Document k66qR85pRdZE1Rbz9qgdmbByE

met tin L\ UNITED STATES MINERAL PRODUCTS COMPANY Ctniul Office Plnt STANHOPE. NEW JERSEY 07674 T*'- 347-1200 Af Cod 201 C*0U: CAfCOfNSUl. York Deo--tbr IS, 1967 Hr* Jack Shall Satisnal Gyproai Ceep&ny 1650 Military Read Buffalo, Sev Tort: U217 PLAINTIFF'S * EXHIBIT USM-280 subject: Air Eroeion Tet Method Dear Jack: Krtoioaed la ths teat used by the Kod&raa AeocaIleal- Laboratorias to ereluate air erosion of sprayed fireproofing. In this rsethod, they used one filter cloth to collect the floss and another one u huaidity control* This sethod has been changed and now only one filter doth Is used, and this is either put In a desiccator or a drying oren before and after each test, ao that changes of teoidity In the atmosphere do not affect the end r*~. suits* T*d like to vi-h you and all of tha'gan;-: *! th* lab a Very :-'erry Christas and ilejipy few loar* ->i.!,certMy youif. `Cncj.opurr-s cc: \vith srxi.j hr* ; Uirron Vormlcullte institute Chicago r* i5* .r<in *W->1 .*xA. *;< J. nr* :* lir-rf * ur.'.nr linden mi WIkjiMuiltiiiof*i|(C*OIUkkSl 0*M(0 H*A<*'Cti*CeUt>OVCUHliOs5* *Np 1C0C*M<*1jvi* ilfA \ OffCt-0Ji$lC*'lMM&l04S0 (Q*u0itMuC(*1t *?>0 *C0v;ltlC*l I. INTRODUCTION; A series of experiments have been conducted to arrive at a detailed, test method that will conform to the requirements out lined in the General Services Administration Interim Guide 'Specification for'Sprayed'Fire Protection consisting of that portion of the specification relating to "Dusting". The speci fication is identified by the number 22h--3B (Int) April 1966. A test apparatus was buiit and is described in this report. A 'number of "shake-down" tests were found-to be required in order to determine how to eliminate the effect of non-specimen dust, . and'-changes in humidity from the test data. These findings are ^reported. *A series of tests were conducted using two samples selected at random from six prepared for test purposes. The results of these tests are also reported. II. TEST APPARATUS: -;The following equipment was used to conduct the last two tests; 'A - A sealed room 161 x 181 x 1J*. This room is constructed with a sealed concrete floor on grade; 8" dense aggregate con crete block walls sealed with 3 heavy coats of latex paint;' a 6" thick poured concrete roof slab (dense aggregate); a 3" thick door equipped with double sealing gaskets and a drop seal. r V PU*W Mf'HI - Pag Two B - Electric motor, centrifugal fan, filters and duct system as shown on Figure 1 of this report consisting of: Electric motor - 7% 'H.P. - 1800 rpm Fan - Class II; 7500 cfm; 2700 O.V.; V S.P.; 1650 rpm; centrifugal, fan Ductwork contains a filter upstream of the test specimen hereafter called the "System Filter" and 'a filter downstream of the test specimen hereafter called the "Collection Filter" These filters are as follows: . System Filter - High performance filter with reinforced non- woven treated cotton fabric media having 95% efficiency in filtering particles of 5 micron size and larger. The filter has a mean efficiency *of 56.5% on KBS type tests. i Collection Filter and Humidity Control Filter - Black nylon fabric having the following characteristics: Thread Comb Per Inch Warp 102 Filling 82.5 Calculated Denier Varp Filling 53.3 (30) 31.5 (30) Page Three The duct system has. an opening wherein a sample 16" x 48" may he installed in such a manner that the 'face of the sample is 4 flush or slightly protruding 'in relationship with the adjacent vails of. the duct* The area of the sample that is exposed to the airflow inside the duct is 4*07 square feet. . C - Air velocity in the duct was measured hy means of a standard 6 blade vane anemometer. D - The Collection Filter and Humidity Control Filter were weighed before and after the test sequences by means of a Single Graduate Balance having a capacity of 100 gram in each, pan and a sensitivity of 1 milligram. Ill* TEST PROCEDURE: . A. - EOOM'AIE PUEGE - Before proceeding with the installation of a test specimen, the test room containing vthe test-apparatus was sealed and the fan of the test apparatus was operated at maximum capacity for a period of at`least 3 hours. During this period only' the System Filter was in place and the recirculation of the air through the system filter provided an air purge that substantially reduced the dust content of the air in the seaVed room. The room volume is 3744 cu. ft. At maximum capacity, the fan will *move about twice the room volume each minute. The three hour air purge has been determined to -be adequate to provide clean air for the test procedure. t t* i .% . Page Four B. - SAMPLE PUHGE CYCLE - The Dust Collection Filter and the Humidity Control Filter are both vacuumed and weighed and then inserted in polyethylene hags Tor transportation to the test ro-om* In the test room both filters are installed in rabbitted wood frames* The Dust Collection Filter is inserted in the duct system downstream of the test sample opening. The Humidity Control Filter and its frame is suspendea'in the test room away from the discharge end- of the apparatus but exposed to air movement. The test sample is installed in the test opening. The fan intake and air by-pass damper located upstream of the System Filter are adjusted to provide a start-up air flow of less than 800 feet per minute. When the fan is operating normally the air by-pass damper is adjusted to increase the air flow to approximately 800 feet per minute. Air flow is measured in the duct. When the required flow is obtained, the flow velocity and time are noted. After the test sample purge cycle time is completed (usually six hours), both the Dust Collection Filter and the Humidity Control Filter are weighed. The Dust Collection Filter difference in weight is noted. The Humidity Control Filter is shaken to dislodge any loose dust before weighing. Any variation of * weight in the Humidity Control Filter is attributed to a- Page Five change in relative humidity in the test room and is added or deducted from the change in weight of the Dust Collection Filter. ` C. - TEST CXCL2 - The. same procedure is followed for the test cycle (usually 24 hours) as is described above for the Sample Purge Cycle. IV. DATA: ^. The data is submitted in net gain in grams per square foot of test sample area exposed to the air flow. The tests conducted of -the two samples were weighed at 5 hours, 6 hours, 24 hours and 48 hours. The data sheets and a graph showing dust collect- versus time is included with this report. A copy of the manufacturer's description of the test-samples is also enclosed *#talj*heo tsso United States Testing Company, Inc. HOBOKEN, N. J. 07030 201-792-2400 REPORT num: 07C (R(cr to tfci. June .2 Client: Kodaras Acoustical Laboratories 75-02 - 51st. Avenue Elmhurst, New York 11373 Subject: One small sample of black fabric sampled and identified by Client as "Black Nylon Chiffon". Clients letter dated June 20, 1967* Tests Conducted Thread Count Per Inch Warp Filling . Average Test Results 102 .82.3 `.Calculated Denier Warp Filling 33.3 (30) 31.5 (30) The above tests were conducted in accordance with Standard laboratory conditions and procedures (70F. and 65j R.H.) * * * * +* * /:* Pa^c 1: of 1 2>uperr;ic*d Pk cur Lrrrr*t *xo Rt.or arc ro tm oatr*eLuivt or twi cucht ra whom Thi-y arc Acontuco. ako tmcir communication to amt TNI UC or Tn< NANI or U HIT IO ITATII TIITINt COWrANT, INC,. NUIT RCCCIVC OUR PRIOR WAfTTIN A.PAOTA L. OUR tCTTCR* ANO RIRORTO M' TNI AN.|,( TCOTIO AND ARC NOT H CO f ARILT INOICATIVI or Tt OUALITIC* O. Ar.Anr..-i_- w, i-* f ftHalAR f.OOUCTI. lAU.ltt HOT IH TIITIN, ARC RCTAIHC A UAIIKUN Of THIRTY OAT., THE REPORTS ANO LXTTPT** 4**ki t<MITC0 STATE 0 TC3TIKC HC_ OR JTS SEALS OR 1N6I0HUL, ARC HOT TO SC USCO UNOCR ANT BTANCK8 IH AD VCR 4 ** 70 THC CCNCRAL Pf  r-r~ ` * Sprayed Mineral Fiber Manufacturers fAHUFAG'SUKKn: Association, Inc./y / jr / ' __ __ r~ // ...................,.......,-r^//;......yf . ' .uds: ' Sacple #5____ ___ _JDA5x::____ 6/23/67 .. XAL-453 SPCS. GSA No, 224-3A (Int) 11/64 ' "*mcQ*".....w'"v7,r ^T* 0? SF r*.....* . /s't 3om Air *2 PM to ; urge 3 PM ? 2000 fpm# --` hrs. ]6/19/67 c; .. \-- J- ' pecumen 3:30 PM U 11.2161' +.095 irge to l 798 fpOr; gr. \ hrs. 6:30 PM J! 11.3165 -.6/20/67 h gr. I #. * >ec. urge hrs. ?9:45 AM 11.235) 12:45 AM 809 pm". 11.240) (6/21/67 ii i .005 +m hrs. t, J4:30 PM II11-191!. [6/21/67 810 fpmH ! 10:30 AM {6/22/67 j: 11.218 j :*.* <} .02? >) *. 11.044-', iil * 11.061 } l ii 11.067 \ s-i 11.067! ii \ |i 11.020 V i\\ i\ 11.020; $) i +.017 o o st hrs. *1:30 PM - || 11.190{ :6/23/67 ii 5 ; f 803 fpnfj a:30 PM j: 11.2261 jS/24/6? ,036 H11.016J 1If 14 2 i? 11.039 I 5! . 1 .023 ti iii t IIt S3 * t I:S u it sn U u I ii 5i ii- ii 41 ii II 13 ii i3 K ,_ 078 : .019 : (.02) i\ Hji. %: .005^ * .001 (.00) 1? -027 ; .007#24 ? (.01) ,013 5 .003 i (.00) M Ii !! ji n ii 11 ii :i 1! t: i: j: l I!<V ;: li i \ a 4 Sprayed Mineral Piber 'Manufacturers fcra?AcanmEa: Association, Inc. CASE 6/26/67 r Tj'~L:--gaapl el #1--------------------------- ... i3?-?.. KAI^-433 _ -JO? SPECS. GSA Mo. 224-3A (Int) 11/64 i7-^ . size SIT/-. 24*;^ .4.07. s.p. r* ( 2inc - *** ** A42? ' ;, is.'..-;. WnViN u, Control s j it j ;; ^iivO filter \ : Piltsi- filter ,........... * ; ::*;t { Velocity/) V/t.ChgoJ t.'c-iriit vn;. Cli^e! j C lin : 0s in/S? unitnon r-oto ! ppm tt Sr.___r<. __ Sj_ 53? vj c--*- pecimen`2 PM to 7:11.168 i urge 5 PM 806 fpnr'11.227 1 hrs. (6/26/67 il 3 +059 U^ it 11.0161 11.029 + .013 ii a\ #04-6 ti :* .011 (.01) 4; pecimenilO AM* % Hll.160 * * urge hrs. to 1 PM 809 fpm: {11.176 l :6/27/67 *J sst |4 PM 3 hrs. :6/27/67 * j 803 10 AM * 16/28/67 * 5 fl* 1c5:11*160 i 4Ifi ! in. 170 I i +.016 +.010 h 11.024/ j; <i *' 11.016!> 1 ?$ii ii i i ?; 11.016'- }j * . s 11.022! . ;! -.008 (+.024 . + .006 4J* i * il :4.004 *; * ; .006 (.01) (.0.0001) St ` 10 AM J hrs. |7/5/67 lO AM | i7/6/67. 808 i 5 ill. 163 If it ? 11.180 3iHti\ i! t}J* ji * Ji j} tt .1 +.017 * )\ 11*030; c! a ll 11; 025 H a !i *?< U i\ 4 i; it ) 1 -.005 J+.022 t it i !i r: O* ( a H\< tf :j ls .005 U1 K'AKO.r/iSJF; c -V.oOO SPRAYED MINERAL FIB E R MANUFACTURERS ASSO C IATIO N , IN C . UNITED STATES MINERAL PRODUCTS COMPANY SJNCC 1075 STANHOPE, NEW JERSEY 07874 Tel. 3*7-1200 Ata Cede 2( C*oi. CAfCOiNSUl. Nc Ye June 12, 1967 Kr. Kicbael J. Kodaras, President ' * Kodaras Acoustical Laboratories , '* 75-02 51st Avenue ,, Elmhurst, Now York 11373 .a Dear Kike: We will bedelivering to you six specimens or eprayed'nirieral Tiber applied approximately 1" thick* to 16" x 4S" gypsum lnth.; The Tiber was sprayed in one application, after which it was given a light water overspray and left unstamped. Eaoh sample has a number and today1 s date on the back*' The data for these specimens are: . .. Sample Ko.: 1 2 3: 4 .5 6 Tare Lbs. 8.63 e;33 7.75 8.33 7.56 8.62 Dry Gross Weight Lbs. 13*88 12*5 ' 13*43 13*43 13.25 14*43 Thickness Inches 1-1/8 1-1/16 1-1/8 1 1-1/16 1-1/16 Density Lbs./Cu.Ft. 10.5 9*1 ` * 12.2 10.2 - ' 11-4* . 12.4 ' .. * Sincerely yours. a IKS/eo ' .. 00: Xr; Hi* Levine - Asbestospray Kr. Hi5 Wilson -- Baldwin-Eirot-Hill Dr. H.* Lieff - Smith & Kanzler Frank M.1 Stumpf Vioe Presidont - Esse * "A mu ms re*u nimr MODwcti o 'W * in ujco m*tu fuc* moiwcii ro muoo .. * iriaul'