| 摘要 |
PROBLEM TO BE SOLVED: To provide an unloading system of a fueling station capable of daily and automatically determining whether or not an oil level meter fails. SOLUTION: The unloading system of a fueling station includes a first calculation means for calculating a residual quantity of fuel oil in an underground tank L<SB>i</SB>based on a signal from an oil level detector 6a, a second calculation means for calculating an unloadable quantity from the acquired residual quantity of the fuel oil, a communication means for transmitting the unloadable quantity to the tank L<SB>i</SB>, a third calculation means for calculating an accumulated fuel supply value corresponding to change in the residual quantity of the oil in the tank L<SB>i</SB>based on a fuel supply quantity of the oil pumped up from the tank L<SB>i</SB>and fed via a metering machine, and a determination means for comparing the change in the residual quantity with the accumulated fuel supply value and determining that the oil level detector fails when a deviation between the two values is larger than a predetermined range. COPYRIGHT: (C)2007,JPO&INPIT
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