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- June 1991
-
-
- POLICE PRACTICES:
- ALTERNATE FUEL PROGRAM
-
-
- During the late 1970s, as the price of gasoline escalated
- and gas lines formed, the Sarasota County Sheriff's Department
- searched for an alternate fuel source to use in the department's
- fleet. Among other considerations, it was important to find a
- fuel that was clean burning. Because each car in the
- department's fleet logged over 86,000 miles per year, the cost
- of repairs and rebuilding was significant, and officials hoped a
- cleaner burning fuel would reduce these costs.
-
- After considering all the alternatives, department officials
- chose to convert its fleet to liquid propane gas use, because it
- met the following criteria:
-
- * It is readily available.
-
- * It produces yearly savings on fuel costs.
-
- * It burns cleaner, causing fewer cases of engine failure
- and need for replacement parts.
-
- * It is not affected by fluctuating oil prices or
- worldwide supply.
-
- THE CONVERSION
-
- When officials purchase a new car for the departments
- fleet, mechanics assigned to the in-house fleet garage remove
- the carburetor, the air cleaner, and the fuel pump and fuel
- line. (These parts are placed in storage until the department
- is ready to sell the car, at which time the original equipment
- is replaced.) Mechanics then put a new liquid propane gas
- carburetor and air cleaning device on the car, as well as a fuel
- lock off and converter. Last, they place a propane gas tank in
- the trunk of the car and make all the necessary connections.
-
- The initial cost to convert a car, using new equipment, is
- approximately $1,000, plus the cost of the mechanics labor.
- However, since some of the parts, such as the liquid propane gas
- tanks (which cost approximately $415) can be transferred to
- other cars, the cost of converting any replacement cars is less.
-
- REFUELING
-
- Department officials solicit bids each year from the
- distributors of propane gas, and the lowest bid is accepted.
- However, any distributor considered must also agree to be on
- 24-hour call and must agree to provide supply trucks to respond
- to department cars that run out of fuel while on patrol during
- major catastrophes, such as hurricanes or tornadoes.
-
- The first vendor to supply the department with propane gas
- gave a 20-minute lesson on how to refuel safely, with an
- emphasis on how to bleed the valves on the car tanks. Now,
- experienced officers teach this simple technique and safety
- procedures to new officers.
-
- Officers refuel their vehicles at large propane gas storage
- tanks that are located at three refueling sites around the
- county. Should officers accidently drive off with the storage
- tank hose still connected to their tank, there are automatic
- shut-off valves on both the storage tanks and the tanks of the
- cars to prevent the escape of gas.
-
- Refueling department cars that are used on road trips may
- present more of a problem because liquid propane gas is not
- available at all service stations. However, recently, officers
- drove a department vehicle on a 2,000-mile road trip, and they
- experienced no difficulty in finding fuel. Many service
- stations and campgrounds sell liquid propane gas. There is also
- a directory available from the National Liquid Propane Gas
- Association that lists, by State, many sources of liquid propane
- gas.
-
- RESULTS
-
- During the past 11 years, over 200 vehicles used by the
- department have operated on liquid propane gas, including
- unmarked units used by the civil, warrants, and administrative
- sections. Overall maintenance costs are considerably less than
- they would be if gasoline were used in the units. The department
- saves approximately $1,000 per year on the fuel costs of each
- vehicle, and the longevity of the engine has been increased.
-
- Some departments replace patrol cars at 80,000 miles or
- less, but by using liquid propane gas, which does not leave
- carbon deposits in the engine, most vehicles will not need to be
- replaced until they register approximately 160,000 miles. In a
- department such as the Sarasota County Sheriffs Department, which
- has a one person, one patrol car concept, converting to an
- alternate fuel has resulted in a great savings.
-
- CONCLUSION
-
- In this time of shrinking budgets and increasing costs,
- every department should look for cost-saving programs. For
- departments that have large fleets of department vehicles, using
- an alternate fuel, such as liquid propane gas, may be a viable
- way to save money. When this reduction in costs is combined with
- the increased engine longevity found in vehicles using liquid
- propane gas, the substantial savings realized may allow
- departments to pursue other important programs they have
- previously been unable to afford.
-
- For further information or assistance on using liquid
- propane gas as an alternate fuel, contact the Sarasota County
- Sheriffs Department Office of Fleet Management, P.O. Box 4115,
- Sarasota, Florida 34230, (813) 951-5597.
-
-
- The information for this column was submitted by Lt. Bill
- Stookey, Sarasota County, Florida, Sheriff's Department.