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Severe storms and bulk chemical storage
John H Pardue, LSU
Environmental Impacts of Katrina
Louisiana Water Resources Research Institute Hazardous Substance Research Center SSPEED Center
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Structural……Non-structural…….Urban Planning
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Outline
• Katrina chemical spills • Mechanisms of hurricane-induced spills • Hurricane Isaac and Stolthaven • Possible solutions
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Chevron Empire facility
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Bass Enterprises
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Meraux, LA Murphy Oil
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Outline
• Katrina spills • Mechanisms of hurricane-induced spills • Hurricane Isaac and Stolthaven • Possible solutions
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Common failure mechanism
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Secondary Containment Regulations
• Designed or operated to contain 100% of the capacity of the largest tank within its boundary.
• Designed or operated to prevent run-on or infiltration of precipitation into the secondary containment system unless the collection system has sufficient excess capacity to contain run-on or infiltration. Such additional capacity must be sufficient to contain precipitation from a 25-year, 24-hour rainfall event.
• Free of cracks or gaps. • Designed and installed to surround the tank completely and
to cover all surroundings likely to come into contact with the waste if the waste is released from the tank(s) (i.e., capable of preventing lateral as well as vertical migration of the waste)
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Meraux Oil Spill (Murphy Refinery, 2005)
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Outline
• Katrina spills • Mechanisms of hurricane-induced spills • Hurricane Isaac and Stolthaven • Possible solutions
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methyl acrylate, octene, styrene, formic acid and monochlorobenzene
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• 68 storage tanks were in service on the terminal before the storm.
• 14 tanks and piping systems were damaged. • Several of the tanks have lost product. The containment
system around the tanks captured much of this and protective booms were placed around the tanks and the entire terminal to collect any spilled product and keep it contained within the terminal.
• 142 railcars were derailed by the storm. All of those rail cars
have been rerailed, and are being inspected and repaired.
Stolthaven impacts
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Outline
• Katrina spills • Mechanisms of hurricane-induced spills • Hurricane Isaac and Stolthaven • Possible solutions
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Possible solutions
• Determine worst case scenarios and educate first responders
• Develop structural solutions to common failure mechanisms
• Improve reporting and assessment post-spill
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Table 2.5. Time for total evaporation of gasoline (minutes).
Slick Height (mm)
Wind Speed (m/s) .1 .25 .5 1 1.5 2.0 5.0 10.0 20.0
1 18.3 17.4 16.1 14.0 12.4 11.2 7.2 5.2 3.2 2 35.9 34.1 31.5 27.3 24.1 21.6 13.4 8.5 5.4 3 53.5 50.8 46.9 40.5 35.8 32.0 19.7 12.3 7.3 4 71.2 67.5 62.2 53.8 47.4 42.4 26.1 16.1 9.3 5 88.8 84.2 77.6 67.1 59.1 52.9 32.4 19.9 11.5
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Possible solutions
• Determine worst case scenarios and educate first responders
• Develop structural solutions to common failure mechanisms
• Improve reporting and assessment post-spill
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Surge
drainage
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Possible solutions
• Determine worst case scenarios and educate first responders
• Develop structural solutions to common failure mechanisms
• Improve reporting and assessment post-spill
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Questions?