Marine Highway Transport of Toxic Inhalation Hazard Materials (2012) / Chapter Skim
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Pages 13-18
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From page 13... ...
13 Public Safety Statistically, the United States has achieved an excellent safety record for the transport of hazardous materials by all modes. Because releases are so rare, it is often difficult to demonstrate statistically that one mode is inherently less prone to accidents than another.
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14 release. Once TIH material is vented, responders can remove the population from the exposure but can do little to speed the natural dissipation through atmospheric pressure and wind (32)
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15 Red Deer, Alberta At approximately 8:23 p.m. on February 2, 2001, Canadian Pacific Railway train CP 966-02 was being prepared for departure in the Red Deer Yard.
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16 and salinity. A concentration of nonionized NH3 greater than 1.25 ppm can be toxic to some freshwater fish.
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17 gas is heavier than air, a chlorine gas cloud would remain low to the ground. Movement and dissipation of the gas cloud would be determined by such factors as the release volume, type of release, terrain, topography, temperature, humidity, atmospheric stability, and wind speed and direction.
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From page 18... ...
18 Shippers of chlorine and other highly toxic gases have said they think railroads will target them with sharply higher freight rates to offset positive train control (PTC) costs required by recent regulations.
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