Document 9YVyvDOgjvKObQ9VeEmn7z1L
1
ABEX CORPORATION AN EVALUATION OP VARIOUS FACTORS
INFLUENCING AIRBORNE ASBESTOS CONCENTRATIONS
FRICTION PRODUCTS GROUP - WINCHESTER SEPTEMBER 30, 1974 - OCTOBER 4, 1974
/
ORIGINAL: /G. CC: C. A. C. E. M. C. D. F. J.
Nicholson
C. Blackwell, Jr., M.D.
A. Borin
L. Broadstreet
H. Feierabend
D. Gidley
B. Mallory
c
K. Rennie
E. Tayler, Jr.
P. Fagan - IC Industrie
; PLAINTIFFS I EXHIBIT
i iiiiiii miMiiii in i
ABEX-155
ABEX CORPORATION AN EVALUATION OF VARIOUS FACTORS
INFLUENCING AIRBORNE ASBESTOS CONCENTRATIONS
FRICTION PRODUCTS GROUP - WINCHESTER SEPTEMBER 30, 1974 - OCTOBER 4, 1974
PURPOSE
The purpose of this visit was to evaluate some of the factors associated with the manufacturing of various friction products in order to determine the effects of these factors upon the airborne asbestos concentrations associated with the processes
SUMMARY
For the purposes of this study, the scope of this evaluation was essentially confined to three general locations: the book preformers, the block preformers, and the strip roll machines. Samples were taken in other locations, but the majority of the sampling occurred at these three locations. The variables that were considered during this study were: the type of mix used and the fiber length of the asbestos associated with the specific mix, the height of the employees, the working habits of the employees (clean or dirty) , and the effect of additional experimental enclosures upon the airborne concentrations of asbestos.
The results of this study indicate that the type of mix used, and the degree of enclosure significantly affects the airborne asbestos concentrations generated at the various preforming operations. Tht factors of employee height and the employee working habits were secondary factors, and by themselves did not significantly affect the airborne asbestos concentrations.
Each of the variables investigated during this study will be summarily discussed m the following sections of this report. Various comparative appendices and a sketch are also attached.
DISCUSSION
Mix tvoe: Using tne comparative data gathered from the vanou mix types (see Appendix #2) , there are two trends that emerge. First, the wet mixes generate far less airborne asbestos at various preforming operations than the dry mixes. Second, the
mixes containing more of the longer asbestos fibers m their composition are associated with higher airborne asbestos con centrations. The mixes containing the longer asbestos fibers are generally lighter and fluffier than the mixes containing more of the shorter asbestos fibers. The lightness of the mix adds to the propensity for the airborne distribution of the asbestos fibers.
Regarding wet mixes and the amount of airborne asbestos that they generate, reference is made to Appendix #2, samples #14 & #15 and #20 Sc #21. These four samples were taken at two similar strip roll machines (#3 Sc #4) . These two machines were sampled in the morning and in the afternoon on the same day. The only variable was that the operators switched machines in the afternoon. Both operators selected were about the same height, and both work very cleanly. The resulting airborne asbestos concentrations were as follows: strip roll machine #3 - (sample #14 0.50 fibers 7'3/i/mi), strip roll machine #4 - (sample #15 0.43 fibers > 5/i/ml) , strip roll machine #3 (sample #20 0.29 fibers > 5/i/ml) , and strip roll machine #4 (sample #21 0.18 fibers 7* 5/a/ml) . The average of these four samples is 0.35 fibers> 5/a/ml which is very low especially when there is no local exhaust ventilation provided at these machines. The wet mixes, by binding the asbestos fibers with the other components m the mix, generate very little airborne asbestos in the preforming stages.
The length of the asbestos'fibers used in the various mixes is also a significant factor related to airborne asbestos concentrations. Referring to Appendix #2 again, most of the mixes studied contained approximately 50% of the long fibered asbestos and 50% of the shore fibered asbestos'. The average fiber count computed for these mix types was about 1.5 fibers >5/a/ml. This average figure can be compared with samples containing only the longer fibered asbestos. Samples #3 and #11 were such samples containing 100% of the longer asbestos fibers. The mix used for these two samples was 80 mix used in the block preform department. The results for these two samples were - (sample #3 4.10 fiberst- 5,u/ml) and (sample #11 3.59 fibers> 5/./ml) . These results are approximately 2h times the average count associated with mixes containing equal amounts of the shore and long fibered asbestos.
Another comparative observation made was between the 80 mix results versus results taken at the same machine with the same operator but with another mix (mix 551CSC)- This was sample #16 and the resulting concentration was 1-2- fibers
>5/i/ml almost 3 times less than the airborne concentration that was generated when 80 mix was being used at the machine.
These results strongly indicate that the dry fluffier asbestos mixes containing the longer fibers will generate more airborne asbestos them -mixes containing asbestos of shorter fiber length. Perhaps the shorter asbestos fibers are more effectively bound up in the mix than the longer fibers. In any event, substi tution of the longer fibered asbestos by the shorter fibered asbestos should be investigated.
Employee Height; Another of the variables studied was the relationship between the height of the employees and the air borne asbestos levels. Attention is called to Appendix #3 which gives comparative data on employee he.ight and Appendix #4 which gives data about the book preform area. For the purposes of determining the effect of the operator height on airborne asbestos concentrations, a total of 4 samples were taken. The two operators selected were 6 ft. tall and 5 ft. 6 in. short, respectively, and they changed positions so that each worked on all four machines for equal periods of the sampling day. All of the other conditions, mix type, etc., remained the same. Samples #1 & #2 and samples #12 & #13 represent this sampling situation.
Operator #3C-4418 (6 ft. tall) worked on machines #9 and #13 (sample #1) in the morning and then machines #15 and #16 (sample #12 in the afternoon. His levels of exposure were identical: (sample #1-1.46 fibers > 5n/ml) , (saunple #12-1.46 fibers > 5/i/ml) . His average exposure was 1.46 fibers > 5p/ml.
Operator #3C-730 worked on machines #15 and #16 (sample #2) in the morning, and then on machines #9 and #13 (sample #13) m the afternoon. His levels of exposure were: (sample #21.'75 fibers > 5,11/ml) , (sample #13-1.54 fiber s > 5/i/ml) . His average, exposure was 1.64 fibers> 5^i/ml.
These results indicate that the operator height is not an important factor m regards to employee exposure to airborne asbestos.
Employee Working Habits: The type of working habits studied was associated with the degree of care an employee took wnen working with the mixes and how much dirt was being generated during his normal working activities. Two arbitrary para meters, clean and dirty, were selected. Clean meant that the
operator did not generate large amounts of dust as he worked and that he kept himself relatively clean for the operation involved. Dirty meant that the operator generated more dust than average and that his person was pretty dirty too. Refer ence is made to Appendix #3 which compares the operators' working habits-..
The average concentration for clean operations was 1.53 fibers > 5^/ml (for 12 samples). The average concentration for dirty operations was 1.61 fibers> 5/i/ml (for 7 samples) . During this study the operators would work on the same machines to keep the number of variables to a minimum. The average concen trations for the clean and dirty operators were based on dry . mixes containing approximately 50% long and 50% short asbestos fibers. Samples involving 80 mix and wet mixes were not con sidered because of the effects that those variables had upon the concentrations. The results of these tests indicate that the differences between dirty and clean operators in their exposures were not significant under similar working conditions and with the same mixes.
Experimental Enclosure: Four machines (#9, #13, #12, and #16)
in the book preform department were chosen in order to see
the effects of additional enclosure upon airborne asbestos
concentrations. The attached sketch #1 gives a rough indir-
cation as to what the additional enclosure consisted of.
Appendix #4, samples #25 & #26 and #27 & #28 give the results
of these tests. Samples #25 Sc #26 were taken at machines #9
Sc #13 and #12 Sc #16 respectively, before the additional en
closure was attached. Samples #2 7 Sc #28 were taken at the
same machines respectively after the additional enclosure
was attached.
'
The sample results are as follows:
a. sample.#25 - 1.75 fibers > 5>i/ml (no additional enclosur b. sample #27 - 0.84 fibers > 5/i/ml (with additional
enclosure). c. sample #26 - 2.31 fibers > 5,u/ml (no additional en-
closure). d. sample #23 - 1.31 fibers > 5>u/ml (wit'n additional
enclosure).
These test results clearly indicate that the exposure levels were reduced m half as a result of the additional enclosure.
ronclusions: As a result of this study the following recommen
dations are made:
.
1. At the book preform, block preform, disc preform and other areas where high airborne asbestos concentra tions. have been detected, enclose the operations as much as is practical. Sheet metal enclosures are preferable, but canvas or lead vinyl curtains can be effectively used too.
2. Where practical, substitute wet mixes for dry mixes in the preforming stages.
3. Where practical, substitute mixes containing asbestos
fibers of shorter length for mixes containing asbestos
fibers of longer length.
.
During the visit, I received excellent cooperation from Jeff Nicholson, Lloyd Broadstreet, Roger Dillon, Charlie Mallory, and Bob Brown. I thank them all for their assistance and courtesies.
VISITED BY:
11/6/74
REVIEWED BY: M. D. Gidley, ^lerftified
Industrial Hygienist
FRICTION PRODUCTS GROUP WINCHESTER, VIRGINIA APPENDIX #1
FIELD SAMPLE #1
-.
Fiber count>5ji/ml--1.46 Lab No. - 1839 Loc.-Book Preform #13 (new exhaust design) & Book Preform #9 fcid exhaust design) Med. Study #3C-4418 Date - 10-1-74 Times 8:55am--10:42am Sampling rate in liters per min. - 1.9591 Air vol. (liters)-209.6 Avge count/field--2.00 Mix used #13-55lD-333 Mix used #9-55lD-333 Percent long fibers in mix 551D-333 - 55% Percent short fibers in mix 551D-333 - 45% Work habits - clean Worker height - 6 ft. Ventilation (fpm) #13 a. at wergh scale slot
face -- 3,500 b. at front hood press
face - 600 c. at side hood face-
300 Ventilation(fpm) #9 6 a. at top hood face -
1,200
FIELD SAMPLE #2
Fiber count>5^/ml-1.75 Lab No. - 1840 Loc.--Book Preform #15 & Book Preform #16 (both are old exhaust design) Med. Study #3C-730 Date - 10-1-74 Time: 9:00am-10:54am Sampling rate in liters per min. - 1.9823 Air vol.(liters)-226.0 Avge.count/field-2.58 Mix used #15-133-9 Mix used #16-55lD-333 Percent long fibers in mix 133-9 - 26% Percent snort fibers in mix 133-9 - 74% Percent long fibers in mix 551D-333 - 55% Percent short fibers in mix 551D--333 - 45% Work habits - dirty Worker height - S'S" Ventilation (fpm)#15 a. at top hood face
1,300 Ventilation (fpm) #16 a. at top hood face
1,200
FIELD SAMPLE #1
Fiber count> 5ji/mlLab No. - 1841 Loc.-Book Preform Med. Study #3C-405 Date - 10-1-74 Time: 9:21am--10:4E Sampling rate in 1 per min.-1.9591 Air vol.(liters)--3 Avge. count/fieldMix used #5 - 80 n Percent long fiber 80 mix - 100% Percent short fibe 80 mix - 0% Work habits - dirt Worker height - 6 Ventilation- (fpm) a. at front hood f
1,500 (left) Double cavity mac!
FRICTION PRODUCTS GROUP WINCHESTER, VIRGINIA APPENDIX #1
FIELD SAMPLE #4 Fiber count>5;u/ml - 1.73 Lab No. - 1842 Loc.-Block preform #17 Medical Study #3C-735 Date: 10-1-74 Time: 9:27am--10:45am Sampling rate in liters per min.-1.9359 Air vol.(liters)-151.0 Avge.count/field-1.71 Mix used #17--551-C Percent long fibers in mix 551-C - 56% Percent short fibers in mix 551-C - 44% Work habits - clean Worker height-6'1" Ventilation (fpm) a. at front hood face--
1,600 Single cavity machine
FIELD SAMPLE #5 Fiber counts 5;j/ml - 1.20 Lab No. - 1843 Loc. - Disc brake preform #1 Med. Study #3C-424 Date - 10-1-74 Time: 9:34am-ll:3lam Sampling rate in liters per min.-1.9823 Air vol.(liters)-232.0 Avge.count/field-1.82 Mix used -672-124 Work habits - clean Worker height - 5*8" Ventilation (fpm) a. left side press area
1,200 b. right side press area
1,200
FIELD SAMPLE #6 Fiber counts5u/mlLab No. - 1844 Loc. - Blank Date - 10--1--74
FRICTION PRODUCTS GROUP WINCHESTER, VIRGINIA APPENDIX #1
FIELD SAMPLE #7 Fiber count>5ji/ml-2.99 Lab No. - 1845 Loc.-#2 line Blok O.D. grinder ^SKA-442 #3 Med. Study #3C-2095 Date -- 10-1--74 Time: 9:39am-11:34am Sampling rate in liters per min.-1.9591 Air vol'l (liters) -225.3 Avge . count/field-4.39 Work habits - clean Worker height-6'1" Ventilation (fpm) a. at wheel hood face
1*800
FIELD SAMPLE 8 Fiber count >5ji/ml-0.60 Lab. No. - 1846 Loc.--Set on a post about 6 ft. from Field Sample #7 Date - 10-1-74 Time: 9:41am-ll:37am Sampling rate in liters per min.-1.9591 Air vol.(liters)-227.3 Avge.count/field-0.90
FIELD SAMPLE H9 Fiber count>5u/mlLab No. - 1847 Loc.-Mill groove A
567 Med.Study #3C-727 Date - 10-1-74 Time: 9:43am--11:47 Sampling rate in 1 per min. --1.9823 Air vol.{liters)-2 Avge.count/field--2 Work habits - clea Worker height -- 6 Ventilation (fpm) a. at wheel hood f
1,800
FRICTION PRODUCTS GROUP WINCHESTER, VIRGINIA APPENDIX #1
FIELD SAMPLE #10 Fiber count>5_p/ml -I.68 Lab.No. - 1848 Loc.-Block preform #10 Med. Study #3C-735 Date - 10*1--74 Time; 11:3 9am-l:55 pm Sampling rate in liters per rain.-1.9359 Air vol.(liters)263.3 ' Avge.count/field--2.89 Mix used - 551D Percent long fibers in mix 551D-333 - 55% Percent short fibers in mix 551D-333 - 45% Work habits - clean Worker height -- S'l" Ventilation (fpm)#10 a. at front hood face
1,600 Single cavity machine
FIELD SAMPLE #11
Fiber count^S^/ml-3.59
Lab. No. - 1849
Loc.-Block preform #5
Med. Study #3C-4059
Date - 10-1-74
Time:11:41am-l:5 7pra
Sampling rate in liters
per. min.-1.95 91
Air vol.(liters) 266.4
Avge.count/f ield-6.30
Mix used - 80 mix
Percent long fibers in
80 mix - 100%
Percent short fibers in
80 mix - 0%
Work habits - dirty
Worker height - 6 ft.
Ventilation (fpm) #5
a. at front hood face
1,500
Double cavity machine
FIELD SAMPLE #12
Fiber count>5>a/mlLab. No. - 1850 Loc.-Book preform Book preform #16 are old exhaust d Medical Study #3CDate - 10-1-74 Times 11:43am--2: 0. Sampling rate in per min.--1.9591 Air vol.(liters)Avge.count/fieldMix used #15 - 13 Mix used #16 - 55 Percent long fibe mix #133-1 - 26% Percent short fib' mix 551D-333 - 74Percent long fibe mix 551D--333 -- 5 5' Percent short fib mix 551D-333 - 45 Work habits - cle Worker height - 6 Ventilation (fpm) a. at top hood fa
1,300 Ventilation (fpm) a. at top hood fa
1,200
FRICTION PRODUCTS GROUP WINCHESTER, VIRGINIA APPENDIX
FIELD SAMPLE ^13
FIELD SAMPLE &I4
FIELD SAMPLE #15
Fiber count>5>i/inl - 1.54 Lab No. - 1851 Loc.-Book preform #13 (new exhaust design) & Book preform #9 (old exhaust design) Med. Study #3C-730 Date -- 10--1--74 Timer Hr45am--2 :00pm Sampling rate in liters per min.-1.9591 Air vol.(liters) 264.5 Avge.count/field--2.66 Mix used #13-55lD-333 ^^lix used #9--551D--333 IPercent long fibers in
mix 551D-333 - 55% Percent short fibers in mix 551D-333 - 45% ---Work habits - dirty ^Worker height - 5 16 " -Ventilation (fpm) #13 a. at weight scale slot
face - 3,500 b. at front hood press
face - 600 c. at side hood face-
300 Ventilation (fpra) #9 a. at top hood face
1,200
Fiber count>5/i/ml-0.50 Lab. No. - 1852 Loc. -- Roll Machine #3 Med. Study #3C-767 Date - 10-2-74 Timer 7:48am - 11:07am Sampling rate in liters per min.-1.9823 Air vol.(liters) 394.5 Avge.count/field-1.28 Mix used - 435-7 Wet mix Work habits -clean Worker height-5'9" Ventilation - None
Fiber counts 5/i/ml - Lab No. - 1853 Loc.-Roll Machine #4 Med. Study #3C-4473 Date - 10-2-74 Timer 7r52am-11:04am Sampling rate in lib per min.-1.9591 Air vol(liters) 376. Avge . count/field-1.0 `Mix used - 734-161 Wet mix Work habits - clean Worker height - 5'10 Ventilation -- None
FRICTION PRODUCTS GROUP WINCHESTER. VIRGINIA APPENDIX #1
FIELD SAMPLE #16
FIELD SAMPLE #17
FIELD SAMPLE #18
Fiber count>5ji/ml-1.24 Lab No. - 1854 Loc.-Block preform #5 Med. Study #3C-4059 Date - 10-2-74 Timer 8:02am-10:54ara Sampling rate in liters per min.-1-9591 Air vol.(liters)-337.0 Avge.count/field 2.76 Mix used - 551CSC Percent long fibers in mix 551CSC - 56% Percent short fibers in mix 551CSC - 44% Work habits - dirty Worker height - 6 ft. Ventilation (fpra) #5 a. at front hood face
1,500 (left) b. at front hood face
600 (right) Double cavity machine
Fiber count >5ji/ml-0.97 Lab No. - 1855 Loc.-Block preform #17 Med. Study #3C-735 Date - 10-2-74 Time: 8:06am-10:59am Sampling rate in liters per min.-1.9823 Air vol.(liters) 342.9 Avge.count/field 2.15 Mix used -- 693--555 Percent long fibers in min - 57% Percent short fibers in mix - 43% Work habits - clean Worker height - 6*1" Ventilation (fpm) #17 a. at front hood face
1,400 Single cavity machine
Fiber count >5p/ml-0 Lab No. - 1856 Loc.-Block preform Med. Study #3C-4059 Date - 10-2-74 Time: 10:54am-l:08 Sampling rate in li per min.-1.9591 Air vol.(liters) 26 Avge.count/field 1. Mix used - 693-555 Percent long fibers mix - 57% Percent short fiber: mix - 43% Work habits - dirty Worker height - 6 fl Ventilafaon (fpm) #1' a. at frat hood fact
1,400 Single cavity machii
FRICTION PRODUCTS GROUP WINCHESTER, VIRGINIA
APPENDIX 1
FIELD SAMPLE #19
FIELD SAMPLE #20
FIELD SAMPLE 21
Fiber count>5^1/101-1.15
Lab No. - 1857 Loc.-Block preform #5 Med.Study #3C-735 Date - 10-2-74 Time: 11:02am-1:10pm Sampling rate in liters per min.-1.9823 Air vol.(liters)-253.7 Avge.count/field-1.91 Mix used - 551CSC Percent long fibers in mix 551CSC - 56% Percent short fibers in mix 551CSC - 44% Work habits - clean Worker height - 6'1" Ventilation (fpm) #5 a. at front hood face
1,500 (left b. at front hodd face
600 (right) Double cavity machine
Fiber count>5,n/ml-0.29 Lab. No. - 1858 Loc.-Roll machine #3 Med. Study #3C-4473 Date - 10-2-74 Time: 11:06 am-1:13 pm Sampling rate in liters_ per min.-1.9823 Air vol.(liters)-251.8 Avge.count/field--0.48 Mix used -- Wet mix 435--7 Percent long fibers in mix 435-7 - 0% (?) Percent short fibers in mix 435-7 - 100% (?) Worker habits - clean Worker height - 5'10" Ventilation - None
Fiber count >5>i/mlLab No. - 1859 Loc.-Roll machine Med. Study *3c-767 Date - 10-2-74 Time: 11:08am--1:12 sampling rate in 3 per min.-1.9591 Air vol. (liters) -3 Avge.count/field--( Mix used -- Wet mis Percent long fibej mix 734-161 - 0% Percent short fib* mix 734-161 - 100* Worker habits - c. Worker height -- 5 Ventilation - Non*
FRICTION PRODUCTS GROUP WINCHESTER. VIRGINIA APPENDIX #1
FIELD SAMPLE #22
FIELD SAMPLE 23
FIELD SAMPLE 24
Fiber count75,n/ml-0.00 Lab No. - 1860 Loc. - Blank Date -- 10--2--74
Fiber count.>5,11/1111-2.02 Lab No. - 1861
Fiber count >5n/ml Lab. No. - 1862
Loc.-Disc preform #3 Med. Study #3C-014 Date - 10-3-74
Loc.-Block prefon Med. Study #3C-16l Date - 10-3-74
Time: 8:28am-10:50am
Time: 8:38am-10:4;
Sampling rate in liters Sampling rate in
per min.-1.9823
per min. - 1.9591
Air vol.(liters)-281.5
Air vol.(liters)-
Avge. count/field-3.75
Avge . count/field-
Mix used - 238
Mix used - 551-DS
Worker habits - clean
Percent long fibe
Worker height - S'lO"
mix 551--DSC - 55%
Ventilation (fpm) #3
Percent short fib
a. lower left side small mix 551--DSC - 45%
hood at face, 2,700
Work habits -- dir
b. middle left side
Worker height - 6
small hood at face
Double cavity mac
2,800
-
c. upper left side hopper
exhaust at face -- 600
d. lower right side small
hood at face 2,800
e. middle right side
small hood at face
2,500
f. upper right side hopper
exhaust at face - 500
FRICTION PRODUCTS GROUP WINCHESTER, VIRGINIA APPENDIX #1
FIELD SAMPLE #25
FIELD SAMPLE 26
FIELD SAMPLE 7 7
Fiber count?5u/ml-1..75 Lab No. - 1863 Loc.-Bool preform #13 (new exhaust design) & Book preform #9 (old exhaust design) Med. Study #3C--4418 Date - 10-3-74 Time: 9:02am--10t52am Sampling rate in liters per min. - 1.9823 Air- vol. (liters)--218.1 Avge.count/field--2.5 0 Mix used #13-55lD-333 Mix used #9 - 551D-333 Percent long fibers in mix 551D-333 - 55% Percent short fibers in mix 551D-333 - 45% Work habits - clean Worker height -- 6 ft. Ventilation (fpm) #13 a. at weigh scale slot
face - 4,000 b. at front hood press
face - 600 c. at side hood face -
300 d. at rear hood face-
600 cVentilation (fpm) #9
a. at weigh scale slot face - 4,000
b. at top front hood face - 2 r100
Sample taken without experimental enclosure
m position.
Fiber county 5^/ral-2.31 Lab No. - 1864 Loc.-Book preform #12 & Book preform #16 (both are old exhaust designs) Med. Study #3C-730 Date - 10-3-74 Time: 9r06am-10:53am Sampling rate in liters per min.-1.9591 Air vol. (liters) -209.6Avge.count/field-3.16 Mix used #12 --55ID--333 Mix used #16-47E Percent long fibers in mix 551D-333 - 55% Percent short fibers in mix 551D-333 - 45% Percent long fibers in mix 47E - 100% (?) Percent short fibers in mix 47E - 0% (?) Work habits - dirty Worker height - 5`6" Ventilation (fpm) #12 a. at weigh scale 5,300 b. at top hood face
2 ,200 Ventilation (fpm) #16 a. at weigh scale 4,200 b. at top hood face -
2,300 Sample taken without experimental enclosure m position.
Fiber count?5^/ml Lab. No. - 1865 Loc.--Book preform (new exhaust desi Book preform #9 ( exhaust design) Med. Study #3C--44 Date -10-3-74 Time: 12 :12pm-2 :C Sampling rate in per min.-1.9591 Air vol.(liters) Avge . count/fie IdMix used #13--5511 Mix used #9 - 551 Percent long fibe mix 551D-333 - 55 Percent short fib mix 551D-333 - 45 Work habits* -- cle Worker height - 6 ventilation (fpm) a. at weigh scale
face -- 4r000 b. at front hood
face -- 600 c. at side hood i d. at rear hood f Ventilation (fpm) a. at weigh scale
face -- 4,000 b. at top front 1
face -- 2,100 Sample taken witt experimental encJ
in position.
FRICTION PRODUCTS GROUP WINCHESTER. VIRGINIA APPENDIX 1
FIELD SAMPLE #28
FIELD SAMPLE S29
Fiber count>5^/ral-1.31
Lab No. -- 1866
Loc.-Book preform #2 &
Book preform #16 (both
are old exhaust designs)
Med. Study #3C-730
Date - 10-3-74
Timer 12rl4pm-2:03pm
Sampling rate in liters
per min.-1.9359
Air Vol.(liters)-211.0
Average count/field-1.79
Mix used #12-55lD-333
Mix used #16 - 47E
Percent long fibers in
mix 551D-333 - 55%
Percent short fibers in
mix 551D-333 - 45%
Percent long fibers in
mix 47E - 100% (?)
Percent short fibers in
mix 47E--0% (?)
Work habits - Dirty
Worker height - 5'6"
Ventilation (fpm) #12
a. at weigh scale 5,300
b. at top hood face 2,200
Ventila tion (fpm) #16
a. at weigh scale 4,200
b. at top hood face -
2,300
Sample taken with the
experimental enclosure m
Fiber countp5>i/ml-0.00 Lab No. - 1867 Loc. - Blank Date - 10-3-74
position.
FRICTION PRODUCTS GROUP WINCHESTER. VIRGINIA APPENDIX #2
Ramole No. Field Lab. Mix Used
% Long Fibers in Mix
% Short Fibers in Mix
1 2
3 4 5 6 7 8 9'
10 11 12
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
29
1839 1840
1841 1842 1843 1844 1845 1846 1847 1848 1849 1850
1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866
1867
#55ID--333 #133-9 #55ID--333 #80 mix #5 51C #672-124 Blank
-- -- --
#55ID--333 #80 mix #133-9 #55ID--333 #551D--333 #435-7 #734-161 #551CSC #693-555 #693-555 #551CSC #435-7 #734-161 Blank #238 #55lDSC #55lD--333 #47E #55lD--3 33 #55lD-333 #47E 3 lank
55%
55%) 4054 AV9e-
100% 56%
-- -- -- -- 55% 100%
55%) 40% AvgS*
55% Wet mix Wet mix 56% 57% 57% 56% Wet mix Wet mix
-- -- 55% 55% -- 55% 35%
-
45%
45*>
0% 44%
-- '--
6054 Av9e-
-- --
45% 0%
60,4 Av?e-
45% Wet mix Wet mix 44% 43% 43% 44% Wet mix Wet mix
-- --
45% 45%
--
45% 45%
-
Fiber cour > 5n/ml
1.46
1.75 4.10 1.73 1.20 0.00 2.99 0.60 1.11 1.68 3.59
/
1.46 1.54 0.50 0.43 1.24 0.97 0.74 1.15 0.29 0.18 0. 00 2.02 2.38 1.75 2.31 0.84
1
t
1.31 0.00
samole No. Field Lab.
1 1839 2 1840 3 1841 4 1842 5 1843 6 1844 7 1845 8 1846 9 1847 10 1848 11 1849 12 1850 13 1851 14 1852 15 1853 16 1854 17 1855 18 1856 19 1857 20 1858 21 1859 22 1860 23 1861 24 1862 25 1863 26 1864 27 1865 28 1866 29 1867
FRICTION PRODUCTS GROUP WINCHESTER, VIRGINIA APPENDIX #3
Medical Studv No. 3C-4418 3C-730 3C--405 9 3C-735 3C-424
3C-2095 Post 3C-727 3C-735 3C-4059 3C--4418 3C-730 3C-767 3C-4473 3C-4059 3C-735 3C-4059 3C-735 3C-4473 3C-767
-
3C-014 3C-16S 3C-4418 3C-730 3C--4418 3C-730
-
Work Habits
Clean Dirty Dirty Clean Clean Blank Clean
-
Clean Clean Dirty Clean Dirty Clean Cleem Dirty Clean Dirty Clean Clean Clean Blank Clean Dirty Clean Dirty Clean Dirty Blank
Worker Heioht 6 ft. 5*6" 6 ft. 6'1" 5*8"
-
6*1"
--
6 ft. 6*1" 6 ft. 6 ft. 5*6" 5*9" 5*10" 6 ft. 6*1" 6 ft. 6*1" 5*10"
5*9"
-
5'10" 6 ft. 6 ft. 5'6 '* 6 ft. 5*6"
-
Fiber Count
>5u/ml
1.46
1.75
4.10 (80 mix)
1.73
1.20
0.00
2.99
0.60
1.11
1.68
3.59 (80 mix)
1.46
1.54
0.50 (wet mix)
0.43 (wet mix)
1.24
0.97
0.74
1.15 0.29 (wet mix)
0.18 (wet mix)
0.00
2.02
2.38
1.75
2.31
0.84
1.31 0.00
FRICTION PRODUCTS GROUP WINCHESTER. VIRGINIA APPENDIX #4
samDle No. Field Lab.
Date
Medical Studv No. Location
Fiber
1 1839 10-1-74 3C--4418
1 1839
It
Book preform #13(new exhaust design) Book preform tt9 (old exhaust design)
I
2 1840 10-1-74 3C-730
2 1840
It
It
Book preform #15(old exhaust design) Book preform #16(old exhaust design)
]
12 1850 10-1-74 3C-4418
12 1850
It
It
Book preform' #15 (old exhaust design) Book preform #16(old exhaust design)
J
13 1851 10-1-74 3C-730
13 1851
n
It
Book preform #13 (new exhaust design) Book preform #9(old exhaust design)
I
25 1863 10-3-74 3C--4418
25 1863
II
26 1864 10-3-74 3C-730
26 1864
tt
It
Book preform #13 (new exhaust design) Book preform #9 (old exhaust design) Sample taken without experimental enclosure
Book preform #12(old exhaust design) Book preform #16(old exhaust design) Sample taken without experimental enclosure
27 1865 10-3-74 3C-4418
27 1865
It
II
Book preform #13(new exhaust design) Book preform #9(old exhaust design) Sample taken with experimental enclosure
28 1866 10-3-74 3C-730
28 1866
tl
M
Book preform #12(old exhaust design) Book preform #16(old exhaust design) Sample taken with experimental enclosure
FRICTION PRODOCTS GROUP WINCHESTER, VIRGINIA APPENDIX #5
samole No. Field Lai. Date
tfedical Study No.
Location
3 1841 10-1-74 3C-4059
Block preform #5 (80 mix) double cavity
4 1842 10-1-74 3C-735
Block preform #17 (551C mix) single cavity
10 1848 10-1-74 3C-735
Block preform #10 (551D mix) single cavity
11 1849 10-1-74 3C-4059
Block preform #5 (80 mix) double cavity
16 1854 10-2-74 3C-4059
Block preform #5 (551CSC mix) double cavity
1855 10-2-74 3C-735
Block preform #17 (555 mix) single cavity
1856 10-2-74 3C-4059
Block preform #17 (555 mix) single cavity
19 1857 10-2-74 3C-735
Block preform #5 (551CSC mix) double cavity
Fiber Coi ^5n/ml
4.10 1.73 1.68 3.59 1.24 0.97 0.74 1.15
FRICTION PRODUCTS GROUP WINCHESTER, VIRGINIA APPENDIX #6
sample No. Field Lab. Date
Medical Study No. Location
14 1852 10-2-74 3C-767
Roll Machine #3 (435-7 mix) wet mix No loaal exhaust ventilation
15 1853 10-2-74 3C-4473
Roll machine #4 (734-161 mix) wet mix No local exhaust ventilation
20 1858 10-2-74 3C-4473
Roll machine #3 (435-7 mix) wet mix No local exhaust ventilation
21 1859 10-2-74 3C-767 i
Roll machine #4 (734-161 mix) wet mix No local exhaust ventilation
Fiber Cou >5a/ml 0.50
0.43
0.29
0.18
t
SKETCH #i
BOOK PREFORM
pteseur evctosuAe = ------------Aoancn aL gud94*s Cwooo) - --
v <r
WINCHESTER, VIRGINIA EMPLOYEE NAME MEDICAL STUDY NUMBER REFERENCE
NAME
James Morris Loring McDaniel Richard Kesner T. L. Smeltzer Robert Dove Edward woods Richard Carpenter Gordon Miller Dennis Voit Douglas Clark Thomas Kane
MEDICAL STUDY NO.
3C-44183C-730 3C-4059 3C-735 3C-724 3C-2095 3C-727 3C-767 3C-4473 3C-014 3C-168
v