1 2251-7189 Shahid Sadoughi University of Medical Sciences, Yazd 973 Ergonomics Prevalence of musculoskeletal disorders and its related factors in office workers of Minab Health centers by ROSA Technique hashemi maryam b Halvani Gholam Hossein c Askari Shahi Mohsen d Tajvar Abdulhamid e Vahdani Sayyid Fatemeh f Mehrparvar Amir Houshang g b YazdUniversity of Medical Sciences c YazdUniversity of Medical Sciences d YazdUniversity of Medical Sciences e Shiraz University of Medical Sciences f HormozganUniversity of Medical Sciences g YazdUniversity of Medical Sciences 1 6 2020 12 1 1 12 20 09 2018 12 01 2020 Introduction: Prevalence of musculoskeletal disorders (MSDs) is high among office workers. One of the most important risk factors of these disorders is awkward posture and inappropriate environmental conditions. So, this study was carried out to determine frequency of MSDS and its related risk factors among the office workers of Minab city healthcare centers in 2018. Materials and Methods: This cross-sectional study was conducted on 104 staff in Minab city health care centers. Nordic musculoskeletal disorders questionnaire was applied to determine the prevalence of MSDs and Rapid Office Strain Assessment (ROSA) method was used for posture analysis. The data were analyzed by SPSS version 21 using descriptive statistics and chi-square test. Excel software was used to plot the graph. Results: The highest prevalence rates of MSDs were reported in low back (63.5%), neck (51.9%) and upper back (50%). There was no significant difference between MSDs and age, sex and BMI (P˃0.05) but there was a significant relationship with work experience (P˂0.05). Totally, 36.6% of employees were placed in the first priority of corrective actions (i.e. the need for ergonomic interventions as soon as possible). There was a significant correlation between awkward posture and neck pain (P <0.05). Conclusion: The frequency of MSDS in health center office workers was high and neck pain was related to awkward posture.  
871 Safety and occupational accidents Safety risk assessment and ranking of the construction projects with combined approach of FMEA and fuzzy TOPSIS emamgholizadeh saeid h Hoseini seyed Amir i h shomal unversity i shomal unversity 1 6 2020 12 1 13 23 05 06 2017 30 06 2020 Introduction: Construction projects are one of the most important sectors of the economy of the country, which has a high capacity for job creation. Construction projects as part of a huge and strategic set of construction projects that unfortunately have a large share of work-related accidents due to the lack of attention to safety. One of the most important issues that can contribute to these events in construction projects is the weakness or lack of comprehensive and efficient risk management. The purpose of the present study was to identify and rank safety risks in construction projects with the combined approach of FUZZY FMEA and FUZZY TOPSIS Materials and Methods: This study is descriptive-survey research in terms of purpose and terms of data collection The research was conducted by case study in the case of Qasrdaria town project in Mahmudabad city in 2015. Data collection was through a field study on the statistical population, including project managers, supervising and executive engineers, and building safety experts. The data were calculated in MATLAB and EXCEL software and the output of FUZZY FMEA and FUZZY TOPSIS methods were analyzed. This method for subsequent stages of risk assessment and risk control based on their priority, as well as cost savings. Results: The identified risks were given to the building safety specialists in the form of a questionnaire. The most important risks extracted from the FUZZY T.O.P.S.I.S method were related to the colliding crane arm with the building and then slipping and falling off the people from the stair ramp. In the FUZZY F.M.E.A method, the risks associated with falling from the edge of the pit, slipping and falling off the stair ramp, as well as falling from the scaffolding and workstations are the highest. Conclusion: The most important identified risks in the construction industry based on these two ways are as follows: falling off the edge of a pit, slipping and falling from a stair ramp falling from a scaffold, workstations, colliding of crane arm with the building and slipping and falling people from the stair ramp 961 Safety and occupational accidents Determining optimal risk assessment model in construction projects (Case study: steel plant construction project SALAJEGHEH SAGHAR Akhavan Afarin k Hajihosseini َAlireza k Science and Arts University 1 6 2020 12 1 24 33 08 08 2018 Introduction: Identifying occupational hazards and managing occupational safety and health risks has been the most important mission and responsibility of the health and safety management system in organizations and adopting coded plans to achieve this is the key to continuously improving this system and promoting it. The aim of the present study was to determine the optimal risk assessment methodology in development projects. Materials and Methods: This was a descriptive-analytic research In this research, using previous research studies and collecting expert opinions, the most important criteria for selecting a specific risk assessment methodology, and then using one of the three most-used techniques is an important activity in the steel making industry and risk assessment. Then, the decision matrix is based on the strengths and weaknesses of the models. The prioritization of these three methods is done using the hierarchical analysis decision method. Results: In this paper, five key factors, the degree of application in identifying hazards, usability in different stages of risk assessment, reliability, ease of use, and training needs and costs, are identified as the most important criteria for choosing a risk assessment technique and the FMEA method was considered as the best  Risk Assessment Method. Conclusion: FMEA methodhas been introduced with regard to its capabilities as an optimal risk assessment method for contruction projects. 1044 Safety and occupational accidents Investigating the effective annual dose of radiation angiography department of Afshar Hospital in Yazd and providing radiation protection strategies to better manage the dose received by staff Asgari Azam parach Aliashghar mirmohamadi jalil Mehrparvar Amir Hoshang Daneshian Elahe Nekoofar Zahra 1 6 2020 12 1 34 44 22 10 2019 Introduction: Due to the increasing use of angiography procedures and the higher risk of deterministic and stochastic effects for radiation workers of these sections than other radiological procedures, radiation safety is very important among angiography staff. Therefore, this study aimed to obtain the effective dose of angiography staff, compare them with the standard dose limit, and finally outline the strategies for occupational dose reduction in angiography. Methods: In this study, the report of film dosimetry of angiography staff was studied and the effective periodic and annual doses of 34 radiographs were reported from the year 2015 to 2018. The relationship between effective dose and body mass index, work experience, gender and age of staff was also evaluated. Results: The results showed that the average effective dose of the physicians, nurses and radiographers in 2 months period were 0.2 mSv and their average annual effective dose were 1.6, 1.2 and 1.2, respectively. In addition, there were no significant relationship between effective dose and work experience, age, sex and BMI of the radiation workers. Conclusion: The effective dose of radiation in this study is less than the annual dose.. Low effective doses do not make their radiation protection less important because this reduction can be due to radiation protection by personnel in this ward. Therefore, as far as possible, radiation protection measures should be taken to reduce the radiation exposure of catheterization lab staff. In these radiologists thyroid protection, eyes, gonads, and the organs that are usually outside the lead apron is of great importance. 1056 Ergonomics Investigating the Cognitive Relationship between the Color of Vehicles and the Type of Accidents Leading to Death and Injury of Drivers moradi bontoot somayeh halvani Gholam Hossein abarghouei naser sadra Jambarsang sara fallah Hossein anoosheh vida sadat samsami babak Shahid Sadoughi University of Medical Sciences, Yazd, Iran Shahid Sadoughi University of Medical Sciences, Yazd, Iran Institute of Applied Science and Technology Yazd, Iran Shahid Sadoughi University of Medical Sciences, Yazd, Iran Tabriz University of Medical Sciences, Tabriz, Iran Shahid Sadoughi University of Medical Sciences, Yazd, Iran Urmia University , Urmia , Iran. 1 6 2020 12 1 45 54 16 01 2020 Introduction: Annually, many people die or suffer from irreparable injuries in road accidents worldwide. One of the causes of accidents is drivers, cognitive factors and the vehicle color is one of the factors that affect the cognitive performance of the drivers. Therefore, this study aimed to investigate the relationship between vehicle color and type of accidents leading to death and injury. Materials and Methods: This descriptive cross-sectional study was performed on 300 randomly selected cases of accidents in Kerman. Information including the manner of accident, name and color of vehicle, location, cause, time, area of protection, weekday, season and type of accident were collected from traffic police and traffic department statistics and analyzed by using SPSS software. Results: The results of the study showed that most of the accidents occurred during daylight hours. Motorcycle, black and white vehicles had the highest and yellow and beige vehicles had the least frequency. There was no significant difference between vehicle color (dark and light) and other variables with the type of accidents leading to the driver's death and injury. Conclusion: According to the results of this study, no significant relationship was observed between vehicle color (dark and light) and the type of accidents leading to death and injury on. One of the reasons seems to be the difference between the methods of statistical analysis. Further studies are needed to investigate the relationship between the type of accidents and vehicle color. 998 occupational medicine Survey the level of well-being and Psychometric characteristics of hospital nurses’ well-being at work scale Soltani Shal Reza Saadatbin Javaheri Fatemeh Zebardast Azra Department of Psychology, Faculty of Literature and Humanities; University of Guilan, Rasht, Iran. Department of Psychology, Faculty of Literature and Humanities; University of Guilan, Rasht, Iran. Department of Psychology, Faculty of Literature and Humanities; University of Guilan, Rasht, Iran. 1 6 2020 12 1 55 68 26 01 2019 Introduction: Mental health problems is common among nurses, because they have to deal with to workplace stresses such as work-rest cycle problems, overload responsibility, financial problems, lack of vacation time, pressures of work, patient communication frameworks  and painful experiences of patients. These factors can decrease their wellbeing, but there is not brief and practical scale to assess psychological resiliency among nurses. Therefore, the aim of the present study was to evaluate the psychometric properties of the hospital nurses’ well-being at work scale. Materials and Methods: This cross-sectional study was conducted on 194 nurses. The hospital nurses’ well-being at work was administered. The hospital nurses’ well-being at work is composed of 67 items and psychometric properties were examined through the Face validity, Content Validity, Concurrent validity, Construct validity. The data were analyzes by SPSS software. Results: Face and content validity were approved by five psychologists. The KMO index and Bartlett's Cruity Index indicated that correlation matrix was suitable for performing exploratory factor analysis. Factor analysis with Principal Component Analysis extracted one factor with 67.06% total variance. Internal consistency was confirmed by a Cronbach’s alpha of 0.957. According to the findings of the present study, 2.1% of nurses experienced very low well-being, 6.7% experienced low, 66.6% experienced moderate and 22.7% experienced high one. Conclusion: This study showed that the hospital nurses’ well-being at workplace had appropriate psychometric properties and is a valid and reliable screening index to measure well-being of nurses. This index could facilitate the assessing Well-Being in brief and practical way among nurses. 765 occupational medicine Effect of respiratory exposure to benzene, toluene, xylene and ethyl benzene on the spirometric indices in two consecutive years among the petroleum products loading workers Zolfaghari Ahmad Zarei Abdoreza Mostaghaci Mehrdad Mihanpour Hamide zare sakhvidi Mohammad javad PIHO 1 6 2020 12 1 69 75 30 05 2016 03 07 2020 Introduction: Benzene, toluene, xylene and ethylbenzene (BTEX) are the most important aromatic compounds in petroleum products. Due to high vapor pressure, BTEX compounds easily change to gas form and mixed with ambient air. Petroleum products loading workers are exposed to these compounds by the inhalation of BTEX compounds. The aim of this study was to evaluate the effects of respiratory BTEX exposure on lung function indicators . Materials and Methods: A cross sectional study was conducted on petroleum products loading workers in 2015 until 2016. there were process of inclusion and exclusion in working tasks. 32 people participated in this study consciously. Eighteen samples of air was gotten in the breathing zone of workers. Sampling was performed by  indivial sampling pump 222-4 model by use of activated charcoal were taken to determine the workers' exposure to benzene, toluene, xylene and ethyl benzene. Method of sampling was 1501 NIOSH.To determine and evaluate the lung function, spirometry tests were performed according to OSHA protocols. Results: The results of analysis of samples showed that the average exposure to benzene was above the occupational exposure limit and the average exposure to ethyl benzene, toluene and xylene were below the occupational exposure limit. Lung functions indices, including FVC, FEV1, FEV1 / FVC  were reduced. Conclusion: The results showed that exposure to BTEX compounds could affect lung function indices, and reduced Lung functions indices. 976 occupational medicine Adaptation of a clinical practice guideline for Maintenance of Wakefulness Test (MWT) Sadeghniiat-Haghighi Khosro Eftekhari Sahar Mirzaaghaee Farzaneh Alemohammad Zahra Banafsheh Tehran University of Medical Sciences Tehran University of Medical Sciences Tehran University of Medical Sciences Tehran University of Medical Sciences 1 6 2020 12 1 87 97 30 09 2018 07 07 2019 Introduction: Excessive daytime sleepiness is related to significant morbidity and mortality in either the patients or others. Maintenance of Wakefulness Test (MWT) is designed to evaluate the ability to maintenance of wakefulness in standard conditions of the test. Due to the existence of different methods for performing and interpreting the MWT test and the importance of unifying the method of performing and interpreting this test in Iran, the localization of the clinical use guide of the MWT test was considered. Materials and Methods: Initially, it was studied the available guidelines, and one of them was chosen as the main guideline. Then, to standardize the clinical services provided to patients, according to the conditions and facilities in Iran, the localization of the clinical guideline of MWTtest was performed. .Results: This guideline contained recommendations for implementation and interpretation of MWT. For each recommendation, the level of evidence including “standard”, “guideline” and “option” was specified. Conclusion: Given the prevalence of drowsiness and its importance in safety, occupational accidents and road accidents and the role of MWT testing in its evaluation, it is hoped that by providing the most cost-effective diagnostic method in this guide, a step will be taken to better allocate health resources in the country.