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ITS » Undergraduate Theses » Teknik Fisika S1 Posted by aguss at 04/01/2009 13:36:51 • 7626 Views
ANALISA TINGKAT KEBISINGAN UNTUK PENENTUAN ALAT PELINDUNG TELINGA YANG TEPAT DAN BAIK DIGUNAKAN PADA LOKASI GRINDING SECTION PA - PABRIK III PT. PETROKIMIA GRESIK PERSERO.
ANALYSIS OF NOISE LEVEL FOR THE DETERMINATION
OF GOOD AND CORRECT HEARING PROTECTION
DEVICES USED AT GRINDING SECTION PA - PABRIK
III PT. PETROKIMIA GRESIK PERSERO
Author : PRATINI, RISA
PT. Petrokimia Gresik is one of the biggest manure
producer in Indonesia which in process of its production use big
machines which generate noise especially at grinding section PA
phosphoric acid. To overcome the problem of that noise we can
giving the good and correct hearing protection devices to all
worker. Determination of hearing protection devices can be done
with calculation using method of NRR Noise Reduction Rating.
Area of Grinding section PA has maximum noise level by
overall is 106.2 dBA while minimum noise level is 93.6 dBA.
Earplug and earmuff used concurrently represent most precise choice because owning NRR equal to 2085 dB. Second alternative that is by using foam earplug with NRR equal to 1725 dB. Third alternative by using active noise reduction headsets
with NRR equal to 1507 dB. From quisioner which have been filled all worker assume the noise in place is high enough and situation in this unit longer also excelsior.
Hearing protection devices, noise, NRR, influence
Ir. Tutug Dhanardono
: RSF 620.23 Pra a
Source Undergraduate Theses, Physics Engineering, RSF 620.23 Pra a, 2008
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