Proceedings magazine is a communication tool for the Coast Guard's Marine Safety & Security Council. Each quarterly magazine focuses on a specific theme of interest to the marine industry.
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13 Fall 2015 Proceedings www.uscg.mil/proceedings such as using LNG as a fuel in shipping and transporta- tion. Already some countries that have historically been liquefed natural gas exporters are now reducing exports to meet domestic consumption needs. Analysts project that the number of countries with import terminals will double by 2020, and global demand will double by 2030. Both higher global and domestic prices as well as greater global demand will stimulate production and export activities in the U.S. and abroad. About the author: LCDR Anthony Hillenbrand is the national technical advisor for the U.S. Coast Guard's Liquefed Gas Carrier National Center of Expertise. Previ- ous assignments include chief of investigations at MSU Portland, Oregon; marine investigations at Sector Honolulu; marine inspector at Sector Houston-Galveston; specifcation writer and type desk manager at Main- tenance and Logistics Command, Pacifc, Vessel Support Branch; and dam- age controlman frst class aboard the USCGC Decisive. Before joining the Coast Guard and graduating Offcer Candidate School in 2003, LCDR Hillenbrand was a hull maintenance technician second class in the Navy. He is a qualifed marine inspector and marine investigator and holds a B.S. in business administration (fnance and management) as well as an MBA from Hawaii Pacifc University. The explosive limit of propane is between concentrations of 2.1 and 9.5 percent. It is clean-burning and makes an excellent alternative fuel in spark-ignited engines. Propane accounts for about two per- cent of energy produced in the U.S. and is used as feedstock for propylene, which is used in plastic production. The U.S. exports about 500,000 barrels per day and Wells Fargo projects U.S. exports to grow 25 percent in the next three years. Butane: a byproduct of natural gas purifcation and crude oil refning, it is colorless, odorless, tasteless, and con- sists of four carbon and 10 hydrogen atoms. It is compressed easily into a clear liquid and is often blended with propane as an additive to LPG. Butane is a clean-burning fuel most commonly used in cigarette lighters, barbecue grills, and camping stoves. It is feedstock for iso-butane, which is used in refrigerant production and in the crude oil refning processes. Its explosive range is at concentrations between 1.8 and 8.4 percent. Like propane, butane is not a renewable resource. Pentane: a colorless liquid that has a smell similar to gasoline. It contains fve carbon and 12 hydrogen atoms. It has a boiling point of 97 degrees F and is explosive at concentrations between 1.5 and 7.8 percent. It is a byproduct of natural gas purifcation and is pri- marily used as a gasoline additive and in plastic foam manufacture. For more information: Statistics courtesy of the Liquefed Gas Carrier National Center of Expertise. Visit the website at: www.uscg.mil/hq/cg5/lgcncoe.