ML20080F805
| ML20080F805 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 01/26/1995 |
| From: | Saccomando D COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9501310148 | |
| Download: ML20080F805 (10) | |
Text
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- [^'N Commonwealth Edison j ( ~
) 1400 Opus Place I
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J Downers Grove, Ilknois 60515
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' J$muary 26,1995 Office of Nuclear Reactor Regulation U.S. Nuc' ear Regulatory Commission Washington, D.C. 20555 Attn: Document Control Desk
Subject:
Braidwood Units 1 and 2 Environmental Qualification Of Okonite Tepe Splices NRC Docket Nos. STN 50-456 and STN 50-457 References 1.
Ramin R. Assa letter to D. L. Farrar, dated September 8,1994, transmitting Safety Evaluation Report on Okonite Tape Splices 2.
D. M. Saccomando letter to W. Russell, dat4.1 April 15,1994 3.
D. M. Saccomando letter to T. E. Murley, dated January 7,1994 4.
T. W. Simpkin letter to A. B. Davis, dated November 21,1992 Reference (1) transmitted the Nuclear Regulatory Commission (NRC) Safety Evalur. tion Report (SER), documenting the review of the Commonwealth Edison Company (Comed) submittals in response to the NRC Unresolved Items 50-456/89018-04 and 50-457/89018-04. The Staff has concluded in its review that the submittals (References 2,3, and 4) have not demonstrated qualification for submergence of the subject splices during the postulated design basis event (DBE) at Braidwood Station.
The primary issues raised in the staffs SER focus on two points. First, the tests that were performed did not subject the splices to the entire test sequence and secondly the splices were not fully submerge during the DBE.
j Comed has carefully evaluated the above referenced SER and respectfully disagrees with the conclusions it draws. It is our request that the staff review the following information and reconsiders the conclusions as stated in the SER.
" Attachment A" addresses the issue of sequential / partial test data and explains the basis for our beliefin the adequacy of the Okonite splice tests that were performed.
" Attachment B" addresses the issue of partial versus complete submergence and contains new materials information regarding the splices. We believe that technical information regarding the Ethylene Propylene Rubber (EPR) material from which these splices are manufactured, shows that the extent of submergence (i.e., partial or full) is irrelevant. Polymer research has shown that the diffusion and solubility of I
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7 water into polymers are not significantly affected by the water's state. Therefore, the concern that a flaw above the submergence level in the splice would go undetected by the current test program is bounded by Comed's existing program.
Lastly, Com Ed has considered retesting the Okonite splices to address the concerns raised by the NRC staff. A new environmental qualification test, which includes full post accident submergence, is currently estimated to cost between $70,000 and
$100,000 to perform. We believe that the cost of performing another test is not justified given the marginal safety benefits due to the configuration of the splices in the field. Specifically, Braidwood Station has some splices installed inside junction / pull boxes in safety-related power and centrol circuits. Splice installation locations and box configuration make it unlikely that the splices will exist at the bottom of the box. Even if some of the splices are located at the bottom of the box it is unlikely that the full length of a splice (particularly a V-type) is lying flat against the box bottom. Furthermore, it becomes more unlikely that splices in redundant circuits are all configured in the postulated worst case condition.
We request that the Staff review this information and welcome additional communications with the Staff regarding this issue; specifically, we would be pleased to discuss these matters in a technical meeting with NRC staff. Please address any further comments or questions regarding this matter to this office.
Sincerely, h
Denise M. (accomando Nuclear Licensing Administrator Attachments cc:
R. Assa, Braidwood Project Afanager - NRR S. Dupont, Senior Resident Inspector - Braidwood J. Martin, Regional Admhistrator - Region III Office of Nuclear Facility Safety - IDNS k :rila. br dwd c4 r es wr f ;2
ATTACHMENT A PARTIAL TEST DATA To address the issue of not subjecting splices to the entire test sequence, Comed believes that the environmental qualification requirements have been met because 10CFR50.49 and NUREG-0588 allows for the use of partial type test data, i
10CFR50.49(O states, in part:
"Each item of electrical equipment important to safety must be qualified by one of the following methods: (1) Testing an identical item of equipment under identical conditions or under similar conditions, (2) Testing a similar item of equipment with a supporting analysis, (m Experience with identical or similar equipment under similar conditions with a supporting analysis, and j
(4) Analysis in combination with partial type test data."
t NUREG-0588 Category I states the following and provides the proper context to determine the validity of the environmental qualification testing:
Section 2.1(4): "For environmental qualification of equipment subject to i
events other than a DBA, which result in abnormal environmental conditions, actual type testing is preferred. However, analysis or operating history or any applicable combination thereof, coupled with partial type test data may be found acceptable, subject to the applicability and detail ofinformation provided."
Since 10CFR50.49 and NUREG-0588 allow for the use of partial type test data, Comed continues to believe that the testing performed met the requirements of the rule and demonstrates qualification.
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ATTACHMENT B SUBMERGENCE ISSUE With regards to the issue of submergence, it is Comed's understanding that the basis for the Staff's conclusion that submergence qualification has not been demonstrated by the submergence qualification testing results is that the splices were not completely submerged during testing. The Staff stated that the unsubmerged portion of the splice, as modeled in the testing, may contain a flaw that would exist only in the non-submerged portion of a tested splice specimen and would remain undetected. The Staffindicated that these flaws had not produced test fhilures, because the leakage current-to-ground was less when the flaw was not fully subm2rged.
Comed believes that this position is not supported by the known cable / splice design, mechanical configuration and homogeneity of the materials of construction.
Speci6cally, it is not supported by: 1) the results of the multiple accident tests performed; 2) the multiple specimens exposed to the DBE environments; and 3) the detailed and accurate modeling of the worse case plant condition. The Comed qualification of the Okonite splices is based on twenty-nine tested specimens that were either identical in construction or constructed to be more susceptible to potential degradation thaa the splices installed in the plant. Collectively, the specimens were exposed to four separate accident conditions that were more severc than what is expected to occur in the plant during a DBE. The results from the testing were evaluated and a detailed analysis of the effects of the testing on the materials of construction was performed (Attachment C provides a tabular summary of the testing performed and the results of that testing.).
Comed believer that if an inherent flaw is the concern, then damage from an inherent flaw during the testing of multiple samples should result in at least one instance where the inherent flaw (or damage) was in the submerged portion of the splice and a failure would occur. Absent such failures during the testing of multiple partially submerged samples, one could reasonably conclude that such flaws (or damage) do not exist. Ifit is believed that the flaw (or damage) occurs only in the non-submerged portion, then existing partial submergence testing adequately demonstrates the required submergence qualification.
Additionally Comed agrees with the Staffs position (as stated on page 9 of the SER) which states that the splices are qualified for localized submergence outside atainment. However, it should be noted that as similar conditions exist inside ontainment, the splices should be considered equally qualified for localized submergence inside containment.
Since the SER does not include an evaluation of the splice's materials of mattructim there nay hm been an maufLcient preacntatbn of this information in the submittals and during the previous teleconferences with the NRC staff.
Accordingly, the following new information addresses the NRC staffs concern of the potential for a flaw occurring in the unsubmerged portion of the splice.
i k nla brdwd okses.wtf 4
ATTACHMENT B (Continued)
SUBMERGENCE ISSUE Sections 2.0 and 5.0 of Reference (4) provided a description and evaluation of the design, mechanical configuration and materials of construction of the splices. As discussed in Reference (4), the splices are manufactured from Ethylene Propylene Rubber (EPR), a moisture resistant material. Because of the self-fusing ability of the Okonite tape, and the splice installation procedure [provided and described in Reference (2)], the installed splice has a configuration similar to the configuration of the Okonite cable. Because of this, available research data for cable materials can be used in the evaluation of the splice qualification under IEEE 323-?974.
Polymer research (See, for example, the Attachment "D" references) has shown that moisture permeation, sorption and related phenomena are generally equivalent for saturated steam and liquid submergence conditions, at the same temperature. This is supported by broad research comparing measured permeation, sorption and diffusion rates for various types of polymers. This research shu vs that the diffusion and solubility of water into the polymers, typically used as cable insulation, are not significantly affected by the water's state (i.e., as hquid or as water vapor at 100%
RH) outside the insulating material. This means that a DBE saturated steam exposure ar.d a submergence exposure at the same temperature will produce similar mt sture intrusion conditions within the polymer insulation. Furthermore, the concentration of water in these insulating polymers (i.e., solubility) and the rate of water transport (diffusion), both increase significantly with increasing temperature.
This strong temperature influence indicates that the higher temperature DBE steam conditions promote greater and more rapid moisture effects than lower temperature submergence conditions.
In the Okonite Test Reports 407 and NQRN-3, the six (6) splice specimens were exposed to the chemical spray environment at temperatures above 208 F for a period of 30 days in a saturated steam condition and at 212 F for 100 days in a steam condition, only. In the Okonite tests, the splice specimens were exposed to a spray at an elevated temperature and pressure condition, maintained by saturated steam at a spray rate of over 0.15 gal /mindsq.ft. is, at least, a condition as severe as the condition that is postulated for Braidwood Station. In comparing the DBE profiles from Wyle Test 17947-01 to the DBE profiles from the Okonite tests, it is shown that there were approximately 25 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> of exposure to a chemical spray at greater than 265 F and an additional 21 hours2.430556e-4 days <br />0.00583 hours <br />3.472222e-5 weeks <br />7.9905e-6 months <br /> at 212"F in a submerged condition. Both the Okonite and Wyle testing contained a representative chemical spray condition. Both examples are significantly greater than and envelope the necessary 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> at 208*F stubmergence condition postulated for Braidwood Station. The exclusion by the NRC staff of specimen sets 7,8 and 9 from the Wyle Test 17947-01. as stated on page 7 of the SER, is significant and appears to warrant re-evaluation based on the knowledge of the materials of construction of the splices.
- w. m., e s
ATTACHMENT B (Continued)
SUBMERGENCE ISSUE This information indicates that if a specimen has been exposed to the effects of a i
DBE accident temperature / pressure transient or a post accident submerged condition, the moisture effects of either can be the contributor to degradation or to a fabrication /riaterial flaw occurring. It is more likely for insulation degradation to occur during the high temperature and high pressure DBE test because of the extremes both conditions provide. Accordingly, a flaw in the specimen would be detected during a DBE test, that represents the exposure effects in a partially subnwrged condition.
In reviewing the test result information, it is shown that the splice specimens were in a tested enviror ment that models the effects of the worst case partially submerged condicon. Base' upon knowledge of the polymer material, its performance in a partially submerged condition can be considered equivalent to what its performance would have been in a fully submerged condition. The combined j
testing environment, where there were no failures, provides a sufficient testing basis to confirm that a flaw did not exist in any portion of the specimens, that would f
prevent the splices from performing their intended safety function.
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k:nla:brdwd:okres.mpf;6 4
ATTACHMENT B (Continued)
SUBMERGENCE ISSUE In summary, Comed believes that there is a suflicient technical basis to demonstrate partial submergence qualification of the splices in accordance with 10CFR50.49 and the relevant guidance documentation. Comed maintains that the multiple test information, including multiple specimens, coupled with detailed analysis demonstrates the capability of the Okonite splices to perform their intended safety function. The position that full submergence testing of the splice is needed for a partial submergence post accident condition, irrespective to the DBE testing performed and the postulated in plant condition, is not fully substantiated.
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ATTACHMENT C TEST RESULTS k:nta:brdwd:okres mpf;P
4 Attachmeret C Page Cl of C2 Qepon Sphce Typr/
Eml of Die CondWumeng DBA Dectncel bahng Reeshs C"0 "'""'
8 Thenna Rahahon Tempersense pienewe Chesneeds'$ pen, Sohmergence Vinmal inepectma leaufwien Iteweance tsakage Cunent Hegh Vokage Wuterand Ten C3ance407 le I;nemf10V 504 hrs e 2nn Mrad 31us. 3457 3 hrs, ll4 pas, 0 28 molar H,BO..
None 600VAC 30 emps Not Maced Aged & irtudiated amnples I%r erwiew of ene, eat 3 73kVAC 5saem (App A)
Dog Dilldi, 150'C (pg 2, segt.
3 hrs, 335T.
th's. 99rerg.
0 64 maler Na,S,0,.
fluough 86 AWG
^ hghtly higher mannered, hometer once after 30 days of are s
5/32* T95 tape ips 2. see, rg A6, ehrs. 31ST 4 hrs. 69 ug, tusflered el NaOH to pH (pg. 5. aMt. pg A7 and comessentty smular read-parnples mese ces-and once p me est (130 F
with No 35 pg A6 IIM2)
B1krs. 2657, Elbrs. 24ps g.
of to.5 977T llM2) ings as the usaged samples ennuousty powered at dayt no decada se esser enent apphed iIM2) 3024 hrs. 212T 3u24hre. Opng 9015 gal /mierft' thereghnue the DB A tea (COV AC 30 amps es-and 4 spehwam. 2 (pg 3. test. pg A6 (pg 1. test pg A6 fpg 3. ses.)
(pg 7, erw) cepe when semed inr 14 (pg 7, tru. pg A7, IIM2) aged,2 manged 1IM2)
IiM2)
(pg 1. trat, pg seeding Al.1192)
(Donser-5tV in-Lene.
504 hrs #
200 Mrad 3ers 341*F 3 hrs, lleassg.
023 miolar H,RO,.
None 44VAC 80 amps Insulatrae mese-After psoblese enh era fit-Nte ennessered, comad-Not espheitty given, NQRN.1 Dog Dil439, 15(pC (pg 3, teet.
3tas 3337 3brs 99paig.
0 64 innlar Na,3,0,.
through as AWG tuned flensbsiny, tuneg wires esa sesolved,IR esed teelnefhani for stated as 80V/mut, no Mpp A) 5/16" 795 enpe, (pg 3. erge, pg A6 4hre. 3137 thrs, 69p'43 buffreed of NaOH to pH frg 6, are, adheaan vemsumed readmgs alwesed new amn.
$kV alTheanoen data gives on waner f
one I/2 lapped pgA6 IIM2) 8 t hes. 2637, glhrt. 24: sang, of 10.5 9777 hereces cable and har to sho*e trat proutts aged used Bseekdows vohage lever of ered-IIM2) 3024 hrs 212T 3024 ties, lipeg 9015 sal /mieth' sphce and irradissed sampics had was done poe4ese a conduceng tape, (pg 1. test. pg A7, (pg 3, erse; pg A7 fpg 3,are)
(pg 3, era) hetier IR ever 40kVAC 9 times
(
one 1/2 lapped 1182) llM2)
(App 9, test) the rased wekage (SkV) byer of No 33 I speleiras, I (pg 7, test) aged (rs 3. seet-pg A2.IIM2p g
Gamme G-3 Suntler to ahnee test
"" _.. ^._ "* LOCA chese.
None Energued a rated peers.
Not stased Net simed Samples mese con-Staard as 30Vhnsi in tup (Dpp A) ical spray per IEEE 323-taal Vokage and cuneet tauoudy energised ouer a suom tempers >
74 (pg 3) tore W;D 17842.
'Y* fyre TT3 None Mone BimutJ phase I phase I 1/4* ac-Saecisera mets ! EL{
phone I pheme I Not.
". lut Not ceeducted (pheme In No 33. A co-3hrt, 35$7, 3 hrs. 49 Speig.
None cumulance 432VAC (mennuum, pgs Specemeen west After pheme 1, mR fit venomgs spectures were power j
17896-3, sneet having w 3 hrs, 3:07, 3hrt. 49.3fes.
hiehed toy the m.29 so 37 er -2 erst damp to souch.
eere gremer than 2 SE7 ythroughnut fpheme II) tous overley Ishru. 2307 18 hrs.15 png hp height of she show actual wohage ap-Light coat of white Olme 9 500VDC med 150T.
een through fused poe-(ILSalle see) lengehn ever is.
fpg ID-10. -2 test)
(pg. III 10. -2 hos, specimens phed to be $2 VAC). 6 7 and brown residue pg IV-$,6 er supphes.
Opp. Q) soluston (Spect-em) 1 A to 6A fans amps stueath #14 AWG over enrise specimes snee sets 3 and 6 I%mme !!
phene 11 1%ese H is treaf) were er 15 arnps through e2 surface.1/4* of es.
Eheat3 esse suh)ected 72hru,266T 72 hrs, amt.
Demmershaed emer autjected to AWG ert - -
- dur-Aper phner 11. aD specimens to both eres (pg 18010. -3 gew)
(pg 111-10,.3 90.15galhmn/It' these specimes nets 5 & 6 ing tem.
neemtemed Ilt g,eaner than phases) era)
(pg III-lo. 3 see pg Spehmena $4 10gVAC f (pg. V-l. -2 see)
I SE7 Olune 9 500VDC and (pg Bld, llM2)
B14. IlM2) sad 64 eese spectfied, pg Irl 28 (-3 phane II 2507 escept spechnen 6A 24 spectaiens.
(pg B14. IIM2) espeeed en been est) et erport shows ac-emme se shove eluch hed IR of 450KD tels la emeteems mee (2 sphces) tual apphed voltage to be (pg V-1 -3 erst)
OIOY. No estme gives for havlag weep fre e graal of mound 132VAC),6.7 low stading However.
hofe.13 =Hhee0 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> of amps teNoWgh el4 AWG epecture 6A i car-(pgs 82 to B9, seemg Okonne cane cast knegrity thvoughout the llM2)
(pg V-l. -2 test test (pg IV-3, see) and pg V-I. -3 ere)
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Repon Sphce Type /
End of Life Conditioning DBA ConGguration Thennal Radiation Temperature Pressure Chemicals / Spray Subm Okonite-407 in-Line/600V 504 hrs @ 200 MP[ 3 hrs, 345*F 3 hrs, l l4psig, 0.28 molar 11,B0,,
None (App. A)
Dag. Dil845, 150*C (pg 2. test; 3 hrs, 335*F, 3 hrs, 95psig, 0.64 rnolar Na,S 0,
2 3 5/32" T95 tape (pg 2, test; pg. A9, 4 hrs, 315"F 4 hrs, 69psig, buffered w/ NaOli to pil with No. 35, pg A6, i1/92) 8 t hrs, 265"F, 8 t hrs, 24psig, of 10.5 @77'F cement apphed i1/92) 3024 hrs,212*F 3024 hrs, Opsig
@015 gal / min /ft' 4 specimens,2 (pg 3, test; pg A6, (pg 3 test; pg.A6.
(pg. 3, test) aged,2 unaged i1/92) 11/92)
(pF.1, test; pg.
Al, I IN2)
Okonite-SkV In-Line, 504 hrs @
200 Mrad 3 hrs, 345*F 3 hrs,114psig, 0.28 molar li,BO,,
None NQRN 3 Dwg. Dil489, 150"C (pg. 3, test; 3 hrs, 335*F, 3 hrs, 95psig, 0.64 molar Na,S:0,,
(App.A) 5/16" T95 tape, (pg 3, test; pg. A6.
4 hrs, 315*F 4 hrs, 69psig, buffered w/ NaOli to pil one 1/2 lapped pg. A6, i1/92) 81 hrs, 265*F, 8 thrs, 24psig, of 10.5 @77*F layer of semi-11/92) 3024 hrs,212*F 3024 hrs, Opsig
@0.15galimin/ft' conducting. tape, (pg. 3 test; pg.A7, (pg.3, test; pg.A7, (pg. 3, test) one 1/2 lapped i1/92) i1/92) layer of No. 35 2 specimens, I aged (pg 3, test; pp A2,11/92)
Okomte G 3 Similar o abose test "Staadard" LOCA chem-None (App A) ical spray per IEEE 323-74 Wyle 17856-2, "V" type. T95, None None l' hag I l'hase I Phase I 1/4" (phase 1)
No. 35, & cc-3 hrs, 355*F, 3 hrs, 49.5psig.
None cumul 17856-3, ment hasing var-3 hrs, 320"F, 3 hrs, 49.5 psig, limite (phase II) ious oscrlap 18 hrs, 250*F 18 hrs,15 psig lip he (LaSalle test) lenFths over in-(pg 111 10, -2 test)
(pg.111 10. -2 box,s (App.H) sulation. (Speci-test) l A to men sets 5 and 6 Phase 11 l'hase 11 Phase 11 in tot were subjected 72 hrs, 266*F 72 hrs, sat.
Demineralized water subjec to teth tests (pg.111-10, -3 test)
'pg 111-60, 3
@0.15 gal / min /ft' these phases) test)
(pg.111 10, -3 test; pg.
S pect (pg. Bl4,1 t/92)
Bl4, i1/92) and 6 24 specimens, (pg Bl4,11/92) espos (sis in enclosure tests (
for a t hasing weep 96 h hste,18 althswu testin (pgs. H2 to H9, i1/92)
(pg.\\
and i test) 7
~ ~ - -
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Attachment C, Page C1 of C2 Electrical Loading Results lrgence Visual inspection Insulation Resistance Leakage Currere High Voltage Withstand Test 600VAC,80 amps Not stated Aged & irradiated samples Per review of test, not 3.75kVAC, Stain through #6 AWG maintained slightly higher monitored, however once after 30 days of test (pg. 5, test; pg. A7, and consistently sirnilar read-samples were con-and once post-test (130 llN2) ings as the unaged samples tinuously powered at day), no details on water throughout the DBA test 600VAC,80 amps ex-used.
(pg.7, test) cept when tested forIR (pg.7, test; pg.A7,1182) reading
{ SkVAC,80 amps Insulation main-After problem with test fis-Not monitored, consid-Not explicitly given, through #6 AWG tained flexibility, turing wires was resolved,IR ered insignificant for stated as 80V/ mil, no (pg 6, test) adhesion remamed icadings obtained were simi-SkV applications data given on water between cable and lar to above test results, aged used. Breakdown voltage splice and irradiated samples had was done post-test at (pg 5, test) better IR over 40kVAC, E times (App 9, test) the rated voltage (SkV)
(pg.7, test)
Encrgized at rated poten.
Not stated Not stated Samples were con-Stated as 80V/mit in tap tial Voltage and current tinuously energized water at room tempera-(pg.3) ture t-Soecimen sets 1 to 4 Phase I
[hg_1 Not monitored, but Not conducted.
$ ion.
432VAC (minimum, pgs.
Specimens were After phase I, all IR readings specimens were power l hy the
!!!-29 to 37 of -2 test damp to touch.
were greater than 2 8E7 continuously throughout
)ht of the show actual voltage ap-Light coat of whire Ohrns @ 500VDC and 250"F, test through fused pow-
>cimers phed to be 528VAC). 6.7 and brown residue pg. IV 5,6
' ~, yptics.
A (sl4 amps through #14 AWG over entire specimen
- were or 15 amps through #2 surface.1/4" of wa-Phase II yd ta AWG ter accumulated dur-After phase II, all specimens
/.g [ "
p Q p,j hnditions Snecimen sets 5 & 0 ing test.
maintained IR greater than ha 54 108VAC (minimum (pg. V-1, -2 test)
I SE7 Ohms @ 500VDC and fn M
- ;, h, n,,,
i l w ere specified, pg 111 28 ( 3 Phase !!
250"F except specimen 6A
{W ' TID
.r
- q p to both test) of report shows ac-same as aime which had IR of 450KD
( splices) tual applied voltage to be (pg V-1,-3 test)
@l0V, No cause given for y of around 132VAC) 6.7 low readmg. llowever,
- g. g, 9
4 of amps through #14 AWG specimen 6A mamtained cir-Okomte cable cuit integnty throughout the pE
- 1. -2 test test (pg. IV 5, test)
V 1,-3
- ~ ~ ~ * "
- i Report Splace Type /
End of Life Conditiot ag DBA C "I'8"'*" "
Thenna!
Radiation Temperature Pressure Chemicals / Spray Sub Wyle "V" type, i14 hrs @
22MRads Two sequential ex-(See left colu 2500 ppm 11,B0,,
Speci 17947-01 specimens 1-6 110"C for (pg. C15, posures shown on pag-buffered with NaOH to 8.1, a (Farley test) dropped from 7.1, 8.1, IIN2) es C 23 to C 26 of get pH of 10.7, spray
= ere s (App. C) review because and 9.1 11/92 submittal.
maintained at pH of 10.5 local a of asailable bon to 11.0 dunng test (pg.
merge drainage. Speci-Il2 hrs @
Temperature peaks at VI 26 of test repon) aroun soluti nrns 714 did i10"C for 323*F/6 4psig and test du not have jacket 10.lA and 393"F/53.3psig.
n&6 hr tape except 10 &
10.3 (J noti i1.10 had No 35 tape and 253 hrs inerne Ii had Scotch er150"C t
(Fr4 (
CD,1 Super 33+.
for 131 to Specmens 13 14.3 and 14 only had No. 35 tape and (pg. CI5, no T95 apphed.
IIN2)
(pgs. Cl to Cl4, llN2)
Wyle 60 spiices,33 Vanous 10MRads Group I Group 1 None Specin 17961 01 "V" and 27 tmrs at (pgs.111 &
6 hrs, 230"F, peak 4,45psig "A" w (LaSalle test)
In line t)pe on 130"C.
IV-1, test; 48 hrs. 212"F (pg. VI 70, test) jected (App.D) sarious cable most time pg.D7, (pgs. VI-71 & -72, imens) subme types.
was for 1IN2) test, pg. D19, IIN2)
Sphces to meet sets 3, 8 Group 11 condit I
LaSalle taping and 13 of Group 11 peak te48psig lar to procedures.
1432 hrs 6 hrs, 230"F, (pg. VI-100, test) for as-1 (20 splices sub-(pg. V-1, 54 hrs,212 F splice ject to local sub-test.
(pgs VI-101, -102.
(test mergencel pg D15, test) tions <
llN2) group 60 hrs, (pg D5 & D6, 1IN2)
+=-- v
Attaclunent C, Page C2 of C2 Electrical Leading Results hence Visual Inspection Insulation Resistance leakage Current High Voltage Withstand Test ans 7.1, I 7.1 E 1. nnd 9 i All specimens had Not measured, circuit integri-7.1 R 1. 91 Not conducted D 9,1 632VAC,20.5 amp pow-coating of spray so-ty was evaluated via not monitored Sject to cred for first 65 minutes lution.
energization (2 columns on of test and then re-ener-specimens 7.1,8.1, left) 10.l A and 101B se of gized near end of test for and 9.1 were sub-0 00 ma (to ground)
- 1/2" of 2 minutes, this simulated jected to around a for the control circuit applica-1/2" of submerged i1 I and 12.1 wion tions having current "in-conditions through-1.20 ma (to ground)
),
rush" effects.
out the test. (pgs.
pa sutu C27 and C28, 13.1 and 14.1 h
ID_l A 10 t il llN2) 0.00 ma (to ground) 22 and 137.5VDC, 200ma, con-1/92) tinuously powered (pg.C22, llN2) sJ l
11.1.12.1.131 ILL 137 5VDC,2roma, pow-cred for first 60 minutes, unpowered thereafter.
l (pg. C19,11/92) n sets Gm@ 1 All splice sets "A" Group I tess than 60 ma, Not conducted sub-305VAC,2.0 amps for wer-lying in ac-At peak temperature (pgs VI-7 and VI-8, 20 spec-set iI and 6.7 amps for curr Jated moisture (229.3*F), minimum IR for test; pg. D18 of i1/92) lto local all remaining sets, (pg.
at tuttom of box.
any *A" specimen was bence VI-2, test; pg. Dl7, Photos VI 19 to 21 1.9 x 10' Ohms (pg. VI-121, ps simi-IIN2)
(pgs. VI-40 & 41, test). At end of test (214*F &
lnpected test) and VI-50 (pg.
immersed), minimum IR was nstalled Gmg3 VI-59, test) shows 50,0000 @10V DC (pg.
l 305V AC,64 amps moisture tracking up VI-129, test)
) A dura-(pg. VI-4, test; pg. D17, around splice body 54 hrs, 1182) at lap points.
Gmp3
- ,Q {*J ; ("MI{J lh
,and None measured during test.
5
' 'i [ Q f"^
-e jroup II)
Post test minimum IR for set f {} p ?_
({, j.,' ] "
- l' "A" was 500,0000 @100V (pg VI-136, test)
M ;' s Meo AvapHe nn Aperture C2M 7(6 3 0 / F0
^
ATTACHMENT D REFERENCES LIST 1)
C.E. Rogers, in E. Baer ed. Engineering Design For Plastics, Reinhold Publishing Corporation,1964, Chap. 9.
2)
J.A. Barrie, in J. Crank and G.S. Park ed, " Diffusion in Polymers", Academic Press,1968, Chap. 8.
3)
W. Siegler, EQ Testing Of Electrical And Electromechanical Equipment At KWU Laboratories - Experience and Consequences, Proceedings of the International Topical Meeting on Operability of Nuclear Power Systems in Normal and Adverse Environments, Albuquerque,1986.
4)
W. Kawakami et al, Progress On Qualification Testing Methodology Study of Electric Cables, Fifteenth Water Reactor Safety Information Meeting, NUREG/CP-0091, Vol 3,1987.
5)
L. L. Bonzon et al, Status Report On Equipment Qualification, Issues Research and Resolution, NUREG/CR-4301, SAND 85-1309,1986.
6)
R.D. Naybour, The Influence Of Water On The Electric Strength Of An Ethylene-Propylene Insulation, IEEE Trans. on Electr. Insul., Vol. EI-13, No.1,1978.
7)
L.D. Bustard, "The Effect Of LOCA Simulation Procedures On Ethylene Propylene Rubber's Mechanical And Electrical Properties, NUREG/CR-3538, SAND 83-1258,1983.
i
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