Assessment Of Indoor Noise Level In Some Factories Of Industrial Areas Of Jammu,(J&k),India Rajkumar Rampal and Arpana Duggal Abstract: The present study has been carried to assess Equivalent noise level (Leq),Noise climate(NC),Traffic noise index(TNI) for an interval of 30 seconds in a period of 10 minutes both during working and non-working hours at twelve factories of industrial areas of Jammu.The average Leq during working hours was found to be above permissible limits prescribed by CPCB. Keywords: Equivalent noise level (Leq), Industrial area, Noise, Noise climate(NC), Traffic noise index(TNI) INTRODUCTION The cultural revolutions have made available to us much more energy and new technologies with which to alter and control more of the planet to meet our basic needs and increasing desires. The new machines and technologies in turn led to a switch from small-scale, localized production of handmade goods to large –scale production of machine-made goods in factories within rapidly growing industrial cities. Establishment of Small and Medium scale industries in and around cities, increasing population of Automobiles and Deforestation and clearing of Urban Greenland in the name of human development has degraded environment. In the beginning of the 20 th Century, the slogan was „develop or perish‟, and today it is proving like „develop and perish‟. Noise has been defined as any audible acoustic energy that adversely affects the physiological or psychological well being of the people [Kryter, 1985]. Noise has become a very important “Stress Factor” in the environment of man [Park, Park, 1993].Prevalence of noise is implicated in various illness of human and it is responsible for increased morbidity associated with modern life style. Immediate and serious attention must be given to control this mushrooming problem, since the overall loudness of environmental noise is doubling every ten years [Chedd, 1970]. This has encouraged scientists to discuss and study the effects of noise pollution on human‟s health. The Federal Occupational Safety and Health Act (OSHA) administrated by the U.S. Department of Labour, requires the specified noise exposures not be exceeded. Excessive noise International Journal of Engineering Research & Technology (IJERT) Vol. 2 Issue 4, April - 2013 ISSN: 2278-0181 www.ijert.org 1035