Document Rp44e9NRG9XZ0bOYRNZxvM97
FILE NAME Manville JMA
DATE 1980 DOC JMA021
DOCUMENT DESCRIPTION Report - Industrial Hygiene Determinations Transite Products - Simulalted Field Cutting & Product Literature
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Internal Correspondence
To W.B. Reitze
From
D.R. Christensen
1-06 24
Date
July 18 1980
Copies
D.H. G.L.
Markusson Swallow
2-18 1-06
Subject
INDUSTRIAL HYGIENE DETERMINATIONS TRANSITE PRODUCTS - SIMULATED FIELD
CUTTING
The purpose of this study was to simulate probable worker exposures to containing dust while cutting various Transite products and to conduct industrial hygiene evaluations by the method used in the United States prior
to 1969 year OSHA became effective and changed the
analytical methodology The method used for evaluation was the midget impinger which results in concentration determinations in MPPCF or million particles per cubic foot Sampling was also done by the current OSHA approved method for asbestos determination and results
are given in cc or fibers per cubic centimeter
No
In the United States the Greenburg standard impinger
and its midget counterpart were the most widely used
instruments for obtaining dust samples for evaluation by
counting prior to 1969. In the impinger air is drawn
perpendicular through a
set perpendicular
impinged against a glass plate
perpendicular to the orifice
The plate is covered
with free water or other suitable liquid which
serves to trap and retain the dust particles after they
strike the plate The impinger is operated by an electri-
cally driven vacuum pump This instrumentation is generally
suitable for sampling most dusts in the 0.7 to 10 micro-
meter diameter range
The actual apparatus used for these evaluations was the midget impinger filled with 10 milliliters of distilled water aspirated at 1.0 liter per minute by a personal sampling battery operated pump Analysis of samples was done by field microscope at 100X magnification
using 10x oculars and a 10X N.A. = 0.25 flat field achromatic objective The microscope ocular was equipped with a Whipple graticule which is divided into 100
ruled fields of which 25 are used in the evaluation
INDUSTRIAL HYGIENE DETERMINATIONS TRANSITE PRODUCTS - SIMULATED FIELD PAGE 2
CUTTING
The concentration in MPPCF or million
foot is calculated using the following
particles formula
per
cubic
Particles per Cubic Foot = Count X 4 X 1000 X Vol sample
liquid ml
Cubic Feet of Air Sampled
Cutting the Transite products was done with a Rockwell Model 368-1 8...builders power hand saw Figure 1 The saw was equiped with a Carborundum RCC Double Reinforced Silicon Carbide Masonry Cutoff Blade Catalog Number RCC8A
Two work environments were sampled one inside a 40 foot semitrailer with doors open and approximately 10 feet inside the trailer and the second outside in the ambient environment These two situations were chosen as those most closely representative of field conditions Neither of these situations utilize any ventilation control Both general area and personal or operator breathing zone samples were taken in the two work environments
Three Manville Transite products were tested in this study
1. Transite Pipe - 6 Pressure Fig 2 & 3 2 Transite Flat Sheet - Fig 4 & 5 3 Transite Corrugated Sheet - 3/8 Fig 6 & 7
The results of the industrial hygiene determinations are found in Table 1. Please note that the sample durations were from 10 to 15 minutes corresponding to a peak exposure
INDUSTRIAL HYGIENE DETERMINATIONS TRANSITE PRODUCTS - SIMULATED FIELD CUTTING
SAMPLED WEEK OF JULY 7 1980
TABLE 1
FIGURE
NUMBER
PRODUCT
WORK ENVIRONMENT
SAMPLE TYPE
MPPCF CONC
MPPCF TLV
CC
CONC
CC
TLV
2
TRANSITE PIPE
INSIDE TRAILER | PERSONAL 371.1 5.0
AREA
255.9 5.0
18.7 10.0 25.0 10.0
3
TRANSITE PIPE
OUTSIDE TRAILER PERSONAL
6.9 5.0
5.0
10.0
AREA
13.2 5.0
5.9
10.0
4
TRANSITE FLAT SHEET
INSIDE TRAILER | PERSONAL 174.1 5.0
67.8 10.0
AREA
220.7 5.0
62.2 10.0
5
TRANSITE FLAT SHEET
OUTSIDE TRAILER PERSONAL
92.3 5.0
71.2
10.0
AREA
101.8 5.0 63.3 10.0
6
TRANSITE CORRUGATED
SHEET
INSIDE TRAILER | PERSONAL
AREA
81.2 5.0 87.9 5.0
10.0 10.0 10.0 10.0
7
TRANSITE CORRUGATED
OUTSIDE TRAILER PERSONAL
1.2 5.0
2.9
10.0
SHEET
AREA
8.8 5.0
17.2
10.0
* === Concentration extremely heavy number is best estimation
INDUSTRIAL HYGIENE DETERMINATIONS TRANSITE PRODUCTS - SIMULATED FIELD PAGE 4
CUTTING
Major points of discussion regarding the sample results are the following
1. Visual observations support the high concentrations found by the analytical methods
2 No pattern exists as to personal and area samples
that of one being consistently higher than the other
3
Inside trailer results are greater than those found
outside trailer This is to be expected due to
confinement
A.
All inside trailer samples exceed respective TLV's
5
Majority of outside trailer samples exceed respec-
tive TLV's
The above study was conducted at the Denver Development Center by R.C. Cordova and D.R.
- Research &
Christensen
DR DR
DR
DR
DR
Chittinson
Chittinson
Chittinson
Chittinson Chittinson Chittinson Chittinson
D.R. Christensen
Manville
Sales Corporation
Health Safety & Environment Rocky Mountain Area Laboratory
Denver D Plant Denver Colorado 80217
FIGURE 1 ROCKWELL MODEL 368-1 8...BUILDERS SAW
M M Manville Sales Corporation Health Safety & Environment Rocky Mountain Area Laboratory Denver & Plant Server Colorado 80217
FIGURE 2 TRANSITE PIPE
6 PRESSURE INSIDE TRAILER
OM Manville
Sales Corporation
Health Safety & Environment Rocky Mountain Area Laboratory Denver D Plant Denver Colorado 80217
FIGURE 3 TRANSITE PIPE
6 PRESSURE OUTSIDE TRAILER
JM Manville
Sales Corporation
Health Safety & Environment Rocky Mountain Area Laboratory
Denver - D Plant Denver Colorado 80217
FIGURE 4 TRANSITE FLAT SHEET
1/2
INSIDE TRAILER
JM Manville
Sales Corporation
Health Safety & Environment Rocky Mountain Area Laboratory
Denver - & Plant Denver Colorado 80217
FIGURE 5 TRANSITE FLAT SHEET
1/2
OUTSIDE TRAILER
JM Manville
Sales Corporation
Health Safety & Environment Rocky Mountain Area Laboratory
Denver D Plant Denver Colorado 80217
FIGURE 6
TRANSITE CORRUGATED
3/8
INSIDE TRAILER
SHEET
UM Manville
Sales Corporation
Health Safety & Environment Rocky Mountain Area Laboratory
Denver - D Plant Denver Colorado 80217
FIGURE 7
TRANSITE CORRUGATED SHEET 3/8
OUTSIDE TRAILER
JM JUN23 1980
JM
Manville
To W.B. Reitze From D.R. Christensen
1-06 24
filfil fl Kobe!
Internal
Correspondence
InternalCorresCpondoencerrespondence
/
~.
Date June 20 1980
Date
Copies
D.H. G.L.
Markusson Swallow
2-18 1-06
Subject
LEGAL REQUEST FOR INDUSTRIAL HYGIENE MONITORING
ENVIRONMENTAL EVALUATION OF
SIMULATED FIELD
FABRICATION OF TRANSITE PRODUCTS AS DETERMINED
BY THE IMPINGER METHOD
.
Completed
Completed
Completed
Completed
Completed
wild
wild .
4/30/80 4/30/80 7/14/80 7/14/80 7/14/80 7/14/80 7/14/80
In response to the request by the Legal Department to evaluate simulated field fabrication of Transite products
as determinebdy impinger the following itinerary has been
proposed
Sampling Dates Sampling Locations
Week of July 7 1980
1
Denver D
Inside 40 trailer
2
Denver D
Open atmosphere
Products to be Tested 1. Transite Pressure Pipe irim Transite Corrugated Sheet
3. Transite Flat Sheet
Fabrication Routine
Each of the three products to be
tested will be evaluated separ-
ately Cutting will be done with an inch skill saw equipped
with a carborundum blade
Environmental Evaluations
1 Impinger sampling to determine particulate concentration Results will be in MPPCF million particles
per cubic foot
2. Membrane filter sampling to determine fiber only concentrations Results will be in cc fibers
per cubic centimeter This samp-
ling is being done for potential
future data needs
If the above sampling program is inadequate in any area please notify me as soon as possible so appropriate actions can be
; 100 taken
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D.R. Christensen