TSI Quest QUESTEMP 34 - Appendix C: Accessories; QUESTemp Accessories; Air Probe Accessories

Appendix B: Heat Exposure Tables
ACGIH
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Appendix B: Heat Exposure Tables
ACGIH
Screening Criteria for Heat Stress Exposure. WBGT values in C.
NOTE: According to the ACGIH’s guidelines, the temperature values represent a work and rest
process which is explained in the standards. Refer to the ACGIH TLVs and BEIs for specific
details.
Work and recovery
(TLV )
Light
Moderate
Heavy
Very Heavy
75% to 100%
31.0
28.0
26.0*
23.5*
50% to 75%
31.0
29.0
27.5
25.5*
25% to 50%
32.0
30.0
29.0
28.0
0% to 25%
32.5
31.5
30.5
30.0
Work and recovery
(Action Limit )
Light
Moderate
Heavy
Very Heavy
75% to 100%
28.0
25.0
22.5*
20.0*
50% to 75%
28.5
26.0
24.0
22.5*
25% to 50%
29.5
27.0
25.5
24.5
0% to 25%
30.0
29.0
28.0
27.0
*Values not specified by ACGIH have been estimated for continuity.
Cited from American Conference of Governmental Industrial Hygienists, Threshold Limit Values
and Biological Exposure Indices for 2008. Reprinted with permission.
Appendix B