ML19253C848

Forwards Evaluation of Electrical & Mechanical Penetration Seals & Fire Detectors Required by 790906 Fire Protection Safety Evaluation Rept

ML19253C848
Person / Time
Site:	Prairie Island
Issue date:	11/30/1979
From:	Mayer L NORTHERN STATES POWER CO.
To:	Office of Nuclear Reactor Regulation
References
TAC-11094, TAC-11095, NUDOCS 7912120244
Download: ML19253C848 (54)

Text

h k NSD NORTHERN STATES POWER COMPANY MIN N E A PO LIS. M O N N E SOTA SS401 November 30, 1979 Director Of fice of Nuclear Reactor Regulation US Nuclear Regulatory Commission Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Evaluation of Penetration Seals and Fire Detectors Required by the Fire Protection Safety Evaluation Sections 3.2.2 and 3.2.8 of the Prairie Island Fire Protection Safety Evaluation Report issued by the NRC Staff on September 6, 1979 require the completion of special evaluation of electrical and mechanical penetration seals and fire detectors. The requested evaluations are provided as Attachments (1) and (2).

Please contact us.if you require further information related to either of these items.

Yours very truly, L 0 Mayer, PE Manager of Nuclear Support Services cc J G Keppler G Charnoff Attachment i539 097

,P 7912120 i4

1 +

Attachment (1)

Director of NRR November 30, 1979 3.2.2 Penetrations (1) The licensee will demonstrate that the electrical and mechanical penetration seals installed in the plant have a rating equivalent

'to the fire severity present on either side of the seal. These seals will be qualified by test by an independent testing laboratory in accordance with ASTM E-119 under criteria acceptable to the staf f (4.9),

(2) The licensee will reevaluate the penetration seals between the diesel generator rooms and the auxiliary building to verify that these seals have a minimum three hour fire rating, Existing seals with less than a three hour rating will be upgraded (5.17).

Evaluation Section 3.2.2 as well as Sections 3.1.1 (2) through (4) of the Fire Protec-tion Safety Evaluation Report require fire barrier electrical and mechanical penetration seals to be reviewed for adequacy and upgraded if necessary.

To satisfy the requirements of Sections 3.1.1 (2) through (4) and Section 3.2.2, the following action will be taken.

1. New seals or replacement seals will be designed with a 3-hour

. rating. This rating will be substantiated by test data.

2. Existing seals will be reviewed and upgraded as necessary.

All seals will be upgraded to a rating at least equal to the maximum fire loading on either side of the barrier. This rating will be substantiated by test data.

3. Seals in the following areas will be upgraded to a 3-hour rating. This rating will be substantiated by test data:

a. Area 66 barriers shared with Turbine Building

b. Areas 69 and 70 barriers shared with Auxiliary Building

c. Elevation 735 Auxiliary Building barriers shared with Turbine Building

d. Hatch area (fire area 61) barriers shared with parts of the Auxiliary Building

e. Barriers between the diesel generator rooms and the Auxiliary Building

f. Barriers between the Turbine Building and adjacent safety-related areas not listed above 1539 098 1-1

I t To develop a test program to determine the fire resistance of the existing penetration seal designs and to design and test a method of upgrading existing seals to a 3-hour rating or a rating based on the existing fire loading, we have obtained the assistance of Nuclear Services Corporation (NSC). They are provided engineering services for testing and upgrading penetration seals at both nuclear generating plants operated by Northern States Power Company, Prairie Island and Monticello. The Fire Protection Safety Evaluation Report for the Monticello plant contained requirements for a program of penetration seal testing and upgrading similar to those specified for Prairie Island. In this discussion, we will describe the preliminary test and modification program formulated by Nuclear Services Corporation for both plants. A considerable savings in time and cost can be obtained by combining the testing required for both plants.

The electrical and mechanical penetrations at Monticello and Prairie Island were sealed with materials that have not passed the fire test and the hose stream test currently specified for such penetrations in ASTM E119-76 and IEEE 634-1978 (with NRC comments RS-809-5). There fore , the existing penetrations must be tested and if necessary, either replaced or modified so that the resultant configurations will pass these tests in accordance with today's requirements. The physical access to some of the existing penetrations make it impracticable if not impossible to remove the presently installed fireproofing material. Therefore, several dif ferent materials will be tested in an add-on configuration in which another material is built up over the existing material. See the attached preliminary notes, sketches, and list of material.

The material used in the penetrations at Monticello was primarily polyurethane foam, an Insta-Foam product. The material used at Prairie Island was primarily Thermal Insulating Wool which is an Owens-Corning fiberglas product. A primary concern at Monticello is the steel sleeve cable penetra-tions from the cable spreading room to the reactor building and to the turbine building. The only practical modification in this area is an add-on material over the existing configuration. Several test penetrations of this configuration will be tested. With the test sleeves filled with cable supplied by the plant using a 50% fill and sealed witn polyurethane foam, the sleeve will be wrapped with a metal lath which is fastened to the wall and overlaid with different materials, including Flamemastic 77, Pyrocrete 241, Silicate Gel, and Intrumastic 285.

Some of these same materials and also ICMS Product 60 will be tested as add-on modifications for the Control Room penetrations for both plants.

The attached preliminary sketches were supplied to the test lab (Southwest Research) which laid out three test slabs. These slabs will allow testing of all of the configurations proposed by NSC and will also provide for spares to allow adding on additional designs. The attached sketches do not include the Silicate Gel upgrade which is being added. This is a new material developed by Southwest Research Institute and was very recently brough t to the attention of NSC. There is some data, from a different application, that indicates that it may be adequate for our needs. The 1-2 1539 099

i 6 Intumastic 285 is being added on one of the extra penetrations as a possible solution. This material was designed to be used as a flame retardant on cable, but the manufacturer believes it to be an excellent candidate for protecting the sleeve penetrations in the cable spreading room at Monticello.

The specifications, ASTM & IEEE, state that a seal that has been qualified in a floor test is also qualified for use in a wall. Therefore, our plan is to use a floor slab and thereby qualify both wall and floor seals.

All penetration seals will be subjected to a 3-hour fire test and then the hose stream test. The temperatures are always monitored throughout the complete test. As coraplete a visual inspection as possible, with photographs, will be performed at 1-1/2 hours. Any test configuration that is good at 1-1/2 hours but fails at 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, or fails the hose stream test, is a candidate for retest in a 1-1/2 hour test. For this purpose, the test lab has been requested to use an existing test slab and prepare selected penetration seals using the materials that require a lengthy cure time.

This test slab will be held in readiness. Configurations passing a 1-1/2 hour test plus the hose stream test may be used to upgrade seals in areas of the plant where a rating of less than 1-1/2 hours is su f ficient and 3-hour rated seals were not explicitly required by the NRC review.

IEEE 634-1978 states that penetration seals that are unsymetrical should be fire tes ted from each side. The:efore, the preliminary test plan incudes additional test penetrations comply with this requirement.

The attached sketches are for review and comment.

The penetration testing will be completed early next year. Following evaluation of the test results, specific seal upgrade procedures will be developed and field work at both plants will begin. A completion date of October, 1980 is required. Any work which cannot be completed by that date will be reported to the NRC Staf f and a revised schedule will be submitted for review.

If there are any comments related to the preliminary test plan we have described, they should be submitted to Northern States Power Company no later than January 1,1980 to permit us to complete this project on schedule.

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REV DATE DESCRIPTION oa*== ossio~ cwsc= a-vo o*

REVISIONS TEST DATA Nuclear Services Corporation WWE m.

PASSED ,e '

FAILED NORTHERN STATES POWER SCALE PENETRATION SEAL TEST 1000787 OF f 1-32

P31

=

12" =

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l IN679 ISSUED FOK REVIEW d C4MMENT D.C &l/ 2GD i /

REV OATE DESCRIPTION o=4wn oc.a=le-cenl.-vol=,

REVISIONS TEST DATA Nuclear Services Corporation cuance no.

PASSED

"" '" kS5,El .I56K-Cl76[Of]$

CWG NO. SHEET REV FAILED NORTiiERN STATES POWER SCALE PENETRATION SEAL TEST b_

NONE c7 1000787 1-33 f

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REVl DATE REVISIONS TEST DATA Nuclear Services Corporation curect nc.

PASSED " " " ,me' " ' ' k5N.I NDR-Ol76/Ol7cJ M W. SH E RW FAILED NORTHERN STATES POWER C LE PEHETRATION SEAL TEST {_.

NONEEe~ 10o0787 cr 1-34

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@ g /g N ESEijE[ Sagy 1539 132 l l l 1 Ns79 muBD FOR REYlEW d dOMMadT D. 6. @ l / W> /

REV OATE DESCRIPTION ca*wa ocsiau

=wce=l .-vo l c4 REVISIONS TEST DATA Nuclear Services Corporation outGE No.

PASSED Ch55E N OI7b/ I79 FAILED

• * - ** "W NORTHERN STATES POWER SCALE NONS PENETRATION SEAL TEST r .> .,

1000787 o'  ; fj

NOTES:

CABLES TO BE PER PENETRATION SCHEDULE FOR EACH PENETRATION. CABLES TO BE 24" MINIMUM LENGTH AB0VE THE PENETRATION AND TIED TO A SUPPORTING STRUCTURE.

CABLES TO BE 12" MINIMUM LENGTH BELOW THE PENETRATION.

FASTEN THERMAL BOARD TO CONCRETE WITH 1/4" (REDHEAD) WEDGE ANCHOR WS-1416 OR EQUIV, AND 1/4" - 20 SCREWS OR STUDS, AS REQUIRED, AND 1" WASHERS.

kC0VER THE THERMAL BOARD BY APPLYING FLAMEMASTIC 71 A OR 77, OR PYR0 CRE 241 IN TWO C0ATS OF 1/8" EACH FOR A TOTAL THICKNESS OF 1/4". ALLOW THE FIRST C0AT TO DRY FOR 24 HOURS, THEN APPLY THE SECOND C0AT, IF THERE ARE ANY CRACKS AFTER THE SECOND C0AT HAS DRIED, THEY CAN BE C0VERED WITH A BRUSH APPLICATION.

kC'0VER 6" 0F THE CABLE WITH FLAMEMASTIC 71A, OR 77, OR PYR0 CRETE 241 IF THERE ARE ANY CRACKS AFTER THIS C0AT HAS DRIED WITH A 1/8" C0AT.

THEY CAN BE COVERED WITH A BRUSH APPLICATION.

MAKE A DAM AT EACH END AND PRIME SURFACE WITH GE SS 4044 PRIMER tmD APPLY GE RTV # ll OR # 511 SILICONE OVER CABLES, MOVING CABLES 10 ALLOW RTV TO FILL ALL V0 IDS. FILL TO APPR0XIMATELY 1" OVER TOP CABLE.

FASTEN METAL LATH TO THE WALL AND AROUND THE SLEEVE. APPLY FLAMEMASTIC 77 TO A DRY THICKNESS OF 2 INCHES INCLUDING AROUND THE CABLES AT THE 1539 133 END OF THE SLEEVE. ,

hFASTENMETALLATHTOTHEWALLANDAROUNDTHE SLEEVE. APPLY PYR0 PRIME 772 . APPLY PYR0 CRETE 241 .

?f We t TO A DRY THICKNESS OF 2 INCHES INCLUDING AROUND Y THE CABLES AT THE END OF THE SLEEVE.

I IH571 1%UED FOR REVIEW d dOMMEWT D.C. *:>/o/

REV DATE DESCRIPTION o ==

• ossion essex *-o a REVISIONS Nuclear Services Corporation cmae No.

cwasu.armoam O'anner NOR-0176/0179

noe ;

DWG NO. SHEET REV NORTHERN STATES POWER SCALE PENETRATION SEAL TEST 1 oF I 1000787 1-36

k PENETRATIONS P7, PS, P9, P27 AND P34 ARE 14" X 42". -

PENETRATIONS P22, P23, P24, P25, P26 AND P30 ARE 14" X 14".

PENETRATIONS P28.AND P29 ARE 36" X 48".

PENETRATIONS P31, P32 AND P33 ARE 30" X 45".

1539 134 PRE!MiiMRV l lil5H lsSUED FOR GVEWd C6MMENT DC. s;o / e /

REV DATE DESCRIPTlON oa*-= orsio~ ewac= .-vo a4 REVISIONS Nuclear Services Corporation cuAnce no.

comu. c-me Qannosz NOR-0176/0179

, me ;

NORTHERN STATES POWER scAu _.

PENETRATION SEAL TEST 1000787 /_

1-37

SLAB, POURED CONCRETE, 12 INCHES THICK SLAB, POURED CONCRETE, 12 INCHES THICK WITH A PORTION 24 INCHES THICK SLEEVE, 6" DIAMETER,13" LONG, FLUSH WITH BOTTOM 0F SLAB.

SLEEVE,6" DIAMETER,i3"LONG,FLUSHWITHTOPOFSLAB.

2 SLEEVES, 6" DIAMETER ON 12" CENTERS SLEEVE, 10" DIAMETER, FLUSH WITH SLAB AT EACH END.

SLEEVE, 8" DIAMETER, 18 1/2".LONG, EXTENDING 2" FROM ONE SIDE OF SLAB, AND 41/2" FROM THE OTHER SIDE.

THERMAL INSULATING WOOL (TIW) TYPE I OWENS-CORNING FIBERGLASS CORPORATION FIBERGLASS TOWER, TOLEDO, OHIO 43659 (419)248-8000 FLAMEMASTIC 71A THE FLAMEMASTER CORPORATION 11120 SHERMAN WAY, SUN VALLEY, CA 913S2 (213)982-1650 FLAMEMASTIC 77 PYR0 CRETE 241 CARB0LINE COMPANY, FIREPROOFING PRODUCTS DIVISION 350 HANLEY INDUSTRIAL COURT, ST. LOUIS, M0. (314)644-1000 REPRESENTED BY:

B0B CORDTZ CO.

1539 135 EAkN CA 4566 (41S) 846-3013 gPn g YEb ,

f ll579 ISSUED FOR REVIEW 4 COMMENTS _D. C. e fasp /

REV DATE DESCRIPTION ouwa ossma casc= *mo o*

REVISIONS Nuclear Services Corporation owoE No.

cwasu. cmoanu

me ;

%* ~

NOR-0176/179 DWG NO. SHEET REV NORTHERN STATES POWER SCALE PENETRATION SEAL TEST 1000787 CF f 1-38

INSTA-F0AM INSTA-F0AM PRODUCTS, INC.

2050 NORTH BROADWAY, J0LIET, ILL. 60435 (815)726-6241 1/2" MARINITE XL BOARD JOHNS-MANVILLE REFRACTORY PRODUCTS DRAWER 17L, DENVER, COLO. 80217 (303)979-1000 f14 KA0 WOOL, BULK FIBER THE CARBORUNDUM COMPANY, INSULATION DIVISION P. O. B0X 808, NIAGARA FALLS, N.Y. 14302 (716)278-6221 KA0 WOOL, DURABLANKET 1" CARBORUNDUM FIBERFRAX HOTBOARD 17 ICMS PRODUCT 60, 5" DEEP, MINIMUM, FROM TOP AND SIDE OF SLEEVE INSULATION CONSULTANTS & MANAGEMENT SERVICES, INC.

P. O. B0X 1, BAR0DA, MICHIGAN 49101 (616)422-2112 ASBESTOS PIPE INSULATION 5" 0.D., FOR 3" PIPE, 3' LONG EXTENDING 018 l' EACH SIDE OF SLAB.

ALUMINUM SHEET OVER PIPE INSULATION PABC0 SUREFIT METAL JACKETING SYSTEM LOUISIANA-PACIFIC CCRP., PALESTINE, TEXAS 75801 PIPE 3", STEEL, 5' LONG, EXTENDING 2' EACH SIDE OF SLAB, CAPPED AT EACH END.

.P;i_FiOagnM } .

1539 136 I ll6M issuso FOR REVIEW d COMMM7 D4. d@ /40 /

REV DATE DESCRIPTION o=*== orsion exces 4-v o am REVISIONS Nuclear Services Corporation omnaE no.

cuessu.casoanu G mnarv NOR-0176/0179

.m.

DWG No. 34EET REV NORTHERN STATES POWER scAtg PENETRATION SEAL TEST 1000787 0F l 1-39

I O21PIPE 5", 316 STAINLESS STEEL, 4' LONG, EXTENDING l' BELOW SLAB, CAPPED AT EACH END.

CONDUIT 4", 4' LONG, EXTENDING l' BELOW SLAB, CAPPED AT EACH END.

CONDUIT 2", 4' LONG, EXTENDING l' BELOW SLAB, CAPPED AT EACH END.

CONDUIT 1", 4' LONG, EXTENDING l' BELOW SLAB, CAPPED AT EACH END.

PRIMER SS 4044 & RTV 511 GENERAL ELECTRIC COMPANY l RIVER ROAD, SCHENECTADY, N.Y. 12345 (518)385-2211 SCLID SHEET METAL FULL WIDTH OF TRAY (16 GA MINIMUM) hLADDERBACKTRAY, ALUMINUM,24" WIDE,4"HIGH PYR0 PRIME 772 CARBOLINE COMPANY 3.4 POUND PER SQUARE YARD METAL LATH SELF-STICK INSUL-ANCHORS H.A. JONES CO. INC, DAYTON, OHIO OR SELF-STICK STICK-UPS MIRACLE ADHESIVES CORP. BELLMORE, LONG ISLAND, NEW YORK OR EQUIV. TO FASTEN TO THE WALL, AND USE TIE WIRE TO FASTEN THE METAL LATH AROUND THE SLEEVES.

> l  ! }

N I 1116 1 1155UBD fCR REVIEW 4 &MM6WT. D.C. SD / at2D /

REV DATE DESCRIPTION oaawa assima cwece amo o*

REVISIONS NuclearServices Corporation CM*GE No-m canoem NOR-0176/0179 G. *%..

DWG NO. SHEET REV NORTHERN STATES POWER scAtr PENETRATION SEAL TEST L

NE 1000787 cp '

1-40

SLEEVE, 8" DIAMETER, 34" LONG, EXTENDING 031 2" FROM ONE SIDE OF THE SLAB AND 20" FROM THE OTHER SIDE.

CHICO A CROUSE-HINDS COMPANY CONSTRUCTION MATERIALS PRODUCTS DIVISION ROOM 625 155 BOVET ROAD SAN MATEO,. CALIF. D4402 (415)574-3737 CHICO X CROUSE-HINDS COMPANY INTUMASTIC 285 034 CARBOLINE COMPANY SILICATE GEL 035 SOUTHWEST RESEARCH INSTITUTE 6220 CULEBRA ROAD SAN ANTONIO, TEXAS 78284 (512)684-5111 SILICATE FOAM 036 SOUTHWEST RESEARCH INSTITUTE 1539 138 i t- l

~

l ll.15% l33US FOR EVIBW b @MM&NT D. G. m / So /

REV DATE DESCRIPTION oa*=a ossio~ carc= *mo o*

REVISIONS TEST DATA Nuclear Services Corporation cHAeon no.

PASSED i FCt ,

O/Eis NOR-0176/0179 DM NO. SHEET REV FAILED NORTHERN STATES POWER SCALE PENETRATION SEAL TEST /~

' b. 1000787 0F 1-41

37. 2" CHANNEL 38 3" PIPE,12'.' LONG h LADDER BACK TRAY, ALUMINUM 18" WIDE, 4" HIGH he a h k i us77 lesuco rog geviEw a couMegr -- oc.

oaawa su f p /

REV DATE DESCRIPTION ossion cases ***vo o^

REVISIONS Nuclear Services Corporation cmas m.

cumu. aumm Qf.rof..ex NOR-0176/0179

~ DWG NO. SHEET REV NORTHERN STATES POWER ug PENETRATION SEAL TEST 1000787 , l 1-42

QUADREX SLAB #1 8" DIA , 6" ' ,

66"6 '4, , 6" ,

TYP 1 1 1 5 PLACES

' 4" " ' '

s s

,d, ,6",, , 6" , 6" ,

6" ,

8" DIA - ,

TYP , 6" , , 6" , d", , 6" 6" 5 PLACES ' ' '

10" DIA " '

TYP ga 5 PLACES ,

+ +

12" 14"X42" 6" DIA s

. . 12" TYP ' '

, (4 '

10 PLACES (

O  ;

rs g i i 14"X42" G 12" We +

Q 7 14"X24" a

w e

@~ 1539 140 I

\ \\bM ISSUED FOR REVIEW 6 C&uMEMT D 6. G / a@ /

REV DATE DESCRIPTION o=*wa ossian ewec= .-v o o.

REVlSIONS TEST DATA Nsseleai Services Corporation cnAnce no.

PASSED

• ["" 05"~2 NOWI]W0lTD FAILED M NO. SHEET W NORTHERN STATES POWER --

" NON6 PENETRATION SEAL TEST 1000787

• 1-43

QUADREX SLAB #2 14 x 14 14 x 14 14 x 14 i

14 x 14 14 x 14 14 x 14 M

M 48 x 36 48 x 36 W

2Ell

~~

tw EEb W

L&J CC:l:

@~

194

1. A.1,

_t fle77 13suso f0R Review 4 COMM8NTS D.Cl @ / slD /

REV DATE DE$CRIPTION oaa== ossia = ewsex 4..vo o4 REVISIONS TEST DATA Nuclear Services Corporation CHARGE %.

PASSED

~

N' 4 17 /ob9 MW WEU RW FAILED NORTHERN STATES POWER scAtt PENETRATION SEAL TEST . ..L_

1-44

QUADREX SLAB #3 30 X 45 14 X 42 30 X 45 14 X 42 rY W

c r,

=>c E!P,, 30 X 45 L3iG awm 10" E=&J

% 1539 147 1 illSW 155LL=D FOR REVIE.W d WuMT D.(/. 83;> /p /

REV DATE DESCRIPTION oaawa ossia = canc= ...vo o*

REVISIONS TEST DATA Nuclear Services Corporation CHARoe No.

PASSED 9 NON~ OI7b/OI79 FAILED NORTHERN STATES POWER scAtt PENETRATION SEAL TEST (~

UF NONb 1000787 1-45

Attachment (2)

Director of NRR November 30, 1979 3.2.8 Fire Detectors The licensee will verify that the existing installed detectors will respond promptly to the various types of materials found in the plant when these materials are involved in the incipient stages of a fire (4.2).

Evaluation Refer to the attached response testing reports provided to us by the detector vendor (Pyrotronics, Incorporated).

Response testing data for specific cable types not included in the attached reports has been requested and will be submitted at a later date. These cable types are:

Anaconda /Okonite EPR Kerite HT/FR Boston CSPE Westinghouse FEP This information should be available by early next year.

1539 143 2-1

e ,o :I ,n.;I ,( o- r

' . . . m o- _.)

!! l.._U'll-

. I

. . .. ' .t

. Published by Pyrotronics Engineering Department .

RESPONSE OF F5B IONIZATION DETECTOR TM-12A TO -

VARIOUS DURNING IIATERIALS n

R .

$ This report deals with a large nuaber of anterials of chich the

$ buildings, stored goods or cloacnts of indiv'idual objects to bc W rot p(go)ected cay. consist.

For cach anterial, the quantity in grans 3 is given, whic!), when buracd in a container of I cubic foot

$ voluac and hoaogenous distribution of the ensuing combustion gases, g nill alara an F5B detector with standard s.cnsitivity of 50 volts.

~O E These values ucre experimentally deteroined in a ainiature fire-

6 chamber, having a voluac of 2 cubic feet. Solid materials core 2 burned without open flame by putting thea on an asbes tos plate, U

heated to approxinately 65000 (12000F). The average tir:c for

$ alaraing the various solid catcrials was 10 seconds. Liquid l?,

aaterials ucre burned in a porcelain containc~r by dippin:, a glon ,

E ing nire into the liquid; cvaporation was substantially reduccd j]. by this acthod. The average tiac for alara was 20 seconds.

3

.g. The tests described above provide re,roducible results, ;ut ec.nnot 2 be applied in practice without further consideration, becausc the e conditions whion are valid for laboratory tests are not usual 2y

> present in a practical situation. For exa=1,1c, the ccabastion

gases 17111 not be uniformly dis tributed in the entire roon, tue i distance froa the source of the fire to the detector is consider-6 ably greater and in a fire outbreak it is likely that several y catorials are burned siaultaneously.(container, floor, etc.).

6

$ The list provides comparative values of the required quantity of t burned material necded to alara the detector. Generally, it can

{ be stated that the gur.ntities of natorial necessary for .:larn .43 9 the detector are not su'ostantially different, oith the e.:c e ption ccan burned, transfora into other 3 of those compounds cheaical actorials,('vhich, r.lcohol, acetone). The average f or :, olid 4

O J3 S.R. 7-10-67 O

l.~. .

O.

r 61

. _$.)

2-2 1

f. QuanLity Type .

burned 0f 1 Material Burned in g:c/f t 3 Combustion l

Materials of Venetable Origin:

Grain Daricy . 0016 Carbonized Oats .0012 Carbonized Corn .0015 Carbonized .

l Rubber

.0006 Carbonized 3 Rosins Soldering resin .0005 Carbonized .

Wood Conifers .0006 Carb, cobers Wood Ilard Wood .0011 Carb, ccbers Cork t .000G Carb, cabers Linen + Glue .0004 Plame Uick Spindle string .0027 Carb, cabers i Paper Glued writing 0004 Carb, cabers-paper Filter paper .0005 Carb, cabers l l'

Tobacco .0015 Carb, caberr l

i Materials of Animal or I!ineral Oricin:

Asphalt .0024 Carbonized Felt .0004 C'arb o ni z e d Putty .0037 Carbonincd Cowhide .0003 Carbonized i

IIorschair .0003 ,

Carbonized Sulphur

• 0001

. Fla. e l

1 Textiles:

Cotton .0003 Plame

. Artificial Silk .0010 Flace Silk .0006 Flaac Wool

• - cre,tnr than

.0003 Flame  !

4-3 1539 145

Quant 2t,y '.s ; ,. .

Burned ., :

Material Burned in ga/ft3 C ombu:; tion f

Paints:

Baking Varnish Alkyd /Carbaaid resin

. combination brown

• 0001

. Carbonized

.000G black Carbonized i

Synthetic Rosin Alkyd Resin .0020 Carbonized Varnish Nitro Varnish Cellulosc/ Syn the tic .0014 Carbonized Rosin combination Electrical Insulation Materials:

Cellophane 0003 Carbonized Uire Insulation: ,

Enamel Insulation of copper wires .0004 Carbonized Oil Varnished Uire with double artificial silk insulation (flame proof) .0004 Carbonized 4

Polyvinylacetate .'0002 Carbonized Polyvinylchloride red .0003 Carbonized blue .0003 Carbonized green .0004 Carbonized Thermoplastic, single insulation (flace-proof) yellon/ red .0002 Carbonized.

i Lacquered glass nool .0014 Carbonized l Mica / Asphalt cochination .000G Carbonized Spaghetti Tube, oil impregnated, organic .0005 Carbonized fabric Artificial Re s i n '.in t e ri al s . Pressed Layers.

Phenolic Rosin with fabric .0006 Carbonized Phenolic Rosin with paper .0003 Carbonized to

.0000 Phonolic Rosin with asbestos fabric .0034 Carbonized Oil glass silk .0000 Carbonized Oil silk .0004 Carbonized i

2-4 lg l46

. s Material Burned Burned of

             ' '                               in gm/ft3              Coabustion
          'f
                                                 * , 0043             Slight F1.

Carbontet.achloride Trichlorothylene .

                                                     .0635            Flaae Oils and Greases:

• 0043

                                                    .                Fl a= c-Dioscl Oil Ilydraulic 011                     *;0043              Flaae Engine Qil                        *:0043               F1hae Spindle Oil

• 0043

                                                    .               Flace Vaseline Oil                      *;0043              Place Dall Dearing Grease                     0005          Flame i
                                               -- -        .      ~
 .*p, 2-5                         1539 147

. 3 ed PYRALARM DETECIORS F3/SA AND FSB (SENSITIVITY TO POLYVINYLCliLORIDE COMBUSTION) from ~ PY ROTRONI CS , INC. SUBSIDIARY OF LAKER INDUSTRIES, INC. 2343 MORRIS AVD.IIE UNION, N. J . 070S3 SERIAI, NO. 17741 FEDRUARY 23, 1967 F A C T O P. Y M U T ll A t FNGINEEkING C O R P O F. A T I O N

           -    11',1   B O S T O.W.r 3 Ovid E NCE T U':N P'K E. N O2 V/O C D. tAA55. 0204?

2-6 1539 148

                                                          ~
 -    I         FACTORY MUTUAL ENGINEERING CORPORATlON 1151 005 TON.rROVIDENCE TURNPIKE. NORWOOD, MA55. 02062 17741                                                                    February 23, 1967 PYRALARM DETECTORS F3/5A AND FSB (SENSITIVITY TO POLYVINYLCilLORIDE COMBUSTION) from PYRUIRONICS, INC.

SUBSIDIARY OF BAKER INDUSTRIES, INC. 2343 MORRIS AVENUE UNION, N. J. 07083 I INTRODUCTION The Pyralarm detectors respond to acrosol products of combustion. From many combustibles these airborne products are light, invisibic and rise rapidly to the detector from thermal lift. Detector response is often very quick. Other co'mbustibles have products of combustion that are much larger and heavier, and are readily visibic. If there is little thermal lift, these products rise slowly, drift horizontally and tend to stratify. Products of polyvinylchloride insulation combustion are exampics. With these, Pyralarm response is not nearly as quick; and, in fact, some questioned whether the Pyralarm might be insensitive to these products. The purpose of this re-examination was to determine if there is something so unusual about PVC combustion that the Pyralarm ignores it. The answer is nc8ative. Pyrolarm will respond to PVC combustion when the products reach the detector. This is also true of approved spot type smoke detection devices in general. II TESTS A General

1. These were run at the Pyrotronics plant in Union, N. J. Tests produced products of PVC combustion two ways: (1) by electrically overloading PVC insulated wire to produce smoke; (2) by placing pieces of the insulation on a hot surface until smoke resulted.

2. Four brands of wire were tested: Alpha, Belden, Birnback and Plastic Wire 6 Cabic. In all, eight different types and sizes were tested.

These ranged from No. 16 to No. 22 AWG, having 60-1050C tempureture, 200-1000 volts and 17,35 ampere ratings. 2-7 1539 149

s . l' age 2 17741

3. Iloth Pyralarm detectors F3/5A and FSB uere tested.

B Hesults

1. There was a noticeable dif ference among the four brands . tested; probably as a result of different plasticizer and pigment. Ilowever, in no case did the Pyralarm fail to operate when the products got there.

2. Sometimes, the response appeared slow - on the order of a couple mir.utes - and the test area was uncomfortably sr.iakey at floor level. Ilaweve r ,

observation at detector level showed a practically clear atmosphere around the detector.

        ~

3. Other details arc on file; but are unnecessary for the purpose of this report.

III CONCLUSION Pyralarn detectors F3/SA and r5u are sensitive to products or "polyvinylchloride" insulation co:abustion. EWC/bc TESTS AND REPORT SY  : E. W. Cray , 1539 150 . 2-8

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