| 摘要 |
PROBLEM TO BE SOLVED: To provide a scattering dust generation source determining method for efficiently determining a place of dust generation against which scattering prevention measures are taken. SOLUTION: This method comprises a first process for measuring the amount of scattering dust and wind directions at prescribed time intervals for an appropriate time period in at least two or more arbitrary measurement places A, B and C on the periphery of a multitude of dust generating places (a), (b), (c), (d), and (e), a second process for calculating the average amount of scattering dust for each wind direction according to measurement place from the amount of scattering dust and wind directions obtained in the first process, a third process for plotting a plurality of wind directions in which the average amount of scattering dust is large centering around each measurement place on a map including the plurality of generating places (a) to (e), and the measurement places A to C, and a fourth process for determining, as the generation source of scattering dust, a place of dust generation where intersection points are positioned and met by the wind directions from the respective measurement places plotted in the third process, or a place of dust generation on a map existing in a wind direction if wind directions from the respective measurement places substantially agree with each other. COPYRIGHT: (C)2004,JPO
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