Accident prevention 3 Accidents 3 Energy efficiency 3 Floodings 3 Floods 3 Heavy equipment 3 Industrial sites 3 Industrial wireless sensor network 3 Industrial wireless sensors 3 K-means clustering 3 K-means++ clustering 3 Large-scales 3 Local flooding 3 Multicasting 3 Onsite safety system 3 Wireless sensor networks 3 Workers' 3 industrial wireless sensor networks (IWSNs) 3 k-means clustering 3 local flooding 3 multicasting 3 onsite safety system 3