مجله مهندسی بهداشت حرفه ای
سال چهارم شماره 1 (بهار 1396)

Today, with development of technology and the important role of human resources in the workplace serious attention is paid to the important role of HSE management that has a significant impact in immunization of workplace.In the past decade, the organization's and researcher's attention have been increased in studying and applying the EFQM model. This model provides a comprehensive and non-prescription framework for self-assessment Therefore in this regard, the Technical Research Center for safety and health protectionas the custodians of the work safety training in the country has spread the HSE management training; so through this way it is attempted to evaluate the efficiency of mentioned tenures in applying the HSE management system in country's industry using the EFQM organizational excellence model.
The present study was a cross-sectional descriptive study and the target population studied, include students participating in HSE management training courses the target population in this study, includes 280 subjects and Using Cochran formula with a confidence level of 95%, the number of samples generated became 113 people. The Collection tool based on the EFQM model indices; lead to designing a questionnaire whose validity was confirmed by 10 professors and also to determine its reliability. The provided questionnaires were given to samples based on Likert scale before holding period and also after the mentioned period
After the project it was found that, the population included 65.5% men and 34.5% women with the education of 6.2% Diploma, 77% B.A. and 15.9% M.A and 0.9% P.H.D. and then the gathered information were entered into SPSS software (v.21) and were investigated using the Descriptive and analytical chi-square tests and Spearman correlation coefficient at the significant level of 0.05.
Dicusion: The results showed that the HSE MS courses held by the mentioned center have a significant impact in applying the HSE management system in country's industry.

Musculoskeletal disorders are the most common occupational diseases and, to prevent these disorders, it is important to survey and recognition the significant factors underlying. This study has been made by tow object, the primary objective was to determine the prevalence of musculoskeletal disorders in the steel industry and, the conclusive goal was to examine the relationship between work-family conflict as social factors and musculoskeletal disorders.
This study was conducted in one of the country's steel industry in the steel sector with a research population of 270 workers. To study work-family conflict was used 18-item questionnaire Carlson and Kakmar that this questionnaire survey the six sub-scales of this type of conflict in two dimensions and, musculoskeletal disorders were assessed by using a Nordic questionnaire. In the end, the results were analyzed with SPSS 21.0 software.
The mean score (SD) for the entire study population of work-family conflict is 50.30 (12.352). The relationship between work-family conflict and musculoskeletal disorders shows that work-family conflict in general and in the domains of time-based from work to family and family to work (P This study introduces new operating causes of musculoskeletal disorders and, states that the management of such conflicts can be helpful in reducing musculoskeletal disorders.

Background and this study presents an integration of past research and theory that models the impact of the different levels of psychosocial stress and job performance. According to this model, the causal relationship between the different levels of psychosocial stress and job performance are considerable.
The integrated model of this study was presented based on of past research and theory models. Data to test the proposed models were collected from bank employees. Different path models were developed and goodness-of- fit of models was evaluated. Correlation coefficient regression analysis by forward method and T-test was used to evaluate the relationship between variables. Alpha level less than 0.05 were considered significance.
The result of study suggested a positive and direct relationship between stress in "task level" and "socio-organizational level“with perceived stress of employees. Too, the negative and indirect relationship between scales "organizational culture" and "leadership style" from socio-organizational level with job performance was showed.
The results of the relationship between psychosocial stress and job performance can be achieved more accurate by using the model in similar the population with the same demographic characteristics.

One of the possible effects of occupational exposure to high noise is high blood pressure and cardiovascular disease. Aim of this study was to investigate the association between noise with blood pressure and heart rate in an automotive industry.
78 male workers who worked in an automobile factory, were participated. Blood pressure and heart rate were measured in the morning and in the middle of the day. All measurements were performed at three noise levels: 85-95, 75-85 and 65-75 dB. All data were analyzed using SPSS and MATLAB.
Post Hoc test showed that noise has the same effect on the average systolic and diastolic blood pressure (p= o.733) but Box-whisker plot showed that after exposure, the variation range of blood pressure and heart rate are much more than the other groups. However, this project didn’t show any a specific correlation between the increase in noise level with heart rate but variance analysis showed that the noise level increase lead to changes in heart rate (p= 0.049).
Noise level in 75-85dB as same as 85-95 dB caused the changes in blood pressure and heart rate. Due to cardiovascular disease, it is recommended training programs for workers, reduced noise level and periodic monitoring of blood pressure of workers, especially with a history of hypertension.

Studies in the field of industrial accidents have shown that Human errors have the most important and significant role in accidents. According to studies conducted, 60 to 90 percent of accidents occur as a direct result of human errors. The main objective of this study is to identify and assess human errors in Control Rooms of Arya Sasol Polymer Company by CREAM method.
This Descriptive, Cross_Sectional study was conducted in 2016, using the Hierarchical task analysis (HTA). 14 job tasks was analyzed in four control rooms of the Arya Sasol Polymer Company. Then, by using the basic and extended version of CREAM, common performance conditions and cognitive failure probability were determined and the results were analyzed.
The results of this study show that 45% of identified errors related to execution errors, 22% observation errors, 22% interpretation errors and 11% planning errors.
The results of this study show that it is required to Opportunistic Control Mode for initiating off-site section But for other tasks need to Tactical control mode. Using this technique is appropriate to determine the type of errors and methods of control.

regards body and mental mutually influence to each other, and the health of these two categories include integrity and human health, This study aimed to investigate the relationship between musculoskeletal disorders and general health among employees of a soft drinks industry.
In this cross-sectional study, 80 workers from a soft drinks factory were selected on the basis of census which has more than a year working experience. Measuring devices containing demographic data collection questionnaire, GHQ-28 questionnaire and body map chart to record musculoskeletal disorders in different areas of the body. Data were analyzed using SPSS16 software.
The results showed that the highest prevalence of musculoskeletal symptoms was found in the neck (27.56%) and lower back region (25.5%) during the past 12 months. Age, BMI, years of experience, daily working hours, and shift work are a risk factor for body's organs musculoskeletal disorders, especially the lower back. Most employees surveyed were in a dubious status in public health (4.47 ± 25.89). People were not desirable in terms of physical health, anxiety and social dysfunction. Also, there was a significant relationship between anxiety symptoms with foot pain and depressive symptoms and back pain.
The results of this study show that there is a significant relationship between general health with musculoskeletal disorders in the lower back and legs.

Air pollution is one of the hazardous factors on human health and the environment. In the zinc production industry, because of process nature and using electrolysis pools, the amount of production and diffusion of some of the harmful pollutants such as acidic vapors is exceedingly high. This study aimed to assess the effectiveness of push-pull ventilation system implemented for controlling the emitted pollutants from an electrolysis unit of a zinc industry.
In this study the concentrations of emmited pollutants into the breathing zone of workers and work environment, before and after implementing of the ventilation systemin a zinc production industry was measured. Then, the efficiency of the system in pollution reduction was measured consequently. Finally, the operational parameters of ventilation were measured and compared with the values of the design.
Results showed that the concentrations of lead and zinc were less than the Iran’s occupational exposure limits in all samples but the density of sulfuric acid was more than permissible limit. the concentration of sulfuric acid before implementing the ventilation system in the inhaled, environmental and pollution sources air were 1.17 ± 0.90, 2.14 ± 0.63 and 5.59 ±1.49 mg per cubic meter, respectively. Also these values after implementing the ventilation system were 0.11 ± 0.032, 0.24 ± 0.15 and 0.97 ± 0.52 mg.
The results showed that the modified push-pull ventilation system that was in accordance with the limitations of the electrolysis unit, has proper efficiency for reducing such industrial pollutants.

Driving crash is one of major concerns in all countries. Mental workload reflects the level of attention resources required to meet both objec tive and subjective performance criteria, which may be affected by task demand, external support, and past experience. Mental workload has been commonly cited as a major cause of workplace and transportation accidents. The objective of this study was assessment of mental workload and its relation with fatigue among urban bus drivers in Tehran, Iran.

In this descriptive and analytical study, the NASA-TLX workload scale and the Samn-Perelli fatigue scale were completed by 194 professional bus drivers. Descriptive statistics as well as correlation and regression analysis were performed for data processing.

The total mental workload had highest correlation with the physical demand(r=0.73, p

Mental workload, physical workload and time pressure are important determinants of the total mental workload and fatigue perceived by urban bus drivers. A comprehensive intervention program, include work turnover, trip and work-rest scheduling as well as smoking cessation, was recommended to improve mental workload and fatigue.