| Standard | Authority | Legal status | Rule type |
|---|---|---|---|
| China GBZ 2.2-2007 Heat Stress Limits | National Health Commission (China) | Regulation | Schedule Engine |
| China Measures on Management of Heat-Stroke Prevention and Cooling (2012, No. 89) | State Administration of Work Safety / Ministry of Health / MoHRSS / ACFTU (China) | Regulation | Stop Work Rule |
| Guangdong Measures on Labour Protection in High-Temperature Weather (Provincial Government Order No. 166, 2011) | Guangdong Provincial People's Government (China) | Regulation | Stop Work Rule |
Reference conditions: moderate work (300 W), acclimatized worker. WBGT values below are illustrative reference points, not a threshold of any single standard.
| WBGT (°C) | Most protective result |
|---|---|
| 28 | 60 / 0 min work/rest per hr (most protective) |
| 31 | 15 / 45 min work/rest per hr (most protective) |
| 34 | Stop work — At least one applicable standard requires stop work or prohibits continued work. |
This is the single most protective applicable result at each condition (stop-work override, else minimum work / maximum rest minutes) — standards are never averaged. Contributing standard(s) across these conditions: China GBZ 2.2-2007 Heat Stress Limits.
Get notified when any heat or wildfire-smoke standard tracked for China changes — threshold changes, scope and legal-status changes, additions and removals. Changes that permit more heat exposure than before are labelled as such.
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