ML17275A732
| ML17275A732 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 08/05/1975 |
| From: | Price W, Shield W FACTORY MUTUAL RESEARCH CORP. |
| To: | |
| Shared Package | |
| ML17275A731 | List: |
| References | |
| 24963-(4510), NUDOCS 8012090302 | |
| Download: ML17275A732 (34) | |
Text
Item 3 Fire Test on BISCO SF-20 Silicone Foam And Radiation Shielding Penetration Seals in t1asonry Wall Design WP 374
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FIRE TEST ON DISCO SF-20 SILICONE FOAbk AND Pvt DXATXON SHIELDING PENETRATIOiN S=ALS XN MASONRY HALL DESIGN NP 374 For BRAND INDUSTRIAL SERVICES, INC.
1420 RENAISSANCE DRIVE PAPA RIDGE, ILLIttOIS 60068 C,
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SERIAL NO.
24963 (4S10)
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August 5
I975 FIRE TEST On BISCO SF-20 SILICONE FOAY. AND RADIATION SHIELDING PENETRATION SEALS IN MASONRY MALL DESIGN NP 374 for BRAND INDUSTRIAL SERVICES, INC.
1420 RENAISSANCE DRIV
~PARE RIDGE, ILLINOIS 60068 GENERAL Th's rcport describes the construction, the test procedure and lists the results o. a fire test, conducted on fourteen silicone rubber pe..e ration seals installed in a nominal 12 in. thick concrete block wall.
Tne silicon seals ir.eluded gen ral purpo-e foam, radiation shie'd-and flexible silicoste boots containing various combinations of electrical conduits and trays,
- cables, pipe an" tubing p=.netratio..s.
T!te pen tration components and their general arrangement along with the design m
hod employed to seal these openirgs vere as requested by Br nd Industrial
- Services, Irc. (Bisco).
The test wall asse...bly incorporated the various pen trations as shown on Illustration 1.
Specifications of the Bisco components w re supplied and are attached as "ppendix sheets to this report.
The products are not m"nufactured under Factory
.'.utual quality assura..ce follow-up in-plant inspection program.
The object of this test program was to i..vestigate the fire endurance chare-teristics of the various penetration sea)s as described herein.
Tne tes was performed follow'ng the procedur s for evaluat'ng wall assemblies as define" un"er the'tandard for Fire Tests o= Building Construe ion and:taterials AST-'t E119-73, (NFPA 251).
The appiic cion o= the hos stream phase of the test s=an ~rd was not conducted.
Temperature at the unexposed surface of the pe:;e-"'cion seals vere monitored during the f re test.
.::-.= pe,
=
tion seals re...ained in pI.ace :or the 5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> duration of tlt tire ex,'os '"e test anc prevented the passage o;
-la-...e.
FAC RY MUTUAL RESEARCH CORPORATION i
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Page 2
24963 C-MATERIALS DESCRIPTION The materials used in the construction of the wall assembly and the designated penetration seal components are described below:
Concrete Block Nominal 12 in. thick (actual 15-5/8 in.
by 7-5/8 in. by 11-5/8 in. thick) 4 hour4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> rated concrete block supplied by Anchor Concrete Products.
Blocks manufactured to conform to ASTM Standard C90.
Concrete Laboratory mixed concrete consisting by volume of 1 part Portland
- cement, 2 parts sand and 3 parts gravel mixed with 7.0 gallons of water per 94 lb. bag of cement.
Bisco SF-20 Silicone Rubber Penetration Seal Bisco general purpose foamed-in-place silicone rubber foam.
Material designed as a seal for pipe or cable tray openings.
The Bisco SF-20 silicone rubber foam used in this test was indicated as being a four component system of Dow Corning silicones formulated by Bisco.
The test samples were prepared by Bisco.
See Bisco Specification No.
207 under Appendix A.
Bisco SF-150L SF-250L and SF-300L Flexible Silicone-Bonded Lead Penetration Seals Bisco radiation shielding stops or seals designed for use with pipe, cable trays, conduit and valve stems that penetrate thru radiation barriers.
see Bisco Specification No.
209 under Appendix B.
Bisco Flexible Boot Penetration Seals These are designed as a seal for moving pipe and duct penetrations and high temperature steam lines; Bisco Specification No.
204 covering the materials and construction of the. flexible boot penetration seals see Appendix C.
Dammin Materials These materials are employed to contain the liquid silicone in a specific area until it reacts and expands into a solid silicone rubber product and are left in place.
Three types of damming materials were used in the preparation of the test specimens:
a)
Bisco Part No. MFB-1600 semi-ri id block insulation Nominal one inch thick insulation designed for a maximum service temperature of 1200'F.
b)
Bisco Part No.
CFT-2300 felt insulation Nominal one inch thick ra'fractory fiber insulation designed for a maximum service temperature of 2300 F ~
c)
Bisco Part No.
CFR-2300 loose fiber insulation bulk refractory fiber insulation designed for a maximum service temperature of 2300'F.
0-
ACTORY MUTUAL RESEARCH CORPORA 24963 Page 3
ERECTION OF TEST ASSEHBLY:
The wall assembly was erected in a test frame so as to fillthe masonry opening as shown in Illustration 1.
The wall was constructed of nominal 12 in. concrete block laid in a full mortar bed.
The openings were formed and poured using concrete mixed at the test laboratory.
The concrete openings were constructed as the blocks reached the upper level of each penetration location.
Eleven of the fourteen penetration seals were received at the laboratory as completed units including steel sleeve and all other components which were then installed directly into the prepared openings.
Penetrat'on openings designated as Nos.
6, ll and 12 as shown on Illustration 1
were constructed at the test'aboratory.
Following are descriptions of the penetrations as designated and shown on Illustration 1.
The pipes contained in the penetration were of the standard weight.
The electrical cable insulation was of unidentified material.
1.
Steel sleeved rectangular
- opening, 2 ft. wide by 1 ft. high and containing a
12 by 6 in. solid sheet steel cable tray (no perforations).
Within the tray were tightly nested 17 various sized insulated electrical wires ranging in size from 5/16 to 1/2 in. outside diameter.
The sleeve opening was sealed for the full depth of wall with Bisco SF20 silicone foam and in addition both sides were faced with 1 in. thick material designated as Bisco Part No. MFB-1600.
2.
Twelve inch inside diameter steel pipe with 16 in. square steel flange at unexposed side of wall.
The opening within the sleeve was sealed for the full tnickness of wall with SF20 silicone foam and in addition, each side of,the wall was faced with 1 in. thick Bisco Part No. MFB-1600.
3.
Twelve inch inside diameter steel pipe containing a
6 in. inside diameter steel pipe covered with a steel cap at the exposed 'side.
The center of the 6 in. pipe and the annular space between the pipes were sealed wth SF300L silicone-bonded lead for 12 in. depth.
The unexposed side of the seal was covered with MFB-160I) of 1 in. thickness.
4.
Four inch inside diameter steel pipe containing seven insulated electrical cables equa'ly spaced.
The opening sealed with SF250L silicone-bonded lead for full thickness of wall.
Both sides unfaced.
5.
Four inch inside diameter steel pipe (no penetrating items) sealed with SF150L silicone-bonded lead for full thickness of wall and unfaced.
Page FA RY MUTUAL RESEARCH CORPORATION 24963=
6.
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Six inch inside diameter steel pipe containing four 3/4 in. outside diameter insulated electrical cables equally spaced and sealed with SF20 silicone foam.
Faced with 1 in. thick MFB-1600 on the exposed side of the penetration.
The foam was poured-in-place in the pipe sleeve and then installed in the prepared wall opening.
See Illustration 5.
The depth of foam was 12 in.
7 ~
Six inch inside diameter steel pipe containing four insulated cables ranging in size from 5/8 in. to 1 in. in outside diameter and equally spaced.
The opening was sealed with SF20 silicone foam and the unexposed side faced with 1 in. thick HFB-1600 board.
The depth of foam was 12 in.
Eight inch inside diameter steel pipe sleeve containing one 2 in.
inside diameter steel pipe with ends uncapped.
Sealed with SF250L silicone-bonded lead and faced with 1 in. thick HFB-1600 on the unexposed side.
The depth of foam was 12 in.
9.
An 8 in. inside diameter steel pipe containing four 3/8 in. diameter stainless steel tubes with ends uncapped.
Entire opening sealed with SF150L silicone-bonded lead for full depth of wall.
In addition, both sides faced with HFB-1600 board of 1 in. thickness.
Steel sleeve with a flange having a rectangular opening 41-3/4 by:
17 in. and conta'ining a
12 in. by 6 in. solid sheet steel cable tray (no perforations) with th'rteen various size electrical insulated cables tightly nested and four steel pipe penetrations.
One each of the 2 in.
and 6 in. pipes was filled with SF250L silicone-bonded le'ad and all else was filled with SF20 silicone foam.
'Both sides of the total opening plus penetrations were faced with 1 in. thick HFB-1600 board.
Depth of foam, full thickness of wall.
T The penetration incorporated a
16 in. inside diameter steel pipe sleeve with a 4 in. inside diameter pipe penetration.
The pipe penetration was covered witn 4 in. thickness of pre-moulded insulation and sheathed with an aluminum jacket.
4 The annular space between the jacket of the insulated pipe and sleeve was unfilled.
The unexposed side contained a flexible reinforced, silicone-rubber boot.
12.
Same as penetration 11 except that the annular space between the insulated 4 in. pipe and the sleeve was faced with 5 in. thickness of CFT-2300 felt insulation reinforced with ni-chrome wire mesh and installed at exposed side.
13.
Four inch inside diameter steel pipe sleeves with no penet'rations sealed with SF20 silicone foam and faced with HFB-1600 board on the exposed side.
Depth of foam, full thickness of wall.
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FACTORY MUTUAL REScARCH CORPORATION 24963 Page 5
14.
Four inch inside diameter steel pipe same as penetration 13 above, but with NFB-1600 board of 1 in. thickness on the unexposed side of the penetration seal.
Depth of foam, full thickness of wall.
Illustrations 2 through ll show the construction and installation of, the various penetration seals while Illustrations 12 and 13 show the exposed and unexposed surfaces before the fire endurance test.
FACTORY MUTUAL.
RESEARCH CORPORATION 24963 FIRE TEST The test was conducted subjecting one side of the test wall assembly to fire exposure in accordance with the Standard for Fire Tests of Building Construction and Materials ASTM Designation E119-73, (NFPA No. 251).
The application of the hose stream phase of the test standard was not conducted.
The standard test furnace of the National Gypsum Company for wall assemblies was used for this
~ test.
S AMP'.E:
The wal'ssembly, 10 ft.
1 1/2 in. wide by 10 ft. 1Iigh,'ontaining the fourteen penetra-ion seals was erected in the test frame as previously described.
METHOD:
'",he.'urnace tempera"ures were measured with 11 thermocouples symetrically located in I'.he furnace chamber as shown on Illustration 14.
The unexposed surfaces of the penetration seal face were measured by 13 thermocouples, each covered by a dry asbestos pad cu-to fit between the cables and other wall penetration items and two additional thermocouples designed as Nos.
14 and 15 were located at face of the concrete block and at the surface of the cast-in-p'ace concrete adjacent to Penetration 12.
The locations of these 15 thermocouples are shown on Illustration 15.
Sixteen thermocouples were
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used to measure the temperatures of the steel sleeves, cable trays and other penetrations as shown on Illustration 16.
The assembly was subjected to a superimposed total load of 3500 lb. uniformly applied to the concrete block wall.
The furnace fire was started, exposing one side of the assembly to gas flames of contro'led severity and extent in accordance with the Standard Time-Temperature Curve.
Throughout the test, observations were made to note the character of the
.ire and its control, the cond'tion of the exposed and unexposed
- surfaces, an"
~11 developments pertinent to the performance of the assembly with referenc to stability, passage of flame and generation of smoke.
24963 Page 7
RESULTS:
Character and Distribution of Fire The fire was luminous and well distributed throughout the test.
The furnace temperatures were controlled in accordance with the Standard Time-Temperature Curve as shown on Illustration 14.
Observations of the Ex osed Surface At 1 minute of exposure the cable insulation was burning on the cables in the large cable tray (No. 10).
By 4 minutes the cable insulation was burning at several other locations.
At 9 minutes the SF250L foam surface in the 8 in. dia. pipe was turning white (No. 8).
At 12 minutes the SF20 foam surfaces of the 6 in.
(No. 7) and 4 in.
(No.
- 14) dia. pipes sleeve were forming a white crust.
At 18 minutes. small flames were coming from the N-1200 insulation surface of the Large cable tray.
After 32 minutes MFB-1600 insulation on the exposed surfaces of the 8 in. dia.
pipe sleeve sealed with SF150L foam (No. 8) and the 4 in. dia. pipe sealed with SF20 (No. 13) was flaming.
At 36 minutes all of the silicone foam seals directly exposed to fire were flaming.
The I&B-1600 insul'ation on the large cable tray (No. 10) was delaminating after 44 minutes of exposure.
At 47 minutes small pieces of flaming material were falling from the 12 in. pipe sleeve s al d with SF300L foam (No. 3).
At 62 minutes, small pieces of the MFB-1600 insulation were falling from the large cable tray (No. 10).
After 86 minutes the penetrations covered with MFB-1600 had a white fibrous appearance.
At 120 minutes there was no change in the performance of any of the foam seals, burning and flaming was steady and continuous with the MFB-1600 insulation disintegrating and falling off in small 'pieces.
At 222 minutes the flaming had subsided from all penetration
- seals, except for the large cable tray (No. 15).
Also, the 6 in. dia. pipe (No. 7) sealed with SF20 and the 8 in. dia. pipe (No. 8) sealed with SF250L which had the foain exposed directly to the furnace flames.
After 240 minutes flames were coming from the large cable tray (No. 10) only.
Smoke continued from. the two 8 in.
dia. pipe sleeves (Nos.
8 and 9) while the other seals remained unchanged at 266 minutes of exposure.
At 282 minutes the 6 in. dia. pipe sleeve (No. 7) with the SF20 exposed to the furance began to reflame and the large cable tray (No. 10) was smoking slightly.
The test was terminated at 300 minutes.
Observations of the Unex osed Surface At 37 minutes the silicone boot (No. 11),
without the fire retardant
- backing, was smoking slightly from the top of the boot.
The light smoke continued for the duration of the test.
At 199,minutes, smoke was coming from the 8 in. dia. pipe sleeve (No. 9) sealed with SF150L and containing four stainless steel tubes.
At 233 minutes the 'silicone boot assembly (No. 11), without the fire retardant backing, tilted downward slightly.
No other changes occurred in the appearance of the unexposed surface for the 5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> duration of the test..
FA RY MUTUAL RESEARCH CORPORATION Page 8
24963 Observations after the Test At 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> of exposure the test was terminated and the assembly was removed from the furance.
All SF20 foam seals. were flaming as the assembly was withdrawn from the furnace.
The silicone fabric boot seal (No. 12), protected with the fire retardant
- backing, showed no visible effect from the fire exposure,
- however, the ni-chrome wire mesh was glowing red.
The wall was cooled and the burning material quenched with water.
One of the 4 in. dia. pipes (No.
- 14) sealed with SF20 foam was examined.
It was found that the exposed surface had developed a hard char progressing to uneffected foam over 8 in. of the depth of the seal.
Illustrations 17 and 18 show the unexposed surface at 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> of exposure and the exposed surface after the test.
Tem eratures of the Unex osed Seal Surfaces The temperatures that developed during the test and the thermocouple locations are shown on Illustration 15.
The standard states that limiting end point temperatures are reached when heat transmission through the assembly is sufficient to raise the average temperature 250F above ambient temperature or when the temperature of any individual point raises 30 percent in excess of the allowable 250F rise.
In this test the initial temperature wasI,67F, therefore, based on the above conditions the average limiting temperature was 317F and the individual limiting temperature was 392F.
In this test the performance under fire exposure of discrete elements was evaluated, not a wall assembly.
Xn the opinion of this testing laboratory, the determination of acceptable temperature limits is the responsibility of the authority having jurisdiction, based on the end use conditions of the penetration seals.
Analysis of the unexposed
- surface, temperatures at the penetration seal surface shows that the measure temperature at Thermocouple 4 exceeded the individual limiting temperature of 392F at 4 hr.
and 6 minutes.
This thermocouple was located at the 8 in. dia. pipe sleeve (No. 8) sealed with SF250L foam and with the unexposed face covered with fPB-1600 insulation.
Thermocouple 5 placed on the 8 in. dia. pipe sleeve (No. 9) sealed with SF150L foam and faced with MFB-1600 insulation on both sides reached 392F at 4 hr.
and 34 minutes.
Thermocouple 9 on the 12 in. dia. pipe sleeve (No.
- 3) sealed with SF300L foam and MFB-1600 insulation on the unexposed face reached 392F of 4 hr.
and 35 minutes.
Steel Pi e and Cable Tem eratures The temperatures of the steel pipes,
- sleeves, electrical cables and cable trays was measured at 16 locations as shown on illustration 16.
The temperatures are included for general fire performance information.
'E I
,24963 Page 9
CONCLUSIONS FIRE RESISTANCE PROPERTIES:
The penetration seals as described in this report were subjected to fire exposure for five hours in accordance with the ASTM Standard Time-Temperature Curve.
The silicone rubber penetration seals and flexible reinforced silicone rubber boot penetration seals prevented the passage of flame and excessive smoke through the wall assembly during the test.
The transmission of heat through the silicone rubber seals was below 400'F for a duration in excess of four hours.
The temperatures of the unexposed surfaces of the silicone rubber boot penetration seals were not evaluated during the fire endurance test.
PRODUCT UNIFORMITY:
Factory Mutual Research Corporation makes no judgement of product uniformity solely as a result of this fire test.
Product uniformity depends in part on manufacturing facilities and procedures which would be inspected under Factory Mutual quality assurance follow-up inspection program and on a written agreement put in force between both the product manufacturer and Factory Mutual.
The components used in the construction of this assembly are not under this quality assurance inspection program.
LABORATORY RESPONSIBILITY:
Factory Mutual Research Corporation makes no judgement of product suitability for its intended end-use.
Product acceptance of field installation are usually the prerogative of the authority having jurisdiction.
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MUTUAL RESEARCH CORPORATION 2CC 963 C,
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24963 TORY MUTUAL RESEARCH CORPORATI Page 23 C.. r((V r'.i.r 0'r).) )9 .r. ~ P! T(~+4 g(((( g, r r t ('r rr rr rr f t r rr pr r r II~ , I T ILLUSTRATION 17 UNEXPOSED SURFACE AT 5 HOURS OF EXPOSURE ~ ~',(' r,>>j ~ ~ ~ ~ I I ~ < v V ~ I &~((r \\ rm~rr f ',r'JPg 'p,.2. '7 C C L I ( ~ ( ( f~ I , ~ r r ~ r (3385-13) ILLUSTRATION 18 EXPOSED SURFACE AFTER FIRE ENDURANCE TEST .v~ r(kr (E .-..i(()' @~ a>>. t rC~~r r~T, S~r-,~((S, ~ ~~~>> (~~~t~+~i~~f ~ ~ ~ ~ l(s.O (, ~ sf (3385-14)
F ORY tiUTV>L aESCn RCH CORPGRAtlo page 24 24963 TEST BY: Fire Technology Group National Gypsum Co. Design ): 374
- Report, chnical Supervision of Construction and Fire Test By:
W. R. Price Factory Mutual Project Engineer REVIEWED BY: W. F ~ Shield Assistant Chief Materials Engineer Codes/Ratings Factory Mutual Research Corporation ATTACHMENT: Appendix Sheets Al A4, Bl and Cl C6. WFS/mi
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