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Case Study No.1
Poisoning Accident
Cargo : Ferrosilicon
One crew was killed by Toxic gas poisoning.
Ferrosilicon
・UN.No.1408, Class 4.3, Subsidiary risk 6.1
・An alloy of Iron and silicon used to add silicon to steel and iron.
・Color...Silver to grey color
・Sp.Gr. 5.4, insoluble in water.
・Evolves flammable and toxic gases such as hydrogen, arsine and phosphine in presence of moisture
・Arsine (AsH3) and Phophine (PH3) are highly toxic gases.
Phosphine (PH3)
・Colorless, poisonous gas
・Flammable
・Garlic odor
・Vapor density 1.17 (Air 1)
・Insecticide for fumigation
Fig. Structure of vessel
Ferrosilicon (1)
Ferrosilicon (2)
Ferrosilicon (3)
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