survey and analysis of noise pollution in the bidboland gas refinery

we investigated the issue of noise pollution in the bidboland gas refineryby noise measurement and surveys. the bidboland gas refinery has several process units.the sound pressure levels were measured at several places, such as units of 200, 300,400, 500, boiler, powerhouse area, cooling towers pumps, and maintenance area, and thecorresponding noise maps were produced by using sound plan software. we identified thesources of noise pollution. we first measured the mean a-weighted sound pressure levelin each study unit and analyzed the obtained data in microsoft excel. the noisiest unitswere identified and some suggestions were offered to reduce the sound exposure level. itwas specifically noted through the surveys that the noise levels detected in all testedindustries was much above 80 dba limit specified by regulations. in lieu, variousmeasures to control the noise pollution were contemplated and discussed.