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United States Department of Transportation United States Department of Transportation

Advising all persons involved in loading and unloading products from railroad tank cars that they cannot rely on internal excess flow valves to stop the flow of product except under the limited conditions for which these valves were designed and installed

Document Series
Safety Advisories
Safety Advisory Number
Subject Hazardous Materials
Hazardous Materials; railroad tank car; hazardous material;� tank car excess flow; NTSB

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Published Date: Thursday, September 4, 2003