ML19270H799

Final Deficiency Rept Re Slits in Jackets of Class IE Small Power & Control Cable.Slits Occurred During Mfg Process. Cables Mfg to Date Will Undergo 100% Visual Insp for Slits. Deficient Cables Will Be Returned

ML19270H799
Person / Time
Site:	Perry
Issue date:	12/19/1979
From:	Davidson D CLEVELAND ELECTRIC ILLUMINATING CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8001030630
Download: ML19270H799 (20)

Text

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,l THE CLEVELAND ELECTRIC ILLUMIN A. TING COMPANY ILLUMINATING SLDG. o Pt!BLIC SQUARE e CLEVELAND, CHIO 44101 m TELEPHONE (216) 623 1360 e MAIL ADDRESS: P.O. 80X 5000 Datwyn R. Davidson viCE PAESiDENT SYSTEM ENGINEEAiNG AND CONSTRUCT 4CN Dece=ber 19, 1//9 Mr. James G. Keppler Director Regien III Office of Inspection and Enforce =ent U.S. Nuclear Regulatory Ccc=ission 799 Recsevelt Road Glen Ellyn, T11 Mois 60137 RE:

Perry Nuclear Power Plant Final Report en Slit Jacket en Class IE Scall Power and Centrcl Cable

Dear Mr. Keppler:

This letter constitutes the final report required by 10C7E50.55(e) on the deficiency concerning slits in the jackets of Class II s=all pcwer an:1 centrol cable. Ihis ite= vas first discussed in a telephone con-versatien between W. J. Kacer and T. A. Boss of The Cleveland Electric Illu=inating Co=pany, and Mr. Jack Hughes of the NRC Regicn III, Office of Inspection and Enforcement en October 3, 15179 An interim report was later sut=itted to ycu en October 31, 1979 Descriptien cf Deficiency The Rockbestes Cc=pany was centracted by The Cleveland Electric Illuminating Cc=pany to canufacture Class IE s all power and control cable for the Ferry Nuclear Power Plant. During installatien of this cable in nonsafety-related syste=s, it was discovered tha.t the cable jacket was slit in a nu=ber of locations. Further inspection revealed that 12 out cf 65 reels of cable inspected contained slits in the cuter Hypalen jacket. Frc= the 12 reels centaining slits, approxi=ately 64 sa=ples were taken in an attempt to determine the depth of the slits.

Inspecticn of these samples under a calibrated =icroscope revealed that the average depth of the slit was 26.8 mils with a range of 4 to l'?

=ils deep.

Discussion of this prcb % with Rockbestos representatives revealed that the slits cccurred duriag the manufacturing process. During extrusion, an outer jacket is placed over the Hypalon jacket to aid in the curing process.

After curing is cc=pleted, this outer jacket is re=cved by A

D\\

1678 006 O

8001030 9

Mr. James G. Keppler Dece=ber 19, 1979 longitudinally cutting, then peeling off the curing jacket.

It has been determined that the cutting is being rade too deep in some in-stances and cutting the Hypalon jacket.

Analysis of Safety Implication 3ecause of the depth of the slitting which occurred on this cable, there was some concern that the cable assembly was &nged severely enough so that it could not meet basic safety requirements and that incipient faults could occur. Since it is felt that such a fault could adversely affect the safe operation or shutdown of the nuclear power plant, extensive evaluatica was necessary to determine the exact impact these slits would have en the electrical system of.the plant.

Corrective Action Since it was deter =ined frc= cur inspection that the jacket was anmnged to the point that it could not provide its intended function, we atte=pted to show the cable cculd meet design requirements without the jacket.

In order to de=cnstrate this precise, it was necessary to:

1.

Conduct flame tests on cable with a portion of the jacket re=cved, in accordance with IEEE 383 2.

Conduct the follcwing UL Standard tests to de=onstrate the inner conductors were rated type XHEW (capable of being pulled without a jacket):

a.

Crushing Test - Method I b.

Glancing I= pact Test c.

Original Tensile and Elongation d.

Cold Bend e.

Defor=ation f.

Dielectric Breakdown After Scoring

'P" e all $2ese tests were conducted with satisfactory results (See At-tachment 1), there were still sc=e questions concerning the oil re-sistivity of the cable and that oil resistance capability of the inner insulated conductors would have to be evaluated.

It was i==ediately determined that the insulation could not meet the oil resistance requirements of UL Standard M or ICEA Standard S-68-516. However, a less stringent oil resistance test was conducted and its results are outlined in the attached Ecekbestos December 10, 1979, report (see ).

1678 007

Mr. James G. Keppler sece.mb er 19, 1979 In addition to the above menticned tests, a statistical armlysis was made of the probability of cutting into the individual insulated con-ductors. From the 84 sa=ples of slits taken, we were able to partition the study into two groups:

1.

Cable greater than.62" diameter.

2.

Cable less than.50" diameter.

Usin6 a Normal distribution curve, the following probability was calculated:

1.

For cable diameter greater than.62" and minimus je.cket thickness of 48 =ils to 64 =ils; 10% chance the slits would be at least 72 mils deep, a.

b.

% chance the slits would be at least 80 mils deep, 1% chance the slits would be at least 97 mils deep, c.

d.

.1% chance the slits would be at least 117 =ils deep.

Tnese figures indicate a significant probability that a slit could penetrate the jacket and da=a6e the conductor'c insulation.

2.

For cable diameter less than.50" and minh-mm jacket thick-ness of 36 =ils to 48 mils; 10% chance the slits would be at least 31 mils deep, a.

b.

$ chance the slits would be at least 34 nils deep, 1% chance the slits would be at least 41 mils deep, c.

d.

.1% chance the slits wculd be at least 50 mils deep.

These figures also indicate a significant probability that a slit eculd penetrate the jacket and damage the conductor's insulatien.

Frcm the results of this analysis, it wac concluded that one or more of the following corrective actions would be taken:

1.

Any Rockbestos Class IE small power and control cable manufactur-ed to date, will undergo a 100% visual inspection for slits or inclusions prior to being utiliced in the ccustruction of the Perry Nuclear Power Plant. The inspection will consist of a 360 inspection er the cable Jacket, and will be perfor=ed under suitable env1.-Onnental conditions by inspectors qual 4 fled to Level II of ANSI N45.2.6. These inspectors will then document their inspection by signed inspection reports.

In additien, measures will be established to indicate the status of inspection by stenciling and/or physical segre6atien of aceded, rejected and uninspected cable.

1678 008

~

.' Mr. James G. Keppler December 19, 1979 2.

Any cable ubich is not to undergo inspection er is found to centain slits er inclusiens will be returned to Rockbestos and replaced by another manufacturer or by Rockbestos using a different stripping operation.

Su==ary Although tests cenducted show that the individual conductor insulation is rated. type XEW (suitable for being installed without a jacket) by UL Standard tests, a statistical analysis shows that there is reason to suspect damage may have been done to the individual insulated cen-ductors and thr.t this da= age could jeopardize the safe operation and shutdown of the Perry Nuclear Pcwer Plant. Fcr this reason it was decided that no Class II smil_ power or centrol cable received to date will be utili::ed without 1COfo inspecticn, and that any cable which does not undergo full inspection er is fcund to be deficient will be returned to the manufacturer.

Very truly yours, l.,/. '

l M

,,T'a-Dalwyn/R. Davidsen Vice President System Engineering and Construction DRD/ge Attachments cc: Victor Stello, Director Office cf Inspection and Enforcener.t U. S. Nuclear Regulatory C 4ssicr.

r Washingten, D.C.

20555 1678 009

ATTACHMENT 1 D

REC TI-IE IROCKI3ESTOS COM F%N Y DEC usw uven.counten:m osso4 usa namous: con mm nuxm - *

,45$ls'suNet Dece=ber 10, 1979 S -56O Name: -

File Ccde: GO Toss Mr. David R. Green FROM: SO/DC /

DATE ; A) pi,h o Senior Proj ect Engineer..

s COPIES TO: W OC The Cleveland Electric I1EEfra.t i. 3 C-O. h c/o Ferre Nu lear Power Plant QUAUTY ASEURANCE g g%

?. O. 3cx 5000 DEPARTMENT

,n %,

Cleveland, Ohio 44101

Dear Mr. Green:

'a'e offer the following as a supple =ent to our report dated Nove=ber 20, 1979, 1.

Results of fur-her oil resistance testing.

2.

Long ters moisture resistance data.

35CgW D 3.

Analysis f pr bability of jacket stripping knives c.itting significantly

~

r..,

into conductor insulation.

DEC Iach of these ite=s is discussed in detail below:

PN 1.

Oil resistance testing Unjacketed 14 A'n'G Firewall III ASTM #2 oil at 70*C.

Original 4 hrs.

112 hrs.

T PSI i%

T PSI E:

T PSI E%

3 lack 2468 460 1971 400 1883 371 0.ite 2276 465 1923 450 1298 262 Red 2414 482 2019 400 1900 331 Green -

2435 353 1827 300 1971 345 Attach =ents A and B show plots of the average tenciles and elo=gations, criginal and aged in oil. Assu=ing the aging curve to be linear, 50% of criginal tensile would occur at 360 hours0.00417 days <br />0.1 hours <br />5.952381e-4 weeks <br />1.3698e-4 months <br /> and 50% of original elongation would occur at 252 hours0.00292 days <br />0.07 hours <br />4.166667e-4 weeks <br />9.5886e-5 months <br />.

2.

Lenz tc = moisture resistance data Attach =ents C and D depict typical noisture resistance data for Fire-wall III while cer.tinucusly energiced with 600 volts in 90*C. water for one year.

1678 010 aw(vstsert te.aa :.,;egy,

TH E IROCI<I3ESTOS CONII RNY

*** ^ " ' O Mr. David R. Green - CEI x to Dece=ber 10, 1979

..sr 2

3.

Analysis of probability of jacket stripping knives cutting significantly into conductor insulation a.

Jacket and mold thickness considerations.

The table below cc pares IPCEA jacket thickness requirements (S-19-81 Table 4-18) with Rockbestos curing =old thickness requirements (Stan-dards Engineering Manual Part D9 page 3.05).

Dia=eter under Nominal jacket Curing mold jacket (inches) thickness (mils) thickness (=ils)

.250 -.425 45 40

.426 -.700 60 40

.701 - 1.500 80 50 1.501 - 2.500 110 60 If we assu=e mini =us spot jacket thickness of the a ol able 80ll: of l?CEA neminal, and if we assu=e a =old stripping knHe setting of 7/8 of the cold thickness, we have the following revision of the above figures.

Dia=eter under Mini =um jacket Depth of knife jacket (inches) thickness (eils) setting (mils)

.250 -.425 36 35

.426 -

.700' 48 35

.701 - 1.500 64 44 1.501 - 2.500 88 53 If we nake the further assumption that for some reason, af ter the -

~'a1 stripping knife setting, the thickness of the polyethylene molc'

.oint in the length is redmd to 10 mils, it can be seen that the st.-

_g knives vill not penetrate the full thickness of :be jacket, and will there-fcre not cut into the insulated conductors. The worst case is illustrated below:

Jacket thickness 36 mils Knife setting at 40 mil cold thick-35 mils ness Penetration of knife into jacket in the 25 =ils event of cold thickness reduction to 10 =ils (a reduction of 752). Note that knife guides ride in outer surface of curing =old.

Thickness of jacket re=aining not 11 cils penetrated by knife under amove condit* ""

1678 011

"I'l-IE IROCI<I3ES'I'OS CO.N II RNY CD"* ^ N

• Mr. David R. Green - CEI

^T Dece=ber 10, 1979

32 3

In addition, a 2 mil binder tape covering the conductorsi under the jacket, provides additional protection against accic' ental da= age.

Therefore, while tM possibility exists for curing mold stripping k=ives to cut into outer jackets *f cable, there is practically no probability of any of these cut.,

2etrating significantly into the conductor insulation.

b.

Inspection of cable for Ferry Nuclear Power Plant for preseur.e of jacket slits and analysis of speci= ens conenining slits Nu=ber of reels of cable inspected - by CEI 30 by Rockbestos 35_

Total 65 reels Ecuip=ent: Bausch and Lomb Stereo Microscope, Unit No. SZ-1

'r.

calibrated.4/24/79, next due April,1980.

Representative sa=ples of slit jackets cut from each reel were exam-ined to determine the depth of slitting, including any penetration into the binder tape and insulated conductors. The thickness of the jacket vall re=aining beneath the slit was also recorded. See Attachment E.

Of a total of 8.1 speci= ens =easured, four displayed measurable abra-sicus of the insulation, none to a depth exceeding 1/2 to 1 mil.

All of these were in the sa=e six-foot section of reel B3603, 2/C 6 AWG.

This reel also contained six other cuts through the jacket in the scne general eleven foot area. It should be noted. that fifteen of the Si s;eci= ens exa=ined were f ro= this eleven foot section of reel B3603.

The increased inspection was perfor=ed in order to assess the unusually deep slitting found in this area of reel E3603.

? o speci= ens frem a secend reel, G010214 4/C 14 AWG, contained slits which penetrated the jacket and binder tape, but which caused no meas-urable abrasion of the insulation.

One speci=en from a third reel, 31248 9/C 14 AWG, contained one slit which penetrated the jacket, but did not affect the binder tape.

1678 012

a-d "I'I-I E I ROCI{13ES'I'()s COM I RNY co~ m a u-twto Mr. David R. Green - CEI eate Dece=ber 10, 1979 not x

In none of the other 68 specimens did slitting penetrate the jacke'..

T e depth of slits ranged from 4 mils to 87 =ils, with a m1an depth of 23 mils. The jacket thickness re=aining beneath the slit ra:ged from 0 =ils to 68 =ils, with a nedian re=aining thickness of 30 =11s.

Very truly yours, TEE ROCK 3ESTOS COMPANY

/

0 G. G. Littlehales Manager, Quality Assurance ebu e=c.

cc:

E. J. D'Aquanno R. G. Boudon F. R. Post =a E. S. Reed 1678 013

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ROCKBESTOS FIREWALL* Ill Typical Moisture Resistance Data While Continuously Energized with 600 VAC in 90*C Water SIC

% PF Stability Factor Months IR CH IR CH IR CH Initial 2.5 3.0 1.0 1.4 0.00 0.20 1

2.6 3.0 0.8 1.8 0.00 0 30 2

2.6 3.1 0.9 1.7 0.10 0.20 3

2.6 3.2 0.9 2.1 0.00 0.60 4

2.7 3.3 0.9 1.8 0.00 0.50 5

2.7 3.4 0.9 1.8 0.10 0.30 6

2.7 3.5 1.1 1.8 0.10 0.40 7

2.7 3.6 1.0 1.5 0.00 0.20 8

27 3.6 0.9 1.9 0.00 0.40 9

2.8 3.6 1.0 1.7 0.10 0.20 b

~-

10 2.0 3.7 1.0 1.6 0.00 0.20 11 2.8 3.7 1.0 1.6 0.10 0.30 12 2.8 3.8 1.0 1.5 0.00 0.20 IR = frradiation cross-linked CH = Chemically cross-linked Sa :[l es : #12 AWG with 30 mils of insulation.

- J. R. Marth 10/30/79 S

1678 015

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O ROCKSESTOS F1REVALL Ill Typical Molsture Resistance Data While Ccntinuously Energized with 600 VDC (neg.) in 90*C Water SIC

% PF Stabili ty Fa-ro-M:nths IR CH IR CH lR CH Initial 2.6 2.7 1.0 1.4 0.00 0.02 1

2.7 2.9 0.8 1.2 0.00 0.00 2

2.7 3.1 0.8 0.7

0. O 0.00 3

2.8 3.3 0.9 0.8 0.00 0.00 L

2.8 3.4 0.9 0.8 0.00 0.10 5

2.8 3.6 0.9 0.8 0.00 0.10 6

2.8 3.6 0.8 0.7 0.00 0.00 7

2.9 3.7 1.0 08 0.00 0.00 8

2.9 3.7 0.9 0.9 0.00 0.10 9

2.9 3.8 1.1 1.2 0.19 0.20 g

10 2.9 4.0 0.8 1.4 0.10 0.50 11 2.9 4.0 0.9 1.8 0.10 0.70 12 3.0 4.1 0.9 1.9 0.10 0.90 IR = Irradiation cross-linked CH = Chemically cross-linked Sa-Oles:

!!2 AW3 with 30 mils of insulation.

- J. R. Ma r *.h 10/30/79 k

1678 016

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ATTACEMENT E.

MEASUREMENT OF JA,CKEI SLITS location Jkt.

Depth of Remaining in Reel Thickness Slit Wall (Feet)

(Mils)

(Mils)

(Mils) 33603 1463 50 50 0

2/C 6 1656 89 23 66 3961 54 14 40 1483 71 31 40 1656 90 48 42 1456 50 51 (1) 1460 53 53 0

Mark on insul 1460 55 55 0

Thru binder 1456 54 54 0

Mark on insul 1454 48 48-1/2 (1/2) 1453 55 55-1/2 (1/2) 1458 70 70 0

Mark on insul 70 (1/2) 1460 1452 55 55 0

Thru binder 1454 58 58 0

Mark on insul 309'O 1870 45 33 12 2/C 4 1866 43 18 25 1904 58 25 33 49 23 26 E2115 669 64 29 35 2/C 10 G9655 6435 55 18 37 3/C 14 6403 67 12 55 6369 60 20 40 6437 60 30 30 E002 2976 57 17 40 3/C 10 2980 48 14 34 2976 47 11 36 2976 46 OS 38 2978 58 13 45 2974 24 15 9

29f3 40 16 24 E2559 4773 40 12.

28 2/C 14 4776 44 20 24 4774 55 04 51 4779 35 09 26 4780 55 15 40 4775 50 09 41 179 50 21 29 4590 46 07 39 757 58 19 39 1678 017

2.

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MEASUREMENT OF JACKET SL1TS ATTACHMENT E" Loestion Jkt.

Depth of Re:naining in Reel Thickness Slit Wall (Feet (Mils)

(Mils)

(Mils) 32559 4774 55 14 41 2/C 14 3448 41 10 31 4250 62 08 54 2052 36 20 16 4314 36 19 17 66 80 12 68 24 60 20 40 135 55 16 39 100 57 14 43 104 65 10 55 110 46 70 26 110 50 19 31 118 46 23 23 124 42 28 14 125 45 24 21 146 46 19 27 C010214 235 33 15 18 4/C 14 1544 36 30 6

1544 40 07 33 252 35 33 2

256 41 34 7

25:

41 34 7

258 33 29 4

260 40 36 4

262 40 40 0

Mark or insul 2050 38 22 16 2062 40 40 0

Thru binder C0614 1756 65 21

.44 5/C 14 2990 70 30 40 4002 40 25 15 C1133 38 65 20 45 9/C 14 1204 60 15 45 2110 62 25 37 C1556 1C91 90 45 45 9/C 14 61 70 4G 30 34 63 23 40 13 98 33 65 C1248 1620 93 45 48 9/C 14 1630 85 42 43 1650 87 87 0

C1473 679 70 50 20 9/C 14

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• ATTAChliENT 2 c.

'I'l~i b3 I Y O C 1 5 1 3 h3 N "l'( ) N C ( D I I % N Y ' t NEW M AVEN.CQNNECTICUT 06504 USA TELEPHohE (203)712-2250 TELEX: 710-4e5 2149 Nose =ber 21, 1979 ~ Mr. David R. Green Senior ?roject Engineer '~he Cleveland Electric Illuminating Company c/o Ferry Nuclear Power Plant ?.0. Box 5000 Cleveland, Ohio 44101

Dear Mr. Green:

Attached is the report of testing performed in accordance with your letter to Mr. E. J. D'Aquanno dated November 5, 1979. As agreed at our meeting with T. A. Boss and E. C. Willnan en November 16, 1979, this is an interim report. We plan to submit a final report by Nove=ber 30, 1979 con-taining further oil test results and including data and analysis to establish the probability of cable slitting affecting conduc-tor insulation. Very truly yours, TEE ROCK 3ESTOS COMPANY Q G. G. Littlehales Q. A. Manager cc: E. J. D'Aquanno R. G. 3ouden F. R. Post =a E. S. Reed C-OL/ Attachnent ~ 1678 021 a utwun :< tat wow:= caour

.M. 4 TI-I E 1 ROCK 1.3ESTC )S COA 11 W N Y 'I NEW HAVEN.CCNNECTICUT 06504 USA TELf PMcNE. (2C3) 772 2250 TELEX; 710-465 2149 November 20, 1979 Test Report CEJIu.w : Ic deter =i=e whether the serviceability of Rockbestos Firewall III cables would be aff ec:ed by the presence of occasional s=all slits in the overall jackets. DISCUSSION: Tce intent of the f ollowing testing is to si=ulate the most severe conditions to which cable would be subjected if a portion of the overall jacket were re- =cved du-i=g installation. It is assu=ed that a small slit in the cable jacket could possibly lead to tearing during installction, exposing the underlying cenductors to =echtnical and environmental stress. It is no:ed that all of Rockbestos IEIE 333 LOCA qualification testing was per-fer ed on unjacketed single cenductors. The overall jackets played no part in the qualification. It is also ncted that Firewall III conductors are UL XHhk, designed for use without everall covering. The UL 44 tests performed in this series are de-signed to de= castrate the suitability of XHEW for this type of application. These tests also demonstrate the confor=ance of Rockbestos Firevail III insu-lation to 2.=nd require =ents. ' SPECIMINS FOR TESTS: - All speci= ens were taken frcm one 300' length of standard 4/C 14 AWG Firewall III. This cable was identical in materials and constniction to that supplied to Terry Nuclear Power Plant. All tests except the conduit pull test were per-for=ed on single conductor specimens taken from this length. DESCRI? TION OF TESTS: Tne felleving tests were perfor=ed: 1. Si ulated severe installation procedure (conduit pull test) 2. UL LL u.=J Tests Crushing Test - Method I a. b. Glancing I= pact Test Original Tensile and Elongation c. d. Cold 3end e. efer ation f. Dielectric 3reakdown After Scoring i 678 022 3. 011 Resistance Test ~ a notwa!a CF twt taasucee Gnove

(2) Nove=ber 20, 1979 Test Report This testing is described in further detail below. Note that all calibrations were perforned using standards traceable to the National Bureau of Standards, and are next due fer calibration one year from the date listed. 1. Sirulated Severe Installation Procedures

• Iquip=ent:

a. 25 ft. continueus run of standard one (1) inch metal conduit, consist-ing cf a straight 10 ft. length and four 900 bends, each with a 6 in. radius and 5 ft. straight runs between each bend, b. Chatillen type 160, 300 lb. capacity dyuameceter, Unit calibrated S/13/79. ?eschel Electronics, Inc. high voltage AC test set Serial #745. Unit c. calibrated 4/3/79. Precedure: a. 25 ft. speci=en of 4/C 14 AWG Firevall III with the jacket and binder tape rencved was pulled through the above conduit run. Fulling tension was centinuously =enitored. No lubricant was used. Af ter the pull, the specinen was exa=ined for da= age. The above cycle was repeated for a total of four eycles, af ter which the specinep,assed a 3.0 KV AC one minute dielectric test after t=nersion in water or approxi=ately six hours. The speci=en showed no significant da= age after aqy of the pulling cycles. Fulling Te cions Cycle No. Tensica CEbs) 1 100 - 215 2 80 - 120 3 80 - 220 4 100 - 280 These pulling tensiens produced sidewall pressures of 160 to 560 lbs, averaging approxi=ately 300 lbs. (See Reckbestos test report dated S/23/79 f or additional details and phet graphs of apparatus). 1678 023

(3) Nove=ber 20, 1979 Test Report ~ 2. 7 44 IEF' Tests a. Crushing Test - Method Iquip=ent: Instron Tester, Unit 1131-58-442 - calibrated 4/28/79 Require =ent: Average of 10 speci= ens,1200 lbs. min. Results: 1 Green 1290 lbs, 2 Red 1600 3 Elack 1950 4 White 1200 5 Green 1180 6 Red 1500 7 Slack 1850 8 White 1720 9 Green 1270 10 White 1620 Average 1518 lbs. b. Glancing I= pact Test Equip =ent: Hipotronics AC Dielectric Test Set, Model 7100 calibrated 4/13/79 Require =ent: 3reakdown potential not less than 20%' of avg. breakdown potential of six speci= ens not subject to i= pact. Avg. six speci= ens not subject to i= pact 23.9 KV Acceptance criterion 5.8 K7 Results: I=pacted Speci= ens 1 Black 15.0 KV 2 White 20.0 3 Red 23.8 4 Green 25.2 5 White 20.0 6 Green 27.0 c. Original Tenaile and Elengation Iquip=ent: Instron Tester (See 2.a. above) Require =ent: Tensile 1500 psi elongation 150% 1678 024 e + e-w+- p -..e wwe....e. e.-

(4) Nove=ber 20, 1979 Test Report Results: 1 Black 2468 psi 460% 2 White 2276 465 3 Red 2414 482 4 Green 2435 353 d. Cold Bend Equipment: Cold Chamber #682185 - calibrated 2/5/79 Eequirement: No cracks in specimens Cenditioned -250C for 42 hours using a bend mandrel.34 in, dia=eter Eesult: No cracks 0 e. tefor=ation 121 C Equipment: A=es 282 defor=ation gauge - calibrated 9/28/79 Leeds and Northrop Te=perature Recorder #F77-57206-1-1 (Oven 6) - calibrated 7/16/79 Eequire=ent: 30% =ax. Results: 1 Black 11% 2 White 12% 3 Red 19% 4 Green 15% f. Dielectric 3:eakdown After Scoring Equipment: Hipotronics AC Dielectric Test Set (See 2.b. above) Eequire=ent: 3:eakdown potential not less than 25% of avg. breakdown potential of six unscored speci= ens. Avg. six unscored specimens 27.6 K7 A:ceptance criterion 6.9 KV Results: 1 Black 23.0 KV 2 White 29.5 KV 3 Red 26.0 KV 4 Green 17.9 KV 5 White 29,8 KV 6 Green 17.8 KV 1678 025

(5) November 20, 1979 Test Report 3. Oil Resistance

• Equip =ent:

Instron Tester (See 2.a. above) Leeds and Northrop Te=perature Recorder, Oven 16 (See 2.e. above) Precedure: 4 hours in ASTM No. 2 oil at 700C. Require =ent: Tensile 750 psi, Elongation 75% Results: 1 Ilack 1971 psi 400% 2 '#2ite 1923 450 3 Red 2019 400 4 Green 1827 300

• N:te: This is an interis report. Additional testing is being performed, results of which will be included in our final report.

Cenclusion: Unjacketed Firewall III cable meets the requirements of all the foregoing tests. Therefore, removal of a portion of the outer jacket before or during installation will not i= pair the ability of the cable to perform its function as specified and will not lead to damage during normal installation procedures. Da e of Test: Nc-enber 15 and 16,1979 at The Rockbestos Company, New Haven, Conn. Testing Perfor=ed By: K. J. Gianotti, Test Engineer A. E. Red- ",, Laboratory Supervisor M. Fountain, Laboratory Technician Witnessed By: T. A. B o s s, CEI E. C. Will=an, CEI E. J. D' Aquanno G. G. Littlehales J. S-ith, GAI ) J. rurness, GAI) Partial Report By: l ht+b4 G. G. Littlehales Q.A. Manager 1678 026 ..}}