Phosphine gas release is indicated by a gradual color change in indicator beakers - from transparent to blue. The change happens slowly over hours and unpredictably across multiple beakers at different facility points. Someone had to watch these beakers continuously to catch the moment the color shifted.
That someone was a person staring at a camera feed for hours across shifts. The moment they looked away or fatigued - which is inevitable for any passive monitoring task - there was a window where a color change could go unnoticed. For a Phosphine gas release indicator, that window carries serious safety consequences.
Problem Statement
THE CHALLENGE
Challenges
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Unpredictable timing made continuous monitoring mandatory
Color change could occur at any point across a multi-hour window with no pattern to anticipate
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Human attention not suited for passive continuous monitoring
Fatigue and shift handovers created inevitable gaps in a task that required zero gaps.
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Multiple beakers required simultaneous watch
A single person could not reliably monitor all indicator points across the facility at the same time.
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Gradual change easy to miss
Slow transparent to blue transition made it difficult to pinpoint the exact moment without constant focus.
Solution
THE SOLUTION
We deployed a computer vision system that continuously monitors all indicator beakers across the facility for the transparent to blue color change signalling Phosphine gas release. The system tracks all monitoring points simultaneously and alerts the operator the moment a confirmed change is detected.
Flow: Live beaker camera feed -> Baseline transparent color established -> Continuous color state monitored -> Blue change confirmed -> Operator alerted -> Logged with image and timestamp
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Existing cameras at all beaker positions integrated with color change detection layer.
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Baseline transparent color calibrated per beaker - deviation toward blue tracked continuously.
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All beakers are monitored simultaneously - no single point missed across any shift.
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Operator alert on confirmed change with beaker location, image, and timestamp.
