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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. Please 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

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Quest Diagnostics QUESTEMP 36 Manuale Utente Pagina 27

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