Petrogram - Fall 2008 - (Page 36)
FEATURE What Owners Marshall T. Mott-Smith, president, Mott-Smith Consulting Group, LLC Should Know Ethanol Storage in Underground and Aboveground Storage Systems is offered as advice to owners of petroleum marketing facilities and things to consider for protecting storage tank systems. he increasing use and promotion of ethanol has frequently been in the news in the past several months, particularly with the rising costs of unleaded gasoline. Governor Crist strongly supports ethanol and has initiated efforts to increase its use in Florida. Proponents laud its clean burning characteristics and the savings realized from not having to import foreign oil or gasoline. Opponents are calling for prohibiting its use as a fuel because of production costs, competition with food crops and increasing costs for other T General Information A call for the increase in the use and production of ethanol was included in legislation as part of the U.S. Energy Policy Act of 1992 and the Energy Act of 2005. Ethanol reduces our reliance on foreign oil, is good for the environment, improves air emissions and can improve octane levels. It is sold in two main forms: E10 and E85. It can be used in any vehicle or small engine that uses conventional gasoline fuels, and it is used as a fuel extender and octane improver with blends that are usually 10 percent ethanol and 90 percent unleaded gasoline. There is a growing shift to E85, which is usually in concentrations of 75–85 percent ethanol and 25–15 percent unleaded gasoline. While ethanol promotes more complete combustion, it has a lower energy ratio than gas, and it decreases fuel economy by 1–3 percent. It acts as a solvent as it is very soluble in water. However, E85 can only be used in “ﬂex-vehicles” that are designed and manufactured to use E85. Ethanol reduces our reliance on foreign oil, is good for the environment, improves air emissions and can improve octane levels. products that rely on corn, such as the distilled spirits industry, the poultry industry and breakfast cereals. These merits and faults will not be the issue of this article. The reality is that ethanol use will increase in Florida, not just as E10, but as E85. The following 36 | Petrogram Specific Issues Associated With E10 in Existing Underground Storage Tank Systems E10 can have a potential adverse eﬀect on existing underground storage tank systems because of phase separation (mixing with water), an increased potential for internal corrosion and problems with permeability, compatibility and solvent action. In addition, older seals or gaskets may need to be replaced. Phase separation with E10 causes two liquid layers to form in the tank. The lower layer contains water and ethanol, and the upper layer www.fpma.org | Fall 2008
Table of Contents for the Digital Edition of Petrogram - Fall 2008
Petrogram - Fall 2008
Welcome, New Board Members
Getting the Message Out There
Spotlight on FPMA's 2008 Convention & Trade Show!
Out & About the Industry
Alcohol Beverages & Tobacco Regulation: Questions and Answers
Hedging 101: Part II
What Owners Should Know
The Price-Gouging Statute
Conference of Committees Registration Form
Index of Advertisers
Petrogram - Fall 2008
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