Railway Tank Car Upgrades | Rail Tank Car Safety
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Railway Tank Car Upgrades | Rail Tank Car Safety

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According to the Association of American Railroad (AAR), of the 228,000 DOT-111 (non-pressurized) tank cars, 92,000 are being used to move flammable liquids such as crude and ethanol around the U.S. ...

According to the Association of American Railroad (AAR), of the 228,000 DOT-111 (non-pressurized) tank cars, 92,000 are being used to move flammable liquids such as crude and ethanol around the U.S. In purely crude terms, this equated to approximately 425,000 carloads in 2013.
The illustration below highlights the six major areas of change as suggested by the AAR. In red is the manway, the principal cause of leakages. Although not a major concern in the event of derailments, the manway is responsible for over 50% of all non-accident releases (NARs). See the video after slide one for a more in depth explanation of why they continue to fail and how this can be simply corrected.
Read more about manway gaskets at parker.com/iss

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Railway Tank Car Upgrades | Rail Tank Car Safety Presentation Transcript

  • 1. 1 & 2 MANWAY No Changes – leading cause (>50%) of all NARs Current Standard Latest Proposal 1 HIGH CAPACITY PRESSURE RELIEF VALVE No Requirement Requires a high capacity relief valve protect against a rise in internal pressure resulting from fire and to then quickly release product 2 TOP FITTINGS PROTECTION Protect integrity of valves and fittings used in loading in event of accident No change 3 HEAD SHIELDS ½ inch thick/ half height head shields on either end to improve puncture resistance ½ inch thick/ full-height on either end 4 STEEL TANK ½ inch thickness for unjacketed cars 7/16 inch thickness for jacketed cars Minimum 9/16 inch thick steel tank 5 BOTTOM OUTLET HANDLES No requirement Reconfigured to prevent handle from opening outlet valves in event of accident 6 JACKET AND THERMAL PROTECTION Minimum ½ inch thick steel tank OR 1/8 inch thick steel jacket Minimum 9/16 inch thick steel tank PROPOSED AAR DOT-111 RAILWAY TANK CAR UPGRADES 43 5 6 Copyright Parker Hannifin 2014