To perform efficient fire fighting while detecting the presence/absence of fire-fighting cover.

A fire source 7 is detected from multiple directions while overlapping monitoring ranges S1, S2 and S3 of plural flame sensors A, B and C, the presence/absence of any shielding 6 is judged by calculating the detection output levels of the respective flame sensors, and drainage guns 5a and 5b are controlled. Thus, when there is no shielding, respective fire-fighting means are driven toward the fire source but when there is any shielding, the fire- fighting direction in that direction is not driven and fire fighting is started by driving the other fire fighting enable fire-fighting means.