جعفر بشارتی

Consideration to time constraints, implementation and funding in each industry, one of the essential strategies for managing noise control and selection the best method is to prioritize noise control methods. The aim of this study was to Prioritizing of Noise Control Methods in the battery making industry by the Analytical Hierarchy Process (AHP).

The present study was a descriptive-analytical cross-sectional study.After measurement of sound pressure level and identifying the main sources of noise pollution, Content validity index (CVI) and content validity ratio (CVR) were used to sieve the criteria and methods of noise control. Prioritization of noise control methods based on the study criteria was done by calculating the relative weight of each of them by two factors of Eigenvalue and eigenvector.

The results of the study showed that the inconsistency ratio(IR) in pairwise comparisons was less than )10%( in all cases and the consistency of the answers was confirmed. Based on the results, among the study criteria, the acoustic efficiency criterion of method with weight(0.1810), and Among the proposed methods of noise control, the method of controlling the exposure time to noise and training of workers with weight(0.1732) had the highest priority.

Findings showed that in the studied battery making industry, the best criterion in noise control is the safety of the noise control device. Also based on the results, controlling the duration of exposure time to noise and training workers in conditions of high noise exposure was the best method to noise control in the battery making.

Today's macro-organizational policies and decisions are significantly associated with the safety management system, therefore, any organizational intervention may lead to a change in the trend of factors affecting accident indicator. In current research, Spastic policy on the human resources on trend of accident indicator in two industries in the field of battery making in a five year period has been scrutinized.
In this study, The five-year study to compare the two events Index Industry Standard battery, according to OSHA 1904, statistical information required from 1389 to 1393 were collected , then, the indicators in industries were determined. In the next step, through an interview with experts in two industries, the impact of organizational policy making was examined and by using SPSS 20 software Indices of industrial accidents in terms of division and significant correlation in the years using chi-square test and comparison test was evaluated and its association with reduced manpower was analyzed.
Analysis of information indicated that the rate of accident indicator in both industries in 1392 was the least and in 1393 was the most, and ratio of number of accidents to number of employees in two industries since 1389 to 1392 was significant and P value was respectively 1389 (P value =0.002), 1390(P value =0.000), 1391(P value=0.004) and 1392(P value =0.011). Factors such as spastic policies regarding human resources, allocation of specific budgets to HSE and contraction outsourcing of production processes are among the policy making strategies that lead to change in trend of accident indicators.
Results of this study showed that reduction or increase in accident indicators are considerably related to human resources policy Spastic making.