ML20084R292
| ML20084R292 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/16/1984 |
| From: | FACTORY MUTUAL RESEARCH CORP. |
| To: | |
| Shared Package | |
| ML20084R284 | List: |
| References | |
| ASTM-E814-81, NUDOCS 8405220282 | |
| Download: ML20084R292 (41) | |
Text
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l I kKfVnraCUT 2 h bc(Xc1 dDS SoO99 60 -2T ASTM E814-81 FIRE ENDURANCE AND HOSE STREAM TESTS On WALL PENE1 RATION FIRE STOPS DESIGN WP 713 for PHIIADELPHIA ELECTRIC COMPANY 2301 MARKET STREET - N2-1 PHILADELPHIA, PENNSYLVANIA 19101 l
J.I. IJ2Q 2. AC (499'))
FEBRUARY 16, 1984 w .: < , , ,
Factory Mutual Research 8405220282 840516 hDRADOCK 05000277 PDR
NOT to be distributed outside the FACTORY MUTUA L SYSTEM, except by CLIENT.
ASTM E814-81 FIRE ENDURANCE AND HOSE STREAM TESTS on WALL PENETRATION FIRE STOPS DESIGN WP 713 for PHIIADELPHIA ELECTRIC COMPANY 2301 MARKET STREET - N2-1 PHIIADELPHIA, PENNSYLVANIA 19101 l
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l l J.I. IJ 2Q 2. AC (4990)
FEBRUARY 16, 1984 i
Factory Mutual flesearcle 1151 Boston-Providence Turnpike P.O. Box 688 Norwood, Massachusetts 02062
kW Factory Mutual Research 1161 floston Providcore finnpike P,0. Ilow 0118 Norwooit, Mannhowttt 02002 IJ2Q2.AC Fahruary 16, 1984 (4990)
NITH E814-81 FIRK KNDilRANCK AND ll0SK STRKAN TESTS on WAl.I. pKNKTRATION FIRK flTOPS DK!!!CN WP 711 for Pill!ADK!, Pill A E!.KCTRIC COMPANY 2301 MARKKT flTRKET - N2-1 pil!!ADK!, Pill A, PKNN!!YINANI A 19101 CKNERAI.
Thin report ilencriben thn construction, thn tent pro ccitu ro , anil lints the res ul t s of fire eniluranco an<l hono stream testa conchictcil on twolve through penetration firo ntops inntalloit in a manonry wall. The tent wan coniloc t oil on November 1, 1981, at the National Cypntun Company Itanonrch Cent nr, nuf f alo, New York f or Philnitelphin Klectric Company. Tho construc tion an<l fire tont of the annembly worn witnennoil by n representative of Factory Mutual Rennarch Corporation.
The object of thin tent program was to invest i gnto the fire enclurance proporties of ench throingh-penetration fire ntop cosintruction in terms of F anit T rat i ngs hanoil on coniliti ons notoil in the Stantinril Methotl of Firo Tonta of Through-Penetration Piro !! tops, ASTM M814-81.
Tho penet rat ion noni mystems worn exposed to fire for a 1-hour duration followeit by the home atream tont.
l FACTORY MUTUAL RESEARCH CORPORATION Page 2 IJ2Q2.AC DESCRIPTION OF MATERIALS The materials used in the constrection of the test assembly are described below:
Pipe Sleeves - Six and 16 in. (152.4 and 406.4 mm) diameter standard weight steel pipes were used. The wall thickness of the 6 in. (152.4 mm) dia, pipe was k in. (6.35 mm) and the 16 in. (406.4 mm) dia. pipe was 3/8 in.
( 9. 52 mm) . All the pipes were 12 in. (304.8 mm) long.
Cable Trays - Fabricated from aluminum with channel shaped rails and the legs of the channels pointing outward. The rails were 0.075 in. (1.90 mm) thick, 5% in. (133.4 mm) wide with 13/16 in. (20.6 mm) long legs. The inside distance between the rails was 24 in. (609.6 mm) and between the rails were circular rungs 1 in. (25.4 mm) in diameter and 9 in. (228.6 mm) on center.
The trays were all 24 in. (609.6 mm) long. The cross-sectional area of the tray was established as 90 in.2 (o,058 m2).
Electrical Cables - The fo17 owing cables were used in the fire stops and the designation of each cable used in this report is shown. The cable marking and diameter are as noted:
No. 1: BRAND-REX SHIELDED INSTRUMENTATION CABLE I PR 18 300V with an outside diameter of 0.35 in.
No. 2: 10 AWG 2/C ROCKBESTOS 600V FIREWALL III with an outside diameter of 0.50 in.
No. 3: BRAND-REX 9/C #14 600V with an outside diameter of 0.625 in.
No. 4: 14 AWG 7/C ROCKBESTOS 600V FIREWALL III with an outside diameter of 0.535 in.
No. 5: ROCKBESTOS RSS-6-208B with an outside diameter of 0.40 in.
No. 6: ROCKBESTOS 1978-8A1094 with an outside diameter of 0.60 in.
No. 7: 14 AWG 3/C ROCKBESTOS 600V FIREWALL III with an outside diameter of 0.42 in.
No. 8: 14 AWG 12/C ROCKBESTOS 600V FIRFWALL III with an outside diameter of 0.70 in.
No. 9: BRAND-REX SHIELDED INSTRUMENTATION' CABLE 7 PR 18 300V with an outside diameter of 0.72 in.
No. 10: No writing on outside jacket. PVC jacket with 19 conductors and an outside diameter of 0.55 in.
FACTORY MUTUAL RE SE ARCH CORPORATION IJ2Q2.AC Page 3 Pipe and Conduit - Nominal 2 in. (50.8 mm) diameter standard weight steel pipe and conduit.
Forming Material - Nominal in. (12.7 mm) thick Marinite board manuf actured by Johns-Manville Corp. The board was received 36 in. (914.4 mm) long by 9 in. (228.6 mm) wide and the average thickness was 0.462 in. (11.7 mm).
Fill Materials - Several different fill materials were used in the various fire stops. They are described below:
A. Ceramic Fiber - Used in loose form, manufactured by Babcock & Wilcox and designated as Kaowool.
B. Polyurethane Foam - A two component system made by Insta-Foam Products Inc. and designated as No. 9.5 Froth Pak Kit indicated as having a designed density of 1.75 lb/ft3 (28 kg/m3),
C. Grout - Embeco 636 Grout made by Master Builders, Div. of Martin Marietta.
Sealing Material - Quelpyre Mastic 703-B, trowelable, manuf actured by Quelcor.
Fasteners - The fasteners used in the construction of the assembly are described under the heading of Erection of Test Assembly.
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FACTORY MUTUAL RE SE ARCH CORPORATION l Page 4 IJ2Q2.AC l
INSTALLATION OF FIRE STOPS !
! l The fire stops were installed in a nominal 12 in. (304.8 mm) thick concrete block wall with the block having been laid in a full mortar bed. The wall containing the fire stops was 10 ft. (3.05 m) wide by 11 f t. - 4 in. (3.45 m) '
- hi gh .
, As the block wall was erected, a 12 in. (304.8 mm) deep precast concrete l sleeve was installed at all of the proposed fire stop locations except at the i Fire Stop J location. At this location a nominal 8 in. (203.2 mm) thick concrete block was employed.
I The construction of each fire stop penetration is shown on Illustrations 2 through 9. A description of each fire stop follows:
2 Fire Stop A - Nominal 16 in. (406.4 mm) diameter steel pipe sleeve was embedded within the 32 in. (812.8 mm) square precast concrete unit. Centered within the pipe sleeve was a 2 in. (50.8 mm) diameter steel pipe penetration contained within a 3 in. (88.9 mm) diameter by 6 in. (152.4 mm) long steel pipe collar. The pipe penetration and collar were welded to a 1 in. (25.4 mm) thick by 26 in. (660.4 mm) square steel plate. This assembly was secured to ,
the fire side of the wall with twelve, 1 in. (25.4 mm) diameter Hilti Kwik-Bolt concrete anchors - 6 in. (152.4 mm) long.
- The 2 in. (50.8 mm) diameter pipe projected 7 in. (177.8 mm) beyond the steel
. plate at the fire side and welded to the end of the pipe was a k in. (6.35 mm) thick by 3 in. (88.9 mm) square steel plate. The pipe projected 2 in.
(50.8 mm) beyond the wall surface of the unexposed side of the wall and the j end of the pipe was lef t open.
The cavity between the 16 in. (406.4 mm) pipe sleeve and the 2 in. (50.8 mm) pipe was packed with Kaowool for the 12 in. (304.8 mm) depth.
} Fire Stop B - A rectangular opening 30 in. (762.0 mm) wide by 12 in.
! (304.8 mm) high containing a ladder type aluminum cable tray centered within i the opening.
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The cable tray was supported in the wall opening' by 4 in. (101.6 mm) long 2
k in. (6.35 mm) diameter steel bolts as shown on ' Illustration 11. The 1 threaded portion of each bolt was secured to the lower flange of the tray with I
two nuts and the head of each bolt rested on the concrete. There were four ;
j bolts per tray located at the edge of the concrete opening. '
- The exposed and unexposed side of the rectangular fire stop was covered with a i_ single layer of nominal in. (12.7 mm) thick Marinite board. The Marinite i board was 36 in. (914.4 mm) by 9 in. (228.6 mm) and installed with two pieces at each side of the fire stop positioned so that a horizontal joint occurred .
at the center of the opening. The Marinite was cut around the electrical i cables and cable trays to provide approximately % in. (12.7 mm) clearance. l 1
i FACTORY MUTUAL RE SE ARCH CORPORATION 1J2Q2.AC Page 5 The Marinite was secured to the concrete with k in. (6.35 mm) diameter, 1 in.
(25.4 mm) long No. 20 machine screws 7/16 in. (11.1 mm) dia heads. The screws were secured in the concrete with 3/8 in. (9.52 mm) 0.D. by 1 in.
(25.4 mm) long Hilti HDI Drop In Anchors. To receive the anchors , 3/8 in.
(9.52 mm) diameter holes were drilled through the Marinite into the concrete.
The machine screws were located 11 in. (279.4 mm) o.c. horizontally, 6 in.
(152.4 mm) o.c. vertically for each piece of Marinite and 1 in. (38.1 mm) from the outside edge of the board. See Illustration 12.
The cables and tray extended 6 in. (152.4 mm) beyond each surface of the wall. Cables were not separate or segregated in any particular manner in the tray.
The above relates to Fire Stops B, G, H and I.
At Fire Stop B the electrical cables contained in the tray were - seven of No. I cables , eight of No. 2 cables, 16 of No. 4 cables, 52 of No. 6 cables ,
65 of No. 8 cables, 29 of No. 9 cables and two of No. 10 cables.
Approximately 64% of the cross-sectional area of the tray was filled with the electrical cables.
The Marinite board was installed on the unexposed side of the fire stop and secured as previously described. The entire fire stop cavity was packed with Kaowool and the Marinite board was secured to the exposed side. At the exposed and unexposed surf aces the voids between the cables and cable tray were packed with Kaowool. Also the voids between the edge of the Marinite board and the cables and cable tray were similarly packed to insure a tight seal.
On the outside surface of the Marinite board a k in. (6.35 mm) thick coating of Quelpyre Mastic 703-B was trowel applied to the fire exposed and unexposed side of the fire stop. The mastic was applied in two 1/8 in. (3.18 mm) coats with approximately 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> allotted between applications. The coating extended over the outside edge of the Marinite board and onto the concrete block wall surf ace f or approximately 4 in. (101.6 mm) at the periphery of the stop. The surf aces of the cables and cable tray extending away from the Marinite on each side of the wall were also coated with k in. (6.35 mm) thickness of mastic brush applied in two applications. The ends of the cables on the unexposed side of the wall were not coated with mastic.
Fire Stop C - Nominal 6 in. (152.4 mm) diameter steel pipe sleeve was embedded within the 16 in. (406.4 mm) square precast concrete unit. Eighteen electrical cables were located in the pipe - two of No. I cables, five each of No. 2 and No. 4 cables, four of No. 5 cables and one each of No. 6 and No. 7 cables. The cables were placed at random within the sleeve and positioned near the bottom of the sleeve. The fire exposed end of the sleeve was packed with Kaowool to a depth of 3 in. (76.2 mm). The cables were held away from the sleeve and separated from other cables by distance of in. (12.7 mm) l
FACTORY MUTUAL RE SE ARCH CORPORATION Page 6 IJ2Q2.AC employing the use of Kaowool. At the unexposed end of the sleeve, the cables were held away from the sleeve and separated from other cables with pieces of cured polyurethane measuring in. (12.7 mm) thick by 1 in. (25.4 mm) long.
These separators were placed approximately 1 in. (25.4 mm) in from the end of the sleeve. The cables extended 6 in. (152.4 mm) beyond each end of the sleeve. The end of each cable on the fire side was coated with % in.
(6.35 mm) thickness of Quelpyre mastic.
The remaining volume of this sleeve was then filled with polyurethane foam applied from the unexposed side with care to assure that the urethane was received below and between the cables using the Froth Pak Kit dispenser. A temporary dam was placed at the unexposed end of the sleeve to hold the material. Af ter the foam cured, the dam was removed and the excess urethane was cut-off flush with the end of the sleeve at the unexposed side.
Fire Stop D - Contained the following 18 cables: three No. 2 cables , twelve No. 5 cables and three No. 6 cables. The other construction details were the same as Fire Stop C except the unexposed side of C is now the fire exposed side of D.
Fire Stop E - Contained the following 6 cables: three No. 2 cables , two No. 5 cables and one No. 6 cable. The other construction details were the same as Fire Stop C except the unexposed side of C is now the fire exposed side of E.
Fire Stop F - Nominal 6 in. (152.4 mm) diameter pipe sleeve was embedded within the 16 in. (406.4) square precast concrete unit. Centered within the sleeve was a 2 in. (50.8 mm) diameter steel pipe supported at each side of the wall with 0.103 in. (2.62 mm) diameter steel wire. The wire was looped around the bottom of the pipe and supported at the top by one masonry nail driven into the wall .
At the fire exposed end, the void between the sleeve and the 2 in. (50.8 mm) diameter pipe was packed with Kaowool to a depth of 3 in. (76.2 mm). The remaining volume between the 21eeve and pipe was filled with polyurethane foam applied f rom the unexposed side using the kit dispenser. As previously described a temporary dam was placed at the end of the sleeve during foaming and then removed. The excess urethane was cut off flush with the end of the sleeve.
The 2 in. (50.8 mm) diameter pipe projected 4 in. (101.6 mm) into the fire and was 23 in. (584.2 mm) long. A steel plate 1/8 in. (3.18 mm) thick by 4 in.
(101.6 mm) square was welded to the end of the pipe exposed to fire. The end of the pipe at the unexposed side was lef t open.
The end of the pipe at the unexposed side had a steel strap behind it and the ends of the strap were secured to the wall with masonry nails. The strap was 2\ in. (63.5 mm) wide and it was not f astened to the end of the pipe. The strap prevented longitudinal movement of the pipe in the stop. The strap was used to simulte a continuous pipe supported by hangers.
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FACTORY MUTUAL RE SE ARCH CORPORATION IJ2Q2.AC Page 7 Fire Stop G - Rectangular opening 30 in. (762.0 mm) wide by 12 in. (304.8 mm) high containing a ladder type aluminum cable tray with approximately 42% of its cross-sectional area filled with electrical cables.
The cable tray and cables were installed as noted under Fire Stop B.
At Fire Stop G the electrical cab
- es contained in the tray were - 129 No. 2 cables , one No. 5 cable, eighteen No. 6 cables , 22 No. 7 cables , Five No. 8 cables and nine No. 10 cables.
The Marinite board was installed on the fire exposed and unexposed sides of the stop as defined under Fire Stop B. At the exposed and unexposed surfaces the voids between the cables and cable tray were packed with Kaowool. Also the voids between the edge of the Marinite board and the cables and cable tray were similarly packed to insure a tight seal.
Eight 5/16 in. (7.94 nun) diameter holes were drilled through the Marinite board into the fire stop cavity on the exposed and unexposed sides. The holes were located horizontally, four above the cable tray and four below on each side of the stop. The hoses were approximately 7 in. (177.8 mm) o.c.
Using the polyurethane foaming kit dispenser, foam was injected through each hole in the Marinite board starting at the bottom holes on each side of the wall then proceeding to those at the top.
During the foaming, the Marinite board was held in position with a steel bar placed horizontally at the exposed and unexposed side. The bars were held below the cable tray when foaming at the bottom and then relocated above the tray when foaming at the top. The bars were used to prevent bowing outward of the Marinite board. Six kit dispensers were used for the fire stop.
A is in. (6.35 nua) thick coating of Quelpyre Mastic 703-B was trowel applied to the outside surf ace of the Marinite board on the fire exposed and unexposed sides of the fire stop as previously described for Fire Stop B. Also the cables , cable tray and wall were coated as described for Fire Stop B.
Fire Stop H - Rectangular opening 30 in. (762.0 nrn) wide by 12 in. (304.8 mm) high containing a ladder type aluminum cable tray with approximately 38% of its cross-sectional area filled with electrical cables.
The cable tray and cables were installed as noted under Fire Stop B.
At Fire Stop H the electrical cables contained in the tray were - 41 of No. 2 cables, 92 of No. 4 cables, 24 of No. 5 cables, 5 of No. 8 cables and 2 of No. 10 cables.
Marinite board was installed on the fire exposed side of the fire stop and secured as defined under Fire Stop B. Kaowool was packed in the cavity of the fire stop to a depth of 3 in. (76.2 mm) on the fire side. Similarly, Marinite board was installed on the unexposed side of the fire stop. At the exposed and unexposed surfaces the voids between the cables and cable tray were packed with Kaowool. Also the voids between the edge of the Marinite board and the cables and cable tray were similarly packed to insure a tight seal.
FACTORY MUTUAL RE SE ARCH CORPORATION Page 8 IJ2Q2.AC Eight 5/16 in. (7.94 mm) diameter holes were drilled through the Marinite board into the fire stop cavity on the unexposed side. The holes were located horizontally, four above the cable tray and four below. The holes were approximately 7 in. (177.8 mm) o.c.
Using the polyurethane foaming kit dispenser, foam was injected through each hole in the Marinite board starting at the bottom holes then proceeding to those at the top. Four kit dispensers were used.
During the foaming the Marinite board was held in place using the method noted under Fire Stop G.
A \ in. (6.35 mm) thick coating of Quelpyre Mastic 703-B was trowel applied to the outside surf ace of the Marinite board on the fire exposed and unexposed sides of the fire stop as previously described for Fire Stop B. Also the cables, cable tray and wall were coated as described for Fire Stop B.
Fire Stop I - Same construction details as Fire Stop H except the unexposed side of H is now the fire exposed side of I.
Electrical cables contained in tray: 53 of No. I cables , 8 of No. 2 cables ,
59 of No. 3 cables, 34 of No. 4 cables, 10 of No. 8 cables and 4 of No. 10 cables. The cables occupied 41% of the cross-sectional area of the cable tray.
Fire Stop J - This stop was located in a concrete block 8 in. (203.2 mm) deep by 7 5/8 in. (193.7 mm) high by 15\ in. (393.7 mm) long. The concrete block walls were 2 in. (50.7 mm) thick and the block contained two equal cavities.
A 4 in. (101.6 mm) diameter hole was predrilled through the thickness of the block and centered through one of the cavities. Centered within the hole was a 2 in. (50.8 mm) diameter steel pipe supported at each side of the wall by wire as previously described.
The pipe was grouted into the concrete block at each side of the block for the 2 in. (50.8 mm) depth of the block wall-thickness. The grout was applied 14 days before the fire test.
The fire exposed side of this concrete block was flush with the surface of the wall. The steel pipe projected into the fire 7 in. (177.8 mm) and its overall length was 21 in. (533.4 mm). The end of the pipe exposed to fire had a welded steel cap while the unexposed end was open. A strap went across the unexposed end as previously described for Fire Stop F.
Fire Stop K - Nominal 6 in. (152.4 mm) diameter pipe sleeve was embedded within the 16 in. (406.4 mm) square precast concrete unit. Centered within the sleeve was a 2 in. (,. 8 mm) diameter steel conduit supported by wire at each side of the wall as previously described.
The volume between the sleeve and conduit was filled with polyurethane foam.
The foam was for the full depth of the wall applied from the exposed side as previously described with temporary dass at each end of the sleeve.
FACTORY MUTUAL RE SE ARCH CORPO R ATION IJ2Q2.AC Page 9 A k in. (6.35 mm) thick coating of Quelpyre Mastic 703-B was trowel applied to the unexposed side in two 1/8 in. (3.18 mm) coats with approximately 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> allotted between applications.
The conduit extended 7 in. (177.8 mm) beyond each end of the sleeve. The fire exposed end had a welded cap while the unexposed end was lef t open. A strap went across the unexposed end as previously described for Fire Stop F.
Fire Stop L - Similar construction to Fire Stop F except with 2 in. (50.8 mm) diameter steel conduit. Conduit centered in sleeve and supported by wire at each side of wall as previously described.
The unexposed end of the sleeve was packed with Kaowool to a depth of 3 in.
(76.2 mm). The remaining volume was filled with polyurethane foam applied f rom the exposed side using the kit dispenser as previously described. The conduit extended 7 in. (177.8 mm) beyond each end of the sleeve. The fire exposed end had a welded cap while the unexposed end was lef t open. A strap went across the unexposed end as described for Fire Stop F.
FACTORY MUTUAL RE SE A RCH CORPOR A110N Page 10 IJ2Q2.AC FIRE ENDURANCE TEST This test and the hose stream test were conducted in accordance with the Standard Method of Fire Tests of Through-Penetration Fire Stops, ASTM E814-81. The standard test furnace of the National Gypsum Company for wall assemblies was used f or the test.
METil0D T he furnace temperatures were measured by eleven thermocouples symmetrically located in the furnace chamber as shown on Illustration 18. The unexposed surf ace temperatures of the wall, penetration seals and cables were measured with thermocouples as shown on Illustrations 19 through 25. Each thermocouple was covered with a dry insulating pad, 2 x 2 in. (50.8 x 50.8 mm) to provide thermal insulation.
The furnace fire was started, exposing one side of the assembly to gas flames of controlled severity and extent in accordance with the Standard Time-Temperature Curve .
Throughout the fire exposure, observations were made to note the character of the fire and its control, the condition of the exposed and unexposed surf aces ,
and all developments pert i nent to the performance of the assembly with ref erence to stability, passage of flame and generation of smoke.
RES ULTS :
Character and Distribution of the Fire - The fire was luminous and well distributed throughout the furnace during the test. The furnace temperatures were controlled in accordance with the Standard Time-Temperature Curve as shown on Illustration 18.
Observations of the Exposed Surf ace - At 4 minutes of fire exposure, the electrical cables in Fire Stops C and D were flaming. At 5 minutes, the cables in all the cable trays (Fire Stops B, G,11 and I) were flaming and the surf ace of the mastic coated Marinite board appeared to be flaming. The flame length was 2 ft. (609.6 mm) maximum. By 7 minutes the cables in Fire Stop D continued to flame and the maximum flame length was approximately 12 in.
(304.8 mm). At 8 minutes , the surf ace flaming on the coated Marinite board had stopped; however, the cables in the trays continued to flame. Also the cables in Fire Stop E were flaming and the flames were about 6 in. (152.4 mm) long. At 14 minutes, a less intensity of the flaming was noted at the cables contained in the trays.
At 20 minutes, the concrete at the bottom of Fire Stop 11 had spalled resulting in a sna11 segment of the Marinite board f alling from the stop. At 26 minutes, the flame length coming from the cables in Fire Stops C and D vere 4 to 6 inches (101.6 to 152.4 mm). At 30 minutes, there appeared to be slight surface flaming at Fire Stops E, K and L. At 40 minutes, the flame length at
FACTORY MUTUAL RESEARCH CORPORATION IJ2Q2.AC Page 11 the cables in the trays ranged from 1 ft. (304.8 mm) to 2 ft. (609.6 mm) l on g . At 67 minutes, there were slight flames coming from the cables or fire stop material in Fire Stops D, E, K and L and it was also noted a cavity existed in the fire stop material. The depth could not be determined. At 102 minutes, the portion of each cable tray projecting into the fire had melted away and the electrical cables in all trays continued to flame with flames about 12 in. (304.8 mm) long. Approximately 75 percent of the mastic material covering the Marinite board had f allen and the mastic appeared to be peeling f rom the surf ace of the cables in each tray.
At 117 minutes, an additional segment of the Marinite board at the bottom half of Fire Stop 11 fell from the wall thus exposing the Kaowool. At 140 minutes, the electrical cables in all the trays continue to flame. The Marinite board was intact on all fire stops constructed using it except Fire Stop H as previously described. No further changes were noted on the exposed surf ace of the assenbly f or the remainder of the test.
See Illustration 26 for a view of the exposed surf ace af ter the fire endurance test.
Observations of the Unexposed Surf ace - At 36 minutes of exposure, there was a slight amount of smoke coming f rom the electrical cables in Fire Stop B. At 90 minutes, there was condensed water vapor or light colored smoke coming from the cable area of all fire stops containing cable trays (Fire Stops B, G,11 and I). Also there was moisture on the cable jackets of the cables contained in Fire Stops 11 and I. At 96 minutes, there was a light amount of smoke coming f rom between the cables of Fire Stop I.
At 110 minutes, the end of one cable contained in Fire Stop I was cherry red and the insulation contained within the jacket of the other cables was dripping f rom the ends of the cables. At 114 minutes, an area between the cables of Fire Stop I was cherry red. The area was about 2 in. (50.8 mm) in di am e t er. At 117 minutes, there was flaming of the cables at the Marinite board of Fire Stop I. The flames were about 4 in. long, Kaowool was placed on these cables to extinguish the flames.
At 150 minutes , the cables in Fire Stops B, G and 11 continued to smoke as previously described at 90 minutes. No further changes were noted on the unexposed surf ace during the test.
See Illustration 27 for a view of the unexposed surface at 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> of exposure.
The pressure in the furnace chamber was 0.04 in. of H 2O (9.96 Pa) below atmospheric pressure throughout the fire test. The pressure was measured at the center of the furnace.
Temperatures at Unexposed Side of Stops - The temperatures that developed during the test and the thermocouple locations are shown on Illustrations 19 through 25.
FACTORY MUTUAL RESEARCH conPORATION Page 12. IJ2Q2.AC A T rating may be assigned each fire stop that satisfies the fire endurance and the hose stream requirements of the ASTM E814-81 Standard. The T rating is based on the transmission of heat through the fire stops during the rating period. The T rating is determined by the. rise in temperature on the unexposed surface of the fire stop or on any penetrating item. The temperature rise cannot be more than 3250F (1630C) above the initial temperature. The initial temperature was established to be 700F (210C).
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, a T FACTORY MUTUAL RE SE ARCH CORPORATION IJ2Q2.AC Page 13 HOSE STREAM TEST The same wall containing the fire stops used for the Fire Endurance Test was subjected to the hose stream application af ter 180 minutes of fire exposure.
MET 110D :
The exposed and unexposed surf aces before the hose streem test are shown on Illustrations 26 and 27.
Immediately af ter fire exposure of 180 minutes the assembly was subjected to the impact, cooling and eroding action of a hose stream for 2.5 minutes. The stream was delivered through a National Standard Playpipe having a 1-1/8 in.
(28.6 mm) diameter discharge tip. The distance from the tip of the nozzle to the wall assembly was 20 ft. (6.1 m) less 2 f t. (609.6 mm) due to the angle of the nozzle with respect to the center of the wall. The pressure was 30 psi (207 kPa) measured at the nozzle base and the hose stream was applied uniformly over a 10 ft. ( 3.05 m) high by 10 f t . (3.05 m) wide surf ace area of the wall assembly with the fire stops centered within this area.
Throughout the test, observations were made to note the general condition of the test assembly resulting from the hose stream application, and all other results considered pertinent to the perfonnance of the fire stops.
RES ULTS :
Observations During the Hose Stream Test - During the hose stream test water projected beyond the unexposed side of Stops D, E, K and L. Water did not project beyond the unexposed side of Stops A, B, C, F, G, H, I and J.
Observations Af ter the Hose Stream Test - The appearance of the exposed and unexposed surf aces of the assembly af ter the application of the hose stream and subsequent cooling are shown on Illustrations 28 and 29.
For all the fire stops containing electrical cables, the majority of the cable jacket and insulation f or each cable was gone on the fire exposed side.
Fire Stop A - There was no noticeable change at the fire exposed or unexposed side of the stop.
Fire Stop B - Little noticeable change on unexposed side. Some discoloration of the mastic on the cables and the Marinite board above the cables. On fire exposed side, all of the Marinite board and the ladder tray was gone. The cables were as described above. A surf ace cavity existed in the seal.
Fire Stop C - Little noticeable change on unexposed side except the top of the seal had displaced beyond the wall surface about in. (12.7 mm). No noticeable change to the cables occurred at the unexposed side.
~ - - - --. _ . -- .- . . _ _
FACTORY MUTUAL RESEARCH CORPORATION Fage 14 IJ2Q2.AC On the exposed side, the cables deteriorated as previously described and there was a cavity in the seal material up to about 2 in. (50.8 nun) in from the exposed surf ace of wall.
Fire Stop D - On the unexposed side there was a through opening at one side of the stop. There was no noticeable change in the cables. On the exposed side there was a deep cavity in the seal material and the cables had deteriorated ,
as previously described.
Fire Stop E - The majority of the fire stop material was gone from seal and there was a large through opening in the seal.
Fire Stop F - No noticeable change on unexposed side. On the exposed side there was a cavity in the seal material which was approximately 2 in.
(50.8 mm) deep.
Fire Stop G - Little noticeable change on unexposed side. Some discoloration
, of the mastic on the cables and the Marinite board located above the cables.
On fire exposed side, all of the Marinite board and the ladder tray was gone.
The cables were as described previously. Also there was a deep cavity in the i seal material.
Fire Stop H - Same as that described for Stop G.
Fire Stop I - On unexposed side, heavy discoloration of the mastic on the cables and on the Marinite board above the cables. Some charring of cable jackets near surface of the seal. Surface flaming had occurred on the cables during the fire test.
On exposed side, all of the Marinite board and the ladder tray was gone. The cables were as described previously. Also there was a deep cavity in the seal mat erial .
Fire Stop J - No change occurred to the seal on fire exposed or unexposed sides.
Fire Stop K - On unexposed side, slight discoloration of mastic material and mastie material pulled away freu wall at top letting water project through the seal during the hose stream test. On exposed side, a large cavity in the seal.
t
- Fire Stop L - On unexposed side, a through opening existed at top of the-i seal. Cn unexposed side, large cavity in seal with majority of seal material gone. -
l t
h i~ --
f i FACTORY MUTUAL RE SE ARCH CORPORATION IJ2Q2.AC Page 15 CONCLUSIONS Fire Stops A, B, C, F, G, H and J satisfied the fire endurance and hose stream requirements of the ASTM E814-81 Standard of Through-Penetration Fire Stops for a 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> F rating.
Fire Stops D, E, I, K and L failed to satisfy the requirements of the ASTM E814-81 Standard f or a rating.
Fire Stop I failed due to flaming on the unexposed side during the fire endurance test and Stops D, E, K and L f ailed the hose stream due to water projecting beyond the unexposed side.
Fire Stops A, B, C, F, G, H and J achieved T ratings based on the transmission of heat through the fire stops during the rating period. The T rating is determined by the rise in temperature on the unexposed surf ace of the fire stop or on any penetrating item. The temperature rise cannot be more than 3250F (16300) above the initial temperature which was established at 700F (210C). Stops A, F and J achieved 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> T ratings and Stop C achieved a 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> T rating.
Since the dif ferent cables in each cable tray fire stop were not segregated into groups, the T rating obtained applies to the entire fire stop and not to the individual cable types in each stop. Therefore, Fire Stops B and G achieved 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> T ratings and H achieved a 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> T rating.
PRACTICABILITY:
To obtain the desired protection, it is necessary to specify the composition and thickness of materials, and the methods of construction as described in this report.
PRODUCT UNIFORMITY:
Factory Mutual Research Corporation makes no judgement of product uniformity solely as a result of ASTM E814 fire tests. Product uniformity depends in part on manuf acturing f acilities and procedures which would be inspected under Factory Mutual's Audit of Manufacturing and Quality Control, and on a written agreement in force between both the product manuf acturer and Factory Mutual.
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FACTORV MUTUAL RE SE ASCH CO2POR A110N Page 25 IJ2Q2.AC i
J - w.a-Il1USTRATION 10 i
Exposed Surf ace During g y
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FAC?ORV MUTUAL SE SE ARCH CORPOR AilON IJ2Q2.AC Page 27
-7 t n IILUSTRATION 14
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FACTORY MUTUAL DE SE ASCH CODPOR A TION Page 28 IJ2Q2.AC e ._ . m ,..
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ILLUSTRATION 16 I --
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IILUSTRATION 17 . FEM' ,,3 yd Unexposed Sur f ace Before
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