Modern Technologies for Oil Quantity Measurement in Tanks

Author Name(s): Liya H. Fokeeva, Ramilya Kimetova
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This paper discusses the problems of accounting for the amount of oil in tanks. Various types of oil storage tanks, as well as instruments for controlling its amount, are analysed. Based on the studies conducted, the most suitable level gauges for use in various types of oil tanks were identified. Although visual inspection may be a priority, automatic level meters have several advantages. Using inexpensive level gauges and switches, be they capacitive, magnetic, optical or mechanical, it is possible to send signals to generate either a supplying order (filling the tank) or a work order for replenishment. At a more advanced level, they can be configured to activate a pump that will automatically replenish the oil stock. Other depth type level gauges using acoustic technology to determine the exact level of oil and oil product are available. The applied level switches must have some damping to avoid constantly fluctuating level changes due to system operation. When an automatic tank volume recorder is used, the system may give an alarm about a sudden change in fluid volume. Using an automatic level indicator, the system can be designed to send a signal to computer maintenance control software to indicate the amount of fluid added.


Today, oil level monitoring in tanks is very important. Without these data, it is impossible to take into account the amount of oil in the reservoirs. The amount of oil in the tanks is determined by the volume occupied by it in the tank. To quickly and accurately determine the volume of oil depending on its level (innage level), pre-compiled calibration (metering) tables for each type of tanks are used. The tanks are calibrated using various methods: by measuring vessels, by pouring and draining pre-measured volumes of water (for small tanks); with the help of volumetric meters measuring the amount of poured water while measuring the level in the calibrated tank, and measuring the geometric dimensions of the tank. A method is chosen taking into account the volume of tanks and the necessary accuracy. In this regard, the work considers various systems for monitoring the oil level in reservoirs that are used today, and the best option is selected. The types of tanks for the placement and storage of oil are also considered.


At present, however, little studied is the problem of assessing the reliability of oil reservoirs both at different stages of their life cycle and during operation. When assessing the level of reliability of tanks in operation, the most effective is the expression of this value in terms of the quality of their service.

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