Determination of unsafe distance of sound levels from a 65 kVA non-sound proof electric power generator

No matter the power rating of a non-sound-proof electric power generator, it can generate sound that adversely affects residents if proper control measures are not implemented. This work presents the determination of unsafe distance of sound levels from a 65 kVA non-sound proof electric power generator for a better environment. All sound levels were measured using a sound level meter while, a distance, x of 5m interval from the generator was maintained using a measuring tape. The background sound levels, LBs were taken when the generator was switched off while, the average sound levels, LAvs were measured when the generator was switched on. The generator sound levels, LGs were calculated from the average and background sound levels. Finally, the data obtained were compared with the World Health Organization, (WHO) safety standards. The results showed that LAv and LG were not strongly correlated with LB. Here, a linear regression model of a plot of LAv against LB had a coefficient of determination, R2 = 0.069 while that of a plot of LG against LB had a coefficient of determination, R2=0.068. The results revealed that the adverse effects of the generator were beyond a distance of 65 m from it. This is because at x = 65 m, the generator sound level LG = 56.9 dBA which was greater than 55 dBA (WHO standard). It is recommended that a 65 kVA power generator of this type be installed from a distance of 70 m in residential areas.