NOISE OF WORK IN THE CAR GARAGE, SOMDET MUNICIPALITY, KALASIN PROVINCE

Abstract

The objectives of this research were to measure the noise of work in the car garage and compare with the standard, to compare the noise of work in the large and small car garage and to study the effect of the noise on the employees. The measure of noise used the sound level meter. The measurement used the method of the noise of work in accordance with the standards of ministerial regulations in the management of occupational safety, health and working environment concerning heat, light and sound (B.E.2549).
The results of the study are as follows. The large and small garage had time weighted average (TWA) as 75.75 ± 2.70 dB(A) and 78.50 ± 1.38 dB(A) respectively, impulse noise as 116.87 ± 4.49 dB(C) and 116.75 ± 5.13 dB(C) respectively. The comparison of TWA and impulse noise to the standard which is not over 85 dB(A) and 140 dB(C) respectively. The comparison TWA between the large and small car garage using t - test independent at 0.05 of significant founded that p-value < 0.05. The results indicated that the small car garage had TWA rather than the large car garage. The results of interview in the large and small car garage founded that the noise caused by the operation affects the hearing efficiency, communication during working and the mental state of the employees. Keywords: Noise of Work, Car Garage, Noise Effect