Evaluation of Individual and Environmental Sound Pressure Level and Drawing Noise-Isosonic Maps using Surfer V.14 and Noise at Work V.5.0

Noise pollution is one of the common physical harmful factors in many work environments. The current study aimed to assess personal and environmental sound pressure level project sound-Isosonic map Razavi Khorasan Paste manufacture using Surfer V.14 at V.5.0. This cross-sectional, descriptive analytical that was conducted 2018 factory contains Canister, production Brewing unit. Following ISO 9612:2009, Casella Cel-320 used measure level, while CEL-450 meter (manufactured by Casella-Cel, UK) employed level. Statistical analyzes done SPSS V.18 Linear Regression test. sound-isosonic maps were projected V. 14 results assessing indicated highest received dose (172.21%) equivalent (87.36 dBA) recorded for workers Canister According measuring out 16 measurement stations this unit, overall 87.5% regarded as danger caution areas. lowest levels units 61 dBA 92 belong respectively. Results indicate Over 75% had a greater than 85 these two most dangerous area terms noise pollution. It therefore necessary implement control measures, apply hearing protection program auditory tests among units.