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1.5 %CO 100,000cf
TWA (OSHA Method)
Based on the CO production rates shown above the TWA would be exceeded in a 100 x 100 x 10 foot (empty) space
after 3 hours with 2 air changes per hour.
1 . 5 %
C O
5 0 0
4 5 0
4 0 0
3 5 0
3 0 0
2 5 0
2 0 0
1 5 0
1 0 0
5 0
0
0
The Graph above depicts the relationships of air exchange to time and CO ppm with cubic feet area
and percent CO emissions remaining constant.
1.5 %CO 500,000cf
TWA (OSHA Method)
Based on the CO production rates shown above the TWA would be exceeded in a 100 x 500 x 10 foot (empty) space
after 6 hours with 2 air changes per hour.
1 .5 % C O E m i s s io n in 7 5 0 , 0 0 0 c u b i c f e e t w i t h 4 8 0 c c 1 4 H P E n g in e a n d c o m p l e t e a i r / C O m ix i n g
5 0 0
4 5 0
4 0 0
3 5 0
3 0 0
2 5 0
2 0 0
1 5 0
1 0 0
5 0
0
0
1
The Graph above depicts the relationships of air exchange to time and CO ppm with cubic feet area and percent CO
emissions remaining constant.
PBU
Operator's Manual (EN) - DC Propane Burnisher
8 Hour Time Weighted Average (OSHA Method)
Hours Operation
0 change/hr
1/2 change/hr
1 change/hr
2 change/hr
(Assumes no additional CO exposure during 8 hour time period)
E m i s s i o n
i n
5 0 0 , 0 0 0
E n g i n e
a n d
c o m p l e t e
1
2
3
4
5
T i m e
( h o u r s )
8 Hour Time Weighted Average (OSHA Method)
Hours Operation
0 change/hr
1/2 change/hr
1 change/hr
2 change/hr
(Assumes no additional CO exposure during 8 hour time period)
2
3
4
5
T i m e ( h o u r s )
1
2
3
4
34
103 206 343 514 719 959 1232
27
70
124 183 246 311 378
22
51
84
118 152 186 220
15
32
49
66
c u b i c
f e e t w i t h
4 8 0 c c
a i r / C O
m i x i n g
6
7
8
9
1 0
1
2
3
4
17
51
103 171 257 360 479 612
14
35
62
92
11
26
42
59
7
16
24
33
6
7
8
9
ENGLISH
5
6
7
8
445
255
83
100 117
135
1 4
H P
0 . 0
c h a n g e / h r
1 / 2
c h a n g e / h r
1
c h a n g e s / h r
2
c h a n g e s / h r
5
6
7
8
123 156 189 223
76
93
110 127
42
50
59
67
0 . 0 c h a n g e / h r
1 / 2 c h a n g e / h r
1 c h a n g e s / h r
2 c h a n g e s / h r
1 0
EN
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