Наукові вісті Далівського університету № 21
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Item Safety of Emergency Releases Containing Solid Phase.(СНУ ім. В. Даля, 2021) Granovskiy, E.; Smalii, V.; Korol, D.; Грановський, Е. О.; Смалій, В. В.; Король, Д. Р.The quantitative risk assessment is the most accurate way of risk determination and the basic approach of obtaining valuable information for further risk management. The risk can be determined as a probability of some event with hazardous consequences occurring during time diapason such as one year. There are variable applications of risk assessment in industry and the technology of risk assessment constantly improves because of widely spread using of risk-oriented approach. Regulations in all countries create specific influence for engineering methods integrating safety in the technology systems. However there are various scientific problems in quantitative risk assessment in specific situations during risk studies. Such situation has occurred in flare pipeline system of combined polymer and refining enterprise. Solid particles of polymers as products of polymer synthesis can be contained in emergency releases and can create deposits along the pipeline of flare system which can be the cause of significant declination from design intent and lead to decreasing or even stopping of the flow rate. The blockage of pipeline can lead to depressurization and rupture of apparatuses with dangerous chemicals inside and consequences can vary from economic losses to ecological damage or even people death. In the current study quantitative method of risk assessment of the flare system has been developed, applied and studied. Main focus was on hazards due the deposition of solid polymer particles along the pipeline and following pipeline blockage. The deposition of solid polymer particles has been simulated, design intent declination criteria have been chosen. The probability of design intent declination has been defined using methods of mathematical statistics and probability theory. Advantages, disadvantages and limits of developed quantitative method of risk assessment have been discussed in the study. The results of study showed that the new approach of quantitative risk assessment of pipe transport systems where deposits occurs can be implemented in a fast way and has easy-to-understand algorithm. The output data showed that the expected frequency of emergency releases, concentration and size of solid particles, flow parameters and the time needed to reach the design intent declination during continuous emergency release have great influence on the risk value of design intent declination.