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Minnesota OSHA Indoor Ventilation and Temperature Rule (5205.0110) — Heat Stress Work/Rest Limits

Minnesota OSHA indoor ventilation and temperature rule (5205.0110). Sets WBGT limits for acclimatized workers by workload category. When limits are exceeded, mandatory 30/30 work/rest cycles and airflow/cooling controls are required.

Open Minnesota OSHA Indoor Ventilation and Temperature Rule (5205.0110) in the interactive Guidance Wiki →

Authority
Minnesota OSHA
Jurisdiction
Minnesota State Us
Legal status
Regulation
Rule type
Schedule Engine
Standard ID
HGC-059

Governing formula

No standalone formula is published for this standard; see programmable logic and parameters below.

Work/rest limits

WBGT (°C)Light
180 W
Moderate
300 W
Heavy
415 W
Very heavy
520 W
2460 / 0 min work/rest per hr60 / 0 min work/rest per hr60 / 0 min work/rest per hr60 / 0 min work/rest per hr
2560 / 0 min work/rest per hr60 / 0 min work/rest per hr60 / 0 min work/rest per hr60 / 0 min work/rest per hr
2660 / 0 min work/rest per hr60 / 0 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
2760 / 0 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
2860 / 0 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
2960 / 0 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
3060 / 0 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
3130 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
3230 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
3330 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
3430 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
3530 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr
3630 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr30 / 30 min work/rest per hr

This standard's declared inputs do not include acclimatization status, so results do not vary by it.

Inputs

Required inputs: wbgtC, workload

Optional inputs: none

Sources

Update history

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