| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel supply system capable of detecting only abnormality in an oil injection system that water is mixed into a fuel from outside abruptly with high sensitivity and high accuracy.SOLUTION: A control device 30 provided in an oiling system 1 determines whether a count value indicating the number of times of oiling work and/or an integrated quantity of fed oil exceeds a preset predetermined number of times and/or a preset predetermined quantity, and determines by a detection signal indicating that water of a predetermined quantity at a water level Hor a water quantity Qis accumulated in a water accumulation unit 58 that water deriving from abnormality in the oil injection system 1 and entering an underground tank 42 or an underground pipe 41 between the tank 42 and the oiling system 1 due to corrosion of the tank 42, corrosion of the pipe 41 or the like if the count value and/or the integrated quantity of fed oil exceeds the preset predetermined number of times and/or the preset predetermined quantity. |
