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APPLICATION OF GIS IN ELECTRICITY SAFETY MEASURES IN CHEVY VIEW ESTATE, ETI-OSA LGA, LAGOS STATE
Usman R. M., Amusa I. A.*, Ali P. O., Ahmed I. and Akintuyi O. B.
The study used GIS methods to apply laws regarding safety of residents in Chevy View Estate, Eti-Osa Local Government Area of Lagos State regarding compliance to the setbacks to electricity utilities to prevent injuries or deaths from transformers’ explosions and electrocutions. The study adopted vector data model. The electric poles, transformers (33KV/415V) and the customers’ locations were modelled as points, the various lines carrying current were polylines while the buildings and the study area boundary were polygons. The design and creation of a spatial database were carried out. The data were both primary and secondary data types. The primary data were the ones collected with use of handheld GPS (Transformers, Poles and Customers’ locations) while the secondary data (attributes of the Transformers, Poles and Customers locations) were from the Eko Distribution Company, Lekki. The image from where the buildings and roads were digitized was downloaded from Google Earth Pro online and georeferenced. The analyses carried out included spatial query, buffering to indicate those buildings within the setbacks to the electric poles, transformers and high tension lines at 6.0m, 30.0m and 9.0m respectively. A total of 188, 131 and 111 buildings were within the setbacks of electric poles, transformers and high tension lines respectively. The overlay (selection by location, selection by attributes) was used to intersect the buffered layers with the building layer to get the buildings intersecting the buffered zones. The aim and objectives were achieved and recommendations made.[Full Text Article]