AUTOMATED GRADUATION OF TANKS WITH USE OF STAFFING UNITS ACCOUNTING INFORMATION
AND MEASURING SYSTEMS OF GAS AND OIL BASES 

Godnev Aleksandr Gennadevich, candidate of technical sciences, associate professor, Russian State University of Oil and Gas named after I. M. Gubkin (65 Leninsky avenue, Moscow, Russia), E-mail: ntc-korolev@yandex.ru 

681.5:622.276 

10.21685/2307-5538-2019-1-3 

Background. The purpose of the article is to describe the method of calibration of tanks with a given accuracy and confidence level using fuel dispensers or automatic risers filling, respectively, during normal operation of gas stations or tank farms.
Materials and methods. A method and a device for its automatic calibration of tanks using fuel dispensers (filling stations) of filling stations (gas stations) or automated loading risers (ASN) of oil bases (NB) in the process of selling oil products (NP) to consumers are considered. The novelty of the method consists in translating the systematic error of metering stations (fuel dispensersdispensers or automated loading stations-ACH) into random discharge by periodically checking them with a standard volumetric meter and introducing a constant correction to the calibration characteristics of metering units after each emptying of the tank or its part. In this case, the systematic error of metering points in each of the averaged samples takes a random value. The method of determining and controlling the calibration characteristics of gas stations' tanks, NB is registered in the State System for Ensuring the Uniform Measurement of MI 2564-99.
Results. This method allows you to reduce the total error of metering stations as a set of representative statistics (15–25 tank emptying) almost to the error of the measuring device, i.e. approximately to ± 0,05 %, and at the same time provide the specified confidence probability P = 0.95 of the error of the tank calibration. The economic effect is the ability to carry out the calibration of several tanks in operation simultaneously, which significantly reduces the costs and timing of its implementation.
Conclusions. The developed method of automatic calibration of gas stations and gas stations with the help of standard dispensers or ASN, which are part of automated IMS, provides for calibration with a given accuracy and confidence level. It also allows for the calibration of several tanks simultaneously in operation, which significantly reduces the cost of calibration and the timing of its implementation. 

сalibration of tanks, fuel dispensers of gas stations, automated standpipes for loading of tank farms, error of graduation, confidence probability of graduation