response strategies for ethanol and blended fuels
Post on 30-Dec-2015
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DESCRIPTIONResponse Strategies For Ethanol and Blended Fuels. Presented by Bobby Breed Specialized Response Solutions Response Contractor for Shell and Motiva. Incident Considerations. Knowledge of Products involved Knowledge of container carrying product - PowerPoint PPT Presentation
Response Strategies For Ethanol and Blended FuelsPresented by Bobby BreedSpecialized Response SolutionsResponse Contractor for Shell and Motiva
Incident ConsiderationsKnowledge of Products involvedKnowledge of container carrying productIdentify sensitive receptors and critical structures around sceneUnderstanding ICS and Unified CommandWork to provide value to the outcome and rapid resolution of the incident
Arrival on Scene
Ethanol Properties:Fire hazard greatest threat.Largest volume flammable liquid in rail and highway transit becoming more prevalent in barges and water transitCompletely miscible in water
Ethanol Properties (continued):
Ethanol Blended FuelsEthanol blends such as E-95, E-85, and various blends of Gasohol reduce the total consumption of gasoline and therefore it is understandable, that in transit this reduction in total volume of gasoline reduces the environmental impact proportionately to the blends ratio of ethanol.
Open Water ResponseGasoline film formed on the water surface as a result of ethanol/gasoline blend spill can be treated as pure gasoline spill. Environmental impacts of dissolved ethanol can be reduced by introducing additional volume of clean water (if possible) and increasing water mixing (aeration). Monitoring and sampling of ethanol plume will be a most likely response scenario.
Ground Water SpillIn ground water, the abiotic mechanisms for the attenuation including sorption, volatilization, and abiotic degradation will not contribute substantially to the decreased mobility or loss of ethanol in aquifers. Therefore, the fate and transport of ethanol will primarily be controlled by biodegradation and dilution.
Ground Water CleanupIn case of underground spill of ethanol/gasoline blend, cleanup strategies that stimulate biodegradation under anaerobic conditions should be considered.The most common engineered bioremediation approaches used for cleanup are aerobic, introducing oxygen to stimulate biodegradation. Applying sufficient oxygen to meet the high oxygen demand exerted by ethanol will likely be technically difficult and prohibitively expensive.
Open Water SpillStandard gasoline and water are almost completely immiscible. Ethanol is infinitely miscible with water. Ethanol/gasoline blend released in an aquatic system will rapidly partition leaving hydrocarbon film on the water surface and ethanol dissolving in the water column. In a high-energy environment ethanol may act as a weak surfactant and facilitate dispersion of hydrocarbons into water column. Ethanol can be toxic to aquatic life at high concentrations.
Ethanol and Blended FuelsEthanol is degradable and can be stripped from static water columns as well as porous soil regions.Rapid implementation of an aeration strategy is successful in dealing with elevated chemical oxygen demand (COD) and biological oxygen demand (BOD) in bodies of water.
Scene Size-up Continued
Additional Scene Photos
What is our Plan? What do you see as the incident priorities?Should the fire or potential fire issue be addressed at this point?Can we extinguish some and let some burn?Does the Fire Department have the proper equipment and foam to effectively fight this fire?
What can be done?
From below the bridge
Burning ground under bridge
Cars on top of abutment
Producers SupportWhat resources are needed from the Producer?What role does the producer play in the ICS system? Liaison? Technical Specialist?Product knowledge that the producer can provide can be the difference in the incident.
Burning car on top of Bridge
Firefighting ConsiderationsFoam? What kind, and how much? Alcohol Resistant Foam is required.Surgical application a mustPre-cooling of vessel and post-cooling the key to successful extinguishment.Less than 5 gallons of AR/AFFF used to extinguish fires in each railcar.
Tear in car on top of bridge
The Morning After
Regulatory discussionWhat environmental issues do you see with this incident?What are the priorities?What impact to the river can be expected?How would this differ in a still body of water and how can it be mitigated quickly?
Day-time Firefighting Ops
Extinguish car on bridge
Specifications1500 gallons per minute pumping550 gallons AR/AFFF20,000 portable water storageMultiple pumping configurationsHand lines and eductors for surgical application of foam
Ethanol and Blended Fuels IncidentsQuestions and Comments
Bobby Breed (877) 506-0025