ML20045D345

Discusses Util Review of 920603 Ltr Outlining Thermal Science,Inc Field Surveillance of Application of Thermo-Lag 330 Fire Barrier Sys on Util Test Assemblies at Omega Poing Labs.Supporting Documentation Encl

ML20045D345
Person / Time
Site:	Comanche Peak
Issue date:	06/16/1992
From:	Terry C TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	Evans B THERMAL SCIENCE, INC.
References
NUDOCS 9306280258
Download: ML20045D345 (87)

Text

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• m ir CPSES 9219364 June 16,1992 Mr. Ben Evans Thermal Science, Inc.

3300 Cassens Drive St. Louis,MO 88026

Dear Mr. Evans:

i Thermal Science. Inc (TSD Seld surveillance of the applicat THERMO. LAG 330 Fire Barrier Systems on TU Electric test assemblies at Omega Point Laboratories and performed an evaluation of apch _

p observation. Most of the observations pertaining to the test assemblies '

(Technical Note 20684, Revision V) and therefore not repres installed Thermo Lar Observations pertaining to construction anomalies coatistent with the a ave mentioned TSI guidance were either addressed in l process by our personnel at the laboratory or will be reviewed prior to the testing and corrected if necessary. -

The purpose of our testing at Omega Point Laboratories is to conArm the performance of the Thermo-Lag Fire Barrier System installed at Comanche Peak Steam Electric Statica(CPSES). We have therefore utilized TU Electric Quality Control personnel, CPSES stock materials, and installation -

techniques representative of the installation at CPSES. Our application of Thermo Lag is consistent with previous TSI guidance including on site -

training by TSI personnel and applicable CPSES design documents and procedures.

These Electric to: tests will provide comprehensive test documentation to enable TU. -

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Qualify existing CPSES configurations as installed;-

2.

Identify evaluation; those conHgurations that require upgrade for further 3.

Provide data to support further analysis if required. ( -

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n nfennce to our upgraded Cable Tray Test Assembly, our incorporation if new TSI recommandations has been based upon review of the recently eceived guidanos and consideration of the practicality of rework of the as.

natalled Thermo. lag at CPSES.

We appreciate TSTs desire to incorporato recently developed installation techniques to assure positive test results. However, this direction is not

ensistent with the intent of our testing pmgram, nor our purpon for TSra review of our test assemblies because it will not clearly demonstrate quali5 cation of the installed Thermo Lag Should you have any questions concerning this response, please contact Mr. JefTShapelow at 817/897 6881.

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\ q C. L. Terry E01 i CLT/ser cc: J. W. Muffett C39 l

. C. W. Ran C07

- T. E. Redican C07A J. 8. Shapetew Co7A CCS ED6 i

A n et 2 e-  :.s, AUG.19 '92 15:05 **"*"f,5

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3 June 1992 TU Electric Comanche Peak Steam Electnc Station Farm to Market Road 56 5 Miles Glen Rose, Northwest TX 760431002 of Glen Rose Attention:

Mr. Richard Cnares Station C07A - Comanche Peak

Subject:

Field Servke Surveillance Report TU - THERMO LAG Installation - Omega Point L b Derr Mr. Casares: a oratories The following report will provide Texas Util!ti Materials to specfic test ardcles -

G 330 Fire Barrier at Omega System Point l Lb a oratories. This report was Control to onsite enclosed figures and photographs.

Texas Utilities' rts issued by T51's Quality Field PersonneLcom and is further supplemented by the the THERMO-1.AG 330 Fire Barrier SystAfter1lcarefull ,

arncles,that:

concluded including the " upgrade em test

, Materials ardcle" at Oto the Taxu Utilldes t mega Point Laboratories, we have 1)

None of the fire barrier designs installed by Peak S l Utilities have been tested as ea ay scomplete for Texas " system" b Th Science, Inc. While some elements ermal of the installatiI ,

tested, the overall installed " designs" hav on have been

2) opinion, these comprise "non tested" ons.

design configuratie n All of the test articles have s of construction sufficient concern one hour fire resistive scapability protec*d ems being e the required to the electric The above addresses only the construction conce Omega Point, and is not intended to reflect on th l 330 Fire Barrier System installation us.

e condition at yourof the facilitirns THERMO-LAG present in the tes i

es, which has not been inspected by THEtMAL SCIENCE. INC,

• 220G CASSENS Ot Toler: .

• ST. LOUls. MC 209901 (Amworkct T5I Ut)

• Telecop. e (314) 349120763026 * (314) 349

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Mr. Richard Casares ,

Texas Utilities 3 June 1992 Page2 nerma1 Science is only the manufacturer and supplier of THERMO LAC 330 Fire -

Barrier System Materials. It is not an architectural or engmeerin5 consultng ent It subcuts its recommendations in reliance that these will be reviewed by Texas Ut:11:2es architects and engmeers pnor to use.

I' cognizant engineer in charge at Omega Point. As of th

, kcorrective action haa not commenced.

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We strongly urge your careful review of this summary report, and insure that the essential corrective action commences prior to the test. In our opinion. in the

'N, that THERMO LAG 330 Fire Barrier Systan can provide. abs You certainly can count of TST's support when requested.-

Our observations are presented in two categories. These are

• GENERAL OBSERVAkIONS

• CONFIGURATION SPECIFIC OBSERVATIONS - '

The general observations are common to nearly all test articles, and are therefore genene. De specific observations apply to test articles as delineated herein.

CENERAL OBSERVATIONS A. Improper Use of Stainless Steel Banding Material and Tie Wire Which ContA Result in An Early Test Termination and Failure This perhaps is_one of the most serious concerns, since it wu extensively used and effects all of the test articles.

It was observed and reported to TU personnel that bands and/or tie wires were impicgiy used as primary load carrying members for other tie wires and bands to support entire sections of prefabricated-THERMO LAG components. '

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Texas Utuities 3I""' E Page 3 The bands and/or tie wires were never intended to perform the double duty of providing for the mechanical attachment of the prefabricat.ed 1HERMOLAG sections' to the test raceway, and also acting simultaneously as primary load carrymg -

members for other tie wire and/or bands which support sizeable uctions of THERMGLAG.

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 carrying capabuity. This may most likely cause and allow, at that time, affected prefabricated THERMGLAG 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.

Further accentuating the concern is the fact that a multiplicity of sman wire segments were used. In some cases they were placed by knotting them together, resulting in an assembly whkh is neither tight as good practice dictates.

In some instances, the tie wires seem to free float in the air.

i Figure 1 depicts a special case here the structural conduit support assembly telles q

exclusively on the abi!Ity of a singular stainless steel band to perform the double o function of supporting the THEMRGLAG 330 segment to the assembly and.

simultaneously the bottom segment via tie wires attached to it. - This clearly wul 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. ]

i B) Loosely Fittine Bands'or tie Wires Some bands or tie wires were not suffkfently tightened during installation. These should be replaced. Photographs 16 and 17 are preented as an example.

O Premature Topeasting of Wet and Uncured THERMGLAG 330 Sublimine Trowel Crade MateMal  !

It is the required practice to fill in all joints completely with THERMGLAG 330-1:

Sub11 ming Trowel Grade Material .It is also essential that these joints be completely j cured in order to provide for a continuous uninterrt pted 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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This is accomplished by generously prebuttering joints fint, immediately prior (Y, .

assembly. Fouowing this prebuttering, the materialis allowed to cure. The Y THERMO LAC 3301 Subuming Trowel Grade Material shrinks about 25%,

therefore, one or multiple additional applications of the product may be requurd -

assure that the full thickness is present. It takes approximately 30 days foI to take place. .

1 Topcoatingwdl entrapment can be performed only afte the material has completely cured. Water

[s the fire exposure. produce different results in the performance of the product dunn

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It was noticed that the topcoat was appued, almost without ext ption, on th Trowelcompletion after of the initial installation of the THERMO LAC 330-1 Subum Grade Matcrial.

The appucation of the topcoat prior to allowing for all moisture to leave will  !

i substantially retard the rate of moisture migration from the uncured THERMO-LA The vapor pockets, with the porosity that would result from this, may m reduce the density of the product . The topcoat may aho bridge over the surface therefore, the full shrinkage of the product will not be visually observed

. The net result will be that the minimum required quantity of the THERMO-LAC 3301 Subuming Trowel Grade Material will not be present at the joint, and the full exte of fire resistarse will not be present at that point of the instalhtion, and prema failure of the test assembly may result.

i It is therefore recommended that immediate corrective action en!

action is comprised of reopening the joints, refilling them following the correct procedures, and allowing the material to completely curs. Perform the necess build up of THERMO-LAG 330-1 Sub11 ming Trowel grade Material to insure that th full thickness is present. Allowing the build up to cure is aho essential. Only at point in time should the topcoat be applied.

D InsufBcieniCovering of Primary Raceway Elementa With THERMO LAC Elre Barrier Whkh Abut Other Entities Abo Exoosed To Fire Good engineering practice requires, when fire wrapping a primary raceway ele which interfaces with an ad)oining entity, that it be covered in its entirety and to its full extent with the fire barrier matetal first. Only when this step is completed is the adjoining entity protected. If this order of installation is not maintained, fire accesa penetrations may resuh on the surface of the raceway being protected at the interface between the two entities. This is a result of the consumption of the fire barrier on the " adjoining entity" which in turn exposes the unprotected segment of the electrical raceway.  !

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Mr. Richard Casares Texas Utilities 3 June 1992 Page5 Figure 2 depicts an interface of a raceway with a structural support. TU's instaUen

- have consistently installed the fire barner system materials to the structural support first, fouowed by the instauation of the fire barrier system materials to the electrical raceway. As a result, the THERMO. LAG 330 Fire Barrier abuts the THEF.MO. 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.

1 Similarly, in the case of conduits entering Junction boxes or condulets, the conduit  !

rnust be covered with the fire barrier first, foUowed by the appucation of the fire barner to the } unction box or condulet. Also, the extent of the fire wrap on the conduit is inadequate and should include at least a two inch span of conduit penetrating the Junction box or the condulet. TU's installers covered only 0.5" of the l

conduit beyond its interface with the THERMO LAG 330 covered junction box  ;

and/or condulet. As the fire barrier on the junction box and/or condulet is consumed by the fire environment, it is apt to expose an unprotected conduit  ;

segment which is beyond the 0.5* being covered, and cause an excessive temperature i at that location. Figures 3 and 4 depictthis.

Figure 5 depicts the appucation of the THERMO-I.AG 333 to the facsimile of the penetrant through the fire banter. The same concerns apply. The penetrant should be covered for the entire length first.

E) Sueport System For Test Assmblies Above Deck As previously discussed, mach test article must be supported mechanically above j deck. That includes the hartiware as well as the fire barrier. A photograph depicting a succesaful attachment procadure was included with the slide prtsentation and is l also presented in Photographs 18 and 19.

CONFICURATION SPECTFIC OBSERVATIONS (Not covered in General Observ A)

Post Butterine of Scored Sections or foints Between Panels j

Post buttering of joints between panel sections is not acceptable. Post buttering of scored sections of a panet where the stress skin is left intact comprises a viable l' method of assuring that the h01 and cured thickness of THERMO LAG 330 is present.

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Mr. Riclurd Casares 3 June 1992 Texas Utilities Page 6 Since the THERMO. LAC 330 shrmks approximately 25% when trowel applied, tnultiple applications may be needed to assure that a thickness equal to at leut the tluckness of the scored panel exists.

Topcoating over wet areas is not allowed as it will result in undetected and under design thicknesses in these areaA A more detall discussion on this subject was presented in an earlier section of this report.

It was noted that on Scheme 1, Assembly 1 of test article 93543A. an insufficient material thickness was present in the scored areas as ahown in Figure 6. Please CorTeCt.

It was also noted that some joints were void of any prebuttering. Please correct using approved procedures.

It was further noted that the bottom of the horizontal "T" portion on this tray, constructed of several sections, was abnormally sagging. We could not establish whether flat or "V" grooved prefabricated sections were used, and if used, in which direction the V grooves wars running. 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 .he bottom of the "T" section must be identified. If flat panels were used, they should be removed and replaced with "V" grooved panels. De "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 covend with a complete layer of Stress Skin as follows:

Apply a 3/16" thickness of wet THERMCkLAC 330-1 Subliming Trowel Crade 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 Ls more conveniant.  ;

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 wuh approved stainless steel tie wire at 2 inch intarvals.

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Mr. Richard Casares 3 N ,1M2 Texas Utilities Page, This is followed by the installation of stainless steel banding matenal at a maximum of 12 inch intervals.

The final step is comprised of filling the stress skin mesh with THERMO-LAC 330-1 Sub11 ming Trowel Grade Material (normally 0.060" will suffice),

allowing the matenal to cure, and then topcoating, if desired.

B) Upgrade Cable Tray Test Article Scheme 1 Anembly 2 - e93543B T51'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 entire assembly as presently construe:ed with one complete and uninterrupted layer of THERMO-LAG Stress Skin Type 33049, as follows

1) All topeosted surfaces should be lightly hand sanded and all dust residue removed. '

2)

Apply 3/16" thickness of the THERMO LAC 3301 Subliming Trowel Crade Material over the entire surface of the cable tray and allow 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 right angle of the cable tray, cut a place of THERMO-LAG Stress Skin large enough to circumferent'. ally wrap the width of the cable  ;

tray, plus 5 inches, and the desired length plus 2 inch 2s. Form this piece into a right angle.

4) Wrap the stress skin around the cable tray starting at the vertical leg, overlapping the seam on one side by 5 inches. Wrap the next section of stress skin overlapping the fint piece by 2 inches. Tle. the two sections of stress skin together at the seams with stainless steel tie wire at 2 inch intervals. The strans skin 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. PJchard Cuares 3 June 1992 l Taas Utilities Page 8

5) Notch and form the stress skin u required prior to installing on the horuentalleg or radius. Install on the cable tray in the same manner u descnbed in item 4 above.

6) After the cable tray hu been completely wrapped with the stress skin, and all l tie wtre and banding matenal are in place, apply the THERMO-uG 3301 l Subliming Trowel Grade Material over the entire cable tray to i completely cover the stresa skin and futening materials.

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 wtre techruques for obtaining the necessary fire barrier support ne highlighta of these are u follows:

a) TEMO. LAC Stress Skin Type 330-69 wu used to upgrade the right angle section of this test assembly. The stras skin wu fonned in a vertical plain so that it overlapped the back and the front of the test article by 5 Lnches. Thee section of stress skin overlaps were held in place by stretching the tie wire i from one 5 inch bend to the othkr, across the THERMO LAC Prefabricated  ;

Panel.

b) The bottom 90* intersection of the two THERMO LAG Panels wu not upgradd with the Tr'ERMO. LAC Stras Skin Type 330-69 c) The straight sides of the horizontal 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 heruental T wu tied to the stainless steel banding material used to hold the prefabricated panels onto the cable tray.

d) ne tie wires installed on the bottom of the structur ,1 eupports are tied to each other for the purpose of hakiing the bottom h place.

This procedure will not work. Pleue review Figures 8 and 9 and Photographs 20 and 21.

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Mr. Rkhard Casares 3 June 1992 Texas Utilities page 9 O Use of Flat (No W" Croove) Sections of THERMO LAC i Prefahneated Panels function Boxes and Condulets The use of flat THERMO-LAC Prefabricated panels has never been verified by test, and is therefore unacceptable. Please replace the flat sections with 7" grooved secuens and employ recommendations for construction contained in Appendix A hereto. The instaliation detail depicted in Figure 10 has not been previously tested.

D) Incompletely F111ed foints Between Prefabric2ted Sections AD joints between prefabricated sections should be filled at least to the thickness of the adjoining items.

Conduit #93543C, Assembly 1, has points whkh are incompletely filled. This repair must be completed prior to the test if valid results are to be obtained. See -

Photograph 22. ,

l Do not apply over the previously painied surfaces. This surface must be removed and the full gap / joint thickness obtained using correct procedures.

E) Provision Of A Fillet Chamfer Between Two Adjoining Sections Of Dissimilar Diameters or Other Dimensions  ;

I A chamfer ft!!et of THERMO LAG 3301 Sub11 ming Trowel Grade Material must be provided between two adjoining items of dissimilar dimensions. Figure 11 depicts ,

our recommendation. Photographs 23 and 24 shows a typical detail taken from the  !

TU conduit assembly. Sharp discontinuities of this type may produce undesirable l stress concentration at this joint.

l F) Smiing Without Scoring And Under Tension Of Flat mERMO-LAG 330 Mbdcated Panels To Conform To A Substantial Condulet Curvature Photographs 25 and 26 and Figure 12 depict this design. This design imparts substantial stress onto the panet as the normal scoring provided for that purpose is not present. Upon exposure to the fire environment,it is expected that the tie wtre -

banding combination will lose sufReisnt snachardCal properties and Cause the panel to spring loose, and in the process open up the surface of the condulet to direct flame impingement.

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Mr. Richard Casares 3 June 1992 Texas Utilities Page 10 We acommend that only "V" grooved and properly scored, Sted and attached.

panels be used for this instalheion. Or as an alternate, a typical boxed configunden can be used.

O Imerecer Coveraee Of Solice Plates On Cable Trays Photographs 27 and Figure 13 depict the installation. A panel section is supenmposed over an adjoining section of THERMO LAG 330 Prefabricated Panel which abt i the splice plate, and essentlany, 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 ard could result in a premature failure of this joint.' As the primary l

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 support 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.

Our recommendation 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 15L FD Structural Suenort For Conduit The configuration employed for fire protection of structural conduit supports is depicted in Rgure 14. This method has not been tested by TSL  :

i We certainly hope that Texas Utilities will give the items delineated henin considsration and implement appropriate corrective action. We're glad to be of service to Texas Uti!1 ties. Our penonnel are available to assist you in any reasonable L manner possible.

Yours truly, Lebw Ben E. Evans -

Manager of Quality Control i BEE / meg u _ _ _ - _ _ _ _ - _ _ _ _ _

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FIELD SERVICE SURVEILLANCE REPORT PHOTOGRAPHS AND FIGURES 1

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LISTOF PHOTOGRAPHS PHOTOGRAPH 1 LNSTALLATION OF STAINLESS STEEL TIE WIRE i .

I FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO. LAG 330 PREFABRIueD SECHON PHOTOGRAPH 2 LOOSELY FITTING STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICATED SECTION SCHEME 1 TEST ARTICLE 93543A PHOTOCRAF 3 INSTALLATION OF STAINLESS STEEL BANDING FASTENED TO STAINLESS STEEL TIE WIRE SUPPORIING A THERMO-LAG 330 PREFABRICTED SECTION SCHEME 3 -TEST ARTICLE 93S43E ,

PHOTOGRAPH 4 LOOSELY FTITING STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A UfERMO LAG 330 PREFABRICATED SECHON SCHEME 1 ASSEMBLY 1 TEST ARTICLE 93543A PHOTOCRAPH5 - -

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SIDE VIEW OFTHE LOCEILY FITUNG 3 STAINLESS STEEL TIE WIRE ASSEMBLY 1 - TEST ARTICLE 93543C PHOTOGRAPH 6 SIDE VIEW OF THE LOOSELY FUTING STAINLESS STEEL TIE WIRE ASSEMBLY 1 - TEST ARTICLE 93543C PHOTOGRAPH 7 R LOOSELY FTITING STAINLESS STEEL TIE WIRE

LIST OF PHOTOGRAPHS CONTINUED PHOTOCRAPH 8

• LOOSELY rii itNG STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTLNG A THERMO LAG 3s0 PREFABRICATED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A PHOTOCRAPH9 INSTALLATION OF STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFORICIID SECTION '

SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A PHOTOGRAPH 10 -

LOOSELY FTITING STAINLESS STEEL TIE WIRR

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FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO-LAG 330 PREFABRICTED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A PHOTOGRAPH u LOOSELY FITTING STAINLESS SITEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAC 330 PREFABRICATED SECITON PHOTOGRAPH u INSTALLATION OF STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SCHEME 1 - ASSEMBLY 1, TEST ARTICLE 93543A PHOTOGRAPH 13 LOOSELY FTITING STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICATED SECTION SCHEME 1 - ASSEMBLY 1 TEST ARTICLE 93543A l

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USTOF PHOTOGRAPHS CONTLNUED PHOTOGRAPH 14 LOOSELY FUTLNG STAINLESS STEEL TIE WIRE FASTENED TO STANLESS STEEL TIE WIRE SUPPORTING A THERMO LAG 330 PREFABRICATED SECHON SOEME 1 ASSEMBLY 2 TEST ARTICLE 935435 PHOTOCRAPH 15 SIDE VEW OF THE LOOSELY FITTING STAINLESS STTEL BANDING MATERIAL ASSEMBLY 1- TEST ARTICLE 93543C PHOTOCT APH16 '

STAINLESS STEEL:8ANDING MATERIAL WHICH HAS SLIPPED STAINLESS STEEL BANDINO MATERIAL  :

WHICH HAS SLIPPED 1

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SUPPORTSYSTEM FOR HST ASSEMBLIES ABOVE DECX PHOlvvKAPH19 -..

SUPPORT SW"IIM POR TEST ASSEMBUES ABOVE DW W

PHOTOCRAFH 2O

. CABLE TRAY UPCRADE PHCTTOCRAPH 21:

CABLE TRAY UPCRADE

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USTOFPHOTOCRAPHS CONTLVUED PHOTOCRAPH 22 LNCOMPLETELY FILLED JOINT BETWEEN PREFABRICATED SECTIONS PHOTOCRAPH 23 FILLET CHAMFER BETWEEN TWO ADJOINING SECTIONS OF DISSLMILAR THERMO. LAG PREFABRICATED SECTIONS PHOTOCRAPH 24 FILLET CHAMFER BETWEEN TWO ADJOINING SECTIONS OF DISSIMILAR THERMCALAG PREFABRICATED SECTIONS PHOTOGRAPH 25 -

CONDUIT ASSEMBLY EMPLOYING PRESTRESSED THERMO LAG PREFABRICATED PANEL AS ITS BASE a !

PHOTOGRAPH 26 CONDUIT ASSEMBLY EMPLOYING PRESTRESSED .

THERMO LAG PREFABRICATED PANEL'AS ITS BASE PHOTOGRAPH 27 .,

SPUCE PLATE DETAIL ON CABLE TRAY TWCLE .

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INSTALLATION OF STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SL7 PORTING A i THERMO. LAG 330 PREFABRIQ r.D SECTION W xW 0

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l PHOTOGRAPH 2 LOOSELY FITTING STAJNLESS STEEL TIE WIRE l

FASTENED TO STAINLESS STEEL TIE WIRE i

. THERMO-LAG 330 PREFABRICATED SECTION

! SCHEME 1 - TEST ARTICLE 93543A i

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i PHOTOCRAPH 3 LNSTALLATION OF STAINLESS STEEL BANDING FASTENED TO STAINI.ESS STEEL TIE WIRE SLTPORTDiC A THERMO-LAC 330 PREFABRICTED SECTION SCHEME 3 TEST ARTICLE 93543E

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PHOTOCRAPH 4 LOOSELY FITTING STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SL7PORTLNC A THERMO-LAC 330 PREFABRICATED SECTION SCHEME 1 ASSEMBLY 1 TEST ARTICLE 93543A j

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PHOTOCRAPH 5 SIDE VIEW OF THE LOOSELY FITTING STAINLESS STEEL TIE WIRE i ASSEMBLY 1 TEST ARTICLE 93543C (P

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PHOTOCRAPH 6 SIDE VEW OF THE LOOSELY FTITNG STANLESS STEEL TIE WHIE ASSEMBLY I . TEST ARTICLE 93543C f

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?HOTOCRAPH 3 LOOSELY FITTNG STAINLESS STEEL T2 W:RE FASTENED TO STAINLESS STEEL T3 WIRE SL7PORTNG A THERMO-LAC 330 PREFABRICATED SECTION SCHEME 1 - ASSEMBLY I TEST ARTICLE 93543A A M'mL .

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h PHOTOCRAPH 9 LNSTALLATION OF STAINLESS STEEL TIE WIRE FASTENED TO STAINLESS STEEL TIE WIRE SL7?ORTD:C A THERMO-LAG 330 PREFABRICTED SECT!ON SCHEME 1 ASSEMBLY 1 TEST ARTICLE 93543A l

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LOOSELY ru iWC STANLESS STEEL TE WLRE FASTENED TO STAINLESS STEEL TE WIRE SLT' PORTING A THERMO-LAC 330 PREFABRIu cD SECT:ON SCHEME 1 - ASSEMBLY I TEST ARTICLE 93543A

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i SCHEME I - ASSE.\ GLY 1 TIST ARTICLE 93543A l l

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SUPPORT SWTEM FOR TEST ASSEMBUES ABOVE DECK

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B PHOTOCRAPH 20 4 CABLE TRAY UFCRADE l'

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. CABLE TRAY LTCRADE I

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PHOTCCRAPH 23 FILLET CHAMFER BETWEEN BVO ADJOINING SECTIONS OF DISSD. FILAR THERMO-LAC PREFABRICATED SECHONS l

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J PHOTOCRAPH 24 FILLET CHAMFER BEDVEEN TWO ADJOL%'C SECHONS OF DISSL\ULAR i

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PHOTOCRAPH 25 CONDLTT ASSEMBLY EMPLOYING PRESTRESSED THERMO-LAG PREFABRICATED PANEL AS TT5 BASE

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i l SPUCE PLATE DETAIL

ON CABLE TRAY TEST ARTICLE i

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y TET LIST OF RGURES RCURE 1 DECX SIDE STRUCTUAL ASSEMBLY FOR CONDLTT TEST ARTICLE RCURE2 LNTERFACE BETWEEN AN ELECTRICAL RACEWAY AND A STRUCTURAL SUPPORT MEMBER FICURE 3 CONDUIT - CONDULET INTERFACE RCURE4 CONDUIT - JUNCTION BOX INTERFACE RCURE5 PENETRANTS THROUGH THE FIRI BARR[ER RCURE 6 SCORED PANEL SECTION ON CABLE TRAY RCURE 7 PREFABRICATED PANEL INSTALLED ON THE BC'ITOM OF THE HORIZONTAL "T" SECTION USING STAINLESS STEEL TIE WIRE - LACING METHOD RCURE 8 CABLE TRAY UPCRADE FICURE 9 CABLE TRAY UPCRADE

UST OFHGURES CONTINUED RCURE10 JUNCTION BOX CONSTRUCTED FROM FLAT PREFABRICATED PANEL SECTIONS RGURE11 CHAMFERED FILLET AT DISCONTINUTIES RGURE u APPUCATION FOR CONDUITS OF FLAT PREFABRICATED PANEL SECTIONS RGVRE D INSTALLATION OF FREFABRICATED PANET.S OVER SPUCE PLATE RCURE 14 STRUCTURAL CONDUIT SUPPORTS E

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' INTERFACE ilETWEEN AN ELEGRICAL RACEWAY AND A l STRUCTURAL SUPlVRT MEMBER MIERMO tac 330 abuts VIERMO LAG 330 on the earwetural support..As the fire

, se=WismuO.LACappahdisthe ear cs a pport win beo ns.,

a and in ohne wtB eysee time inaproteosd eegenene of the racewey. TU METHOD l

By covering support first boseoen .. Support covered with side penet P*ael of cable army is butted so - ,

overiapping besteen penets making i support - creating week area in the seems enboeammiof support, tray, and also annking a single sessa la lhe bottoen of the tray.

l nienMoi.Ac .uo are n., ee ,r iiw eie tric.i ,-.y \

e n e eno,e wagik as the wey to the escucturne suppere, and penetreees the neaRMO 1.AC 330 Pere servier inherent in this deelga. covering the support. Vieve ese no y _;.4 segmense of she electrical receway RECOMMENDED METIIOD C

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_d iruj By co,cring cable tray first, bottom panel of tray is butted to supgert, then twlon ' " k. Dottoen pancis should oveelap

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8"PP8'8 Protected with T11ERMO-LAG 330440 Pical-54enket (9" Rule)

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TilbO-LAG 330440 Ment.alenhet butted up to support protected with a TifEAMO4.AC 330 Preinbricated Panels cl RECOMMENDED mbt 110D ,

'N ubing T should be covered with11tERMOLAG 3.10 Prefabrica m then flat support should be protected. The fire barrier on the tubing should calend at lease 2" out of flat support. The TilERMO LAG 330440 Flemi-Blanket should be applied over the tube by 2". Fasica with banding.

FIGURE 6 SCORED PANEL SECTION ON CABLE TRAY TU METliOD l

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Sam lines on outskie radius penets were lasofficiently buttered. After several "

- days, snoterial sheenk due to deyt*S C*'l*$

concave seves along cuts. Topeast was added to these areas before they were suffidenely filled.

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- FICURE 7 PREFABRICATED PANEL INSTALLED ON Tile DOTTOM OF Tile HORIZONTAL "r" SECTION USING STAINI M9 STEEL TIE WIRE - LACING METilOD

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Seessie on Reasom el Trey - Use heu penets whenever posedede to lhede massaber of seems.

Dine se eine and innesensel shape, esses M be laced wielt sie were.

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' Skle panels overlap top and bottom pancis making the scam on bossom of test article p - l

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SIDE VIEW * "W*d* * * * "*d' on redhe section or vertical leg above radius.

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- ~ A fair amount of wet TilERMO-LAC 330-e SubbmingTrowel Crade was L

l applied to sides and emeending 5 around front and back panets. U-shaped

- stress skin was added. k also emeended around sides and S* on front and twk l panels.: Brachet covers at right angle section were made of separate pims

-  ? of Seress Skin. These piem cover the bracket cover,entending S~en boesom k U _,_,,_ j h- penet. The Stress Skin was fastened to each other with tie wire , wiel. 6-

\lA A YV V XX Y / xfM - spacing. Wet TilERMO-LAC 330-1 edErlag Trowel Grade was added to

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FK URE 13 INSTALLATION OF PREFADRICATED PANSLS OVER SPLICE PLATH

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3 Top and bottom panels are cut to slae of tray plus thickness of side panels, 8,,, m no . w w h on - m a ,.e t.. ,

Side pends have to esop sa these loonatons, creating more seems la the constructfon.

[D h A small panene is added to coww bo4% wlah 1/r overlap on side pieces.

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. Dands used to fasten beadet covers. .

Top and t=> atom pancia shoukt be cut wide enough to allow for size of tray at widest poent, whkh includes brxhet boits, plus the thickness of skie panels. This will allow for a more conas..uous run of side panets with less cams.

FICL*RE 14 STRUCTL~AAL CONDLTT SUPPORTS TU METHOD

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Support rystenns on thew test articles were es before 157: quality contml penortnel were m vt Informeetm is llanted.

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1Er APPENDIX A TO 1 FIELD SERVICE SURVEILLANCE REPORT ,

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TSI TECHNICAL NOTE 50192 INSTALLATION PROCEDURES MANUAL l

l FOR OFEN TOP !. ADDER BACX CABLE TRAYS AND STEEL CONDUlTS r

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DATE OFISSUE: 1 MAyim DATE REVISED: 7 MAY1992 1

I THERMAL scitNCE. INC.

• 2200 CA15 ENS Dt.

• ST. LOUIS. MO 63076

• 13141 349 1233 Telen: 209901 (Am-mca: 751 ut)

• Telecoo..c (314) 3491207 .

TSITECHNICAL NOTE 50192 INSTALLATION FROCEDURES MANUAL FOR OPEN TOF I. ADDER BACK CABLE TRAYS -

AND STEEL CONDUITS l

P 4

In no event shall Thernu15dence , Inc. be responsible to.anyone for whatever use er nonuse is made of the hdormation coneninad W and in no event'shall Thermal Sdence, Inc., its employens, or its agents incur any obliption or liability for dama ges including, but not limited to, consequential damages, arising out of or in connection with the use, or inability to use, the information contained herein. ~

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b TSI TECHNICAL NOTE 50192 I TABLE OF COS"!TNTS b

i SECTION1 THERMO LAC 330 PREFA3RICATED FANEL READY ACCESS '

BOX DESICN FOR CABLE TRAYS M PACF NO, I 10 INSTALLATION OFTHE ONE OR THREE HOUR 1 THERMO LAC 330 PREFABRICATED FANELD READY ACCESS BOX DESIGN FOR CABLE TRAYS .

SECTION 2 TMFRMO.I_AC 330 PR MAFED CONDIM SECTTON DESIGN  !

10 THERMO LAC FRESHAFED CONDUIT SECTION 13 DESIGN FOR CONDUTTS l l

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TSITECHNICAL NOTE 30192 INSTALLATION FROCEDURES MANUAL FOR OPEN TOP LADDER BACK CABLE TRAYS-AND STEEL CONDUTTS i

SFFTTON 1 THERMO LAG 330 PREFABRICATED FANEL READI ACCESS BOX DEstCN FOR CABLE TRAYM Installation of the THERMO LAG 330 Prefabricated Panel' Ready Access Design to-open top, ladder back cable trays tavolves cutting the number sections required to ~  :

form the are banter from'one or three hour THERMO LAG 330 Prefabricated Panels, forming the fLre barrier sections, and then mounting the sections 'on the open top, .

ladder back cable tray to be protected using mechanical fastenin's techrJques delineated in'the sections which foDow.

Installation Of The One er Three Hear THERMO. LAC 330 Prefabricated Fanel Rsady Aecoen Bar Deelen Far rahle T.__ -

The forming of the fire banter sections ts ' accomplished using one of several l

methods. Three O) or four (4) sided one Q) piece sections are fonned by cutting or scoring, u specified. In the mas of one bour Srv barrier panels, the scoring is done-along the lines where bends are to be made and then making the required 90* bends.

In the case of the three hour 8 e barrier panel, "V" grooves are cut along the lines =

where bands are to be made and then the required 90' bends are made.' The sections, are then completed by fastening the sides together and alling in tha' scored or "V cut corne, with the THERMO. LAG 3301 Subitming Trowel Grade Material 1

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In the other alternative method, individual top, bottom and side pieces are cut from the one or three hour fire barrier prefahru:sted panel, and are then fastened together.

The seams and joints of the section are then filled with thc THERMO-LAG 330-1 Subliming Trowel Grade Material, and as appropriate, structurally enhanced by ,

stainless steel tie wire, stainless steel banding material and/or THERMO LAG Stress Skin Type 330-69.

Approved mechanical fastening materials to be used for the installation of the THERMO LAG 330 Prefabrkated Panels are:

Stainless Steel Tle Wire 0.032 Minimum Stainless Steel Banding Material 0.5" x 0.020" Minimum The sequential steps involved in installing these fire barrier designs are described in the following paragraphs:

j LO l Installation Of The One er Three Hour THERMO LAG 330 '

Prefabriented Panet Ready Accean Rev Deelen Far(*mhte Trnen 1.1 Cut a section large enouSh to form the bottom section from a one or three hour fire barrier THERMO. LAG Prefabricated Panel The width of the bottom section shall be equal to the sum of the base and both flanges, plus both side of l

the cable tray. The length of the bottom section shall not exceed 6.5 feet, since longer sections are unwieldy and more difBcult to install 1.2 For a one hour design, form a rectangular shaped bottom section by. scoring the THERMO LAG 330 Prefabricated Panal along the bend line, and then maldng two (2) 9C* bends which provide for the side panels. Make sure that a continuous layer of THERMO LAG Stress Skin Type 330-69 is present on the inside, and the score line is completely filled with the THERMO LAG 330-1 Subliming Trowel Crude Material f

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12.1 The dry thickness of the TH'cRMO-LAC 3301 Sub! ming Trowel Crade Material must be equal to the thickness of the panet and meet the curumum thickness criteria of 0.625" 0.125". The THERMO-LAC 330-1 Subliming Trowel Grade Materul may shnnk up to 25%. Multiple applicacons may be required to insure proper dry flim th2ckness.

The THERMO LAC 330-1 Subliming Trowel Grade Material is deemed to be cured when the moisture content does not exceed 20 as measured by a mesiture 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.

13 In the case of the three hour fire barrier design, make sure that a continuous layer of THERMO LAC Stress Skin Type 330-69 is present on the outside.

This is accomplished by the following-L3.1 On the side of the fire barritr facing the cable tray, miter a 45' "V" cut through

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the panet leaving the outer layer of stress in intact. This 45' "V" cut in along the predetermined bend lines.

13.2 Fill the scored "V" cut with the THERMO. LAG 330-1 Subliming Trowel Grade Material. The dry thickness of the THERMO LAC 3301 Subliming Trowel Gnde Material must be equal to the thickness of the panel, and meet the minimum tbha criteria of 1.250" t 0.250". The THERMO-LAC 3301 Subliming Trowel Grade Material may shrink up to 25%. Multiple applications may be required to insure proper dry film thickness.

The THERM 6 LAG 330-1 Subliming Trowel Grade Material is deemed to be cured when the motsture 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 th'. completion of the appitcation, at a minimum ambient temperature of 50*F.

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1 1.3.3 Bend the panel along the "V" cut line.

1.4 Mount the rectangular shaped bottom section on the cable tray using s steel banding materuL The recommended maximum spacing between band is 8 inche.

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Cut a section large enough to form the top section of the cable tray from a one

( or three hour fire barrier THERMO LAG 330 Pnfabricated Panel. T of the top section shan be equal to the base. plus both flange of the j tray, p 1

the thickness of each of the two Q) side of the bottom rectangular section. ' I 1.6 .

Attach the flat top section to the instaUed bottom section #g stainless steel - !

j banding material at a maximum recommended spacing of 8 inch intervals,-

and 8 inches from the stalalass steel bands placed on_ the able tray, as p 1.2 and 1.3 above.

1.7 Attach additional top and bottom sections to previously instaUed section by "probuttering" completely the adjoining ends with a altable quandty of the THERMO LAG 3301 Sub11 ming Trowel Grade Matadal so that when the panels are joined together, the excess trowel grade material forms a continuous product seal completely covering the joint. The THERMO-LAG 330-1 Subliming Trowel Grade Material may shrink up to 25%. Multiple appucations may be required to insure proper dry f!!m thickness.

j The THERMO I.AG 3301 Subuming Trowel Grade Matadal is deemed to be cured when the moisture content dom not exceed 20 as measured by a moeiture meter such as a Delmhorst Motsture Meter, Model DP, or a minimum of 30 days have elapsed fonowing the completion of the application, at a minimum ambient tempenture of 50*F.

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1.8 The followmg sequential steps shall be used when butt joming mdividuals sections af Prefabncated Panels where the gap width is in excess of 0.030 inches:

LS.1 The meuurement of the width of a gap or seam between adjotning sections of THERMO-LAG 330 Prefabricated Panels should be performed and pnor to their prebuttering with the THERMO LAC 3301 Subliming Trowel Crade Materut. The presece of the THERMO-LAG 3301 Subliming Trowel Crade Material in the pp or seam could impact the accuracy of the measurement.

The adjoining sections of panel should be in intimate contact with each other.

While banding, tie wire or other mechanical .*astning materials may be used for support, any tensioning-dghtening of the bending or tie wire, etc., in the proximity of the gap will impact the accuracy of the measurement, and is not permitted.

L8.2 Cut a pie.ce of THERMO LAG Stress Skin Type 33049 large enough to form a complete circumferendal wrap centered over the adjoining sections of the Prefabricated Panel, allowing a 5* minimum circumferential overlap. The width of this section shall be a minimum of to inches.= The length of this section shall be equal to the sum of the bue, top, both sides, plus 5 inches to allow for the required overlap. The orposed edge of the overlap should be secured using staWess steel tie wires at 2 indi intereals.

18.3 Fill in any gaps or joints completely with the THERMO LAG 330-1 Subliming Trowel Grade Material. The THERMO-LAC 330-1 Sub11 ming Trowel G ade Material may shrink up to 25%. Multiple applications may be required to insure proper dry film thkkness.

The THERMO-LAG 3301 Subliming Trowel Grade Material is deemed to be cured when the moisture content does not exceed 20 u measured by a moeiture meter such u a Delmhorst Motsture Meter, Model DP, or a 8

minimum of 30 # ays have elapsed following the completion of the application, at a minimum ambient temperature of 50'F.

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1.3.4 I Securely wrap h butt jouung stres skin section, prepared in 1 ..

o /er h joint formed by the two adjacent Prefabricated Panel se j

sure that there is at least a 5 inch stress sidn coverageI Prefabricated Panel sections in the radial direction and a circumferential dirwetion. i k

1 3.5 Fasten the butt joining stresa skin section on each individ Trefabricated Panel section using stainless steel banding mate should be placed at an approximate distance of 2 inches from th joint being covered. The exposed edge of the overlap shou stainless steel tie wires at 2 inch intervsts.

L8.6 Complete the installation of the butt joining stress skin section a minim'um thickness o( 0.060' of the THERMO-1.AG 3301 Sub1 I Trowel Crude Material onto the circumferential' stress skin wrap, I

forcing the material into the mesh to form a homogeneous pen j,

covering. The THERMO I.AG 3301 Subliming Trowel Crude Mate L 7

shrink up film hmto 25%. Multiple applications may be required to ins [

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The THERMO. LAG 3301 Subliming Trowel Crsde Material is denne II cured when the moisture content does not exceed 20 as measure .

mositure meter such as a t>elmhorst Moisture Meter, Model' DP, or a minbr.um of 30 days have elapsed following h completion 'of the application at a minimum ambient tenperature of 50'F.

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Alternataly, as an aid in securing the structural integrity of the jo 0.030 in width, employ stainless steel tie wire.

The tie wires should be -

- secured using the inner layer of the stress skin as a base.

.In the case of longitudinal joints, the tie wires should be spaced no more than 4 inches apart. - In the case of joints spanning the width or the height of the enclosu the distances between the tie wires should not exceed 2 inc _

should fit tightly against the surface of the' material and employ at least 6 twists.

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Q3 1.9 Cut individual sections, having butted edges, large enou bottom, sides, and top section from a THERMO-LAG 330 1.10 Mount the bottom and side sections on the cable tray using banding material. The recommended maximum spectng betw not exceed 8 inches. Probutter the adjoining ends of the panels w quantity of the THERMO.l.AG 3301 Subliming Trowel Grade Materi when the panels are joined together, the excess of the trowel gr forms a continuous band completely covering the joint.

The THERMO LAG 330-1 Sub11 ming Trowel Grade Material may shrink up to 15%.

Multiple applications may be required to insure proper dry film thicimens.

The THERMO. LAG 3301 Sub11 ming Trowel Grade Materi2l is d cured when the moisture content does not aceed 20 u measure mositure meter such as a Delmhorst Motsture Meter, Model DP, or a minimum of 30 days have elapsed following the completion of the appucation, at a minimum ambient tenperature of 50*F.

L11 Attach the flat top secdon to the installed bottom section using stain banding material at a maximum recommanded spacing of 8 inch i and 8 inches from the stainless steel bands placed on the cable above. Prebutter the ad)oining enda of the panels with a suitab the THERMO LAG 3301 Subliming Trowel Grade Material so that wh panels are )oined together, the acess of the trowel grade material forms continuous bend completely covering the joint. . The THERMO-LAG 330-1 Subliming Trowel Grade Material may shrink up to 15%. Multiple 4

applications may be required to insure proper dry aim thickness.

The THERMO. LAG 3301 Subliming Trowel Grade Material is deemed to cured when the moisture content does not exceed 20 as measured by moniture meter such as a Delmhorst Motsture Meter, Model DP, or a minimum of 30 days have elapsed following the completion of the appucation, at a minhnum ambiet temperature of 50*F.

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l,'12 The following sequential steps shall be used when butt joining in sections of Prefabricated Panels who the gap width aceeds 0.030 inches 1.12.1 Cut piece of THERMO.L.AG Stres Skin Type 330-69 large enoug complete circumferential wrap centered over the adjoining sections of the l Prefabricated Panel, allowing a 5* minimum circumferential over width of this section shall be a minimum of 10 inches. The . length of thts section shall be equal to the sum of the base, top, both sides, plus t 5 inches allow for the required overlap. The exposed ' edge of the overlap should secured using stainlea steel tie wnes at 2 inch intervals. ,

1.12.2 Fill in any gaps or joints completely with the THERMO-1 AC 330 Trowel Grade Material. The THERMO.I.AG 330-1 Subliming Trowel Grade Material may shrink up to 255. . Multfple applications may' be required t insure proper dry film thicknesa. '

The THERMO.I.AG 330-1 Subliming Trowel Grade Material is deemed to be.

cured when the moisture c"ontent does not exceed-20'as measured by_

moniture meter such as a Delmhorst Motsture Meter, Model DP, or 'a~ 4 minimum of 30 days have elapsed following the completion 'of- the application, at a minimum ambient temperature of 50*F. '

1.12.3 Securely wrap the butt joining stress skin'section, prepared in 1.12.I'a'bov over the joint formed by the two adjacent Prefabricated Panel sections. Make -

sure that there is at least a 5 inch stress skin coverage on each of the ad Prefabricated Panel sections in the radial direction and a.5 inch overlap cimunferential direction. The aposed edge of the overlap should be secured ~

using stainless steel tie wires at 2 inch Intervals.

1.12.4 Futen the butt joining stress skin section o' n each individual ' adjoining l < -

1 Prefabricated panel section using stainless steel banding material. The binds-should be placed it an approximate distance of 2 inches from the edge of the

. joint being covered. The exposed edge of the overlap should be secured u ,

stainless steel tie wires at 2 inch intervals.

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U2.5 Continue the installation of the butt joining stress skin sections by filhng in the edges, joints, gaps, etc. with the THERMO LAC 330-1 Sub!! ming Trowel Grade Material. De THERMO LAG 3301 Subthrung Trowel Crade Matenal may shrink up to 25%. Multiple applications may be required to insure l proper dry aim thicknas.

The THERMO LAC 3301 Subliming Trowel Crude 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 minimum ambient temperature of 50'F.

U2.6 Complete the installation of the butt joining stress skin sections by troweling .;

in a minimum of 0.060" of the THERMO LAC 3301 Subliming Trowel Crude Material onto the circumfenntial sensa skin wrap, while forcing the material  ;

into the mesh to form a homogeneous penetrating covering. The THERMO- j LAC 3301 Subliming Trowel Crade Material may shrink up to 25%. Multiple

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app 1kationa may be required to insure proper dry f!!m thicknas.

The THERMO LAC 3301 Subliming Trowel Grade Matedal is deemed to be '

cured when the moisture content does not exceed 20 as measured by a l moniture meter such as a Delmhorst Motsture 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.-

1.13 l Alternately, as an aki in securing the structural integrity of the joint exceeding  !

0.030" in wkith, employ stainless steel tie wires. The tie wires should be l secured using the inner layer of the stress skin as a base. . In.the case of -

longitudinal seams, the tie M > 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 shouki not exceed 2 Inches. The tie wues-should St tightly against the surface of the material and employ at least 6 twists.

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1 QB L14 Cut individual sections having butted edges large enough to form the bottom.

sides, and top section from a one hour fin barrier Prefabricated Panel. The q

bottom and top sections should be equd in width to the width of the esbie  :

eny plus the thickness of the side section.

I L15 Mount the bottom, top and side sections on the cable tray using stainless steel banding material. The recommended maximum spacing between bands shall-not exceed 6 inches. Prebutter the adkining enda of the panels with a suitable quantity of the DERMO. 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 TIERMO LAC 330-1 Subliming Trowel Grade Material may shrink up to 25%. Multiple appucations may be required to insure proper dry film thkkness.

The THERMO. LAG 330-1 Sub11 ming Truwel Grade Material is deemed to be cured when the moisture co'ntent does not exceed 20 as measured by a mesiture meter such as a Delmhorst Moisture Meter, Model DP, or a minimum of. 30 days have elapsed foUowing the completion of the application, at a minimum ambient temperature of 50*F.

i L16 The foUowing sequential steps shall be used when butt joining individual sections of Prefabricated Panels when the gap width exceeds 0.030 inchec L16.1 Cut pieces of THERMO LAG Stans Skin Type 33049 large enough to form a complete circumferential wrap cented over the adjoining sections of the Prefabricated Panel, allowing a 5* minimum circumferential overlap. The width of this section shall be a minimum of 10 inches. The length of this ,

section shan be equal to the sum of the base, top, both sides, plus 5 inches to aUow for the required overlap. -ne exposed edge of the overlap should be secund using stainless neel tie wires at 2 inch intervals.

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1.16.2 Fill in any gaps or joints completely with the THERMO. LAG 3301 Sublimmg -

Trowel Grade Material The THERMO LAC 330-1 Subliming Trowel Crade Material may shrink up to 25%. Multiple applications may be required to insure proper dry film thackness.

The THERMO LAG 330-1 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 minimum ambient temperature of 50*F. I L16.3 Securely wrap the butt joining stress skin section, prepared in 1.16.1 above, over the')oint formed by the two adjacent Prefabricated Panel sections. Make st.ru that there is at least a 5 inch stress sidn coverage on each of the adjoining Prefabricated Panel sections in the radial direction and a 5 inch overlap in the circumferential direction. The exposed edge of the overlap should be secured j using stainless steel tie wires at 2 inch intervals  !

1 1.16.4 Fasten the butt joining stress skin section onlesch individual adjoining Prefabricated Panel section using stainless steel banding matadat The bands should be placed at aa approximate distance of 2 inches from the edge of the .

l joint being covered. The exposed edge of the overlap should be secured using l stainless steel tie wires at 2 inch intarvals.

1.16.5 Continue the installation of the butt joining stress skin sections b'y filling L, the edges, joints, gaps, etc. with the THERMO LAG 3301 Subliming Trowel-Grade Material The THERMO LAC 3301 Subitming Trowel Grade Material may shrink up to 25%. Multiple applications may be required to insure proper dry film thickness.

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i The THERMO. LAG 3301 Subliming Trowel Crsde Matadal is deemed to be ,

cured when the m'oisture content does not exceed 20 as measured oy a  ; i moniture meter such as a Delmhorst Moisture Meter, Model DP, 'or a  ;

minimum of 30 days have elapsed followirg the completion of the' L ,

application, at a minimum ambient temperature of 50*F.

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1.16.6 Complete the installation of the butt joining senss skin sections by troweling in a minimum of 0.060" of the THERMO. LAG 3301 Sublimmg Trowel Gnde Material onto the circumferential stress skin wrap, while forcing the matenal into the mesh to form a homogeneous penetrating covering. The THERMO. '

LAC 3301 Sub11 ming Trowel Grade Material may shrink up to 25%. Muluple applicadons may be required to insure proper dry film thickness.

The THERMO. LAG 3301 Subliming Trowel Grade Material is deemed to be cured when the moisture content does not excemi 20 as measured by a ,

mositure meter such as a Delmhont Motsture 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, u an aid I.n securing the structural integrity of the joint exceeding 0.b30" 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 sps'aning the width or the height of the enclosure, the distances between the tie wires should not exceed 2 inches. The tie wires should fit tightly against the surface of the matertal and unploy at least 6 twists.

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TSI TECHNICAL NOTE 50192 SECTION1 e

l TMFRMO-LAC MD MMMAFED CONDUTT SECTION DESTCN The THERMO-LAG 330 Prushaped Conduit Section Design is comprtsed of mounting the preshaped secdon on the conduit to be protected using mechnaical futening techniques included in the sections which follows.

Approved mechanical fastening materials to be used for the installation of the THERMO LAG 330 Preshaped Conduit Sections are:

Stainless Steel T1e Wire 0.032 Minimum Stainless Steel Banding Material 0.5" x 0.020" Minimum 1.0 THERMO-LAG FRESHAFED CONDUIT SECTION DESIGN FOR CONDUrrs -

Installation of the Prashaped Conduit Section Design to small diameter conduits l Lnvolves mounting two of the one or three hour fire barrier semi <:frtular preshape conduit sections at a time, and then fasterdng them together with stainless steel tie P wire or stainless steel banding material The precoating of the edges of sections prior to installation and the f!Illng in of an gaps at the seams or jotats of the anaamklad sections is accomplished by tuing the THERMO LAC 3301 Subliming Trowel Crade Material, and as appropriate, structurally enhanced by stainless steel tie wire, stainless steel banding matenal, and THERMO LAC Stress Skin Type 330-69.

-l The sequential steps involved in inst Illng this fire barrier design are described in the following paragraphs.

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1.1 IMthU2 tinct of the One er Three er Deafny Mnur Fire BW

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Prebutter the edges on both sections of the one or th THERMO LAG Prashaped Conduit Sections with 330-1 Subliming Trowel Crude Material,Rso M O that I.A C wha inatted together, the excess trowel gr d t e conduits are

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product seal completely covering the joint.a e material form  !

i s Subliming Trowel Cnde Matertal may shrink up to  !

F applications may be required to insurec ness.

proper Multfpie dry flim th i;

The THERMO LAC 3301 Subliming a Trowel Grade M ,

s eemed to be cured when the moistun content does not acee{ measured by a mositun meter such as a Delmhont minimum of 30 days have elapsed following the com e P, or aMotst

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1 p et on of the application, at a minimum ambient temperature .

of 50*F j 1 1.1.2 Mount the prebuttered sections on the conduit with th e edges flush with each other to form a cylindrical section u. asten around the con i the two sections together using stainless steel tie wires or statnle i

i material no nore than 2 inches from both ends of each s the apply 8" specing.

1 ec on or piece,

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Attach additional sections to those previously ae sections by inst ll d

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"prebuttering" ampletely a!! joining ends with a suitabl e quantity of the THERMO LAG 3341 Subliming Trowel Crude Material so that when the

{ conduits an butted together, the acess trowel grade mat  !

i erial forms a continuous pm:!uct seal completely covering the ) tnt  !

330-1 Subliming Trowel Grade Material . ThemayTHERMO shrink LAC up to 25%. Multiple applicationa may be requind to insure s thk proper M dry :

The THERMO LAG 3301 Subliming Trowel Crude Mate ra s eened to be

• cured when the moisture contentasured does by anot acee mositun meter such as a Delmhorst Motstun ! , e , or a minimum of 30 days have elapsed following the compl application, at a minhnum ambtent tempenture of 50'F et on of the i

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