Analysis of Scenarios and Consequences of Accidents Development when Executing the Technological Process of Dewaxing at Production of Commercial Lubricating Oils

I.I. Buzuev, Cand. Sci. (Eng.), Assoc. Prof. I.A. Sumarchenkova, Cand. Sci. (Chem.), Assoc. Prof. D.O. Bukleshev, Candidate, FSBEI HE «Samara State Technical University», Samara, Russia


Various scenarios for the occurrence and development of accidents were developed at the plant for production of commercial lubricating oils belonging to the category of hazardous production facilities at dewaxing. The assessment was conducted related to the zones of possible thermal damage to the personnel based on the calculated intensity of thermal radiation at a distance of up to 30 m from the geometric center of the leak to the irradiated object. In the event of accident leading to depressurization of the pipeline of the liquid ammonia and subsequent intoxication of the operating personnel, the scale of the contamination was calculated. According to the received data, under the most unfavorable weather conditions and delay in taking measures to localize and eliminate the accident, the radius of possible contamination with threshold toxodosis can reach 500 m. In this case, the possibility of intoxication not only of the plant personnel but also of the personnel of neighboring facilities is high. Risk assessment of accident in case of pipeline depressurization was carried out. It is shown that this block is in the zone of strict risk control, i.e. the number of personnel required to implement the technological process should be minimal. Personnel presence in this zone is limited in time. The personnel should be well trained and ready to carry out protective measures in case of implementation of different scenarios of the accident development. It is excluded to have the presence in this zone of any additional potentially hazardous object that supports the domino effect and carries out continuous technological process. The obtained results allow to establish the degree of emergency hazard of the given technological block for advance warning of threats of causing harm to life, health of the personnel, environment. These results can be used in the development of regulatory documents on ensuring safety during operation of the plant.


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DOI: 10.24000/0409-2961-2018-4-61-65
Year: 2018
Issue num: April
Keywords : thermal radiation risk-oriented approach risk depressurization emergency situation fire ignition personnel death toxic damage