ASPHALT
FUME EXPOSURES DURING THE
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Current
Practices for Reducing Exposures
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Previous Section | |
4.
Occupational Exposure to Asphalt Fumes
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4.1 Occupational Exposure Limits | |
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4.2 Potential for Exposure | |
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Table
41. Asphalt fume exposures for various occupations during manufacturing
of roofing products
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Breathing-zone
samples
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Exposure
concentration (mg/m3)
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Reference,
source of exposure, and occupation
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Type*
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Number
|
Range
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Geometric
mean
|
Arithmetic
mean
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Apol
and Okawa [1977],
production of asphalt shingles and rolled roofing materials: |
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Saturator
operator
|
Total
particulates
Cyclohexane solubles |
3
2 |
2.27.3
0.812.6 |
4.9
1.4 |
5.6
1.7 |
Coater
operator
|
Total
particulates Cyclohexane solubles |
2
2 |
1415
0.876.8 |
14
2.4 |
14
3.9 |
Coater
trainee
|
Total
particulates Cyclohexane solubles |
2
2 |
1115
0.302.3 |
13
0.84 |
13
1.3 |
Press
operator
|
Total
particulates
Cyclohexane solubles |
2
2 |
6.132
1.41.5 |
14
1.4 |
19
1.42 |
Seal-down
operator
|
Total
particulates
Cyclohexane solubles |
2
2 |
0.991.4
0.431.2 |
1.2
0.71 |
1.21
0.81 |
Foreman
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Total
particulates
Cyclohexane solubles |
2
2 |
5.36.3
0.470.53 |
5.8
0.50 |
5.8
0.5 |
Laminator operator
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Total
particulates
Cyclohexane solubles |
7
5 |
0.962.16
0.230.76 |
1.6
0.46 |
1.6
0.50 |
Okawa
and Apol [1977],
production of asphalt shingles: |
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Laminator operator
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Total
particulates
Cyclohexane solubles |
8
8 |
0.385.2
0.243.1 |
1.0
0.76 |
1.4
1.05 |
Saturator/coater
|
Total
particulates
Cyclohexane solubles |
6
6 |
5.329
0.661.3 |
8.03
0.88 |
12
0.91 |
Apol
and Okawa [1978],
production of asphalt shingles and rolled roofing materials: |
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Saturator operator
|
Total
particulates
Cyclohexane solubles |
1
1 |
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2.4
0.76 |
2.4
0.76 |
Coater
|
Total
particulates
Cyclohexane solubles |
2
2 |
1216
0.211.1 |
14
0.47 |
14
0.64 |
Wrapping machine operator
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Total
particulates
Cyclohexane solubles |
1
1 |
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1.4
0.77 |
1.40
0.77 |
Lead
man
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Total
particulates
Cyclohexane solubles |
1
1 |
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5.3
0.76 |
5.29
0.76 |
Presser
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Total
particulates
Cyclohexane solubles |
2
2 |
8.322
0.300.54 |
13
0.402 |
15
0.42 |
Okawa
and Apol [1978a],
production of asphalt shingles and rolled roofing materials: |
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Coater
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Total
particulates
Cyclohexane solubles |
2
2 |
4.25.1
3.33.9 |
4.6
3.6 |
4.7
3.6 |
Cooling section operator
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Total
particulates
Cyclohexane solubles |
2
2 |
0.31.0
0.71.6 |
0.55
1.06 |
0.65
1.2 |
Machine tender
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Total
particulates
Cyclohexane solubles |
2
2 |
0.42.8
0.61.8 |
1.06
1.04 |
1.6
1.2 |
Okawa
and Apol [1978b],
production of asphalt shingles and rolled roofing materials: |
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Saturator
operator
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Total
particulates
Cyclohexane solubles |
1
1 |
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1.0
2.1 |
1.0
2.1 |
Coaterman
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Total
particulates
Cyclohexane solubles |
1
1 |
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2.1
0.22 |
2.1
0.22 |
Slateman
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Total
particulates
Cyclohexane solubles |
1
1 |
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3.4
0.21 |
3.4
0.21 |
Pozzoli
et al. [1985],
asphalted paper production: |
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Paper
production workers
(smokers) |
Total
PAHs
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4
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0.00480.036
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0.009
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0.014
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Paper
production workers
(nonsmokers) |
Total
PAHs
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2
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0.00340.311
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0.010
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0.017
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AI
[1991]; Hicks [1995],
Roofing manufacturing (temperature of product at fume source from 300 to 468 °F [149 to 244 °C]): |
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Loader/asphalt
handler
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Total
particulates
Benzene solubles |
6
6 |
0.0680.94
0.0410.71 |
0.51
0.31 |
0.66
0.41 |
Slate blend operator
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Total
particulates
Benzene solubles |
4
4 |
1.113
0.0130.94 |
3.9
0.077 |
5.6
0.27 |
Coater
operator
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Total
particulates
Benzene solubles |
8
8 |
0.422.5
0.0491.6 |
1.0
0.2 |
1.3
0.37 |
Machine
operator
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Total
particulates
Benzene solubles |
8
8 |
0.84.4
<0.0713.6 |
1.6
0.55 |
1.9
1.5 |
Press operator/cooling
operator |
Total
particulates
Benzene solubles |
7
7 |
0.5511
<0.0853.7 |
2.6
0.32 |
4.8
1.0 |
Supervisor
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Total
particulates
Benzene solubles |
1
1 |
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1.4
0.32 |
1.4
0.32 |
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Table
42. Exposures during manufacture of asphalt roofing products
Concentration (mg/m3) |
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Sample
type
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Range
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Geometric
mean (GSD)*
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Arithmetic
mean (SD)
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Median
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Total particulates |
0.06813
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1.4
(3)
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2.6
(3.1)
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1
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Benzene-soluble fraction |
<0.0713.7
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0.27
(4.4)
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0.76
(1.1)
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0.24
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4.3 Operations and Jobs with Potential for Asphalt Fume Exposure | |
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Previous Section | |