SECOND PLATEAU 24 0* F 11 1.23x10' 1.19x10' 1.14x10' 0-5 4.9 x10' 2.2 x10' 5 23x10' -------- 7.4 x10' 7.45x10' 9 75x10' THIRD PLATEAU 215'r 1.21x10' 8.05x10' 7.7 x10' 1.03x10' 1.32x10' 1.24x10' FoueTH PLATEAU 203* F 0 6.0 x10' 2.15x10' 6.03x10' -------- 8.85x10' 1.12x10' 1.35x10' 1.26x10' 1.42x10' 0 1.21x10' 1.13x10' 1.17x10' -------- 8.9 x10' FIFTH PLATEAU 180*F 1.24x10' 7.5 x10' 8.0 x10' 7.8 x10' 1.76A10'
---- 1.86110' 1.88x10' 1.03x10' -------- 1.25x10' POST - LOCA 180* F s
t I ELAPSED TIME 49.6.1 49.6.2 49.6.3 49.7.1 49.7.2 49.7.3 49.4.2 49.4.3 49.5.1 49.5.2 49.5.3
)
OR EviNT PRE-IRRADIATIDM 88 5.48x10 5.03x10** 6.38x10** 2.48x10 2.42x10 2.44x10'8 4.42x10 88 4.38x10 5.1 x10 PRE-LOCA 2.17x10 88 2.21x10 8 1.63x10' 1.99x10' 1.33x10' 1.65x10' 1.1 x10' 1.83x10' 1.86x10' 1.77x10' 1.28x10' 1 32x10 FIRST PLATEAU 1.88x10' 5 3 x10' 5 16x10' 3.84x10' 3 97x10' 4.05x10's 4.16x10' 4.90x10' 1 99x10' 5.1 x10' SECOND PLATEAU 5.1 x10' 5.7 x10' 2.4 x10' 7.0 x10' 2.3 x10' 1.08x10' 1.14x10' 1.1 x10' 4.0 x10' 1.07x10' 1.26x10' 3.0 x10' 1.07x10' THIRD PLATEAU 1.86x10' 1.1 x10' 1.12x10' 1.1 x10' 3.45x10' 7.5 x10' 1.1 110f 1 31x10' 5.0 x10' 1.09x10' 2.2 x10' FOURTH PLATEAU 2.15x10' l 4.35x10' 5.65x10' 1.27x10' 1.36x10' 3.8 x10' 9.0 x10 2.55x10' FIFTH PLATEAU 1.33x10' 1.52x10' 3.09x10' 1.52x10' 8.3 x10' 1.2 x10' 3.6 x10' 2.75x10' l 1.84x10' 8.5 x10' 9.6 x10' 4.6 x10' 1.50x10' Posi - LOCA 1.64x10' i l i l NOTES (A) SAMPLE NOTED A5 SEING DAMAGED UPON RETURN FRON 150MEDIx. (s) MEASUREMENTS WERE MADE AFTER THE CASLE WAS HELD AT 500 WDC FOR ONE MINUTE. (C) NEASUREMENTS WERE MADE BETWEEN CONDUCTOR AND GROUND.
<as ,....,...., ...,-,.,r. ., ..,,n vn. ,.cr, ,xerpY wurN THF IR Hr A%H8FPF NTS 68ePF pa 9 hs l
TABLE IV l l SUtMARY OF MANDREL BEND, IR AND HIGH POTENTIAL WITHSTAND TESTS l \ POST MANDREL HI-POT POST HI-POT THERMAL IR AGING RADIATION BEND IR WITHSTAND SAMPLE OHMS 0 68 F REMARKSX HRS./OF MRADS OHMS TEST I NUMBER Unaged ----- 3.7 x 1088 Pass 2.55 x 1088 49.1.1 2.15 x 1018 49.1.2 Unaged ----- 2.9 x loss Pass Unaged ----- 3.35 x 1081 Pass 2.40 x 1018 49.1.3 20 ----------- ---- ----------- Damaged in transit. 49.2.1 Unaged Unaged 20 5.3 x 1088 Pass 2.25 x 1018 49.2.2 Pass 1.85 x 1011 49.2.3 Unaged 20 2.0 x 10' 49.3.1 Unaged 120 2.0 x 10' Fail ----------- d) (d QD Unaged 120 9.2 x loss Pass 4.0 x 1018 49.3.2 2.05 x 1018 Unaged 120 7.2 x 1031 Pass
, 49.3.3 49.4.1 168/210 20 6.7 x 1088 Pass 4.1 x 1018 49.4.2 168/210 20 5.65 x 1088 Pass 3.55 x 1018 49.4.3 168/210 20 6.6 x 1081 Pass 4.40 x 1011 Failed at 3.0 KV(AC),
49.5.1 168/210 120 2.35 x 1018 Tail ----------- Failed at 3.0 KV( AC), 168/210 120 7.4 x 1088 rail ----------- 49.5.2 49.5.3 168/210 120 1.3 x 10:e rail ----------- 6) () 672/210 20 4.75 x 1088 Pass 3.1 x 1088 49.6.1 Pass x 1081 49.6.2 672/210 ', 20 4.25 x 1088 2.9 49.6.3 672/210 20 1.17 x 10' Pass 5.8 x los 49.7.1 672/210 120 8.0 x 10' Tail ----------- 49.7.2 672/210 120 1.2 x 10* Fail ----------- Fall ----------- 49.7.3 672/210 120 2.5 x 10'
- Numbers in circles refer to notes on the following page.
NOTES (1), (2), (3), (4) and (5) apply to all samples unless otherwise noted. '
NOTES TO TABLE IV (1) The Ratio of mandrel for bending to the cable diameter - ; 8.0 inches to .200 inches or 40:1. . (2) The voltage applied to each cable was 500 volts DC for 1-minute for the IR measurements and 3600 volts AC for the Hi-Pot test for 5-minutes, unless otherwise noted. The rate of rise was approximately 1000 volts per second. (3) Voltage was applied conductor to ground (water). (4) There was approximately 8 turns of cable on the mandrel for each specimen. Each turn is approximately 25 inches. (5) All cables had chemical deposits on their surfaces. I 1 (6) The first calibrated point on the electrostatic voltmeter was 3.0 KV. Therefore the data is shown as simply " Tailed" if less than 3.0 KV or the recorded value if 3.0 KV or
)
higher. (7) For information on additional post-LOCA t'esting, refer , I to Appendix B. I l 1 l
)
4-5 l 1
(8) Specimen 49.3.1 was the only one of the (3) 49.3 series which was on the mandrel (See Table II) and in an area exposed directly to the spray nozzle (See TIGURES 5 and 6). For this reason, and by analysis, it is felt that specimens 49.3.2 and 3 are more indicative of the expected behavior. i e
-e ee I
t l l \ i 4-6
E. CERTIFICATION The undersigned certify that this is a true and accurate account of the tests conducted and the results obtained. 0 YY1r1/1.*b).
.hemist, hn HelwigIPEC () /
D. O. Bostrom ' Product Engineering Manager Anaconda-Continental W & C l i l APPROVED: l l h_ . O Ad r[fn P. 5. Cardello l Chief Engineer l Anaconda-Continental W & C ,' l l . l l 5-1
- e 0
APPENDIX A CERTIFICATION FOR RADIATION O
6 isomenix February 22, 1979 Mr. John Helwig Anaconda Company Wire & Cable Division East 8th Street Marion, Indiana 46952 Dear Mr. Helwig This will summarize parameters pertinent to the irradiation of a mandrel wrapped with LOCA cable samples, as per your Purchase Order MA37015-W dated January 11, 1979 requesting exposure to 20 megarads. The mandrel was placed in a Cobalt-60 gamma field in an upright position which paralleled the long axis of the radiation source. The mandrel was exposed at each of 4 quadrants as marked with a number at its top. By integrating the dose rate at any point on the mandrel during its 4 position exposure, an average dose rate was obtained which, when multiplied by the total exposure time, yields total dose. Each of the 4 quadrants were exposed for 9 hours at an average dose rate of .56 megarada per hour, yielding a total dose of 20.16 megarads. Dosimetry was performed using an Atomic Energy of Canada, Ltd. (AECL), Red Perspex system with Type BC-2 readout. Calibration of the Perspex is made by AECL using Caric dosimetry traceable to the U.S. National Bureau of Standards. Isomedix regularly cross-calibrates its AECL system with an inhouse Harwell Perspex system, and makes semi-annual calibrations directly with NBS, using the NBS Radiochromic Dye system. A copy of the dosimetry correlation report is available upon request. Irradiation was conducted in air at ambient temperature and pressure. Radiant heat from the source heated ,0the samples somewhat, but the temperature did not exceed 85 F, as indicated by previous measurements on an oil solution in the same relative position. loomedix 1,1c.
- 25 Eastmens Road. Persippany, New Jersey 07064 (201) 887 2006
Irradiation was initiated on February 8, 1979 and completed on February 14, 1979. l' l Very truly yours, est.us Louis Castaldi Ass't. General Manager , LCiat l i 4 t
' loomeadim ine.
- 25 Eastmens Road. Persippany. New Jersey 07064 (20 4 887 2988 .
I
I
. 40 r
L. e.m_.m.. February 22, 1979 , Mr. John Helwig Anaconda Company Wire & Cable Division
. East 8th Street Marion, Indiana 46952
Dear Mr. Helwig:
This will summarize parameters pertinent to the irradiation of a mandrel wrapped with LOCA cable samples as per your Purchase order MA-37015-W dated January 11, 1979 requesting exposure to 120 megarada. The mandrel was placed in a Cobalt-60 gamma field in an upright position which paralleled the long axis of the radiation source. The mandrel was exposed at each of 4 quadrants as marked with a number at its top. By integrating the dose rate at any point on the mandrel during its 4 position exposure, an average dose rate was obtained which, when multiplied by the total exposure time, yields total dose. Each of the 4 quadrants of the mandrel were exposed for 53.7 hours at an average dose rate of .56 magarads per hour, yielding a total dose of 120.28 megarads. Dosimetry was performed using an Atomic Energy of Canada, Ltd. (AECL), Red Perspex system with Type BC-2 readout. Calibration of the Parspex is made by AECL using Ceric dosimetry traceable to the U.S. rational Bureau of Standards. Isomedix regularly cross-calibrates its AECL a; stem with an inhouse Harwell Perspex system, and makes semi-annual alibrations directly with NBS, using the NBS Radio-chromic Dye system. A copy of the dosimetry correlation report is available upon request. Irradiation was conducted in air at ambient temperatures and pressure. Radiant heat from the source geated the samples somewhat, but the
- taaperature did not exceed 85 F, as indicated by' previous measure-i ments en an oil solution in the same relative position.
Irradiation was initiated on February 2, 1979 and completed on February 19, 1979. ' very truly yours,
- Louis Castaldi Ass't. General Manager LC:stloomedim inc. = 25 Eastmens Road. Persippany, New Jersey 07064 e (201) 887-2004 l
r L. isommoix February 22, 1979 Mr. John Helwig Anaconda Company Wire & Cable Division East 8th Street Marion, Indiana 46952
Dear Mr. Helwig:
This will summarize parameters pertinent to the irradiation of 10 coils wire samples asoper your Purchase Order MA37759-W ' dated 2/15/79. The 10 col-, samples were placed in a Cobalt-60 gamma field such that they received a total dose of 120.28 megarads at a rate of .56 megarad/ hour for 214.8 hours. The 10 coils 1 I were processed with the 120 megarad mandrel. Dosimetry was performed using an Atomic Energy of Canada, Ltd. (AECL), Red Perspex system with Type BC-2 readout. Calibration of the Perspex is made by AECL using Ceric dosimetry traceable to the U.S. National Bureau of Standards. Isomedix regularly l cross-calibrates its AECL system with an inhouse Harwell Perspex ; system, and makes semi-annual calibrations directly with NBS, using the NBS P.adiochrcmic Dye system. A copy of the dosimetry l correlation report is available upon request. Irradiation was conducted in air at ambient temperature and pres-Radiant heat from the source hgated the samples somewhat, sure. but the temperature did not exceed 85 F, as indicated by previous ! measu. aments on an oil solution in the same relative position. Irradiation was initiated on February 2, 1979 and completed on February 19, 1979. Very truly yours, Louis Castaldi Ass't. General Manager LCiat loomeelix inc.
- 25 Eastmens Road. Pa,sippany. New Jersey 07054 (201) 887 2646
9 8 0 e e APPENDIX B ADDITIONAL POST-LOCA TESTING 0 l e I
I - INTRODUCTION After the completion of the original work, on April 26, 1979, two of the cable specimens were further evaluated. II - POST-LOCA PROGRAM The cable specimens 49.3.1 and 49.5.3 were immersed agai.n in water, impressed with AC voltage and current and the electrical faults located. The faults were removed and the balance of the specimen retested after immersion in tap water at room temperature for one hour. The test run was as follows: (a) IR Q 500 volts DC. (b) Hi-Pot 0 660 volts AC for 5-minutes. (c) If (b) passes, then Hi-Pot of 1200 volts AC for 5-minutes. (d) If (c) passes, then Hi-Pot of 1800 volts AC for 5-minutes. (e) If (d) passes, then Hi-Pot of 3600 volts AC for 5-minutes. III - POST-LOCA TEST RESULTS A) Specimen 49.3.1 was noted as having one fault, approximately 40 inches from one end. The short piece was removed and the balance (about 6 wraps) See Table ratested in accordance with Part II. B-1 for results.
I l B) Specimen 49.5.3 was noted as having two faults, i j one approximately 6 inches from one end and the 1 other approximately in the center of the sample. l I The sample was cut in half at the center fault, l lf and the shorter fault removed. Both pieces, 49.5.3a and 49.5.3b (about 3-1/2 wraps each) were I then ratested in accordance with Part II. See i Table B-1 for results. l l l l {
^~
. .'1 TaDLE B-1 i
SUMMARY
O!' ADDITIONAL POST-LOCA TESTING IR AITER 1800 VOLTS AC 3600 VOLTS AC FAULT REMOVAL 660 VOLTS AC 1200 VOLTS AC 5-hit!UTES SPECIHEN 5-HIfiUTES 5-flINUTES 5-flIIIUTES OllMS NUMBER Pass Pass Pass railh 49.3.1 1.28 x 10 ' 8 Pass Pass Pass 49.5.3a 6.4 x 10** Pass Pass Pass Pass 49.5.3b 3.85 x 10 Pass
@ Sample failed when voltage reached 3600 volts AC.
9 e
4
- 4 4
e APPENDIX C ANALYSIS e (
AllALYSIS - ?!ETHOD 1 Elongation is properly regarded as the most critical dependent variable in the evaluation and performance of elastomeric cable insulation systems that are further cross-linked by radiation. The independent variables of prime concern in this study are: (a) Thermal pre-aging (time and temperature). (b) Radiation level. (c) L.O.C.A. (steam / spray cycle). Since the LOCA steam / spray cycle was fixed and applied to all test specimens it's effect is considered a constant. Data from a previous study, completed 2Q, 78, on dumbbells cut from ASTM slabs, established the relationship between radiation exposure and elongation (FIG. I) - and . between thermal aging and elongation (TIG. II). We therefore can analyze the relationship between the independent variables of radiation exposure and thermal aging. Anaconda-Continental Report NO. 79117 shows that under conditions of pre-aging for 7 days at 210C, 126 HR plus the steam / spray cycle the test specimens at rated voltage and current operated without problems. After the post LOCA 40X bend all specimens passed a 500 VDC insulation resistance (IR) test, and came within a few hundred volts of passing the severs 80 volt per mil dielectric test. These tests also show that under conditions identical to those above, except with a i i
radiation exposure of 20 MR, the test specimens passed the 80 volt per mil post-LOCA bend and dielectric test. It can also be noted that IEEE-383-74 considers the post-LOCA bend / dielectric test an indication of margin - not necessarily of required in-service performance. Of course, cable procured i
- under the contracts in question, was made some time before the issuance of IEEE-383.
It must now be determined, by analysis, that value of retained elongation (with margin) that is required after a given thermal aging cycle, to pass a given set of normal plus LOCA environmental conditions. Refer to TIG. I, Plots A, A', AE and AE' (the same i l data except A and AE uses an expanded elongation scale). i AE and AE' is an extrapolation of data between the 0 radiation value (original value of elongation) and the 50 MR value obtained in the " slab study". The expected value of elongation at 20 MR would lie in the shaded area bounded by AE', AX' and the X axis. The line AE' therefore represents the most conservative possibility in this analysis. The 20 MR value of elongation 1ying on AE' would be 220 percent (i.e. the maximum value of elongation that may be retained). Let's now assume that as much as 220 percent retained elongation, after an unspecified thermal aging, is required to pass a given level of radiation, LOCA (steam / spray cycle) and the post-LOCA bend / dielectric test.
FIG. II, point 1 is the 210C, 120 MR intercept and point 2 is the intercept between 220 percent elongation and tha thermal aging temperature (for 7 days) that is expected to yield 220 percent elongation - that temperature is 175C. FIG. III, plot A is an Arrhenius plot of time to reach a final value of 50 percent elongation. Plot B is a parallel line drawn through the 7 day (168 Hr.), 175C intercept. 7 days at 175C is more severe than the pre-aging cycle normally used to qualify organic (such as EPR) based polymer insulations (plot C is a typical example). If the assumption of a straight line characteristic parallel to the original Arrhenius plot is mada, plot B intercepts the 40 year line at approximately 1100. e O
n _ . _ _ _ ..c. .. _v __.. _ _ _ _ . . . . . . .... .....;.._._ i.___. ._ . . _ _ . . . _. _4 .
.g.. .. .. .1_ _ _ .
9... =
.6 .6 . . . . . . . . . .
. ... l . . . .. . . . . _ . . . . . . . . . . . . .
. . ...I . . l.. . . . . . . j ..... .
.a..._m g .
..g ..;.... n.. .... . _ . ;....
.. . . ... - - 4-.--
..q .
.....,t----
.. ._ . l... . _. .. . - _ . ._ -- ,.
. i . . . _ _ . . . . . . .. ..&.... . . .g
. . . . . . ....... .. .i ..
t
. .. .,,.s .
. . e..
. e .
. p .
-. ..o . . .. . . , . _
4 .. . . . .
.. . . e . . . .. . .
.g .....
i
-q_ . ...
... . 4 . .
_...W. . . . . : . . . . , . . . . _ . . . . _
,e . . . . _. . .
%. g
.y ..._ . ..
. .... ___.4.__
--(.) . .. . ..
..}_...---
. . . . ... ... . . . . e .
~ - =
1-----'----- - -- - - -- - - - * * *- d y o.- . ~- - - - + - - .. 4 . . . . . . . . . . . . . . . .. .R. . . . . . ._ . . _. . f' s. . . . .. ..p .. .
. . g.
....3_........_.
f.
- 3. ;. g......yn 4 . ...,7......._._
. ... . . . . .. e. . . . . . .
%.#. . . . . . . _ ... _ _ . . . _ . . . . . . _ _ , . . . . l . ..
._..l......
..g.... . ... .
.~
_ . . . u . . .. . _ . . 4. m 1 _ . . _ _ . . . . . _ . . . ..p ... ..3._... . . . . . . . . . . _
. . . _ - _ . _ . . . . . . . .....!....... .4..... . . . . . ...g.... ... . . ..
m . . .. . . .. _ . _ . _ . _ _ . . . . j i.._..... . .. .. . . . . . . .. ...,.._. ...
. . . _ . . ., ..../.. .m. . g . . .'. .,3.p.%........ ..
j
.. .. s....... ..._....
. .....t._ .
2 _ . . _ . _ . . . . ._ . . . . . .. . . 3..... .
.h _
l
\a . . . . . . .. . . _ . . . . ~ . .....- .... .+ ... . . . .' l. .h ...Q .... . .
l l.. . . . . . . . . . . . . _ . 4_.4.. _ _ . _ _ _ _ . . _ . . . . . . .. . g... .. g04.-- ' _....__
._. _j.__ ...__9
. - . _ *t . ' _'
l_................... _ _ _ . . . . . . . . ... . ., ._.....____+_..
. n. . . .... . . . . . . . _ .
4, i_...
. . . . . . . .. . t..._ _ _ . . _ . . . .. . .
...g......_
ir 1..-----............ .-----L----- +-----
-- /.A- .
- -- W - - . _-----
h
...._.._.,....r
*3
; t...
. .. . . Q . .% ...-..,e.._---- . . .. .
._...1,.._.. .._..I._.
C... g .. .., .
.i . . . . . _ _ . . . . . . . . . . ..._ _._. / . .
- s.i . . ...
_ . . Q . .._a
..4._.._ . _ . . .
... 4w - - . . . _ .. .
._ __4
. *g.. . -b., ' ..._.W._.-
3
. . .. u . .- _ . . . ..
4 . ... A_ _ _, -... , . ..... . . . , _.. . . . . . . s=*
} .- 1.
_..._4__..6~.,,,---Q- , ui
.t.. ,-._-.-F..-.. ....-...F-.-.-
. _- _--_ _...q
. . . .. . . . ~ . . . . . + . . .
....6..-..
. . . . . . . . , . 1%
. ... - . . . . . . ..... 4 p. . s._. ..
. , . .me. . __.....
.. . . . . . i .. ..n......,_ , . . . .
. . . . . . . . , . . .-. . . . . 4 _. . . .} ..w.....L-. 4....
.. .. _.. ....; . . . _ . . . . _. j . . . . .
..,..._. . . . . . . . . ._.p.... . .
{. _ . . . . . _ i _..e.. l
. . .. .. .. .,t .. _. _.. .. . .. .. .... .. . . . . . _
.....[.
...._ 4.... ....
....).
. . . . . . .. . . . . .- .... .4.....
l.. g... ;. .. . . . .... . . .. . {..
... ..... . . . . . . . . . . . .. . . 4,...
6, . . . . . . . . . . . _-..4....
. . . . _ =.... . .... . .. .. . . . .. . . . . .. . . . . . . . . . . . .. . . . . , ,
.._.4
. . . .. . 1 . . . .. .. . . . . . , . . . .
j . . . . , . . . . - . _ . . . .... ... 1 . . . . .. .. . j.. . _.J.... ... . . . . .
. . . . . a. . . l1 . , .
.. . . . . u .. . . - . ,. . .W.. .. ..... . . . .
-. . + . . . . g a l
. _ . . . . .. . . . ;........... . ........ . . . . . . . . . 4 .
.. . . . . . . . . . 1. ....
_ 4.. . . . ... . .. .. .3,...
. . ..- . . 4... .....J.. . .. .
. . . . . . , . .. s . e
....J. * . . . ... . J
... 4.. . ,. . . . . .
1- _
.. ...... y .
....9 .... . . . .. .., ..
....g.
.. ... l t
. . . . . . . . . . . . . . {. ... . .,....
W ... .
.. .J... . . . . . .
....._..s. . . . _ . . ... .. , _ . - - . .
. . . . . . . 4.. ... ,
. . . . . . . . . . . . . . . . . . .e O .. . -. . . . ..
l g .J.... tQ . . . .3......
.. .. . O '
4, ....4 .... D s 4 q g .....(... . . . ...
. . . . . . ., g ...
. 4 g.. .......l.. . . . ..
. i 1
_.........q . J . .. . '.. .
...... . q. ....
g ...... . . .... . .... . . . . . . . . . . . U ...... ..
- g. ... . . . %d . . . . . . . . . . . . . . ..... .
g . ;
.._s.._.. ......J....._.. . . . . . .
. O ... _... { ..... . .... . . . . . . . . . . . . . . - . . .. ......., . . . . ......Q . .
C,,', . .. ...
>: . . . . . Q- . . . < .. . ...
6.., .i.. .. .= . . - . . . - - _
...q........ -
C }.........N...._.., N ,; [ m) ...........e....._... . . . .. . . . . . . . . . . . .. .. . .
.- .i . .
R4 . . . . . . - ....4 . . . . . .
%3
....4_
.. .. . ....4.... . ... ..,. . . .- .......... . . . .
g w..Q .
- . . . . , _ . . _ . ...__a. .. ._
_ . . - . . . . . . . . . . . . _. . . - L ._. . . . . .. - .s. i
..a......
_. . ... ... .... .- 1. . . . . .
. . . . . . . . . . . . . ...3... . . . . q. . .
j _ .. ...... . . . . . . . . . . . . . . . ..... . . , ..._ ...q ... . , ... .. U. l.
. . \
......s .. .
.j
. . . . . . . . . . ..... ... . .. ..n
... . . . . . . . .. . l
. .3 ./ i . . 4
......<..j.... ( 4 ... . .J.. . . . . ........ ..
. . g I
e . . . . . . . . . . . . . ... .. . . . .. . . . . . . . . . . .....;....] .. .. . ... r, ..-........
.-.-..Q.-.-.< .
at . . . . . . . . . . . . . . . . .. 4_... 4.. . E 4 .-.......
.. . ... .. . ....4. . . . . . .
%..',. -m 2
. . . . ... i . . . . . , . _ . . . . . . . . - . . _ . g .}
3 dj . . . . . ..
.. . . ..7....
t
,2 3. -_._._9.......
1
. . ... ._... . . ... ...4 ... . .....j-.-.. ..
.. .. .... . . . . . . . ..... . . . . . . . . - . . . .J*
c. e .r *
~
.......~..
.~~~
*w g,
O. .._......."'
- = _
j- . _._ . M .. .. o
, O.
4_ -
- 7. . . _ . - . _ . - . _ . .
j
. __m. .. _. .. .. . . . _ . .. .
h - . . . . __.4 -. i i w. ..... . n , _ . ... ._ ._ . . . . . . . I _ _. .... .4..._ g _ _ . 7. _. . . _ _. . . . _
. . . . -j_ ... ... . . . _ _.. ... 4.. . ...4..... .
. ... . .. .. - ., .. .. . . . . . J. . < . . . . . .. . . _ . ....
_.;....._, .. 4 . . qp. . . . - . qi... . . . . . . . . . . . ... . . . . . . ...3..
-O.
._ _ ,..._ __..4,.. . . . _ ... ...,.
4.........
'... 3
. .. . L. .. .. ... _- . . .;. 4_
.. 4 .J.,. _ .
9.. . .. .. .. g. . ... . i ,
. _ . . N _ .....4 ... . . . . . .
4... . . 3..... .. .
. . . . . _ . . . . . . . . . .. . . . . . .J,. + . . . _ . ..... f
,.,,. ..... . . 1
. . . . ..4.. . .. . .. .. .
.j.4 . . , ,... . , . .
_ . . . .. . . . . . . . . .- . . . . . . . . . ......,s..... .. .<... 3.. _ L._... . . . _ . . . . . . -
...-.4.... .... j...< a ... . .. .. . ... . . . -. . .
a....
- -. . . . . .. . ... . . . ~ .... . . . .. ....<
4 .. . . _ . . . . . , . ......3. . . . . . . . + . . . .. ..... g
- . . ... _...< . . . ..... ....- 4 ,. ...
I
. . . .. ;.... ... ..... .. ;. p........j.... . . .
~. e . _ . . . . . . . 4
_g _. _. .M_. r . . g . .% 66
+
- q : _.q_, p. ,
1 l I
i 10C*3 .... ._..;... _ .....I_ .i ... . . t
. .'. .. _. ... /GVgE =fy7
,-; . . . .J. .
. . - ~ . ~ . . .. ....-.;_.....s........--.
1...... . r
. _ , . . _ . _ _ . _ . . , ..._....q.__...
._ . . ... 9p . . . _ . ; .. .. .. . . g i
- L - -- -
C
. . . . . . . .: t. .. . . . . . . . . . .
I __ 4 0 W S. 4 - f*
...... . . . - . . . . i _w .j. .
i.
- I s I i l 6 l
.e
**. 6 I .
.g .i '
;'... g..
' I l l l ,
l 8 i . l ' l l
. . L_...
i ....e. . g . ..
.t s
i ..a_l . . .... e
- w. - . . .,- _ . . . . . . . _ . - . .
n e. , . . . ., e.4 e s..J. ......! . . . q . 4 . .. ..
.. ..a .,
.g a ;
i
.. . . ..) . . ...I l ,
#00/08 _ .. . _ . .._. .. ._ .. .-. ..
'.._ _. ......_f..._ . . .
.. i.
. .. . .1
..._._..4.. .. 1. . , . . _ .
. . - f, .; ..
7 i.
.; i . g.
. ......q_...3
.j J., , ,. 3 ..f . _ . . j_ . ._. .;.. j.. . .. i
- a. . .-
...J...... . . ...i l .. ..8 ..a. . .. . . ......a. ..
.,. l s
, . u t . , -
t s t p - .
...j.. t j a l ! t .4 .l......
.l.6I..
4 l ,
... .! .- 4 ., .. . -. .
. . ._ t e i l'
_ - x. f l l *l ..6_* l l.
...... .l... .!
., .... g
._....) .. . . . . .
.e ..
..t. .. . . . 4 q......I.......
. .I. .,g ..
, .e. 1 ..
; . .1.. . . . . . l.
1
.4
.o ... . .
6
. . . . . ..) .. . . .
i m3 pop .
^
-~_
... . . . . . . . . . . ,.......g I
._. .1....g... . . . . _ . . . . . .
t _ . _ . - . g . . . . . . _ . . . .- .
.L..a ...'...
r . . . . .. .. . . . _
. . ...l........ g T. , . . i l
}. . . g . , 4. . . . g . =_ . _ . . . . .
- 6. _ . . . . . _ . . .. ._. ..,..t ...... ..
.)
) e. ....t.
..........I i . .,- .
. i. .! l .
i i t l c, :- i . . i ; l l i. _- i
.. .i.l. . .. .e . . . . . . .. .. .. . .
l t : . I
-6 l 1.. . 61_
. .... .. g ...
, a l
...; _. g..{ ..._
.l l
. .j * .. ..- .-...- * '
. ..*. I..
--*
- g '
..;.. .I 1*
' 4
. .. ._ ..... ..; - _' .. ... =.1..._., . _.. ._ _...._.l.......
7 ,
.. I
.. . 1 . . . -1. . 1. _ . . i .._.
s, ,..o 1. 1 .. ,
... - 1. . '
j..:. . . . .
.,3.q .. .M. .. . ..{ ..
. _h_ .'."J . 9 .{..__-._.,..e,._- ,;
- p. .
...4.. . . . . . ,
g, g,, r .... ...... . , Jp.g m ..
- 1. _
- a ... '
. . . . ' . .I. .
g: .._._
- 1. .. L,_.
I *
. . .. . 1 ij ; . . . . -
e ' *-- '- *
- 4. f. ..,..a .. , . .
.t. - .. ...
._- ,...f; s
y[ ...
.;..:.. .f .:...;.. .. l i
- e. af, ; , . i r . ..
...;... 3- ; ._ ,
L, . ;. - ! / ,- F '_'_ ._ _ l- - l . -l - [ .
.._4 I- ,
. .. t . . .. I,
. .. t .. . . . . .
se t e. . e. . . g' . t . . . . .... i l._ _ . l _. _. I -- ! , l
. i
_! _ _'.i_. ... . I _ _ . _. . l -
..[.I p i II*. j-1 .. . . . .
i i l t i l i I i l ..
] _ . __ _ ;
- e. t i i s .-
. . . s.
. , .= _ . . .
.. . . . . _...,i . . . . - _ .. . . . . _ . -
. . .l. . . . . .
t
. e .
- 1. . .
. ' , , , . I. i . . . l i l '
gg6 isJ tw 14.- 1sJ IW Gs
- M 24. 460 24 i.s 2ss 9
*C - n SCALC
ANALYSIS - METHOD 2 Using the " Rule of Thumb" which states that a chemical reaction rate (such as oxidation-reduction) will double for each rise of 10C; noting that the " standard" Arrhenius Plot for silicone rubber approximates this characteristic; and also considering that the 210C aging temperature appears
- o be a threshold value, it can be shown that:
A.ing P Temperature Safety Factor 210 0 200 1-2 190 2-4 180 4-8 170 8-16 This analysis supports the conservative nature of the 175C aging temperature derived at in Analysis - Method 1, and suggests that a 190C aging cycle is well within the capabilities of the material under study.
.t
1 ANALYSIS - 3 HIGH TEMPERATURE CADLE A few items were designated for service at temperatures above the norm. of 500. TVA was supplied our CC-2193 silicone rubber which had an additional heat resistant system (Anaconda-Continental designation HRSR. TIG. IV shows an Arrhenius l comparison between a general purpose silicone rubber and the This data suggests same compound employing the HRSR technology. l an additional 25+ degree thermal capability for these materials. Referring to TIG. V, if we again assume straight line Arrhenius plots, the thermal only (no radiation or steam / spray l cycle) extrapolation (to 40 years) is 175C for standard CC-2193 (plot A), and around 200C for CC-2193, HRSR (plot B). Based on Analysis - Methods 1 and 2, plots C and D define the area bounded by two linear extrapolations from 7 day aging Point 1 is the average of these temperatures of 175C and 190C. plots at 40 years or about 115C. An URSR material could be expected to intercept the 40 year line in the range of 130C to 145C (plot E). This is not unreasonable since this plot
*t l
' crosses the 7 day line at 210C which was the " threshold value" for non-HRSR material. 1 i i
r - If the radiation exposure is limited to 20 HR and no LOCA capability is required (the pressurizer heater application?) , th2 intercept would move up to at least 150C. (Report 79117 showed that all single conductor specimens survived the entire . test program when aged 28 days at 210C (point 2) and subsequently exposed to 20 MR plus_the steam / spray cycle.) See plot F. Eliminating the steam / spray cycle and allowing for intermittent service would indicate a correspondingly higher temperature index. 9 0 1 e
a.
; - lGURE _LV i
1,000,000..-.... .
..a_..
.- .- ._. ...: :_4 . . ,2 .. -J . 2 .3 ... .. --.
. . , _.4 ...-.
. __._a.____ _..._.. .. .,._...
_ p. .
. . , . . . . ._a _ ,.. .. __. _ . . . _ . _ _
- 4. . . i . . . . . . s . _; .. . : ..
_a_a _ ,;. . : .a . i...i. . ._ , q.a.4,.
,., , . , , , -r- _. 7 if
.a, . . . . .
.- l
; __.- -i - -
40 YRS.
. l, . ' I .
__.._l . .i .._,t__. . l --4,
.,f _ .'. ,) a . .i__
' ' ' l l l
,' nh)L. I_bP'. $1LJCO ' ._$U822$_._ .2__. .'.1.__ ..,. ........_. ._.m_._... : _ .
.'udsd.'L%h
- I .T. . .
._.- . = . . ,.C, C.' ..2. TIS'.,_.Z
.x :
. i I(o'..._.._._ .. _ _ . _ . . . . - . . . _ . .
1 ._.__gC._.. 4 210. g...
..,.. ...,.._. _.,_.n. .,._... .
__.,_4.......i__._,_._(..____._..__.._. ._._, ._. ._ .. . . . . . . ___ _ . .m _ ._.__.. ._ _.
; __, . .g. _.
__q .. . a -.' . . _ ; _ __' , __z-
, _.4 __
~~
'~ _ . _ . .
~~.~._",--~~~ .
l 10 0 ,0 0 0'g~ . ,' .. P'.~_~%_ . , . . . ' _.._._4_
.....,_._......._.v..- _ r_ _. _
._ q.f _ __4. ..a_ py: myygg... ... . __.__4-._....___
u . ._a . _ , _. , - a - _. 1 - ._;.,_.. _ _ . _ _ . . . _ _
. . . . , _ .__.a-, p . ,_ -%.'*4~;htWO . - _.RTn3at~
a_.; _4_ l i.i.-f- ----i-/ -- l i _ . , _ _ .9_ . I .. . i , t i i t I i # # f6 t : l_.I I 8 8 I i l ! I , I i l t i :) i I l 1 l
..g"._ _- ___._ :_ _ ., ._._, . ._r -
_4. . _ ==.
. . . . .. .. _m. : .:_.. _:==:.. _ ... . . _ _ - -
-_ - _ .___.s_._-_._ _ ..=._..
__ =_.:.
. . . _L_= . . __ . . . ..__ . . . .
_.g__ _ ._. _ _ _ . _ . _
. _ , . _ .__., _ a __._ _ 1._ _ ;_ _ _ _ _ _ . . . .
._.4,
_._i.._.__ .4. . ,___.,._- _ _ _m__ _.___.____- _ _..__.-...m...
- / _._ . ._
i 10.000 . _ . _ . . , . _ . _ . .
. . . . . . . . . . i.. -a.__
I. . . _ ... _--_f_., . _ _4.. ... ...,__ ___ 4__ _ _--..._.__ . ._
..f -- ..
._.._9.,_..--.
' p; -: m __ ._ ..j .a __ _4__a _
n . . _s _ ._s* _. n = _.
,, T _ g',,,g J-e
'I-C ' '
' 6 g,,, ,,,,) ,
4 _ . - _ _ 4
- 6
. f e i M.
q31 .
. , l i
' , ' 8 9{ -
l t l .
'.I ,_1l ( l _6 l l t 1 I
e e . .. - l l l!l ! \! l l l \ ! lI l8 i
,. l 1 l l . _ . _..._ _
w5 I, _. _~ --
,.. _ ,._.,_._ . ._ ...._ ._.e - _ _ -_ - .--
6 e y _ . . . ._. , __ yg , ss .,e. _.._-f._.<_-
, _ . -1__._.*.=
%_ _ (
_J 3 4
.',.:... u_
t . . . . . i l ko7.1,000. f .._.'_ .. _ . . _ e
} . .q. 3... _ f._..- - _. ._ . _
. __.y .j_ ---. - _ . _ . _
q I,;I, f.= ----__.._..----.__.._
,f __
i w m .,,-
.- i -- -
. ; - - - ~ .
-i- :--t-- --; , i yy -F - i . _ - '/- s s e i i .
r , I_> 6 _e i
- , , , i i
-- [ 2. :._L. _. ./ . . i i , _i___..__
i e i - .i. _.j_t_.L L _.____ . _._t -- i iii ti_!.
. I i . t !-
i l_ i 1
'. . .l lli
.=i..
- :-=>_-=. _ , . . . ._ _ .. _:
;_ :. _.- .._._:..:_...=.,..3 3o ,,73
= .. . . .._._.
. - . . .....u..._ ._._--r =.. ._.,_=_
.. . _ . . _ . _.. u. . . . _ . . _
i.__
...._._...._-..'.7..__.
.. ......- __.I~.__._.._.a._ __.
e_-__.j_-_
.__..i_.._._._.__.
)
i j
-..._... .,4 y..;_y._{._ 4 4 .' t .' J3 2;J F.3 tt3 I C *J 143 I0 IC)
J.J &l; &(a 24& em e.rature, S . A L.E
9 __
.....y .
... 4. . . .F7C,URt. . _ y 10 0M
-._........{.....
. .w. ..
. . .9 . . .. g ' 5. - D C 3 l, . . . . . .
. .l
- l 1- l .8..
1 . 1
' * - e .. .t.....' . . . . .
.mn-
- .'..).
J"i;,6. . s .3
/ ./. ;- -. / .. - .-
/
e.
- .l . i
.f e
.If !
._] _ .l .
I i I I
/. . ,', . ,. i_.,l_ . _ . . .. ....
_'__ _ __.....,'__. ,I:s. . _i . . ,
....i, .
.. . . .. . . ~ ,_
. .I f.
i , _.~ , . e, .
. . . .i.
i
- l. . ; . .i
. .. .I.. t 1. . . *
. .4
.I i . .
- e
. .6.
' .f . / .l.
(00/:M i . [. . .. . _. : _.[; _ ; - g__ , J, _ .... ;.. J ~~ , . . . . . . - . . _ - . ..... 7.. _ ... l~ .. . ~ -
.I,
. - . . . . . .1 .....I.
.6
- 7 . ., .... g .- .
_...a-.
. . g 4 .
. . _] .4....a..
L 4 - --/ . .-
.i . . _ J. ._.. .f.. ;.. .. .:j _ ..
.. i I . *. _J.. ..J4...'l.. ... .:. f, . j. J.1/..a g
j .i
' 8 9
i { . ._l . 4
-l .. l - .
_.-l . g .
..,I.,. . _ , .. -..' . .. j . . ,
~ '
.I ' . . l. .e.__
I I I } l l l ,....,!._ f e i , i : .- / .ti /_p*.. _ i : M
- I ii . ,.1 f r. .: ;l.- a
. -j. 1. - ; '; ..q.
i .d 9 -
. . ./ .; : . .. _ .< . .. ... , - _ . . . .;. . . _ .. .,. _. _ ..
~~A._. ., . g
} s
.,. .l. .. s*.. . !
.j. .,..i..
/.. .,
g. s f * .. f .f
. . l l .
is soc.- .I
. . . ;._ m _. , .
a. 3., . .; .. _... .. ... .f .
.4....._..... . . . _ . . . _ .
.. {-
.4..
'..8- ._- . ..
.g. _6 , I,.
l -J . . g_- ! ..
../ i. 3 . . , * , ,
,f . - , . . q. . ._.at. . . . . . . . . , '
/, .
*d
.... .. I
"* . L, . f .s . . ... -. ,
r; . J l .. ..,l ,- i l L. . .. .
~l. . . ..
i I i . I
. s . . . g i .
4 =
. i a
.l. .
. t e, - ..i., l. . i
.l
.'> .p t i l r
!* ' I l
' I I l 1 l . l__ -
. . . ./ .l / .l
..,/7,_....._.____._. . ;; ,
.. __./ . . . [; ........9, .f.
4 3;, s . s .
., 9 t ...
. . ~. . ,
a, . -. _ .w
). i . ,.
., 1
. ..!..t...
.. ; . . i ...
..I .. I. ..l . . . .., . f
. . . . . . . _ .... . l ... . .. ._ , .
. ..j . { -. ... .
-,.4 . '~
, , .. i... ... m..._.__ _ , . .
,, k ; lCO,,
. f g_ ~-f .. j .
- j. _-_ . _ . . . . . _ . . . . .. .
u
- W ;./,,J s.. ,J.
a' .. , .. _'. _ . . . .A_.'._.._ _ -- . ,
, i, ; . .. JM. . fI- "1;.: , . . . , .4 '
. . i . . ., f ._f , . . , . . . . 6 -+ --- .
.,.,..,f .
.4...,' qjq. _-_.4... _ . _ .
. . -- t . . . . ] J ,.. .,..
d,
. ..i ..
- 8
_j.. . g- . L /...i.. [ .i. <
. ;_ t /{_ - .l . .y .J .L j .. .
t
. : i a t 4 ,'1 .,\ .! -. . ... . . .. ..I .
.I. ., a I s ....o.s i . e i
%= . t. l . . .
- 1. . .. ..
f
..l/ g 4.. . - g. _s s . .
f
- g. ..
.t.'. _t. . - r . .., _ .,
p
- 1- .
- 1. l
,f i. ' 3 i ' .
- [',!/ .
._ / . .1- ' -. ... . _
.'l .; ;
- I I i f2 . . ' . '. . . . j .. ..l.
e .-
- s. I .. .
.i ;
.p
}.
, . .. ij .[...-.. . ,. - - . .
t W
, t... -f f _4 .
/: . -
120 luO e' J L .' , 20 200 800 IG Id0 EO 283 260 240 C ( h SCALf.) i f i
' 1
\; ' . . . . .
f, ~; l I
'I ANALYSIS - 4 I CONCLUSIONS Based on the analyses used in Methods 1 and 2, it has i
l been shown that linear extrapolations of lines drawn parallel ki j ' to the previously determined Arrhenius plot, and intercepting {! the 7 day (168 Hour) line at 175 and 190C define the operating
- af .
,I envelope of the cable system under study and intercept the
.r
?, "40 year" line at approximately 110 and 120C (refer to TIG. V, plots C and D). These plots include the effects of a 175 to W* t j1 s
l [j 190C thermal aging cycle, an exposure to 120 HR, the steam /
spray cycle plus the IEEE-383-74 post-LOCA bend / dielectric k, test.
f. I In like fashion, Analysis - 3 indicates a "40 year" l
,f- intercept of between 130 and ISOC and a 20,000 hour intercept I
- l. (a standard wire and cable benchmark - approx. 2.3 years of l
continuous conductor operating temperatures) of between 160 i and 175C, depending on the limitations put on the independent variables. I 1 : ' l The additional margin accruable to what we believe are
; conservative analysis techniques, test steam / spray cycle l
' higher than postulated and that built into the IEEE-383 post-LOCA bend / dielectric test - especially the high level of the I dielectric test should also be considered. l. l '. l I l i ____---}}