Text

Advises That Carboline Intumastic 285 Fire Retardant Cable Coating Will Be Used Per Mods Discussed in Util 780615 Ltr. Product Believed by Util to Be Best Coating Available. Carboline Product Data Sheet & Summary of NRC Memo Encl
	ML19326C521
Person / Time
Site:	Arkansas Nuclear
Issue date:	06/30/1978
From:	David Williams; ARKANSAS POWER & LIGHT CO.
To:	Reid R, Stolz J; Office of Nuclear Reactor Regulation
References
	1-068-14, 1-68-14, NUDOCS 8004230638
	Download: ML19326C521 (10)
	v • d • e

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0Q llh l FtRGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

DISTRIELTION FOR INCOMING MATERIAL 50-313/368 REC: STOLZ J F ORG: WILLIAMS D H DOCDATE: 06/30/78 NRC AR PWR & LIGHT DATE RCVD: 07/10/78 DOCTYPE: LETTER NOTARIZED: NO COPIES RECEIVED

SUBJECT:

. LTR 3 ENCL 40 ADVISING AND FORWARDING INFO RE APPLICANT"S CHOICE OF~ FIRE RETARDANT CABLE COATINO. USEING CARBOLINE"S INTUMASTIC 285 AS THE BEST CHOICE AVAILABLE. W/ATT. l REVIEWER INITI AL: XJM PLANT NAME: ARKANSAS - UNIT 1 ,

ARKANSAS 1 - UNIT 2 DISTRIBUTER INITIAL: l

oo************** DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS ******************I FIRE PROTECTION (PRIOR TO ISSUANCE OF OL).

(DISTRIBUTION CODE BOO 2) ]

FOR ACTION: BR CHIEF ORB 44 BC**W/ ENCL PROJ MGR VISSING**W/ ENCL 1 LIC AceT N U /I LA**LTR ONLY l INTERNAL. EG FILF**t'm"~ NRC PDR**W/ ENCL l s ONLY I & E**W/3 ENCL DIRECTOR DPM**LTR ONLY DE YOUNG **LTR ONLY l VASSALLO**LTR ONLY DIRECTOR DSS **W/ ENCL l AD FOR PLANT SYSTEMS **W/ ENCL AUXILIARY SYS BR**W/2 ENCL I & C SYSTEMS ER**LTR ONLY AD FOR QA & O**LTR ONLY OAB**W/ ENCL R. MURANAKA**LTR ONLY HANAUER**W/ ENCL u!/0"C(.

$ 70 L 'z EXTERNAL: LPDR'S A Of 44 77N w/6WC RUSSELLVILLE, AR**W/ ENCL NAI ta.// 4NCt_

TIC **W/ ENCL NSIC**W/ ENCL POWER SYS ER**W/ ENCL PLANT SYSTEMS BR**W/2 ENCL AD FOR SYS & PROJ**LTR ONLY DIRECTOR DOR **LTR ONLY OPERATOR LIC BR**W/ ENCL ACRS CAT B**W/16 ENCL THIS DOCUMENT CONTAINS POOR QUAUTY PAGES r s 7ISTRIBUTION: LTR 46 ENCL 36 CONTROL NER: * : .a . 317 i TZE: 1P+SP g '

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' HELPING D UIL D AHKANSAS ARK ANS AS POWER & LIGHT COMPANY L,TTL. AeCK. ARK ANS AS 72203*1501)372-4311 97H & LOUISI AN A GT A..TS June 30, 1978 SD - 313 1-068-14 3%

2-068-40 Director of Nuclear Reactor Regulation Mr. J. F. Stolz, Chief ATTN: e Light Water Reactors Branch #1 s ~

Mr. Robert W. Reid, Chief -

Operating Reactors Branch #4 A

~

U. S. Nuclear Regulatory Commission Y,.' f,,.

Washington, D. C. 20555 .

. . ..u Subj ect: Arkansas Nuclear One - Unit 1 and ". '

3 ',$.-l Docket No. 50 :E 50-368 /)<y(, '

License No. DPR-51 Fire Retardant Cable Coating (File: 1510 2040 2-1510 2-2040)

Gentlemen:

As you are aware, many of the modifications discussed in our letter of June 15, 1978, require the use of a flame retardant cable coating.

Based on the information available at this time, we believe Carboline's Our decision is based on the j intumastic 285 the best choice available.

t following and the attached supporting information.

1. No significant affect on the ampa.:ity of the coated cables.

2. Contains no asbestos.

3. Easily applied.

4. Approved by F.M.

Our schedules require placing purchase orders for this material immediately, therefore the purpose of this letter is to inform you of our choice of fire retardant cabic coating.

Very truly yours,

[ Nhh -1 Daniel H. Williams Manager, Licensing s

DHW:JTE:vj Attachment 4 1710^1' o

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Intumostic,285 , ( Peon 2

. PHYStCAL PROPERTIES:

'Temperat_ure Resistance:

Continuous. 180*F (82*C)

Non-continuous 200*F (93*C)

WEATHERING RESISTANCE: Good FLEXIBILITY: Excellent ABRASION RESISTANCE::Very Good IMPACT RESISTANCE: Execlient VIBRATION RESISTANCE: Excellent HARDNESS: (Shore D) 30-40, fully cured EFFECT ON AMPACITY_ : Reduction in current carrying capacity varies with the size of the cable and the thickness of the coating. A't the recommended coating thickness, Factory Mutual Research Corp. indicates there is no significant effect on the ampacity of the coated cobics.

SPECIFICATION DATA SOLIDS CONTENT: (fheoretical)

By weight: 59 % i 2 %

THEORETICAL COVERAGE: Theoretical coverage is based on laboratory measurements.

l 10.26 square feet per gallon (0.252 square meters per liter)

- at a wet film thickness of 5/32 inch (4.0 mm);

( dry film thickness at opproximately 1/8 inch (3.2 mm)

! NOTE: Coverage given does not allow for waste during opplicatior.. Actual results

-will. vary depending on equipment used, configuration being protected, spacing of

! cables and applicator's icchnique.

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CURING TIME: Intumastic 285 drics to touch in 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months at 70*F (21 C). Cure is completed l

of ter 15 days at 70*F (21 C).

l Si._lEl.F LIFE: Six months minimum.

. T HINNER: Potohic water, if needed. Do not exceed one quart (liter) per 5 gallons (20 liters) of intumastic 285.

- Fl. ASH POINT: (f' ensky-Mariens Closed Cup)

Intumor, tic 285 165*F (74 *C) - water-based CAtJilott; c0P4TAlf 4'. cOf.it1U*.Titti C SOLyr t TS. krrt' AWAY r nOfA rT*AflK.. "Af Jn Ol'l 74 rt AIACS filCOttf it4CO Af tE AS WOflM7ArtJ PAlfr.T Wr All Illt !.Il t.tlei ttse' lle r.l*lII A ltlas'. leyt's etsi f a'.a ltvl t*l it'.iptr; t.g eOtit tl WI All GI OVs S i tti t s".l: f lif t fi c llVT fitt # f.t Al l l.l.l C lllic l Ollll*t.et III Af 4D If 4SI All Alts af ra :JIOllt H lit f.lAlil Af 3D t.ittJtilJt)1 D if 4 A(.E.OllOAf 44,l WI fil 18 88. If 41 R *tf Al. f.ll.CllHCAL 8 8)Dl!. 38 J /*8 8!. A') V488%ILL I.kl*t Or. lord itA.*Al405 8.XI'J f. WOllMf tW4 !.Iluull) UC ltl.ouillLn lo uOl. 84Df 4f i llitou0 loOLS At:0 lo WC All cofJDtlClavr. At43

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,.[a..,,5,*.3,..u,;'i;ir.-se.3 INTunMSTICg 285 t , ../s u., u . s v..s J u Le u ..s (Asbestos Frec)

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SELECTION DATA FORMER NOMENCLATURE: Carboline g L4900-8 GENERIC TYPE: Water-based, ready to use ficxible mostic fire protective coating. (Single package and osbestos free) .

GENERAL DESCRIPTION: Carboline intumostic 285 is designed for fireproofing grouped electrical cobbs and coble troys to meet code and/or insurance requirements. Being water based minimizes ventilation requirements on interior opplications. Ficxibility ollows fire protected wire and cable to be bent and flexed, it may be applied by spray, trowel, roller or hand gloving techniques. Intumastic 285 provides a hard surface that will not dust, Iloke, or spall. Normally, no mixing is required; but it is cosily done with portable mixers and potable water.

Intumastic 285 is a proprietary water-based mastic formulation developed to meet the

- U.S. Environmental Protection Agency requirements governing the use of osbestos in sproyed fireproofing materials, designed as a fire protective coating for grouped cicctrical cables and cable trays.

Intumastic 285 has been tested and opproved by Factory Mutual Research Corporotion and evolvoted successfu'ly by Sandia Laboratories, in tests sponso.ed by the.U.S. -

Nuclear Regulatory Commission. .-

RECOMMENDED USES: Designed for the fire protection of electrical cables and cable t roys . .

TOPCOAT: ~Topcoating of Intumastic 285 is not normally required.

CO LOR: Non-uniform brown.

RECOMMENDED SUBSTRATE. Intu!alion on electrical cobic should be cican, dry and free from grcose or oil.

CllEMICAL RESISTANCE GU!DE: Not recommended for immersion service. General chemical resistance is:

Exposure Splash & Spillone Fumes l Acids Foir Very Good

. Alkalics Foir Very Good '

Solvents Poor Good l

Salts Very Good Excellent l Water Very Good Excellent Mar. */8-N 780lN l

9

( Page 3

. I tumastic 285 '

T!!MPERATURE LIMITATION: CAUTION WATER-CASED - KEEP FROM FREEZING. Do not apply or store below .10*F (4*C) .

SillPPING WEIGilT: l 's 12.5 lbs. (4 liter cons - 5.7 kg) 5's 60 lbs. (20 liter cons - 27.2 kg) 55's 660 lbs. (210 liter drums - 300 kg)

~

APPROVALS: _

Cabic Coatings: Tested at Factory Mutual Rescorch Corporation and approved as a fire protective coating for grouped electrical conductors at 5/32 inch wer (4.0 mm); l/8 inch d.y (3.2 mm) opplication.

Method of Estimating Coverooc On Cable Troys: The cob!c troy is normally assumed to be o solid. surface. The intumastic 285 is sprayed from both sides (top and bottom) at a thickness of 5/32 inch wet (4.0 mm).

EXAMPLE FOR ESTIMATING COVERAGE ENGLISH UNITS METRIC UNITS Coverage (Theoretical) 10.26 sq. f t./ga l . 0.252 sq.m./l .

, .' at 5/32-inch wet (4.0 mm wet)

Width of Troy 2 feet 61 cm Projected Arco Top 2 sq.ft./ linear ft. 185 sq.m./ linear m.

Bot tom 2 sq.ft./ linear ft. + .185 sq.m.flinear m.

. Theoretical Usage of Material Top 2 Gal./ linear ft. 2.5 liters / linear meter Bott om 2 Gal./ linear ft. 2.5 liters / linear meter APPLICATION DATA: Work should be performed by a factory opproved applicator. Installction should follow instructions provided in Ccrboline's most recently printed application in-st ructions.

EQUIPMENT REQUIRED: Typical equipment includes a Groco President si$roy pump with satio of 10:1, equipped with on "even-flo" volve regulator. Binks 7-E-2 mastic spray gun (similar models by other mohers may be used, lut may not provide comparable oesthetic oppcorance). . Use 47 x 3/8 inch (9.5 mm) rip and cop for best results.

Malcrial Line: 50 ft. (15.25 meters) maximum of 3/4 inch (19 mm) 1.D. hose with a minimum bursting pressure of 1000 psi (6890 kpo).

' Mor. 78-N 700lN

( Page 4 c

. IntunwstiC 285 !

" Air Line: 50 ft. (15.25 meters) Of 3/8 inch (9.5 mm) 1.D. 'Oir line volve ottoched at gun end for atomization Control. 3 Ma teriOI Store drums On sides and rOiote OCCosionolly to minimize settling.

before use.

NOTE:_

whiCh has been stored for mOrc th0'n 30 dOys may require thorough mixing Keep in worm arco 24-72 hours before use.

Use Cleon water and rags as needed.

CLEAN UP:

CAUTION: MATERIAL IS WATER-BASED - KEEF FROM FREEZING.

MES. IN CONFINED ArtE AS WORKMF.N MUST WE A CAUTIOth CONTAIMS COMCtlSTIGLE SOLVtt4TS. KFTP AWAY rnOLt SPARKS Af 40 0 CN FLASt <OULD .v rnt$ll AlftLit4E ftESP nATORS. HYPEne.LHSITivE PEftSOf4SMADC AND GROUNOCD tri ACCOtt0 AND lt4STALLATf0N3 SHOULD DitEXPLOSION IIAZARDS EXIST WOUKMIN SHOU NONSPAnYtNG SttOCS. r essuance ano are suutect to criage To the t.est' of our knowiecitje the technical data containedf herein e soccifymn of orncett'9.

are trite No f orguasantee and accurate of accteracy at tne Coveraic. pcrf care is infores o of ortuance riven ors volthout pe6or notice. User must contact Carbollac to versf y correctness be or f O respont.blhtYif snown, ave suosect to cnange withoset p.hr irntslied, We guarantee our products to conf orm to C Arbcilne Qualety Control.We~assur9e t C it. f.N PPCS$ Olt IMPLir:0, ST AT u rO6Pv .

sistenting f rom use, t.f abit.ty, ## any, is f emeted 'O repeaccment of nroducts. Prices and UY OPCl4AT80N OR LAW.OR OTesCitWasC. INCLUDINo MCitCHANT AD8 LIT Y ANO FIT N e

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SUMMARY

OF MEMO ON FILE AT'T!!E PUDLIC DOCUMENT ltOOM U.S. NUCLEAR REGULATORY COMMISSION WASilINGTON, D.C. .

DATE OF MEMO: January 27, 1978 (Meeting Minutes)

ORIGINATOR: Mr. R. Feit - Office of Research, NRC SUI 1 JECT OF MEMO: ' Preliminary Results U.S.N.R.C. Contract at (29-1)-789 Fire Testing of Electrical Cables Coated With Fire Retardant Materials The testing was conducted in two phases, to date. Phase I consisted of placing individual cables into a furnace with a standard beat input and measuring the time to ignition of each cable specimen. Phase II consisted of filling a standard (ladder-type) cable tray with cables, spray applying a fire retardant mastic on the cables; and later fire testing the cable trays with a fire source of two propane burners having a total heat output of 140,000 11tu/ hour (41,020 watts) . The fire test in Phase II consisted of subjecting the coated cables and trays

. to the propane burner fire source for up to 6 cycles (each cycle was 5 minutes of fire exposure followed by 5 minutes of ambient l exposure) and noting the number of cycles that were required to cause ignition of the cables in the trays and (if ignition 4 occurred), the amount of time the cables burned once the ignition I had occurred and the fire source was removed. Phase III will be ~

simi.lar to Phase II, but will be conducted on vertically stacked cable trays. The results of the Phase I and Phase II testing were as follows:

PilASE I FURNACE TESTING l

TIME TO IGNITION IN SECONDS LARGE CABLES SMALL CADLES I SAMPLE (3/C #12 AWG) (#12 AWG) l 1

54 Uncoated Cable 42 39'. 60 Carboline Intumastic 285 1494 900 2220 1038 Flamemastic 071A 450 597 402 368 .

1 Vimasco #1A 522 372 532 . 378 Albi-Clad 584 615 1266 960 l l

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PilASE-II - SINGLE TRAY TESTING RESULTS OF TESTING ON LOADED TRAYS LARGE CADLES SMALL CADLES SAMPLE -

(3/C #12 AWG) (#12 AWG)

Unprotected Cable IEEE 383-Qualified Cabic 1 Cycle-Ignition 1 Cycle-Ignition Burned for 13 _ Durned for 10 Minutes Minutes Non-Qualified (IEEE 383) 1 Cycle-Ignition Not Tested Cable Burned For 36 Minutes Carboline Intumastic 285 6 Cycles 6 Cycles No Ignition No Ignition Flamemastic #71A 2 Cycles-Ignition 2 Cycles-Ignition Burned For 15 Durned For 6 Minutes Minutes Flamemastic 977 3-Cycles-Ignition 4 Cycles-Ignition Burned For 7 Durned For 7 Minutes Minutes

'Vimasco ilA 1 Cycle-Ignition 2 Cycles-Ignition Burned for 40 Burned For 15 Minutes Minutes a

Albi-Clad 6 Cycles G Cycles No Ignition No Ignition COMMENTARY DY CARBOLINE COMPANY Prom this testing, it appears evidenk that CARDOLINE INTUMASTIC 205 is the most effective cabic coating material on the market today. Not only in it the best performing material: it also has the following characteristics:

- Water Based

- Asbestos Free

- Flexible

- Factory Mutual Approved

- Cost Compe tive In the case of CARDOLINE INTUMASTIC 285,it really costs no more to use the best. . . . fire retardant cabic coatings are a safety j related item; they doncrve the best protection available -

I CAR 110LINE INTUMASTIC 285.

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, .c;. a. .. .'>t, b.m o.,.. 3 ir...id.s -DETAILS OF TESTING ON INTUMASTIC 285

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FACTO]Y' MUTUAL APPROVAL TESTING The testing under which Intumastic 285 was approved at Factory Mutual Rescorch Corporation included the following evoluotions:

1. - Fire test on vertical free film sample of material.

2. Fire test on current carrying, flexed and coated cables.

3. Ampacity loss on coated cobics - temperature not to exceed the rating of the cable insulation.

4. Salt water oging - intermittent immersion (8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months )/ dry (16 hour1.851852e-4 days 0.00444 hours 2.645503e-5 weeks 6.088e-6 months ) in 150*F (66*C),1% salt water for 30 days followed by fire testing.

S. Thermal cycling in air - intermittent exposures of 160*F (71 C) and -40*F

(-40*C) for 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months periods for 2 weeks followed by fire testing.

6. Dielectric strength - to determine the current loss (or leakage) through the fire protective coating which indicates a breakdown in the cable insulation under the intomastic 285.

NUCLEAR REGULATORY COMMISSION TESTING We do not yet have the formal report. The results, conveyed to us verbally, are that intunustic 285 performed the best of all the spray-on materials evoluoted.

We understand that intumostic 205 was the only material that successfully kept ."

the flames from spreading between the cable trays in the stocked cable troy test -

for the entire six cycles. WE HAVE A WINNERI This coating is stated by Factory Mutual Rescorch to be o "non-flammobic, inert compound opplied by spray, brush or trowel.' This coating prevents flame spread in conductors when exposed to o moderate fire source". There is no " fire rating" as such on Intumastic 285: it is merely approved for the specific use of cable protection - as stated, in addition to the testing conducted by Factor,, Muluol Research Corporation, Carboline Company's in:umastic 285 was evoluc.ted for the U.S. Nuclear Regulatory Commission (NRC) by Sandia Laborato.-ics, Albuquerque, New Mexico -

87115, under NRC contract AT (29-1)-789 in Decer.'ber,1977 and January, .1978.-

In the tests, fully !ooded (filled with cables to the top) cable tiuys were spray protected with inturnostic 285 and allowed to dry.

The trays were then solliccted to two propanc fired burners, yiciding a hcot input of 70,000 litu/ hour (20,510 watts) per burner. Fire exposuics were conducted both on llIE 383 oppioved " fire retardant" cubic: and on ."high flammobility" non-lire-rnied cable. The exposures were run on single trays which were monitored for tempeiuinic and on sincked tioys which weie monitored for tempeioture and flame proponotion fiom the lower troy to the upper troy. The fire test exposure March-78-N

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consisted cf exposure to the two proponc burners (total hcot input of 140,000

- Blu/ hour, (41,020 worts)) for a fire test cycle os follows:

Time :: 0 (T) Ignition of burners ist cycle T plus 5 minutes Burners off T plus 10 minutes Burners re-ignited

. 2nd cycle T plus 15 minutes Burners off T plus 20 minutes Burners re-ignited 3rd cycle T plus 25 minutes Burners off T plus 30 minutes Buiners re-ignited 4th cycle T plus 35 minutes Burners off T plus'40 minutes Burners re-ignited Sih cycle T plus 45 minutes Burners off T plus 50 minutes Burners re-ignited 6th cycle T plus 55 minutes Burners off The parameters moosured during the 6 cycles included:

Maximum cable temperature o.

b. Maximum gas temperature above the cable troys

c. Time to electrical short circuit in the troy due to the fire exposure

d. Time to ignition of the cobics (if any)

c. II burning of the cables occurred - length of burn timo ofter firo sourc.o ~"

was turned off.

f. If burning of the cables occurred - length and extent of the fire-offected (burned) orco .

The official report will be delivered to the U.S. Nuclear Regulatory Commission on March 9,1978. A printed copy (with the various materials identified by code number only) should be available from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Road, Springfield, Virginio 22161; by about April 15, 1978. The key to the ic!ter codes identifying the various materials by product trade nome will be available in the Public Document Room of the U.S. Nucicar Regulatory Commission. The products evoluoted include: Carboline intumastic 285, Flamemostic 71 A, Vimosco Cobic Coating No. l A,- Albi-Clad 890 and a Quelcor product. .

5 March-78-N

ML19326C521

Text

SUBJECT:

SUMMARY

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