Reporting Background
See this post for explanation, with the most recent update here (removed from paywall).
Data from PHMSA’s online database of transportation related chemical incidents that have been reported to the agency.
Incidents Summary
• Number of
incidents – 344 (324 highway, 17 air, 3 rail, 0 water)
• Serious incidents
– 1 (1 Bulk release, 0 evacuation, 0 injury, 0 death, 0 major artery closed, 1
fire/explosion, 18 no release)
• Largest container
involved – 25,660-gal (no link available) Railcar {Styrene Monomer, Stabilized.}
Bottom outlet valve cap loose and minor leak past BOV seal.
• Largest amount
spilled – 150-gal
Plastic IBC {Corrosive Liquid, Acidic, Inorganic, N.O.S.} Load shift in transit.
NOTE: Links above are to Form 5800.1 for the described incidents.
Most Interesting Chemical: Isobutyl methacrylate,
stabilized – Isobutyl methacrylate is a colorless liquid with a flash point of
120°F. When heated to high temperatures it may release acrid smoke and fumes.
If it is subjected to heat for prolonged periods or becomes contaminated, it is
subject to polymerization. If the polymerization takes place inside a
container, the container may violently rupture. The vapors are heavier than
air. It may be irritating to skin and eyes and produce a narcotic effect. It is
used in making acrylic resins. (Source: CameoChemicals.NOAA.gov).
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