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Office of Railroad, Pipeline & Hazardous Materials Investigations Smoke and Ventilation Issues Nancy B. McAtee Office of Research and Engineering.

Published byErik Holland Modified over 8 years ago

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Presentation on theme: "Office of Railroad, Pipeline & Hazardous Materials Investigations Smoke and Ventilation Issues Nancy B. McAtee Office of Research and Engineering."— Presentation transcript:

1 Office of Railroad, Pipeline & Hazardous Materials Investigations Smoke and Ventilation Issues Nancy B. McAtee Office of Research and Engineering

2 Smoke and Ventilation Overview of ventilation system Timeline Safety issues

3 Ventilation Operations Normal ventilation Emergency ventilation – Vent shaft fans – Station/platform fans Fans controlled from control center or locally

4 Ventilation Operations CTA confirms incident location before activating fans Fan 108 removed but not replaced

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6 Ventilation Operations Initial response – All fans in exhaust Fan 133 Clark/Lake Continuous platform Revised response – Reversible fans switched to supply Fans Clark/Lake Continuous platform

7 Issues Not all CTA fans reversible – Fan 133 - exhaust only – Worked against station fans – Drew smoke in direction of evacuation One fan missing – Fan 108 not present at time of accident – If present, smoke in area of accident removed more efficiently

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