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| ML20079R032 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 09/21/1992 |
| From: | Mccracken C Office of Nuclear Reactor Regulation |
| To: | Chaimberlain D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| Shared Package | |
| ML20079Q777 | List: |
| References | |
| FOIA-94-137 NUDOCS 9209250132 | |
| Download: ML20079R032 (79) | |
Text
[6? O Y A
-September 21, 1992
.1 MEMORANDUM FOR: Dwight Ch erlain, Deputy Director Division of Reactor Safety -
Region IV FROM:
Conrad McCracken, Chief Plant Systems Branch Division of Systems Technology Office of Nuclear Reactor Regulation
SUBJECT:
REQUEST FOR REGIONAL OVERSIGHT OF TU THERMO-LAG TEST CONFIGURATION CONSTRUCTION AND TESTING Texas Utilities Electric Company (TV) will begin constructing Thermo-Lag ' test installations on September 26, 1992 at Omega Point Laboratories in San Antonio, Texas.
I am requesting assistance from your staff to oversee these configurational portions of the installation of the Thermo-Lag to assure the samples to be tested from October 26 through November 4,1992 represent typical configurations and techniques used by TU.
I am particularly seeking confirmation that enhancements such as those provided by Thermal Science, Inc.
in the. enclosed memorandum are not incorporated in the installation unless those enhancements are also included in the TU installation procedures.
Please contact Ralph Architzel at (301) 504-2804 or Isabel Moghissi at (301) 504-2852 for further guidance or additional background material (e.g.,
installation procedures) if necessary.
I
% by Conrad E. McCracken, Chief Plant Systems Branch Division of Systems Technology l
Office of Nuclear Reactor Regulation
Enclosure:
As stated ELBUTION w/ enclosure:
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'IllELECTRIC nm=Ta va'"" r
. CPSES9219864 June 16,1992 Mr. Ben Evans l
Thermal Science, Inc.
3900 Cassens Ddvs St. Louis,MO 88028
Dear Mr. Evans:
j Thermal Science, Inc (TSU Seld surveillance of the ap Omega Point Laboratories and performed an evalua observation. Most of the observations pertaining to the test assemblies (Technical Note 20684, Revision V) and therefore not installed Thermo-consistent with the Observations pertaining to construction anomalies process by our personnel at the laboratory or will be reviewed testing and corrected if necessary.
The purpon of our testing at Omega Point Laborawries is to confirm the performance of the Thermo-Lag Fire Barrier System installed at Comanche Peak Steam Electric Station (CPSES). We have therefore utillu techniques representative of the installation at CPS i
Thermo Lag is consistent with previous TSI guidance including on site j
training by T8I peisonnel and applicable CPSES design documents and procedures.
Eloetric to:These tests will provide comprehensive test documentation to enab 1.
Qualify ada*hg CPSES conSgurations as installed; 2.
Identify those configurations that require upgrade for further evaluation; i
8.
Provide data to support further analysis if required.
j P.o.nos tuoz che now.r.am 7eno QUG 1
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- n reference to our upgraded Cable Tray Test Assembly, our incorporation f new T8I raanmmendaelana has been based upon review of the recently oosived guidance and consideration of the practicality of rework of the as-natalled Thermo Img at CPSES.
We appreciate TSTs desire to incorporato recently developed installation Whniques to assure positive test results. However, this directionis not 3onsistent with the intent of our testing pmgram, nor our purpose for T8rs review of our test assemblies because it will not clearly demonstrate qualiBoation of the installed Thermo-Lag. Should you have any questions concerning this nsponse, please contact Mr. Jeff Shapelow at 817/897-6881.
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1 3 June 1992 TU Electric '
Comanche Peak Steam Electric Station Farm to Market Road 56 i
5 Miles Northwest of Glen Rose Glen Rose, TX 760431002 Attention:
Mr. Richard Casares Station CO7A - Comsnche Peak
Subject:
Field Service Surveillance Report TU - THERMO LAG Installation - Omega Point labor
DearMr.Casares:
a ories The following report will provide Texas Utilities with Materials to spectSc test articles at Omeactivities relat compiled from various field service su'ga Point Laboratories. This repo l
enclosed figures and photographs. Control to onsit s urther supplemented by the the THERMO LAG 330 Fire Barrier System M
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urse of the installation of articles, including the " upgrade test article", at Omega P ia er concluded that:
o nt laboratories, we have 1)
Utilities have been tested as a compl or Texas Science, Inc. While some elements of the installation h ermal opinion, these comprise "non tested" d M
ave been our 2) ns.
All of the test articles have construction co one hour are resistive capability to the e c ent equired protected.
eng The above addresses only the construction concerns pr Omega Point, and is not intended to reflect on the conditiesent i 330 Fire Barrier System installation at your MH% whi h hon of us.
c as not been inspected by THERMAL SCIENCE. INC.
- 2200 CASSENS OR
- Telecop.or (314) 3491207. MO 6
Mr. Richard Casares pfg]
Texas Utilities Thermal Sdence is only the manufacturer and supplier of THERMO-LAG 330 Fire Barrier System Materials. It is not an architectural or engineering consulting entity.
It submits its' recommendations in reliance that these will be reviewed by Texas Utilities architects and engineers prior to use.
Our concerns were presented in person on a routine basis and in writing to your (corrective action has not commenced. cognizant engineer in charge at
'We strongly urge your careful review of this summary report, and insure that the
,J essential corrective action commences prior to the test. In our opinion, in the i
absence of this you will not have a valid test or the type of are resistive performance l5 (that THERMO. LAG 330 Fire Barrier System can provide.
j You certainly.can count of TSI's support when requested.
Our observations are presented in two categories. These are
- CENERAL OBSERVATIONS
- CONFIGURATION SPECIFIC OBSERVATIONS The general observations are common to nearly all test articles, and are therefore genere. The war observations apply to test articles as delinested herein.
GENERAL OBSERVATIONS A.
Improper Use of Stainless Steel Banding Material and Tie Wire Whleh CoiM R-l+ in An Karly Tant T.... hap =. and Failure t
This perhaps is one of the most serious concerns, since it was extensively used and effects allof the test articles.
It was observed and reported to TU personnel that bands and/or tie wires were improperly used as primary load arrying members for other tie wires and bands to support entire sections of prefabricated THERMO. LAG componenta.
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Mr. Richard Casares 3 June 1992 Texas Utilities Page3
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i The bands and/or tie wires were never intended to ps' w the double duty of providing for the mechanical attachment of the prefabricated THERMO-LAG sections to the test raceway, and also acting simultaneously as primary load carrying i
members for other tie wires and/or bands which support sizeable sections of THERMO LAG.
This method of support is not satisfactory and should not be used. During exposure to fire, the steel will lose a substantial portion of its load arrying capability. This may most likely cause and allow, at that time, affected prefabricated THERMO. LAG 330 sections to detach and permit direct flame penetration into the test assembly.
Photographs 1 through 15, which are provided by way of example rather than entirety, depict clearly the seriousness of the problem.
j Further accentuating the concern is the fact that a multiplicity of small wire segments were used. In some cases they were pieced by Mag them together, resulting in an assembly which is neither tight as good practice dictates.
In some instances, the tie wires seem to free float in the air.
Figure 1 depicts a special case where the structural conduit support assembly relies exclusively on the ability of a singular stainless steel band to perform the double function of supporting the THEMRO LAG 330 segment to the assembly and simultaneously the bottom segment via tie wires attached to it. This clearly will not work. The failure of this segment of the assembly willimpact the performance of the entire test article. A recommended fix is also presented in Figure 1.
B)
Imonely FletMr Bands or Tie Wires Some bandser tie wires were not sufficiently tightened dudng installation. These should be replaced. Photographs 16 and 17 are presented as an example.
O Premature Topcosting of Wet and Uncured THERMO LAG 330 Sublimine Trowel Crade Material l
It is the required y..ctice to ill! in all joints completely with THERMO LAG 330-1 Subliming Trowel Grade MatadaL It is also essential that these joints be completely cured in order to provide for a continuous uninterrupted fire barrier wrap over the entities being protected. Therefore, a minimum thickness comprising the thickness of the prefabricated items being installed must be present if the duration of fire resistance is to be obtained.
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~ Mr. Richard Casares Texas Utilities 3 June 1992 Page 4
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0 This is accomplished by generously prebuttering joints first, immediately prior to b'
assembly. Following this prebuttering, the materialis allowed to cure. h.
,.h THERM 4 LAG 3301 Subliming Trowel Grade Material shrinks about 25%
therefore, one or multiple additional applications of the product may be required t V
assure that the full thickness is present. It takes approximately 30 days for t to take place.
[Topcoating can be performed only after the material has completely (the Are expaare. entrapment will produce different results in the performa i
It was noticed that the topcoat was applied, almost without exception, on the after completion of the initialinstallation of the THERMGLAG 3301 Subliming Trowel Grade Material The ap su% plication of the topcoat prior to allowing for all moisture to leave will a.ny retard the rate of moisture migration from the uncured THERMOLAC.
The vapor pockets, with the Wy that would result from this, may measurably reduce the density of the product. The topcoat may also bridge over the surface and therefore, the full shrinkage of the product will not be visually observed. The net i
result will be that the minimum required quantity of the THERMO LAG 3301 Subliming Trowel Grade Material will not be present at the joint, and the full extent of fire resistance will not be present at that point of the installation, and prematu failure of the test assembly may result.
It is therefore recommended that hamadiate corrective action ensue action is comprised of reopening the joints, reSiling them following the correct procedures, and anowing the material to completely cure. Perform the -ry build up of THERMO4.AG 3301 Subuming Trowel grade Material to insure that the full thickness is present. ADowing the build up to cure is also====ad=1 Only at that point in time should the topcoat be applied.
D InsufScient Covering of Primary Raceway Elements With THERMO LAG Fire Barrier Whleh Abut Other EnHH== Alea En---i To h Good engineering practice requires when Sre wrapping a primary raceway elemen which interfaces with an adjoining entity, that it be covered in its entirety and to its full extent with the Sre barrier material first. Only when this step is completed is the adjoining entity protected. If this order of installation is not maintained, fire access penetrations may result on the surface of the raceway being prh at the interface between the two entities. This is a result of the consumption of the Are barrier on the " adjoining entit sL. lst raceway, y" which in tura exposes the unprotected segment of the t
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Mr. Richard Casares
~ 3 June 1992 Texas Utilities -
Page5 Figure 2 depicts an interface of a raceway with a structural support. TIrs installers have consistently installed the fire barrier system materials to the structural support
~ first, followed by the installation of the fire barrier system materials to the electrical raceway. As a result, the THERMO LAG 330 Fire Barrier abuts the THERMO LAG 330 Fire Barrier on the structural support. As the THERMO LAG on the structural support is consumed,it will expose the unprotected section of the electrical raceway, to the fire environment. In the case of cable trays, the cables will be directly exposed to the flame environment.
Similarly, in the case of conduits entering junction boxes or condulets, the conduit must be covered with the fire barrier first, followed by the application of the fire barrier to the junction box or condulet. 'Also, the extent of the fire wrap on the conduit is insdequate and should include at least a two inch span of conduit penetrating the junction box or the condulet. Tt7s installers covered only 03" of the conduit beyond its interface with the THERMO-LAG 330 covered junction box and/or condulet. As the fire barrier on the Maedaa box and/or condulet is.
consumed by the fire en4+u==$ it is apt to expose an unprotected conduit segment which is beyond the 03" being covered, and cause an excessive temperature -
at that location. Figures 3 and 4 depict 1his.
Figure 5 depicts the appilcation of the THERMO-LAG 330 to the facsimile of the penetrant through the fire barrier. The same concerns apply. The penetrant shouki be covered for the entire length first.
r E)
Sunnort Svn*== For Test kmhlt= Atese M As previously discussed, each test article must be supported mechanically above deck. That includes the hardware as well as the fire barrier. A photograph depicting a successful attachment psocedure was included with the slide presentation and is also presented in PW,aha 18 and 19.
i CONFICURATION sratmC OBSERVATIONS (Not cos._d in Censal Oh=vetions A)
Pont Bu++=dne af 8 teared O',ns or Tointe Bet
- w. Panela 1
i Post buttering of joints between panel sections is not acceptable. Post buttering of scored sections of a panel, where the stress aldn is left intact comprises a viable i
method of assuring that the full and cured thickness of THERMO LAG 330 is present.
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l Mr. Richard Casares 3 June 1992 Texas Utilities Page 6 l
Since the THERMO-LAG 330 shrinks approximately 25% when trowel applied, multiple applications may be needed to assure that a thickness equal to at least the thickness of the scored panel exists.
1 Topcoating over wet areas is not allowed as it will result in undetected and under design thicknesses in these areas. A more detail diernanian on this subject was presented in an earlier section of this report.
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It was noted that on Scheme 1, Assembly 1 of test article 93543A, an insufficient material thickness was present in the scored areas as shown in Figure 6. Please correct.
It was also noted that some joints were void of any prebuttering. Please correct using appromi procedures.
j It was further noted that the bottom of the horizontal T portion on this tray, constructed of several sections, was abnormally assging. We could not establish whether flat or "V" grooved prefabricated sections were used, and if used, in which direction the V grooves were runningt Also, the gap width between those sections could not be established.
The details of construction of this section must be addressed prior to the test.
The type of prefabricated panel (flat or "V" grooved) installed on Jw bottom of the
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"T" section must be identified. If flat panels were used, they should be removed and replaced with "V" grooved panels. The "V" grooves should run perpendicular te the width of the tray. The two sections must be laced at their interfaces with approved stainless steel tie wire at 2 inch intervals, to avoid separation during the fire exposure as shown in Figure 7.
Or - the entire bottom section must be covered with a complete layer of Stress Skin as follows:
i Apply a 3/16" thickness of wet THERMO. LAG 330-1 Subliming Trowel Grade Material over the entire surface. Allow to dry for approximately 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or overnight, whichever is more convenient.
Follow this by the installation of a complete wrap of stress skin using a 5 inch overlap at the seams, and laced at the seam with approved stainless steel tie wire at 2 inch intervals.
Mr. Richard Casares 3 June 1992 Texas Utilities Page 7,
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This is followed by the installation of stainless steel banding material at a 1
maximum of 12 inch intervals.
The final step is comprised of filling the stress skin mesh with THERMO-LAG 3301 Subliming Tmwel Grade Material (normally 0.060" will suffice),
allowing the material to cure, and then topcoating, if daired.
B)
Upgrade Cable Tray Tat Article Scheme 1 - Amammbly 2 - #935438 "ISI's recommendations were not completely followed. As presently constructed, the test article does not offer the minimum level of upgrade necessary.
TSI's recommendations for upgrading were comprised of details previously submitted to Texas Utilities and which for convenience are incorporated into this report as Appendix A, or Wrapping the entim assembly as presintly constructed with one complete and uninterrupted layer of THERMO-LAG Stress Skin Type 330 69, as follows 1)
All topcasted surfaces should be lightly hand sanded and all dust residue removed.
i 2)
Apply 3/16" thickness of the THERMO-LAG 330-1 Subliming Trowel Grade Matertal over the entire surface of the cable tray and aHow to dry for at least 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.
3)
Starting with the inside sight angle of the cable tray, cut a piece of THERMO.
LAG Stress Sida large enough to circumferentially wrap the width of the cable tray, plus 5 inches, and the desired length plus 2 inches. Form this piece into a right angle.
i 4)
Wrap the stress sida around the cable tray starting at the vertim! leg, overlapping the seam on one side by 5 inches. Wrap the next section of stress skin overlapping the first piece by 2 inches. Tie the two sections of stress skin together at the seams with stainless steel tie wire at 2 inch intervals. The stress alda sections shall be secured to the cable tray with stainless steel banding material, at a maximum of 8 inch intervals.
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Mr. Richard Casares 4 3 June 1992 Texas Utilities Page 8 i
5)
Notch and form the stress skin as requimd prior to installing on the horizontalleg or radius. Install on the cable tray in the same manner as described in item 4 above.
6)
After the able tray has been completely wrapped with the stress skin, and all tie wire and banding material are in place, apply the THERMO LAG 330-1 Subliming Trowel Grade Material over the entire cable tray to i
completely cover the stress skin and fastening materials.
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-l TU's installer employed only incomplete segments of our recommendations, coupled with the unacceptable use of band to band or tie wire to bands or tie wire to wire techniques for obtaining the necessary fire barrier support. The highlights of these are as follows:
a)
THERMO. LAG Stress Skin Type 33049 was used to upgrade the right angle section of this test assembly. The stress skin was formed in a vertical plain so that it overlapped the back and the fmnt of the test article by 5 inches. These
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section of stress sida overlaps were held in place by stretching the tie wire from one 5 inch bend to the othe' r, across the THERMO-LAG Prefabricated Panet l
b)
The bottom 90* intersection of the two THERMO LAG Panels was not upgraded with the THERMO. LAG Strums Sida Type 33049.
i c)
The straight sides of the horizonta! "T' were wrapped with the Stress Skin upgrade, overlapped for 5 inches on the top and bottom of the horizontal "T". The stainless steel tie wire running across the top and bottom of the horizontal T was tied to the stainless steel banding material used to hold the prefabricated panels onto the cable tray.
d)
The tie wires instaBed on the bottom of the structural supports are tied to each other for the purpose of holding the bottom in place.
J l
This procedure will not work. Please review Figures 8 and 9 and Photographs 20 and i
21.
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Mr. Richard Casares 3 June 1992 Texas Utilities papp j
O Use of Flat (No "V" Groove) Sections of THERMO. LAG Prefabricated Panels function Boxes and Condulets The use of flat THERMO-LAG Prefabricated Panels has never been verified by test, and is therefore unacceptable. Please replace the flat sections with "V" grooved sections and employ recommendations for construction contained in Appendix A hereto. The installation detail depicted in Figure 10 has not been previously tested.
)
Q Incompletely Filled foints Between Prefabricated Sections A11 )ints between prefabricated sections should be filled at least to the thickness of the adkining items.
Conduit #93543C, Assembly 1, has pints which are incompletely filled. This repair must be completed prior to the test if valid results are to be obtained. ' See Photograph 22.
i Do not apply over the previously palm surfaces. This surface must be removed and the full gap / pint thickness obtained using correct procedures.
E)
Provision Of A Fillet Chamfer Between Two Adkining Sections Of DissimL r Diameters or Other Dimensions A chamfer fillet c.f THERMO LAG 3301 Sub11 ming Trowel Grade Material must be provided between two ad>tning items of dissimilar dimensions. Figure 11 depicts i
our recommanada= Photographs 23 and 24 shows a typical dstall taken fmm the TU conduit assembly. Sharp discontinuities of this type may produce undesirable j
stress concentration at this pint.
F)
Bending Without Scoring And Under Tension Of Flat THERMO LAG 330 j
Prefabricated Panels To Conform To A Substantial Condulet Curvature Photographs 25 and 26 and Figure 12 depict this design. This design imparts i
substantial stress onto the panel, as the normal scoring provided for that purpose is not present. Upon exposure to the Sre environment,it is expected that the tie wire -
j banding combination will lose adA-lent mechanical properties and cause the panel to spring loose, and in the process open up the surface of the condulet to direct flame 1mpingement.
Mr. Richard Casares 3 June 1992 Texas Utilities Page 10 A
We reconunend that only "V" grooved and properly scored, filled and attached panels be used for this installation. Or as an alternate, a typical boxed configuration can be used.
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- Impew Coverare Of Sollee Plates On Cable Travn Photographs 27 and Figure 13 depict the installation. A panel section is superimposed over an adjoining section of THERMO LAG 330 Prefabricated Panel which abuts the splice plate, and essentially, is intended to provide a cover over the bolts and splice plate. Only a 1/2" overlap is provided by this cover onto the :
adjoining sections.
It is inadequate and could result in a premature failure of this joint. As the primary abutting sections and the cover are exposed to the fire environment, they become progressively consumed due to the fire induced sublimation. This will result in an inadequate base to.upport the cover and cause it to either shift or collapse in the cavity thereby providing for a direct penetration of flame into the exposed cable tray, i
Our reconunendation is that one continuous section of a THERMO LAG 330 prefabricated panel be used to cover the bolts of the splice plate, and the splice plate itself. A minimum 3" overlap can probably do the job as well However, this method has not been tested by TSL 10 Stmetural Support For Conduit The configuration employed for fire protection of structural conduit supports is depicted in Figure 14. This method has not been tested tr/ISL We certainly hope that Texas Utilities will give the items delinested herein consideration and implement syy.ey/. ate corrective action. We're glad to be of service to Texas Utinties. Our personnel are available to assist you in any reasonable manner possible.
Yours truly, i
l Ben E. Evans Manager of Quality Control BEE / meg i
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HELD SERVICE SURVEILLANCE REPORT PHOTOGRAPHS AND HGURES i
LIST OFFHOTOGRAPHS PHOTOGRAPH 1 INSTALLATION OF STAINLESS STEEL TIE WIRE i.
FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICTED SECTION PHOTOGRAPH 2 LOOSELY FITTING STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TE WIRE SUPPORTING A THERMO LAG 330 PREFABRICATED SECTION i
SCHEME 1 - TEST ARTICLE 93543A PHOTOGRAPH 3 INSTALLATION OF STAINLESS STEEL BANDING FASTENED TO STAINLESS STEEL TIE WIRE SUPPORUNG A THERMO-LAG 330 PREFABRICTED SECTION SCHEME 3 -TEST ARTICLE 93543E,
- PHOTOGRAPH 4 LOOSELY FITTING STAINLESS STEEL TM WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORUNG A THERMO LAG 330 PREFABRICATED SEC!10N SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A z
h, SIDE VIEW OFTHE IDOSELY PITI1NG.
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STAINLESS STEEL TIE WIRE "A
ASSEMBLY 1 -TEST ARTICLE 93543C FHO10 GRAPH 6 SIDE VIEW OFDE IDOSELY FITI1NG STAINLESS STEEL TE WIRE ASSEMBLY 1 - TEST ARTICLE 93543C FHOTOCRAPH 7 LOOSELY FITTING STAINLESS STEEL TE WIRE d
e LISTOFPHOTOGRAPHS CONTINUED 3
7 PHOTOGRAPH 8 LOOSELY FITTING STAINLESS STIEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICATED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A
- PHOTOGRAPH 9 INSTALLATION OF STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICTED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A PHOTOGRAPH 10 LOOSELY FITTING STAINLESS SITEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICTED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A LOOSELY FITTING STAINLEEi STEEL TIE WIRE FASTENED TO STAINuiSS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICATED SECTION 9
INSTALLATION OF STAINLESS SITEL TIE WIRE FASTINED TO STAINLESS STEEL TIE WIRE SCHEMI1 - ASSEMBLY 1, TEST ARTICLE 93543A PHOTOGRAPH 13 LOOSELY RTIING STAINLESS STEEL TE WIRE FASTENED TO STAINUISS STEEL TE WIRE SUPPORTING A THERMO LAG 330 PREFABRICATED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A l
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LISTOFPHOTOGRAPHS i
CONTINUED i
PHOTOGRAPH 14 LOOSELY FITTING STANLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICATED SECTION SCHEME 1. ASSEMBLY 2 TEST ARTICLE 935435 PHOTOGRAPH 15 SIDE VIEW OF THE LOOSELY FITTING i
STAINLESS STEEL BANDING MATERIAL ASSEMBLY 1-TEST ARTICLE 93543C t
PHOTOGRAPH 14 STAINLESS STEEL BANDING MATERIAL WHICH MAS SLIPPED STAINLESS STEEL BANDING MATERIAL WHICH HAS SLIPPED PHOTOGRAPH 18 SUPPORTSYSTEM FOR TEST ASSEMBLIES ABOVE DECK PHOTUCRAPH19 -
SUPPORT SYSTEM POR TEST ASSB(BUES D@
CABLE TRAY UFCRADE CABLE TRAY UFCRADE
n LIST OFFHOTOGEAPHS CONTINUED PHOTOGRAPH 22 INCOMPLETELY FILLED JOINT BETWEEN PREFABRICATED SECTIONS PHCTTOGRAPH 23 FILLET CHAMFER BETWEEN TWO ADJOINING SECTIONS OF DISSIMILAR THERMGLAG PREFABRICATED SECTIONS i
PHOTOGRAPH 24 FILLET CHAMFER BETWEEN TWO ADJOINING SECTIONS OF DISSIMILAR THERMOLAG PREFABRICATED SECTIONS
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PHOTOGRAPH 25 I
CONDUIT ASSEMBLY EMPLOYING PRESTRESSED THERMO-LAG PREFABRICATED PANEL AS ITS BASE i
PHOTOGRAPH 26 CONDUIT ASSEMBLY EMPLOYING PRESTRESSED THERMO-LAG PREFABRICATED PANEL AS TIS BASE P
PHOTOGRAPH 27
-i SPUCE PLATE DETAE i
ON CABLE TRAY CLE u
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i J
l PHOTOGRAPHI INSTALLATION OF STAINLESS STEEL TIE WIRE l
l FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICTED SECTION
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J PHOTOCRAPH 2 LOOSELY FITTING STAINLESS STEEL TTE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUP THERMO LAC 330 PREFABRICATED SECTION SCHEME 1 - TEST ARTICLE 93543A j
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PHOTOCRAPH 3 l
INSTALLATION OF STAINLESS STEEL BANDING FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICTED SECTION i
SCHEME 3 - TEST ARTICLE 93543E l
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PHOTOGRAPH 4 LOOSELY FITTING STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO. LAG 330 PREFABRICATED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A j
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PHOTOCRAPH 5 SIDE VIEW CF THE LOOSELY FITUNG STAINLESS STEEL TIE WIRE ASSEMBLY 1 - TEST ARTICLE 93543C
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1 PHOTOCRAPH 6 SIDE VEW OF THE LOOSELY FTITING STAINLESS STEEL TE WIRE ASSEMBLY 1 -TEST ARTICLE 93543C i
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PHOTOGRAPH 7 LOOSELY FITTING STAINLESS STEEL TIE WIRE i
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PHOTOGRAPH 8 LOOSELY FITTING STAINLESS STEEL TTE WIRE t
FASTENED TO STAINLESS sihEL TIE WIRE SLTPORTING A THERMO-LAG 330 PREFABRICATED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93S43A J
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INSTALLATION OF STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A i
l THERMO LAG 330 PREFABRICTED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A t
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t PHOTOCRAPH 10 LOOSELY FITTING STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SLTPORTLNG A THERMO-LAG 330 PREFABRA. icd SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A-f
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PHOTOGRAPH 11
' OOSELY FITUNG STAINI.ESS STEEL TIE WIRE I
TO STAINI.ESS STEEL TIE WIRE SUPPORTING A TJ.'O-LAG 330 PREFABRICATED SECTION a
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l PHOTOCRAPH 13 LOOSELY FITTING STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAC 330 PREFABRICATED SECTION 1
SCHEME 1. ASSEMBLY 1
)
TEST ARTICLE 93543A i
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LOOSELY FITTING STAINLESS STEEL TIE WIRE FASUNED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO. LAG 330 PREFABRICATED SECTION SCHEME 1 - ASSEMBLY 2 TEST ARTICLE 93543B I
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SIDE VIEW OFTHE LOOSELY FITTING STAINLESS STEEL B'ANDING MATERIAL ASSEMBLY 1-TEST ARTICLE 93543C F
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STAINLESS STEEL BANDING MATERIAL WHICH HAS SLIPPED d
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STAINLESS STEEL BANDING MATERIAL 9
4 WHICH HAS SLIPPED l
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j PHOTOCRAPH 18 SUPPORT SWGM FOR TIST ASSEMBLT.S ABOVE DECK i
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PHOTOGRAPH 20 b
CABLE TRAY UFCRADE
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PHOTOGRAPH 21 CABLE TRAY UPGRADE I
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PHOTOGRAPH 22 INCOMPLETELY FII. LED JOINT BETWEEN PREFABRICATED SECTIO 9
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i-L PHOTOCRAPH 23 FILLET CHAMFER BETWEEN TWO ADJOINING SECTIONS OF D5SIMILAR THERMO-LAG PREFABRICATED SECTIONS J
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PHOTOCRAPH 24 FILLET CHAMFER BETWEEN IWO 4
ADJOINING SECTIONS OF DESIMII.AR THERMO-LAG PREFABRICATED SECTIONS a
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PHOTOGRAPH 25 CONDUlT ASSEMBLY EMPLOYING PRESTRESSED THERMO-LAG PREFABRICATED PANEL AS ITS BASE 8
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PHOTOCRAPH 26 CONDUlT ASSEMBLY EMPLOYING PRESTRESSED t
. THERMO-LAG PREFABRICATED PANEL AS ITS BASE r
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e PHOTOGRAPH 27 SPLICE PLATE DETAIL ON CABLE TRAY TEST ARTICLE d
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USTOFMGURES MGURE1 DECK SIDE STRUCTUAL ASSEMBLY FOR CONDUIT TEST ARTICLE MGURE2 INTERFACE BETWEEN AN ELECIRICAL RACEWAY AND A STRUCTURAL SUPPORT MEMBER MGURE3 CONDUIT-CONDULET NTERFACE HGURE4 CONDUIT-JUNCTION BOX INTERFACE MGURE5 PENETRANTS THROUGH THE FIRE BARRIER FIGURE 6 SCORED PANEL SECTION ON CABLE TRAY MGURE7 PREFABRICATED PANEL INSTALLED ON THE BOTTOM OF THE HORIZONTAL T SECTION USING STAINLESS STEEL IIE WIRE - LACING METHOD MGURE8 CABLE TRAY UPGRADE MGURE9 CABLE TRAY UPGRADE
i
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e USTOFMGURES CONTINUED j
MGURE10 JUNCTION BOX t
CONSTRUCTED FROM FLAT PREFABRICARD PANEL SECTIONS MCURE11
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CHAMFERED FILLET AT DISCONTINUmES MGURE u APPUCATION OF FI.AT FREFABluCATED PANEL SECTIONS FOR CONDUITS 1
MGURE D INSTALLATION OF PREFABRICATED PANEIS OVERSPUCE PLAH E
MCURE14 STRUCTURA!. CONDUIT SUPPORTS i
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RECOMMENDED MH1 HOD i
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.E IBe washers essed tosecurebonessepanels of Ironsisten.
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INTERFACE 8E1 WEEN AN ELECTRICAL RACEWAY AND A STRUCTURAL SUITORT MEMBER l
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THERh0CM.AG330 abuse NLAC 330 en the senectural support. As $ne Are
- Ihe 1HERhKMAC appeted to the structasel suppers wie be w i
and in ohne wW espose she sepseessed engenese of the seeswey.
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.y eseerie.o.,, ore are nosteen
,o,,,, e,,,ue,,ey 1, i,.,ted,o
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=ewas emppat-asedas wook ares in the
"'"..a homesaof emppers.
ersy,andelsesnaking ele in the bossesa of eine ersy. gte esosa t
THERheO LAC 330 Bro Servier pseescas the electrical recewey for the entire length se she way to the senscoural support, and peaserates see THastMO-LAC 330 rire Barreer i
coeertog else seppers. There ese me unprotected segmenes of the elecerleel seerway Inherent in shie deelga.
J_
RECOMMENDED METIIOD By covering cable ersy Mrse, botesen panel
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of tray is butted to suppore, then panel on g,gy,
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FICL,. d 3 CONDUtr-CONDUIETINTERFACE I
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'IU ME1 NOD RIiCOMMENDED MEIHOD I
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FIGURE 5 PENhTRANIS THROUGH THE HRE BARRIER 1
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THbEMO. LAC 3SS4de Raul-WInnhet beseessi up se W W wh N.
usraMM.AC 330 Psegelwicated Panels
_ gg RECOMMENDED MH1 HOD
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sho.id be applied over alie liebe by 2". Fasten with bending.
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SCORED PANEL SECTION GN CABLE TRAY l
l TU METHOD I
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i Seese lines en emeskie redoms panels were
^", busessed. After several days, snetariel alwenk due to drytes, esemeleg eencen esene steeg case. Tupmes was added se amene areas nesere eney were :- - -
filled.
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FICURE 7 i
PREFABRICATED PANEL INSTALLED ON THE BOTTOM OFTHE HORIZONTAL 'T"SECTION USING STAINLESS STEEL TIE WIRE - LACING METHOD i
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n-Semens en Basessm et Trey - Use full penets whenever possible ne lhnas misember of seams.
Due es else end unessessi shape, senes shenkt be beemd week ele whe.
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..o FIGURE 8 CABLE TRAY UPCRADE TOP VIEW f"
11 Sidepp%sopandbeoen paswis anaking IIe seesa on bottoen of test article
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C.3 Hortaonent tg StraigM Ran Only.TSecelon Enctialed)
N,c-p -- bF A Istr asnonne of wet THERMO4.AC 3.41 "- t "
' ;Tsowel -
i T gy ygg reneersegen Seal Made Of g i" Crede Maesstal esse oppfled to alw esp and eMe. 'Ilie bassons yTHaltM(H.AC3364
" 4."
panel had very Neele Tsewel Crede applieil. Scress Shin wi SuMendagTsewelCsede odems and inesened week ele wise to endoseng bands.
THERMO4.AC 3381 Seelhadag Trowel Grade Masertel'was I
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FIGURE 9 CABLE TRAY UPGRADE T
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a N 8PSeade was M SIDE VIEW l
en radius secolon or verth:alleg above radius.
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BACK VIElf h SMn was folded on edges to added to
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' S,;8 8"PPort for ineessing with sie wire.
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DACK VIEW
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- ;Teowei Crade was A fair=====a=a of wet THEM 330-1 E-_ i" appu.a i..hs a.d - --
- s a a f and h ek pa es. u-.haped c
e..u.we added. n anno e.e ded w d.ida and s f
a i,.ca penets. Brachet covers at right angle secolon were minde of separate pieces of Seseos SMm. Dese pieces cover else bracket cover,entending 5"on bossom
?
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penet. De Stress Skin was fastened to escli ether with ele wise, whh 6-x x
._,,, xX YA xM spacing. Wee THENI.AC 3301 Sublisaing Trowel Grade was added so N
x x x
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e
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J FIGURE 10 i
JUNCTION BOX CONSTRUCTED FROM FLAT PREFABRICATED PANEL SECTIONS of y
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L Moesnting Bracket For Bands N so lloid ce,ers so Top. Tie
' -~^ '
Jeanction Bos
- used to W coms on sMe.
p o
o Small pieces of Prefabricated Panel
-E 9
h FIGURE 11 CHAMFERED RLIET AT DISCONUNUMES TU METHOD e
=
l JUNCDON BOX CONDULET RECOMMENDED METHOD t
3 Ek sesL NW Mw
f FIGURE 12 t
APPUCATION OF FLAT PREFABRICATED PANEL SECDONS i
POR CONDURS i
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.,poetsen panel forened to se commonseof Condulee creasing a
- End cope en esse arende evader botessa peneL consonne sesens poema.Nband asei d=las re.ihemen.
a of she baseoan pomel could caanse this area to open.
L
FICURE 13
~ ;
i INSTALLATION OF PREFABRICATED PANELS OVER SPLICE PLATE
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E
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- Top and boteo peneis are cut to stae of tray phes thickness of side panels, 3
' y bue m su.w.nce =es made ser b. sis
- - - c, boca.es s.,esbie er.ys.
Side peasis beve se stop as iluse locneisam, csemelag more seems in the ceasesuction.
L-A sense peasis is added to cover bolts, with 1/2" evedsp on sede pesces.
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asads used so sessen be.ci.e cosm.
Top and bottom penets should be cue wkle eno"Sh to allow ser size of tray at widest point, which 3
lachedes bracket bolts, plus the shackness of side pomets. This wlIl allow see a mioee continuous run of side panels with less eems.
., ' 4 l
~ FIGURE 14 STRUCTURAL CONDUIT SUPPORE TU MEMOD
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f TIG Wirt
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Tlt Wirt used ID hold places 1
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I Support systems on these test articles were ins bedese 15rs quality consoi personnel wm inw lafonnsdom is Endeed.
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APPENDIXA TO HELD SERVICE SURVEILLANCE REPORT i
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TSITECHNICAL NOTE 50192 DETALLATIONFROCEDURES MANUAL POR OFINTOP LADDER BACK CABLETRAYS AND STEELCONDUITS e
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DATEOFI55UE:
1MAY1992 DATE REVISEI>.
7 MAY1992 l
THERMAL SCENCE. INC.
- 2200 CASSENs 02.
- ST. LOUIS. MO 63024 * (314) 3491233 Telen: 209901 (Answerbock: T31 UR)
- Telecooier (314) 3491207
g.
r TSITECHNICALNOTE 50192 Y
INSTALLATION FROCEDURES MANUAL l
1 POROFENTOFLADDERBACKCABLETRAYS AND STEELCONDUITS l
1 1
I In no event shall Thennal 5denes, Inc. be responsible to anyone for whatever use or nonuse is made of the todennation =w herein, and in no event shall Thermal M
- Inc., its employees, or its agents locur any obligation or liab0ity for damages fadad85 but not Ihnited to, E
- :q H=8 damages, arising out of or in connection with the use, or inabGity to use, the infonnation contained herein.
i
TSITECHNICAL NOTE 50192 TABLE OFCONTENTS SECITONI THERMO-LAG 330 PRUABRICATED FANEL READY ACCESS -
Box DEstCN FOR CABLETRAYS i
Tirut ZAGIRE2 10 INSTALLATIONOFTHE ONE ORTHREE HOUR 1
THERMO-LAG 330 FREFABRICATED FANILD READY ACCESS BOX DESIGN FOR CABG TRAYS SECTION2 THFEMO. LAC 310 PRMMAFED CONDUrr RWr"rf0M DEffCN l
10 THERMO I.AG FRESHAFED CONDUlT SECTION 13 i
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7 TSITECHNICAL NOTE 50192 INSTALLATION FROCEDURES MANUAL FOR OPENTOF LADDER BACKCABLETRAYS AND STEEL CONDUlTS i
SECTION1 THERMO-LAG 330 PREFABRICATED FANEL READY ACCESS BOY DESIGN FOR CABLETRAYS Installation of the THERMO LAG 330 Pr,efabricated Panel Ready Access Design to open top, ladder back cable trays involves cutting the amnbar sections required to form the fire barrier from one or three hour THERMO LAG 330 Pndabricated Panels, forming the fire banier sections, and then -*: the sections on tise open top, ladder back cable tray to be protected using maclah fastening techniques delineated in the sections which foDow.
Ir=*=Ilm*Ia= Of he One er Three HourTHERMO-LAG 330 Frafabricated Fanel n..a,A,,
m-n s pare o-Ten The forming of the fire barrier sections is acemnplished using one of several methods. Three Q) or four (4) sided one (D piece
- are formed by cutting or scoring, as spa-8 In the case of one hour Sre barrier panels, the scoring is done along the lines where bands are to be made and then maldag the required 90' bands.
In the case of the three hour fire barrier panel, T grooves are cut along the lines where bands are to be made and than the required 90* bends are made. The sections t
i are then completed by hetening the sides together and fEling in the scored or "V" cut comers with the THERMO LAG 3304 Subliming Trowel Grade Material i
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In the other alternative method, Individual top, bottom and side pieces are cut from 1
the one or three hour Sra barrier prefabricated panel, and are then fastened togethe The seams and joints of the section are then filled with the THERMO LAG 330-1 Subliming Trowel Grade Material, and as appropriate, structurally. enhanced by i stainless steel tie wire, stainless steel banding material and/or THERMO LAG Stress Skin Type 330-69.
Approved mechankal fastening materials to be used for the installation of the THERMO LAG 330 Prefabricated Panels are:
Stainless Steel T1e Wire 0.032 Minimum Stainless Steel Banding Material 03* x 0.020" Minimum The sequential steps involved in instaning these are barrier designs are decribed in the following paragraphs:
1.0 Installation Of The One er Three Hour THERMO-LAG 330 WAS.h e N.1m:cAc=a-E-%Farf*=W t__
1 1.1 Cut a section large enough to form the bottom section from a one or three hour are barrier THERMO. LAG Prefabricated Panel The width of the bottomi section shall be equal to the sen of the base and both flanges, plus both side of the cable tray. The length of the bottom section shan not aceed 6.5 feet, since longer sections are unwisidy and more dmnh to install 1.2 For a one hour design, form a rectangular shaped bottom section by scoring the THERMO-LAG 330 Prefabricated Panel along the bend line, and then making two CD 90' bends which provide for the side panels. Maka sure that a continuous layer of THERMO. LAG Strese Skin Type 330 69 is present on the inside, and the score line is completely 80ed with the THERMO-LAG 330-1 Subliming Trowel Grade Material 2
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1.2.1 The dry thickness of the THERMO-I.AC 330-1 Subiming Trowel Grade Material must be equal to the thicimens of the panel, and meet the minimum thickness criteria of 0.625" t 0.125". The THERMO-I.AC 3301 Subliming Trowel Grade Material may shrink up to 255. Multiple applications may be required to insure proper dry fum thickness.
The THERMO 1.AC 330-1 Subliming Tmwel Grade Material is deemed to be cured when the moisture content does not exceed 20 as measured by'a mositure meter such as a Delrsorst Moisture Meter, Model DP, or a -
minimum of 30 days have elapsed following the completion of the application, at a minimum ambient temperature of SPF.
1.3 In the case of the three hour fire barrier design, make sure that a continuous layer of THERMOI.AG Stress Sida Type 330-69 is present on the outside.
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This is accomplished by the foDowing:
i 1.3.1 On the side c' the h barrier facing the cable tray, miter a 4P "V" cut through the pa*s, leaving the outer laIyer of stress in intact. This 4P "V" cut in along the predetermined band lines.
1.3.2 Fill the scored "Y" cut with the THERMO 1.AG 330-1 Subliming Trowel Grade Material The dry thicimens of the THERMO I.AG 3301 Subliming Trowel Grade Material must be equal to the thicknamn of the panel, and meet the ndahnn== thicleans cdteria of 1.250"
- 0.250". The THERMO-I.AC 330-1 Subliming Trowel Grade Material may shrink up to 255.
Multiple applications may be required to insure proper dry film thielenaan-The THERMO LAG 33019%N Trowel Grade Material is deemed to be cured when the moisture content does not exceed 20 as measured by a mositure meter such as a Delmhorst Moisture Meter, Model DP, or a ndal=um of 30 days have elapsed following the completion of the application, at a adnimum ambient temperature of 5FF.
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1.3.3 Bend the panel along the "V" cut line.
Mount the rectangular shaped bottom section on the cable tray us 1.4 steel banding material The recommended maximum spacing between b is 8 inches.
4 1.5 Cut a section large enough to form the top section of the cable tray from a or three hour fire barrier THERMO LAG 330 Prefabricated Pane of the top section shan be equal to the base, plus both Bange of t!w the thickness of each of the two (2) side of the bottom rectangular section.
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1.6 Attach the flat top section to the instaHed bottom section using stainless steel banding material at a maximum recommended spacing of 8 inch intervals, and 8 laches from the stainless steel bands placed on the cable tray, a 1.2 and L3 above.
17 Attach aMitional top and bottom sections to previously instaHed section "prebuttering" completely the adjoining ends with a suitable quantity of the
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TIERMO LAG 330-1 Subliming Trowel Grade Material so that when the panels are joined together, the excess trowel grade material forms a i
continuous product seal completely covering the Joint. The THERMO LAG 330-1 Subliming Trowel Grade Material may shrink up to 255. Multiple~
applications may be seguired to insure proper dry fRm thickness.
The TIERMO LAG 3301 Subliming Trowel Grade Material is deemed to be cured when the moisture content does not exceed 20 as measured by a i
mesiture meter such as a Delmhorst Motsture Meter, Model DP, or a mialmum of 30 days have elapsed following the completion of the application, at a minimum ambient temperature of 50'F.
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1.8 The following sequential steps shall be used when butt joining individuals sections of Prefabricated Panels where the pp width is in excess of 0.030 inche:
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1.8.1 The measurement of the width of a gap or seem between adjoining sections of THERMO-LAG 330 Prefabricated Panels should be performed and prior to their prebuttering with the THERMO LAG 330-1 Subliming Trowel Grade-Material The presence of the THERMO-LAG 3301 Subliming Trowel Grade Material in the pp or seam could impact the accuracy of the measurement.
l The adjoining sections of panel should be in intimate contact with each other.
While banding, tie wire or other mechanical fastening materials may be used for support, any tensioning tightening of the banding or tie wire, etc., in the proximity of the pp wiH impact the accuracy of the measurement, and is not Permitted.
IJ.2 Cut a piece of THERMO. LAG Stress Skin Type 33049 large enough to form a complete circumferential wrap centered over the adjoining sections of the Prefabricated Panel, allowing a 5" minimum circumferential overlap. The width of this section shall be a adnimum of 10 inches. The length of this
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section shaR be equal to the sum of the base, top, both sides, plus 5 inches to allow for the required overlap. The exposed edy of the overlap should be secured using stainless steel tie wires at 2 lad intervals.
1.8.3 MH in aay gaps or joints completely with the THERMO LAG 3301 Subliming Trowel Grade Material The THERMO LAG 3301 Subliming Trowel Grade Material may shrink up to 25L Multiple applications may be required to insure proper dry Sim thickness.
The THERMO LAG 3301 Subliming Trowel Grade Material is deemed to be cured when the moisture content does not mesed 20 as measured by a masiture meter such as a Dehnhorst Moisture Meter, Model DP, or a i
minimum of 30 days have elapsed ionowing the completion of the application, at a minimum ambient temperature of 50'F.
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1.8.4 - Securely wrap the butt joining stress skin section, prep over the joint formed by the two adjacent Prefabricated P sure that there is at least a 5 inch stress skin coverag Prefabricated Panel sections in the radial direction an circumferential direction.
1.8.5 Fasten the butt joining stress skin section on each ind Prefabricated Panet wa= using stainless steel banding mate should be placed at an approximate distance of 2 inches fro joint being covered. The exposed edge of the overlap sh stainless steel tie wires at 2 inch intervals.
1.8.6 Complete the instaBation of the butt joining stress skin sec a minimum thickness of 0.060" of the THERMOLAG 330-1 Su Trowel Grade Material onto the circumferential stress skin wrap forcing the material into the mesh to form a homogeneous p i
covering. The THERMO-LAG 330-1 Subliming Trowel Grade M shrink up to 25E Multiple applications may be required to ins film thickness.
The THERMO LAG 33S4 Subliming Trowel Grade Material is deem cured when the moisture content does not exceed 20 as measu mositure meter such as a Dehnhorst Moisture Mater, Model DP, or a minimum of 30 days have elapsed following the completion of the appilcation, at a adalemm ambient temperature of 507.
L 1.8.7 Alternately, as an aid in securing the structural Integrity of the jo 0.030" in width, employ stainless steel tie wires. The tie wires should be secured using the inner layer of the stress sida as a base. In the case of longitudinal joints, the tie wires should be spaced no more than 4 inc apart. In the case of joints spanning the width or the height of the Ma "re the distances between the tie wires should not aceed 2 fa should fit tightly against the surface of the material and employ at lea twista.
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os Cut individual sections, having butted edges, large enough 1.9 haas sides, and top section from a THERMO LAG 330 Pmfabric i
e anel.
1.10 Mount the bottom and side sections on the cable tray using sta banding material The recommended maximum spedng between not exceed 8 inches. Prebutter the adjoining ends of the panels with a quantity of the THERMO LAG 3301 Subliming Trowel Grade Material when the panels are joined together, the excess of the trowel gradj forms a continuous band completely covering the joint. The THERM 3301 Subliming Trowel Grade Material may shrink up to 25%.
applications may be required to insure proper dry 81m thich====
The THERMO. LAG 3301 Subliming Trowel Grade Material is deemed cured when the mote 4 content does not exceed 20 as measured bj moniture meter such as a Delmhorst Moisture Meter, Model DP, or a minimum of 30 days have elapsed following the ' completion :of the application, at a minh=== ambient temperature of $0*F.
1.11 Attach the flat top section to the laat=Had bottom section using stainless banding material at a==whn== recommended spacing of 8 lach interv and 8 laches from the==ial== steel bands placed on the cable tray above. Prebutter the adjoining ends of the panels with a suitable qu the THBtMO LAG 3301 Subihming Trowel Grade uneareal so that when t panels are joined together, the excess of the trowel gende material forms a continuous bend counplately covering the joint. The THERMO-LAG 3301 Subliming Trowel Grade Material may shrink up to' 255.Multiple applications may be required to insure proper dry 81m thicknana-The THEtMO-LAG 3361 Subliming Trowel Grade Material is deemed to be cured when the moisture content does not exceed 20 as measured by a moeiture meter such as a Delmhorst Moisture Meter, Model DP, or a minimum of 30 days have elapsed following the completion of the application, at a adnknen ambient temperature of 50*F.
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l ne following sequential steps shall be used when butt joining individu L12 sections of Prefabricated Panels when the gap width exceeds 0.030 inches:
1.12.1 Cut piece of THERMO LAG Stress Skin Type 330-69 large enough complete cig.
el wrap centered over the adjoining sect ons of the Prefabricated Panel, aDowing a 5" minimum circumferential overl{
width of this section shall be a minimum of 10 inches. The length of thI section shan be equal to the sum of the base, top, both sides, plus 5 inches allow for the required overlap. The exposed edge of the overlap should secured using stainless sesel tie wires at 2 inch intervals.
1 L12.2 F1111a any gaps or joints completely with the THERMO-LAG 3301 Trowel Grade Material ne THERMO. LAG 330-1 Subliming Trowel Grade Material may shrink up to 25E Multiple applications may be required to 3
insure proper dry film thickness.
The THERMO LAG 3301 WWag Trowel Grade Material is deemed to be cured when the moisture content does not exceed 20 as measured by a moeiture meter such as a Delmhorst Moisture Meter, Model DP, or a i
minimum of 30 days have elapsed following the completion of the application, at a minh=== ambient temperature of 50*F.
l 1.12.3 Securely wrap the butt joining stress skin section, prepared in 1.12.1 above, over the joint formed by the two adjacent Prefabricated Panel sections. Make j
sure that there is at least a 5 inch stress skin coverage on each of the adjo Prefabricated Panel sections in the radial direction and a 5 inch overlap in circumfunuptial direction. The exposed edge of the overlap should be secured using senhda== sesel tie wires at 2 inch intervals.
1.12.4 Fasten the butt joining stress skin section on each individual adjoining Prefabricated panel section using stainless steel banding material The bands should be placed at an approdmate distance of 2 inches from the edge of the joint being covered. De exposed edge of the overlap should be secured using stainless steel tie whos at 2 inch latervals.
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1.12.5 Continue the installadon of the butt joining stress skin sections by filling in the edges, joints, gsps, etc. with the THERMO.I.AG 3301 Subliming Trowel Grade Material lhe THERMO 1.AG 3301 Subliming Trowel Grade Material may shrink up to 25%. Multiple applications _may be required to insure Proper dry Alm thickness.
t The THERMO I.AG 330-1 *a98=5 Trowel Grade Material is deemed to be cured when the moisture content does not exceed 20 as measured by 'a moeiture meter such as a Delmhorst Moisture Meter, Model DP, or a minimum of 30 days, have elapsed following the completion of the application, at a minknum ambient temperature of 50*F.
1.12.6 Complete the installation of the butt joining stress alda sections by troweling in a minimum of 0.060" of the THERMO4AC 3301 Subliming Trowel Grade Material onto the circunferential stress skin wrap, while forcing the material into the mesh to form a homogeneous penetrating covering. The THERMO-l 1.AG 3301 Subliming Trowel Grade Material may shrink up to 25%. Multiple applications may be required to insure proper dry Shn thickness.
t The THERMOI.AG 3301 Subthning Trowel Grade Material is deemed to be l
cured when the moisture content does not exceed 20 as measured by a moeiture meter such as a Dehnhorst Moisture Meter, Model DP, or a minimum of 30 days have elapsed following the completion of the application, at a mine=== ambient temperature of 50'F.
1.13 Alternately, as an aid in securing.the structural lategrity of the joint exceeding l
0.030" in width, employ =*= lata== steel tie wires. The tie wires should be secured using the inner layer of the stress sida as a base. In the case of laaPM seams, the tie wires should be spaced no more than 4 inches apart. In the case of sesas spanning the width or the height of the enclosure, the distances between the tie wires should not exceed 2 inches. The tie wires shouki at tightly against the surface of the material and employ at least 6 twista.
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g Cut imiividual secdons having butted edge large enough to form the bottom, 1.14 sides, and top secdon from a one hour Are border Prefabricated Panet The bottom and top secdons should be equal in width to the width of the cable
.l tray plus the thickness of the side secdon.
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1.15 Mount the W; top and side sections on the cable tray using stainless steel banding material The recommended maximum spacing between bands shan not exceed 6 inches. Prebuw: the adjoining ends of the panels with a suitable quandty of the THERMO LAG 3301 Subliming Trowel Grade Material so that when the panels are joined together, the excess.of the trowel grade material forms a continuous bend completely covering the joint. The THERMO-LAG j
330-1 Sub11 ming Trowel Grade Material may shrink up to 25E Multiple applications may be required to insure proper dry Him tinckness.
The THhRMO. LAG 3301 Subliming Trowel Grade Matadalis deemed to be cured when ths moisture co'ntent does not exceed 20 as measured by a
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mositure meter such as a Dehnhorst Moisture Mater, Model DP, or a minimum of 30 days have elapsed following the completion of the application, at a minimum ambient temperature of 50*F.
I 1.16 The following sequential steps shan be used when butt joining individual sections of Prefabrkated Pansis when the gap width exceeds 0.030 inches:
4 1.16.1 Cut pieces of 'nERMO.I.AG Stress Sida Type 330 69 large enough to form a complete circumferential wrap centered over the adjoining secdons of the Prefabricated Panel, aBowing a 5" maahnam circumferential overlap. The i
width of this section shall be a mininum of 10 laches. The length of this section shaR be equal to the sen of the base, top, both sides, plus 5 inches to aBow for the required overlap. The exposed edge of the overlap should be secured using statalens steel tie wires at 2 inch latervals.
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F 1.16.2 Fill in any gaps or joints completely with the THERMO LAG 3301 Subliming e
Trowel Gade Material The THERMO LAG 330-1 Subliming Trowel Grade Material may shrink up to 25%. Multiple applications may be required to -
insure proper dry Shn thicimess.
i The THERMO-LAG 3301 Subliming Trowel Grade Material is deemed to be cured when the moisture content does not exceed 20 as measured by a mositure meter such as a Delmhorst Moisture Meter, Model DP, or a minimum of 30 days have elapsed following the completion of the application, at a mtalmum ambient temperstme of 50*F.
1.16.3 Securely wrap the butt joining stress skin section, prepared in 1.16.1 above, over the joint formed by the two adjacent Prefabricated Panel sections. Make sure that there is at least a 5 inch stress sida coverage on each of the adjoining Prefabricated Panet aardaan in the radial direction and a 5 inch overlap in the circumferential direction. The exposed edge of the overlap should be secured using stainless steel tie wires at 2 inch intervals 1.16.4 Fasten the butt joining stress skin section on each individual adjoining I
Prefabricated Panel section using stainless steel banding material The bands should be placed at an syy. A. ate menare of 2 laches from the edge of the joint being covered. The exposed edge of the overlap should be secured using stainless stosi tie wires at 2 lack latervals.
1.16.5 Continue the instaBation of the butt joining stress sida secekms by filling in the edges, joints, gaps, etc. with the DERMD4.AG 3301 Subliming Trowel Grade MaturinL The THERMO LAG 330-1 Subihming Tmwel Grade Material may shdnk up to 255. Multiple applications may be z.q.11.4 to insure proper dry 81m Meknama The THERMO LAG 3301 Subliming Trowel Grade Material is deemed to be i
cured when the moisture content does not exceed 20 as measured by a masiture meter such as a Delmhorst Moisture Meter, Model DP, or a minimum of 30 days have elapsed following the completion of the application, at a minimum ambient temperature of 50*F.
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1.16.6 Complete the installation of the butt joining stress sida sections by troweling in a minimum of 0.060" of the THERMGLAG 3301 Subliming Trowel Grade Material onto the drcumferential stress sidn wrap, while fordng the material into the mesh to form a b -:,a penetrating covering. The THERMO-LAG 330-1 Subihning Trowel Grade Material may shrink up to 25%. Multiple applications may be requhid to insure proper dry film thickness.
The THERM 4 LAG 330-1 Subthning Trowel Grade Material is deemed to be cured when the moisture content does not exceed 20 as measured by a moeiture meter such as a Dehnhorst Moisture Meter, Model DP, or a minimum of 30 days have elapsed following the completion of the application, at a minimum ambient temperature of 50*F.
1.17 Alternately, as an aid in secming the structural integrity of the joint exceeding 0.0' 30" in width, employ stainless steel tie wires. The tie wires should be secured using the inner layer of the stress skin as a base. In the case of longitudinal seams, the tie wires should be spaced no more than 4 inches apart. In the case of seams spanning the width or the height of the enclosure, the distances between the tie wires should not aceed 2 inches. The tie wires should St tightly against the surface of the material and employ at least 6 twista.
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TSITECHNICALNOTE30192 SECTION2 TNF1tMcLLAf: TM PRW4MAPED CONDUrr m nuijj}ggg[
The THERMO LAC 330 Prashaped Conduit Section Design is comprised ofi mounting the preshaped==ren on the conduit to be protected using -ka=ical fastening technkgues inchaded in the sections which fouows.
Approved mechanical Asstening materials to be used for the installation of the THERMO LAG 330 Preshaped Conduit Sections are:
Stahdess Steet tie Wire 0.032 Mininunn Stainless Steel Banding Matettal 03" x 0.020" Mini====
la THERMO4.AC FRESHAFED CONDUIT SECTION DESIGN.
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Installation of the Preshaped Conduit Section Design to small diameter conduits involves mounting two of the one or three hour are barrier send +d e preshaped conduit==r*== st a thne, and then instening them together with stainless steel tie I
wire or stainless steel bending matorist t
i The precoating o6 the edges of sections prior to instaustion and the fuling in ofi gaps at the seams or jotals of the assendded sections is acconspushed by using the THERMO LAG 3304 Subundag Trowel Grade Material, and as appropriate, structurauy enhanced by stainians steel tie wire, stainless sesel banding material, and THERMO-LAG Stress Skin Type 33H9.
The sequannial steps involved in instauing tids are barrier design are described in the folk Q paragrapha.
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fa*""'= a' ** oaa ae n= r+ h Barri- %
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Probutter the edges on both sections of_the one THERM 4 LAG Prashaped Conduit Seedons w re raced j
3304 Sublindag Trowel Grade Material, so that w
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butted together, the excess trowel grade materia on u ts are product seal completely covering the joint.
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Subliming Trowel Grade Materlat may shrink up {
applications may be required to insure proper dry Shn th Multiple The THERMO. LAG 33015abihning Trowel Grade Ma cured when the moisture content does not med to be
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moalture meter such as a Dehnhorst Moisture Meter, ya
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minimum of 30 days have elapsed following the co
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appilcation, at a = san==a ambient temperature of 504.
e 1.1.2 Mount the p.4_
.a sections on the conduit with the edge Bush each other to fann a cyttadricai section around the c with sections together using =*=latama steel tie wires or st wo then apply 8"g ' gmaterial no more than 2 lache ng e,
1.1.3 Attach additional sections to those previously installed "p.A.:."
- g" completely aR joining enda with a suitable quan ons by TFnWE 3301 Sublindag Trowel Grade Matadal so tha y of the conduits are butted together, the encess trowel grad en the continuous product seat completely covering the joint 330-1 Subthming Trowel Grade Material may shrink up appilcations may be required to insure proper dry Shn tidek
. Multiple The Tyn% LAG 3301 Subihning Trowel Grade Matada cured when the moisture content does not exceed o be mootture meter such as a Dehnhorst Motsture Meter, M minimum of 30 days have elapsed following the compl application, at a =' ^ + ambient temperature of 507.
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