ML20118A118
| ML20118A118 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 05/19/1992 |
| From: | CONAX CORP. (FORMERLY CONAX BUFFALO CORP.) |
| To: | |
| References | |
| CIVP-A-124, NUDOCS 9207310202 | |
| Download: ML20118A118 (62) | |
Text
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iiR A NC64 IPS-107 TEST REPORT ON ELECTRICAL TERMINATI0!iS SUBJECTED TO DESIGN 11 ASIS ACCIDENT ENYIR0hHEllT NORTH ANNA POWER STATIONS UNIT I AND II YIRCINIA ELECTRIC AND POWER C0!iPANY RICHMOND, VIRCI!:IA STONE AND WEBSTER ENGINEERING CORP. - ACENT 9207310202 920519 PDR ADOCK 05000348 G PDR
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son . ., c...OR.POR AT.eION R E V. DATE
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T EST REPORT ON E LECTRIC A L T ERMIN ATIONS SUBJECTED TO D ESIG N B ASIS A CCIDENT ENVIR ON MENT N ORT H AN N A POWER ST ATI ON S 1 AND 11 VIRGINI A E LECTRIC AND POWER COMPANY RICHMOND, VIRG!NI A ST ON E A ND W EBST ER EN GIN E;klNG C ORP, - AG ENT paroauco in __. ._ _ .___.___._. D*TE Willia m Bernbeck , T est E ngi neer ArppO ct D tis . .
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A* STRACT i l
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Electrical Terminatiors for inside containmer.t opplication were tested under Design Basis Accident conditiors for North Anno 1 and 2 Nuclear- _
Power Plants. Test iterra corsisted of twminal block connectiors and splices contained in enclosures, ord splices which were exposed directly to the environment. Test items utilized conductor sizes from #16 AWG to 250 MCM Approximately fifty-perrent (SD%) of.the test itens wwe irredloted to on intyroted doso;je lavel of 2.5 x 10' rods minimum prior to DLA Testing. In oddition, one enclosure contolning test iterrs was also thermally aged prior to DBA Testing.
Test results show equivalent perfornonce of enclosed terminal Llock connectiers and/or enclosed splica and. indicate occeptobility of either method fe irside containment opplication.
Section I of the following report presents the test procedure utilized to corduct the test program. Section 11 presents details of test item -
corstro: tion, test details and conclusiors.
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IPS NO. - 107' 4
h TABLE OF CONTENTS. ,
i l-IPS-82F - Test Procedures for Spliced = ;
SECTION I Conductor Connectiors and for Termirel'
! .. Blocks for irside Containment Applicotton.
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IPS-107_-Tat Report on Electrical
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!?CTION ll Termitettons Subjected to Design Basis .
Accident Environnwnt.
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TEST PROCEDURE l
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No. IPs.- 107 -
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CONAX 70.* f ".'"',,,. CORPORATION-
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i TEST PROCEDIRE AND REPORT ON ELECTRICAL TERMINATIONS SUBJECTED i TO DESIGN BASIS ACCIDENT ENVIRONMENT 4
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DATE PREP ARED BY __. .
W. G. Bernbeck, Test Engineer
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W. S. Routio, Nuclear Products Manager DATE
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CONAx CORPOa ATION
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, CONAX 2300 W ALDEN A JENUL BUFF ALO, NEW YOR A idM
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TABl.E OF COMTENTS t
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DESCRIPTION PAGE
! P,ARAGRAPH 1
1.0 Scope 2.0 Reference Specificottons and Drawings 1 Assemblics To Be Quollfied 2 3.0 Test item Corstruction 4 4.0 Test Ersironment Facility 7 5.0 ,
Test Operations 9 6.0 Test Results 14 7.0 Conclusions 16 8.0 Apperdix A Test Conductor infornetton Test item Nomenclature ~
Test Foellity Schematic Test Circuit Diagrorrs Appendix B Test Doto Sheets Appendix C Thernet Aging Summory Appendix D Decontaminant Spray Details Appendix E Compilation of IR Test Data Appendix F Photographic Appendix t
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TEST REPORT l
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1.0 SCOPE This document coven the test pro:ndure and results for determining 5 the integrity and suitability of the following electrical penetration conductor 3 terminatiors for use inside containment of the North Anna Pcww Station, Units 1 and 11 of the Virginio Electric and Power Company. The follcming tpes of conductor terminottors were tested:
Item A. Termtrol Blocks; Mounted in ene.losures (terminal boxes), termimting oerwtration conducton and incoming cables, item B. Enclosed Field Splices; Penetration conducton terminated to incoming cobles by field splices inside enclosures.
Item C. Factory Splices, Not Encicsed, Pe.cration corducton terrrinated to factcry essembled pigtails e.,utside enclosures ,
item D. Field Splices, Not Enclosed; Penetration condu: ton terninoted to incoming cables by field splices outside en:losures.
Refer to Toble I for on outline of penetration types and cc,nductor sizes to be tested per the above itemizatiers.
2.0 REFERENCE SPECIFICATIONS & DRAWINGS, NAS-21 Revised May 5,1972
" Specification for Reactor Conteinment Electrical Penetrations for North Anno Powa Station,1975 Extersion - North Anna Power Station, Virginio Electric and Power Company, Richmond, Virginio".
IPS-82 Test procedures for Spliced Conductor Connectiors and for Terminal Blocks for inside Containment Applicotton.
IPS-91* Connecting Penetration Assemblies to Field Cables.
Drawing 7057-09000 Electrical Penetratiors for North Anm Power Station Units 1 ond 2 Drawing 7057-10000 Outline dmwing Irstrumentation, Control, and Low Voltage Power Penetration.
Drawing 25K-818 Enclesure, Sub-Assembly Drawing 7079-24000 Enclosui e, Sub-Assembly Decloped for Surry Power Station; for information only. )
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CONAX to t.w ce a s 'a r, w coneoaatio%
IPS - 107 l
CONM CORPORATION rit: sev Aw tvas> Ma ssa tens l 3.0 ASSEMBLIES TO BE QUAllFIED 3.1 Tests of items shcwn in Toble I shall qualify these items Tc, their intended use inside the containment during design basi' occident corditions.
3.2 Tests of item A will, in addition to the above, be used to qualify penetration types 11 A,11 B,11 E, and IV. These particular types will not be tested clue to their lock of criticolity and to their similarity to the tested tpes.
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CONAX No. IPS 107 a vant ce t.ve must towcmateos ;
I CONa4 COAPORATION
{ , tu wue se t+s % rnescn 14:?s y i TABLE 1 PENETRATION CONDUCTORS TO BE TESTED ITEM A ITEM B ITEM C i ITEM D (T ER t,'IN A L (FIELD SPLICES, (FACT ORY SPLICES, (FIELD SPLICES, ELOCKS) ENCL.) NOT ENCL.) N C" EN C L.)
Penetration Conductor Penetrction', Conductor PenetratiCn Conducta Penetration' Cord ior i
__ _T.ype ,
Size ; T ype Size T ype She T ype Size -.
! 1A # 16 AWG 1A # 16 AWG 11C @ _ l # /0 AW G 2 11D ; 250 MCM 1B _ #14 A"'G 1B # 14 AWG
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I _ _ 1 C. . #10 AWG IC #10 AWG h $
11C #?/0 AWG_.
_11C _ _ #,. 2/0 AW G _
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1 A .. . .. #
Cl 16 A\yg.d 1C #10 AWG i
l @ The#10 AWG test conductors will be connected to #11 AWG Field Conductors from incoming cables.
ltems to be tested for supplemental information only.
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($) The test assembly will consist of two #2/0 solid copper conductors connected by a single # 2/0 stranded copper jumper inside the test chamber.
3.3 The following specifies the rated current to be opplied to each conductor under test:
Conductor Size RtedCgrent item No. (AWG or MCM) (AC omps : 10Te )
1 #16 AWG 1.0 11 #14 AWG 1.0 111 #10 AWG 15 IV 82/0 AWG 150 V 250 MCM 230 Page 3 8
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- 4., Terminal Blocks.
4,1.1 The terminal blocks tested were all Connectron, Inc., Cotolog No. NSS3, with j thermoplastic parts molded of polysulfona.
I A total of 24 terminals on el-bt (B) terminal blocks were tested with terminating
( 4.1.2 i
conducton of #16, #14, # 2,1 crd #10 AWG. The # 16 o rd #14 AWG conductors were connected to the terminal blocks with unirsulated Burndy Ag tongue l
' connectors (;Hylog YAV T1). The #12 and #10 AWG corductors were connected 2 ' to the terminal blocks with uninsulated Amp ring tongue connectors (Amp Inc.,
! Sollstrard, P/N 32994),
i 4.1.3 The corductors of 4.1.2 were further divided into one of two types os follows; 4.1. 3 .1 Penetrotton Conducton - Solid copper corductors with polyimide (kopton)
Irsubtion identical to those corducion used in Corax electrical penetration ossemblies. Conductor sizes tested of this type were #16, # 14, ord # 10 AWG.
I 4.1.3.2 Field Conductors - Strorded copper corductors with "XLP" Irsulation in neoprene jocketed cable supplied by Stone ord Webster. The cable samples tested were os folicms:
c) Boston Insulated Wire, 300 volt, 2/c,16 AWG, NGA 69.
> 'ockbestos Pyrotrol t il, 600 volt , 3/c,14 AWG, NGA-36, c) Ck anite Ckoprene , 600 volt, 3/c ,12 AWG, NGB-19.
4.1.4 The. penetration conductors were crimped and soldered to their respective ring tongue connectors. The field corductors were crimped only to their respec eve ring tongue connectors. Crimping was performed with on Amp pneumatic crimp tool, model 69010-tM.
4.2 Field Spliem.
4.2.1 A total of 37 field splices were tested with terminating conductors of I 16, #14, # 12,
- 10, 2/0 AWG ord 250 MCM, Field cables used in these terminatiers were the some os specified in 4.1.3.2 for the #10 through # 16 conductors. The 2/0 AWG ord 250 MCM field conductors were also supplied by Stone end Webster and are described os follows:
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a) 2/0 AWG, 600 volt, silicone irsulation, onbestos, locket ,
b) 250 MCM, 600 volt, silicone Insulation, osbestos locket .
4.2.2 The field splices were constructed os follows:
, 4.2.2.1 Fourteen each # 16 AWG solid (koptoa) connected to #16 AWG simrded (fleid)
I with Thones & Betts type BB-2 in-llr,e splice connectors.
{ 4.2.2.2 Six each 814 AWG solid (kopton) connected to I 14 AWG stranded (fleid) with j Thones & Betts type DB-2 in-line splice conner. tors.
i i 4.2.2.3 Nine each # 10 AWG solid (kopton) connected to 112 AWG strorded (field) with 1 Thones & Betts type CC-2 in-line splice connector:.
I 4,2.2.4 The connectors of 4.2.2.1, 4.2.2.2, and 4.2.2.3 were crimped and soldered onto the solid conductors and crimped only onto the stranded conductors. Crimping was perf med with on Amp pneuncti crimp tool, model 69010-M4, Five each 2/0 AWG solid, kapton insuioted, copper corductors were connected l4.2.3 to 2/0 strorded kopton insulated copper cocductors with Corux crinp/ thread connectors (P/N N-34000-01 ). T hese 2/0 stranded corductors were in turn connected to 2/0 stranded field corductors with Thones & Detts type 54510 i in-line, crimp-type splice connectors Crimping was performed with a Thones a Betts 13642 hydraulic crimp tool equipped with a T & B No. 45 hex die.
, 4.2.4 Three each 250 MCM solid, kopton insulated, copper corductors were connected to 250 MCM strended field cable with Corox crimp /throod connectors (P/N N-34004).
Crimping was performed with o Thones & Betts 13642 hydraulle crimp tool equipped with a Thones & Betts No. 62 hex die.
4.2.5 Splice insulation - ths tield splices were insulated as follows:
4.2.5.1 Eoch splice had 3 windings of 1,5 -mil kepton tape opplied directly over the spl ice connector. Each wirding was started at least one inch from the erd of the connector on the conductor insulation and was wound to of least one inch from the erd of the connector onto the other conductor irsulation. Each turn of the tape utilized at leost fall the lope width in overlap on the previous turn. The#10 throu0h8 16 AWG termirations fod 1/2 inch wide tope opplied, while the #2 /0 AWG ord 250 MCM utilized 1 inch wide tape, 4.2.5.2 Each kapton-wrapped splice then had a piece of polyotefin heat sFrirk tube sh-u* over the splic e. The tube extended one inch minimum beyond the orce co <ered by the kopton tape, s
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CONAx NO. IPS - 107
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i4.2.6 in order to provide on "Intirrote grourd" to the field splicos, each Spilce had o l length of #16 AWG tore copper wrapped oround the polyolefin tube in the j vicinity of the connecter. This intimate ground" wire would then be grounded j
during the octual testing.
4.3 Ioctory Splica.
- 4.3.1 Two factory splices were corstructed corvisting of a #2 /0 AWG solid copper, kopton insulated, conductor connected to o #2 /0 AWG strorded copper, kapton irsulated conductor. The solid conducton were connected to one end of a
- common strorded conductor which octed as o jumper between the two splices.
i l4.3.2 The factory splices were rrode with Corax crimp / thread connectors (PA4 N-34000-01) in the nonner det 19ed in 4.2.3 for connecting 2/0 solld, kopton irsulated, 2/0
+ strorded, kopton insuloted.
4.3,3 T he factory splices were irsulated in the tronner described in 4.2.5.
-4.4 Enclosures 4.4.1 Two enclosure bees were built per Corax drawing No. 25K-313. All surfaces of the enclosures were pointed with carboz!nc No.11.
-4.4.2 Enclosure 1 was equipped with Croue-Hinds CGB series cable fitting. Enclosure 2 was equipped with Thones & Betts type 2535 series cable fitting. The cable j fittings were mounted to the removuble enclosure lide plates.
4.4.3 The enclosure side plotes ord top cover were gasketed to the enclosure assembly with R-10470 silicone spong rubber tape (Connecticut hard Rubber Company).
4.4.4 Each eulosure was equipped with a 1/2 inch drain pipe on the bottom side.
Refer to Figure 15 of the photographic appendix.
4.4.5 Eoch enclosure had one Connectron NP 12 '/2 termlrni block mountbo roli rock welded irside it .
4.4.6 Each enclosure had the following numben and types of test termirettors ossembled Irside it:
T cr minatiors, Conductor
_ T ype N umber Site (AWG)
Terminal Blocks 6 16 3 14 3 10/12 s I y Page 6 3
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_ T ype N umber Sti e(AWG )
Field Salices 6 16 3 14 3 10/12 1 2/0 In addition, coch enclosure fed one 3/c # 14 AWD field cuble ord one group of eight (8) # 14 AWG penetration conductors enter and exit it 8ree of splices or termirntiora internal to the enclosures or test clamber.
4.4.7 Each group of penetration 3nductors entering the enclosures was jocketed with neoprene hat shrink tubing, positioned to olicm the cable fitting scolont to seal onto 4
it . This locketino was brought into the enclosures a minimum of 4 inches and extended I of least I foot ounide the enclosures.
4.4.8 T he conductors entering and exiting the enclosures were arranged to allow the i penetration conductors to enter the enclosures from the left side (os viewed from
! the enclosure top cover), ord the field cables to enter from the right.
l 4.5 Re', to Figure 1 of Apperdix A for on outline of nomenclature used to describe
.? , t i t e rm . Toble 1 of Apperdix A outilrw s the pertinent inforrration on the
, *. 7.i it e ns .
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- 5.0 TEST ENVIR Of U.'ENT I / ClLITY 5.1 Refer to Figure 2 of Apperdix A for o dioprom of the Conax Design r,osis Accident test facility.
5.2 The test iterrs were ouembled into o test chamber to which the following operatiorol/
environmental systerrs could be opplied:
5.2.1 Electrical operation - erobled the test conductors and terminations to be energized to rated current or voltage as opplicoble . Also prcwided access to the test ite rs for operational measurements during environment.
5.2.2 Lou of Coolant Accident (t.OCA) - introduction of incident steam to test chamber otmosphere to cause n pressure ord temperature rise from specified ombient conditions; the pressure / temperature rise clorocteristics to simulate those conditions inherent to o loss of coolant occident cordition from o pressurized water reactor (P\'R). Radiation exposure of test iterra preceded 1.OCA incident.
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5,2,3 Emwgency Coolant Sptem - Introduction of a water ehemical sproy onto the test items both during and offer LOCA Incident corditions. The spray system simulata tint brought about in response to o LOCA cordition inside o PWR contolnment.
'5,3 Assembly of test Iterrs into test facility.
5.3.1 Rodlotion Exposure - Prior to osserr6ly into enclosures or test facility, a selection of tat Ityns was subjec*ed to gammo irredlotion. An Integrated doeoge of 2.5 x 10 rods minimur:. was imposted on the test Iterra that conpos4 Rodlotion l Bundle 1 (RBI)and Radiation Burdle 2 (RB2). Refer to Table 1 of Appendix A for o brookout of those Itens contained in RBI and RB2. RB I Items were Irrodloted on the weekend of 3/30/73, RB2 was irredloted on weekerd of 4/21/73. Pre- I and post-rodlotion photographs of the test items are contained on pages -to of the Photographic Appendix. Irrodloted test flerrs comprisnd 41% of the total number '
of test itens. I 5.3.2 The test itens, along with test control sempfw, were anembled into the '
erwironmental test focility as follows:
5.3.2.1 Encicsure 2, along with its built-in tut liens, was thst placed inside the int ;
crumber, it was positioned such that the bottom of tho enclosure was obcut 12 1 Inches from the bottom of the test clon6er. The back side was placed age. Inst the steam Inlet stordoff bracket (about 1-1/2 Inches from the reos chamber woll). The conductors from this enclosure wwe directed out the front opening of the test- l c ho rrber.
5.3.2.2 Enclosure 1, along with its built-in test Itens, was then placed Irstue the test chamber immedlotely in front of enclosure 2 and at the some height from the chonber bottom. The conductors from this enclosure wwe directed out the front opening of the test chamber.
5.3.2.3 The itens to be tested as non-enclosed field splices and non-enclosed factory !
splices were mounted directly to the front hooder flonge of the test chamber. '
5.3.2.4 The vest conductors from both enclosures were directed through pcets in the hooder flange and sealed with Conox PG rocking glords x Conox MHC pocking ;
gloids. The flange was then fitted and neoled to the tat chamber. ;
5.3.2.5 The test conductors routed through the sealed hooder flange were twmlnated to the control switchboard. Wiring diagrans of the switchboard ord control ,
bench circuitry are contained in Figures 3A, 3B, 3C, 3D, ord 3E of Appendix A.
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CON A A CO3POrA %
i CONAX m vumm .m i A Ur.i r OF L 5 rL HLirw CORPOR ATiON l u__._ _._ ._
l 6.0 TEST OPERATIONS l l I
6.1 Insulation Resktonce -The test Itens were subjected to irsulation resistance measurements at 500 vo't: DC in accordance with the following schedule r IR Test No. Description i
1 Initial readingt Termirations have been built but otherwise have not been instelled into test letup.
2 Post-Rodlotion reading; Doto on those termirottors expos'ad to gamnn irrodiotion.
i 3 Installation reading; Doto on those termirations installed into test enclosures.
4 Post-oge rooding; Data on enclosure 1 test items citer thernal aging.
5 Pre-Incident reading; Date on all termirotions offer Installotion into test chamber.
6 thru 16 Daily reodings during Phases I and ll of LOCA environment.
17 Post-DBA reading; Test liens were still scaled into test
, c lo mber .
18 Post-DEA reading; Test itens removed from test elember .
- 6.2 Dielectric Strength (Hypot) - The test iterrs were subjected to Hypot tests immediately ofter IR Test Nos. 3, 5, 6A, and 17. All 300 volt rated
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test itens were tested at 1600 volts RMS, all 600 volt rated test itens wwe l tested at 2700 volts RMS.
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'6.3 Continuity - The test itens were tested for continuity with on audible continuity checku immediately off er IR test No. 2.
l6.4 The dato collected from 6.1, 6.2, and 6.3 ore contained on the data sheets presented in Appendix B.
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!6.5 Thernel Aging - Enclosure I was subjected to o 22 year simulated life ofter
} installation of test terminatiors and corductors but prior to ossembly into j test chamber. Details of thernel aging ere contained in Appendix C.
I6.5.1 The field cable ossembled into Erricsure 1 exhibited signs of donege of
, i sufificient nognitude to worrent their replacement with fresh, vroged cable i somples. These replacement cables were trought irside each encicsure ord
-l connected to the origirol field corductors about 6 to 8 inches from the origirol solice . Thus, the origirol splices were sept intact. The ne.v splices were insulated
- os described in 4.2.5 in a
- j was jocketed with a pieceneoprene ofdition,$ect th entire shrink goup tubing of extend newng spli from ,e from bnew cable e coble ina .+ *n eLn, > i ,4 o. L...eea . L . . o - o- .. o
E CON AX CORPORATION ,
8300 WALDEN AVENUE j.
A UNIT OF LSTERLINE CO5tPor4ATION BUFF ALO. NEW YORK We26 f
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LOCA Environment Tat Operation.
l 6.6 6.6.i The test Itens had the following electrical conditioning opplied to them five houts prior to stort of Phase 1 LOCA: .
c) All 250 MCM test tiens t 230 omperes RMS,1.1 volts RMS. j i b) All 2/0 AWG tut Itens - 150 ompera RMS, 2.1 volts RMS, c) All #10/'12 AWG test itens - 15 ompwes RMS, 7.7 volts RMS,
-l d) All #14 AWG test items - I omperes RMS, 600 volts PMS. j e) All # 16 AWG tut Itens - I omperes RMS, 300 volts RMS, l These cordillors were nulntoined on the test Itens for the first ten minutes f
! of Phase I LOCA environment.
'6.6.2 Phase 1 LOCA environment began with the introduction of steam into the tat.
t chamber. Test chamber presure end temperature chorocteristles obtained from
., ! time to (start of stoom) to To + 30 minutes is os follows:
l Chamber Presure Chambw Temperature j Time (Psig) , *F)
! To 0 109 l
T o + 30 s ee . 24 2 53 To + 60 sec . 45 282 T o + 90 sec . 48 285 9 -
i i To + 120 sec . 57.5 290 To + 180 sec . 48 282 l
To + 5 min. 48 283 To + 5 min. 49 289 To + 10 min. 56 300 To + 15 min. 47 293 .
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N O , IPS - 107 1 Clembw Pressure Chon6w Temperature Time (Pilg) ('F)
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T o + 20 min , 47 2 95 I 4
io + 25 min. 48 299 !
To + 29 min. 47 -297 i
j To + 30 min. 45 294 I 6.6.3 At To + 60 seconds, o decontaminant spray was introducted into the test chamber onto the test Itens. This decontaminant solution cornisted of a
' water spray with the following chorocteristics:
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o) Boron Content - 0.23 molar (approx.1900 ppm). ;
- b) NoOH Content -
10 ~4 to 4 x 10 -2 molo l .
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- c) pH - 7,7
- d) Temperature
- +190*F !
e) Sprey Rote: 10 gallors per minute.
f) Amount Available: 310 gallors.- At the given sprey rate of.
4 10 gallons /per/ minute, the test Itens had j this initial solution sproyed onto them for the !
- fird 30 minutes of the' tut . !
i . >
16.6.4 At To + 10 minutes, the test itens wwe elec.fricolly de-energized, and IR i
Test No. 6 was performed.
l
'6.6.5 Phase 1 LOCA condittorm were held on the test itens for a total of 30 minutes, i ;
r j6.6.6 Phase 11 LOCA erwironment began at To + 30 minutes. At that time, the steam ;
input to the test chamber was shut off, and a fmh decontaminant solution ,
from Tonk B was sprayed onto the test itens. This new solution had !
chorocteristics identical to those described in 6.6.3 except as follcws:
I '
l c) pH -
7.8-
} b) Temperature -
114' F
.L
, l' 5
Page 11.-
_._.._._2__._._._._-.- .._. _ . _. _ ___. a_._. _ _ _ _ = - . _ _ .
l CON Ax CDr1POk AT!N.
! CONAX w> ue ntu "enu A UNil OF LSTEHLINE COMPOR ATION N O. IPS - 107 1
I 6.6.7 Secom was diverted into the Bork B solutlen es required to rotse the solution terrperature. The test chomber tenperoture was, in turn, gavuned by the
- decontaminant solution temperaturu. The test cfomber pressure and terrperature i
for the first 30 minutes ef Phase 11 LOCA (To + 30 mln, to To + 60 min.) were os follows:
Cfomber Pressure Chamber Termeroture Time (Psig) (*F)
To 4 30 min. 45 294 5
T o + 30 min., 35 see . 0 224 T o 4 31 min . 0 209 To + 32 min. 0 177 T o + 23 min . 0 158 To + 34 min. 0 1 51 0 1 53 i .T o + 35 mi n .
i T o + 40 mi n . 0 1 50 i To + 45 min. 0 146 i T o + 50 mi n . 0 145 T o + 55 min . 0 145 4
T o + 60 mi n . 0 144 The test chamber pressure and temperature were held to O psig and 140' to l6.6.8 j 150' F respectively for the next 240 hours0.00278 days <br />0.0667 hours <br />3.968254e-4 weeks <br />9.132e-5 months <br />. During this time, the decontaminant solution was continuously sproyed into the test clember, collected and re-cirevloted back into tl.a . goy system. Somptes of the decontamirent solution
! were token dolly and orelyzed for pH ord boron content, i
- Page 12 9
a
c.u. anno. . - -
, CONAX nwwrw % 1 A UNt1 F t STERLINL' CORPO34M 40N
! L
( ~
N O IPS - 107 I 6.6.9 During the course of Phase 11 LOCA erwironment, the use of steam to hoot the decontaminant solution required periodic druleing of Tonk B to keep the .
level down. A new solution was peepared in Tonk A with the storting !
chemistry de+cribed in 6.6.3 and used to replace the Tonk B solution in ,
wotor spray setem. Cfongeover was pwformed to To + 109 hours0.00126 days <br />0.0303 hours <br />1.802249e-4 weeks <br />4.14745e-5 months <br />. This Tonk A solution as used for the renoirdw of Pfose ll LOCA.
6.6.10 Details of boron analpls on the decontaminant solution used in the water spray system are ce<*alned in Appendix D. The pH determinations for the ,
solution used are also con +ained in tfot Appendix.
1 6.6.11 The test liens were electrically energized at rated current or voltage os applicable p r 6.6.1 for of least five houn of every 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> interval during Plose ll LOCA.
. 6.6.12 Irsuk tlon resistance measurements were taken on each test item offer the energization period ord the reading recorded. Doto occumulated from these readings are contained in IR Test Nos. 6 thru 16 of Apperdix B.
6.6.13 Hi-Pot tests were scheduled to be performed offer each IR Test of 6.6.12, itcwwer, tiese tests were discontinued offer IR Test No. 6 because of frequent teokage ord brookdown conditions imminent from tie test Itens i
. under erwironment. To preclude any possible cable donage due to repeated i '
l' Hi-Pot Testing, it was decided, with Stone and Webster concurrence, to procure one final set cf dato offer completion of Pfose ll LOCA erwironment.
Hi-Pot dato are contained in the Data Sheets of Appendix B.
. 6.6.14 Floshover Test - At time To + 164 houn, the circuit of Figure 4 of Appendix A was implemented onto test Itens TE 14) through TE 146 inclusive ord TE241 tirough TE246 Inclaive. This circuit allowed those terminal block test termirettors to have o voltage potential opplied between adjacent termlrols.
Intermittent flashover would be Indicoted by a heavy loading on the voltage =
source. F loshover testing was applied to the above mentioned test liens of i oli times outside of IR moosurements or roted power energization. This l omounted to opproximately 64 hours7.407407e-4 days <br />0.0178 hours <br />1.058201e-4 weeks <br />2.4352e-5 months <br /> of flashover testing on the above
- I mentioned test Itene.
f 4
l
[4 Page 13 t I- ,
r-1 CONAX 2330 WALDEN AvtNut BUFF ALO. Nfd. YOA A 1444)
A UNIT OF ESTEHLINE CORPOH ATION
( ,
7--
NO. IPS - 107 7.0 TEST RESULTS 7.1 Apperdix E contoirs the orolyses (occording to test termiretion and corductor size) of the dato of Apperdix B. These graphs deplet a plot of minimum value dato points observed from the test population (total number of test points involved). .
7.2 The dato of IR T est Nos. 6,6A, 7, and B were determitied involld for analysts due to instrumentation difficultles, it was fourd ifet the rnegohmmeter secondary was Intermittently being coupled to earth grourd through the operoflorcl test chamber spray system. Mete- : solation elimircled the arrant readings produced by this condition.
7.3 Continulty to the following test items was lost from the Initial assembly of the test efomber lordware and consequently, there is no dato ovallable in them throughout LOCA testing.
T est T ermiration Descripilon T E 2-07 #14 AWG ternitrol block T E2-08 #14 AWG terminal block T E2-09 #14 AWG termlrol block SPE2-07 # 14 AWG enclosed field s all:es SPE2-08 #14 AWG enclosed field splices SPE2-09
- 14 AWG enclosed field splices CEl-01 #14 AWG test control sorrple CEl-02 # 14 AWG test control somple C El-03 1 14 AWG test control sompte CEl-M #14 AWG test control samp!e CEl-05 # 14 AWG test control sonple C El-06 # 14 AWG test control sample CEl-07 # 14 AWG test control sompte CEl-08 # 14 AWG test control somple j
! Later investigation reveol*J that iv. proper assembly of two packing g!cnds onto
' the test chamber header funge catsed these corductort to be broken of the packing gland .
]
t i !
Page 14 I
- i
- i
Q CONAX No. IPS - 107
. v.. < ,. u . v. . u ,4. .. , . . . . ..
j cum..conr',ommN i .
.s, . , ~ . ~. ..n 7,4 Visual inspection of the test items ifoued th:t the common cause of low IR '
readings on particular field splices during LOCA corditions was due to the I polyolefin sleeving over the solica splittino ord opening from the LOCA high
' temperature corditiors. This was especially prevolent with the large size, I (2/0 A% G ond 250 MCM) non-enclosed, field splica, Splitting of the polyolefin l sleeve could have been opitettd at the firol ossembly of the hmder flenge to l t he t est cha mber . These iterm did recover to higher IR readin:s ofter LOCA l environment . Low IR toodings from #14 termimi block test iterrs were caused from nlcks in the kopton irsalation of the penetration corductors of the test
, chamber header finnge. l.o ever, there was no discerroble cause for the low ;
IR roodings from the #10/12 AWU ter r.irettors os such.
7.5 During Picse i LOCA corditlom, the strorded field cables brought outside l the test clomber lod coniemed steen trickling out from between the jocketiro j 3
arvi stronding. However, inis did not cause any difficulties in circuit operation. l l
l 7 . c- Examimtion of Enclosure I immedletely citer renovel ' rom the test chnmber showed tfot 2 of the 4 termirol blocks contained irside had come loose frorn
! the mounting roll.
I I
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Page 15 l
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- CONAX m ,.w. w . n y l A urv iT or a sTrnuNE conpInuioN DM C W' C
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N O. IPS - 107
8.0 CONCLUSION
S i 8.1 Gomne irmdlotiors fod no noticeable effect on test item perfornonce through-out the entire test effort.
8.2 Compared on a common bosts, Enclosure 1 test lierra shcwed consistently lower IR choroeteristla tien Enclosure 2 test Itens. The dliference was all within the sorne order of nognitude, but cause connot be occurotely isolated as te coble fitting tronufacturer or thertrol oging.
8.3 Enclosed field splice terminotlors tended to perform nearly equal to termiral block termirollors.
8.4 There was no eviderce of flashwer condiflors from the testinD of 6.6.14 ;
8.5 The low lR readints indicated on the graphs of Apperdix E were very much common to the #10/#12 AWG conductor termirettors. Visual inspection revealed no e opporent donnDe to penetrollon conducters of this group.
O.6 The loosened termtrol blocks mentioned in 7.6 oppoor to have been caused at the installotion of Enclosure I into the test chomber. The room ovallable to irstall this encicsure into the test clomber code it necessary to eart considernble force on the enclosure to Irstall it, and the terminal blocks loosened os o result of t his ,
i i
f i
Pope 16
.I
CON te. COPPOQi' CONAX .- ax <mnus o.;
l t. UN61 Or I STEHL INE COF4POR ATION
( ,
- i 1
1 APPENDlX A I
Test Conductor Infornation i
Test item Nomenclature l
! Test Focility Schenntic I .
l 'l est Cirevit Diagrarrs I
4 i
I.
4 I
' i
'i 4
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A UNM bF [$TERUNE Conp0R A? TON BUF6 40, NEW N P' ** . '
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e TEST ITEM NOMENCLAT WE l -
}
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t 3
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-> Termination identity i
(
-> Locotton of Termimtion ,
i El = Encloswe 1 .
E2 = Encloswe 2 :
Blad = Outside of Enclaswe ;
.3
- _ _ > Termination T ype T = Twminal block SP = Spilce C = Control Tr,t Somple i
Exampin: T El-01 refers to Terminot #1 of Encloswe 1 terminal blocks.
SPE2-02 refers to enclosed field splice #2 of Encloswe 2.
SP-04 refm to field splice, not-enclosed, item number 4 4
3-a g.
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CONAX CORPOA AVION f
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I APPENDIX B Test Dato Sheen i
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- .- once.o no 7 i> (/ ?) l INSULATION r.ESIST ANCE TESTS DAT A $PEET B ,,u. em IPS _3_2 8
/J.CiENT CH AM3 E*; T E.'.t., 7t* 'F N '"
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TIME TES1 STARTE0: C9/5 ,
TIME TEST FINISHED : I CONDUCTOR T EST RAl ED VOLTS T EST VOLTS SIZF. COND. NO. (VDC) (VDC) ._ l. (OHMS) ___ R EIAA_WS . . . . . . _ . ..
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l l FIGURE 13 l-I PRE - AND POST - AGE CONDITIONS OF ENCLCSURE 1, i
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