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      • Open Access Article

        1 - Assessment of individual and collective risk of leakage in South Pars Refinery based on estimation of reproducibility of connections and modeling of PHAST software
        Gholamreza Jafarinejad Sina Davazdah Emami Mohammad Velayatzadeh
        In this research, in order to investigate the scope of the effect of two types of fire, Flash Fire and Jet Fire, and to determine the individual and collective risk related to the gas tanks of South Pars refineries, the quantitative risk assessment method was used using More
        In this research, in order to investigate the scope of the effect of two types of fire, Flash Fire and Jet Fire, and to determine the individual and collective risk related to the gas tanks of South Pars refineries, the quantitative risk assessment method was used using PHAST software. To obtain reproducibility for the inlet and outlet valve flange leakage scenario, all connections in the path were examined separately for each scenario and their reproducibility was calculated. The results related to the gas tanks of South Pars refineries showed that among the leaks, the leakage related to the inlet valve flange and the outlet valve flange, according to their location (close to the car parking lot and vehicle traffic road as well as the traffic route) people and buildings around it) is more important. The individual risk contour diagram is the result of the combination of two scenarios, inlet valve and outlet valve, which shows the amount of deaths per year within the specified limits. This means that the collective risk of the area under investigation is high. Considering the conditions in the South Pars Refinery in terms of regional weather conditions, wind speed and direction, prevailing wind direction, the location of the buildings in the station and its population distribution, we come to the conclusion that in the event of a leakage incident, the consequences It is in the form of release of flammable gas and two possible types of fire, Jet Fire and Flash Fire. Manuscript profile
      • Open Access Article

        2 - Investigation pesticide residues of Mevinphos and Ethion in apple and grape and health risk assessment based on Monte Carlo Simulation
        Behzad  Mohammadi Khangahi Neda Sohili Maleki Lila  Abbaszadeh Gholamhossein Safari
        Apples and grapes are useful fruits that are widely consumed by humans. These fruits have many pests and diseases, which are controlled by different types of pesticides. Therefore, pesticides enter the human food chain through the consumption of fruits and vegetables an More
        Apples and grapes are useful fruits that are widely consumed by humans. These fruits have many pests and diseases, which are controlled by different types of pesticides. Therefore, pesticides enter the human food chain through the consumption of fruits and vegetables and cause health problems. Therefore, monitoring pesticide residues in fruits and vegetable is necessary. In this study, mevinphos and ethion pesticide residues in 24 apple and grape samples collected from Maragheh County of eastern Azerbaijan province were analyzed based on a quick, easy, cheap, effective, rugged, and safe method combined with Gas Chromatography and mass spectrometry. Moreover, the probabilistic health risk assessment includes non-carcinogenic risk were estimated by hazard quotient using the Monte Carlo Simulation method. The results indicated mevinphos and ethion pesticide residues were detected in 100.00% of the analyzed samples. The ethion residue average in apple and grape samples were 0.08 and 0.09 mg/kg, respectively, which was lower than maximum residue levels (MRL) of Iran. The mevinphos residue average in apple and grape samples were 0.12 and 0.13 mg/kg, respectively, which was above than Iranian MRL. Also, the residues of Ethion and Moinfos in 100% of the apple and grape samples were higher than the MRL of the European Union. Monte Carlo Analysis results indicated that HQ amount with 100 % certainty in children’s and adults were less than 1. Therefore, the consumption of apples and grapes does not pose any significant risk to the health of consumers. Manuscript profile