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Introduction: Gas Refinery is one of the strategic industries in the country and the events happening there can cause irreparable damage, therefore it is very important to control events and identify its causes. This study conducted also aims to identify the types of unsafe behavior that is one of the causes of accidents in refineries.
 
Materials & methods: In this cross-sectional study using the safety sampling technique and enjoying observation method and Tarrant checklist, unsafe act of workers were studied. To complete demographic profile of workers, they were interviewed. To determine the amount and types of unsafe behavior with a pilot study sample size, the view was set in 1878. For data analysis, SPSS software and chi-square test were used.
 
Findings: The results showed that 32.2% of workers' behaviors are unsafe. The highest unsafe behavior and its types in Mechanical Repair (33/1%) and non-use or inappropriate use of personal protective equipment (10/6%) were observed, respectively. Also, relationship between unsafe acts of workers with the unit, job, education level, work experience, previous accident history, hours and days were statistically significant (p <0/05), but relationship between unsafe acts with age and marital status were not significant (p> 0/05).
 
Discussion & conclusions: Given that most unsafe behavior was in mechanical maintenance unit and the most types it was inappropriate use of personal protective equipment, to reduce these behaviors, continuous monitoring of workers, training courses on the principles of behavior-based safety, creating a safety culture and safety climate and use of scientific expertise of university researchers were recommended.
 

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Introduction: Adolescence is undoubtedly one of the most important and critical periods of human life. The results of several studies indicate that suicidal ideation is increasing among adolescents across the world, and it is certainly important to reduce suicidal ideation and other related traumas. Therefore, the purpose of this study was to investigate the effect of negative mood control training skills on suicidal thoughts, anxiety, and depression in high school female students in Ilam, Iran, during 2018.
 
Materials & Methods: This quasi-experimental study was conducted based on a pretest-posttest design with a control group. The study population consisted of all female high school students in Ilam, Iran. This study included 60 female students who were selected using a multistage cluster sampling method and the Morgan table. Subsequently, the participants were divided into two groups of experimental and control (30 students per group). The data were collected using the Beck Depression Inventory, Cattell Anxiety Scale, and Maria Kovacs Depression Inventory. Furthermore, the data were analyzed in SPSS software (version 22) through the analysis of covariance (ANCOVA). Ethics code: IR.MEDILAM.REE.1394.126
 
Findings: The results of ANCOVA showed that negative mood control training skills had a positive and significant effect on reducing suicidal ideation (P=0.000), anxiety (P=0.025), and depression (P=0.034).
 
Discussion & Conclusions: Based on the results of this study, negative mood control training skills reduced the level of suicidal ideation, anxiety, and depression in students.
 
 

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Introduction: Risk assessment is a systematic and essential procedure to determine the effects, events, and consequences of human activities on perilous systems. This study aimed to identify the hazards and determine the total risk of various units of Ilam Gas Refinery.
 
Materials & Methods: This descriptive-inferential study assessed the risks on 18 various units of Ilam Gas Refinery through a combination of Bow-tie and FMEA methods. Initially, the top event, threats, consequences, as well as preventive and recovery measures were identified using the Bow-tie method. Afterward, Risk Priority Number (multiplying severity, occurrence, and detection) was obtained by FMEA. Finally, the risk level was divided into three groups of low, moderate, and high crisis.
Findings: Based on Bow-Tie, the release activity of H₂S gas was introduced as the top event. Furthermore, tank leakage and burst, corrosion and wear of pipes and fittings, human error, poor operating conditions, and natural factors in the threat role, as well as damages to human and environmental resources and financial losses were identified as consequences. Based on FMEA, the hazard of tank leakage and burst with two effects of human and environmental damages was in the level of high (major) crisis and was recognized as the most important hazard.
 
Discussions & Conclusions: Gas refineries are faced with many hazards due to the nature of the work process. The integrated approach of Bow-tie and FMEA is a suitable method for risk assessment in such industries.