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GAS ALARM — DETECTOR THRESHOLD EXCEEDED — TIER-1 HAZARD ANALYSIS TRIGGERED
Wind
N E S W m/s
Speed
m/s
Direction
° (from N)
Process Conditions
Temp
K
V-01
bar
V-02
bar
V-03
bar
Elapsed
s
Tier-1 Hazard Zones
Pasquill-Gifford screening — downwind distances to AEGL thresholds
AEGL-1
Discomfort / odour
AEGL-2
Irreversible effect
AEGL-3
Life-threatening
Substance: · Q: g/s · U: m/s · Class:
Gas Detectors
Detector Readings — Last 5 min
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0 m 500 m 1024 m crosswind Source Wind