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Vol. 7 pp. 625-635

E.S. Nasyrova

 

MODELLING OF EMERGENCY SITUATIONS ON A RECTIFICATION COLUMN

Annotation. A rectification column (fractionator) is one of the main units of the oil refining process, and ensuring its safe operation guarantees the efficiency of the production process and prevents possible emergencies. The purpose of the work is to model emergency situations on a rectification column by the method of “event tree”. The object of the study is a complex tray-type rectification column having an input of raw materials (heated oil) and three outputs: 1) upper product (gas components), 2) side fraction (petrol) and 3) lower product (stripped fraction). Two event trees have been compiled: for depressurization through a crack (1 10-4 (possible event)) and for complete depressurization (1 10-5 (rare event)). In case of depressurization through a crack, 23 scenarios of emergency situations development have been simulated, which in accordance with Rostechnadzor Order No. 387 dated November 3, 2022 are classified as practically improbable events. It is modeled that a UAV attack leads to complete depressurization of a rectification column, with the “fireball” event being the most probable. At the accepted values of frequencies of depressurization of a rectification column the risk will be lower than permissible at realization of control of the accepted safety measures.

Keywords: oil refinery, rectification column, accident, event tree, risk, UAV attack.

For citation: Nasyrova E.S. [Modelling of emergency situations on a rectification column]. Upravlenie tekhnosferoi, 2024, vol. 7, issue 4. (In Russ.). Available at: https://technosphere-ing.ru/ рр. 625–635.

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About the Author

Nasyrova Elina Sagitovna

Candidate of Technical Sciences, Associate professor

Ufa University of Science and Technology

4500076, Ufa city, Z.Validi st. 32, Russia.

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