➤
SE 5 mph

MODEL DISCLAIMER

Gaussian plume approximation using peer-reviewed emission data. Actual dispersion depends on terrain, temperature, humidity, and turbulence. Conservative assumptions used throughout.

Dispersion Controls
Scenario
Wind
Atmospheric Stability
Battery Chemistry
Exposure Zones — Hydrogen Fluoride (HF)
AEGL-3 — Life-threatening / lethal
≥ 44 ppm
AEGL-2 — Serious / irreversible effects
≥ 12 ppm
IDLH — Immediately dangerous to health
≥ 30 ppm
AEGL-1 — Irritation / discomfort
≥ 1 ppm
EPA / DOT ERG Isolation Zone
330 ft
Model Parameters

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Sources: Nature Scientific Reports (2017), EPRI Air Plume Modeling (2024), EPA AEGL Program, NFPA 855, UL 9540A test data. HF emission factor: 20–200 mg/Wh (Larsson et al., Ribière et al.). Gaussian plume with Pasquill-Gifford stability classes.

MODEL DISCLAIMER

Gaussian plume approximation using peer-reviewed emission data. Actual dispersion depends on terrain, temperature, humidity, and turbulence. Conservative assumptions used throughout. Not a substitute for professional AERMOD or CFD analysis.

Scenario
Wind Direction (from)
Stability
Chemistry
Exposure Zones — HF
AEGL-3 — Life-threatening
≥ 44 ppm
AEGL-2 — Serious effects
≥ 12 ppm
IDLH — Immediate danger
≥ 30 ppm
AEGL-1 — Irritation
≥ 1 ppm
EPA / DOT ERG Isolation Zone
330 ft
Model Parameters

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Sources: Nature Scientific Reports (2017), EPRI (2024), EPA AEGL, NFPA 855, UL 9540A. HF: 20–200 mg/Wh (Larsson et al., Ribière et al.).