International Journal of Innovative Technology and Exploring Engineering (IJITEE) ISSN: 2278-3075, Volume-9 Issue-1, November 2019 4776 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Retrieval Number: A4781119119/2019©BEIESP DOI: 10.35940/ijitee.A4781.119119 Abstract: Noise is one of the industrial hygiene agents of greatest concern, which explains the large amount of regulations and literature that attempt to reduce it. In most industries in Peru and the world the welding process is indispensable as part of their production process, nevertheless this activity involves several risks for people, not only for those who perform the activity but also those who are adjacent to it, within these risks, exposure to high levels of noise is one of the most difficult to control because the control at the source of noise is almost, one of the great passive controls in noise reduction is the use of screens or acoustic curtains. It is for this reason that the objective of this article is to propose a design of acoustic barriers through screens, responding to the problem of noise generated in welding workshops. The stages in the process of designing acoustic screens for a welding plant are presented in chronological order. Keywords : Acoustic Screen, Noise, Sound Level, Welding plant. I. INTRODUCTION After the industrial revolution, industrial processes are increasingly common, whether in urban or rural areas. However, industries have caused environmental damage to soil, water and rivers [1]. As well as large generators of noise, emitting excessive noises that affect the health of workers and individuals in the surrounding area [2]. Various studies have been conducted to have more information about this phenomenon; demonstrating that chronic exposure to heavy noise for several consecutive hours causes workers to develop a hearing impairment, which results in total hearing loss [3] [4]. This is because continuous or repetitive exposure to high auditory frequencies easily and progressively destroys the cells and nerves of the inner ear. If there is a sufficient number of cells and nerves destroyed, there will be permanent hearing loss [5]. However, while hearing loss is the most common and probably the most serious harmful effect, it is not the only consequence of industrial noise. Other harmful effects Revised Manuscript Received on November 08, 2019 * Correspondence Author Alexi Delgado*, Department of Engineering, Mining Engineering Section, Pontificia Universidad Católica del Perú, Lima, Peru. Areli Luyo, Mario Moreno, Environmental Engineering Faculty, Universidad Nacional de Ingeniería, Lima, Peru. Chiara Carbajal, Administration Program, Universidad de Ciencias y Humanidades, Lima, Peru. include tinnitus (ringing in the ears), interference with oral communication and the perception of alarm signals, disturbances in work performance, discomfort and extra-auditory effects [6]. It is also responsible for physiological and psychological transformations in the organism that manifests itself in a direct effect on quality of life and behavior [7]. In conclusion, noise not only causes alterations in the auditory apparatus, but also acts on the bulbar centers, vegetative centers, and cortical centers of association and will [8]. And while the high noise levels generated by welding work (peaks of up to 102.8 dB) are meant to be mitigated by the use of EPP earplugs (disposable earplugs of NRR 33dB - auditory adjustment) - whether made disposable by the company or the workers themselves - the discomfort and stress caused by this agent affects workers in the surrounding areas, deteriorating their health indirectly [9]. Therefore, it is crucial to think of other ways of controlling noise or, in other words, the different actions that are taken to combat noise, tackling it from any of its three propagation phases: actions at the source of the noise, in the transmission phase, or acting on the receiver [10]. Generally, when it comes to combating noise generated by the machinery, the most commonly adopted solutions are those that address the problem at the source of the noise, but what to do when the characteristics of the task do not allow the encapsulation of the machinery [11]. In this report, the design of a method of acoustic insulation of noise through screens, which are defined as devices formed by continuous walls, interposing between the noise source and the receiver, is discussed. In them, the sound is reflected mainly to the emitting source; nevertheless, part of the energy is transmitted through the barrier, and great part of it is diffracted by the edge of the same one, being the use of these screens generally used for the reduction of the traffic noise and sometimes as solutions of industrial [12] . It is worth mentioning that the effect of a screen is not very significant for frequencies whose wavelength exceeds the width or height of the screen. Therefore, a frequency study is needed before deciding to build such an artifact. II. METHODOLOGY Acoustic screens produce a noise attenuation effect in the receiver area. This attenuation depends fundamentally on the dimensions of the screen, which determine the amount of direct and diffracted sound energy [13]. The efficiency in relation to the transmission of noise is given by the isolation capacity of the screen, which, besides its dimensions, depends on the construction material, as Acoustic Insulation Design of Noise in Welding Plant through Screens Alexi Delgado, Areli Luyo, Mario Moreno, Chiara Carbajal