Final Rule

Hazardous Materials: Improving the Safety of Railroad Tank Car Transportation of Hazardous Materials

  • 13
  • Jan
  • 2009
DOCKET NUMBER: 2006-25169
SUBJECT: Hazardous Materials
KEYWORDS: PHMSA, Pipeline and Hazardous Materials Safety Administration, PIH, Poisonous-by-inhalation Hazardous Materials, TIH, Toxic-by-inhalation Hazardous Materials
ABSTRACT: The Pipeline and Hazardous Materials Safety Administration (PHMSA), in coordination with the Federal Railroad Administration (FRA), is amending the Hazardous Materials Regulations to prescribe enhanced safety measures for rail transportation of poison inhalation hazard (PIH) materials, including interim design standards for railroad tank cars. Pending validation and implementation of the crashworthiness performance standard proposed in the NPRM issued under this docket on April 1, 2008, the rule mandates commodity-specific improvements in safety features and design standards for newly manufactured DOT specification tank cars. The rule also adopts a 50 mph speed restriction for loaded rail tank cars transporting PIH materials; an improved top fittings performance standard; an allowance to increase the gross weight of tank cars that meet the enhanced standards; and adoption of the industry standard for normalized steel in certain tank cars. The interim standards established in this rule will enhance the accide
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