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How a modern gas station works – Fuel for a car

How a modern gas station works - Fuel for a car 1
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How is a modern gas station

Installation of gas stations of the Gazpromneft network, technologies and regulations guaranteeing the quality and accuracy of fuel dispensing.

September 23, 2019 at a gas station of the Gazpromneft network in St. Petersburg during an interactive tour reporters were shown how modern gas stations differ from what they were just a few years ago. Outwardly, they may look the same, but the most important processes are hidden from the eyes of an outside observer. The tour was conducted by Sergey Tsykunov (head of operations of the Gazpromneft gas station network in Russia), Anton Glukhov (head of the retail sales department of the Gazpromneft gas station network in Russia) and Artemy Saygin (head of the Infrastructure Monitoring Center project)

A modern gas station is a “tight” system where human factor is minimized. The equipment is sealed, and gas station personnel do not have access to its settings. Manual adjustment of data or reporting excluded.

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The accuracy and uninterrupted operation of the station are monitored by an intelligent system to which all the equipment and sensors of the gas station are connected: from speakers to coffee machines. The system constantly compares data on fuel outflow from reservoirs and columns, and compares them with cash desk data, therefore underfilling is excluded. She also monitors the continued preservation of the quality parameters of the fuel. She also makes sure that all equipment works accurately and correctly, and, if she notices abnormalities, she gives recommendations when to repair it..

Underground tanks and fuel transfer process

A fuel truck with a batch of fuel arrives at the gas station daily. All fuel trucks with petroleum products sent to gas stations, are sealed. When it is received, the operator carries out a number of mandatory actions: checks the seals, after opening the tank checks the density and temperature of the product, the appearance of the fuel, visually inspects the fuel for absence of mechanical impurities, checks the parameters with the data of the quality certificate in the accompanying documents.

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Each batch of fuel has its own quality passport. It indicates the type of fuel from which tank farm it arrived, as well as all the main parameters in accordance with GOST. These passports hang in the corner of the consumer at the gas station in the public domain.

Before draining the fuel truck, the operator selects arbitration trials each batch of fuel arrived. These samples are stored in a sealed container until complete batch sale..

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In addition, the quality of fuel at Gazpromneft gas stations is controlled mobile laboratories. This is a van, inside of which there is modern automatic equipment for testing petroleum products. Express analyzers provide verification of gasoline and diesel fuel compliance with the requirements of the Technical Regulations of the Customs Union and GOST. Unlike traditional stationary laboratories, where the fuel analysis takes hours and even days, the mobile complex allows you to evaluate the main parameters of the oil product within half an hour. Test results are generated automatically, manual data correction is excluded. Mobile laboratories at least once a month, and in some cases more often, check the fuel at each gas station. All checks – without warning, gas station personnel never know about the upcoming arrival of controllers.

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The delivered fuel is discharged into the tanks underground. There are hundreds of meters of technological pipelines and cable networks. There is a separate tank for each type of fuel, plus there is another emergency one. They are marked and well lit, therefore impossible to mix fuels. Hoses for draining gasoline and diesel fuel differ in color and diameter.

More recently, with his help lack of water in the tank checked with a stick – meter stock. Smeared with water-sensitive paste, lowered into the tank. If the paste has changed color, from pink to green, then there is water. Now automation is responsible for this. At the bottom of each tanks is installed sensor, which captures a change in content density. Gasoline has an average density of 740 kg / m3. Dt 830 kg / m3. The density of water is about 1000 kg / m3. At the same time, it is heavier than fuel and always sinks to the bottom. Therefore, the sensor at the bottom will detect it. Of course, getting water into the tank is always an emergency. For example, when the soil is shifted, the wall of the tank may be damaged. As soon as the sensor detects the presence of water, the sale of fuel from this tank will be stopped. So the meter stock is yesterday, atavism. But according to the law, every gas station must hold a meter stock (legislation does not always keep pace with technological progress).

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In addition to density, sensors in tanks allow you to determine fuel volume and temperature. The gauge probes in the tank measure the fuel level, then according to the individual calibration tables for each tank, the measuring system gives out the volume of fuel stored in the tank. Also, the level gauge measures the temperature of the oil product, without fixing the temperature, it is impossible to estimate the density of the fuel. So, in the 24/7 mode, tracking the volume, temperature and density of fuel in tanks, automation controls its quality, eliminates the risk of foreign liquids getting into the fuel and mixing. All sensor data is displayed on a special device – the level gauge console, which is installed in the operator room.

Fuel dispenser (fuel dispenser)

Gas station network Gazpromneft equipped with ultra-precise fuel dispensers. it the most modern Today, fuel dispensers that meet all international standards – including. environmental. To prevent odors and fuel vapors from filling stations in the filling station gas return. Each fuel dispenser is associated with its own volumetric. He considers the amount of fuel that was released from this column. This data is checked with the data of the cash register and the tank data – how much has gone from there. At most gas stations are piston volumetric. At the gas stations of the Gazpromneft network, there are augers that provide stable indication of the dose of dispensed fuel, ensuring high accuracy. They work all year round at any temperature. Each volume meter costs about 100 thousand rubles. And the whole column costs about a million million.

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Equipment verification It is regularly carried out by the Center for Standardization and Metrology, the date of the last calibration can be seen on marked equipment. Each fuel dispenser is checked monthly by the service organization for the accuracy of fuel delivery. In addition, daily accuracy control is carried out by our employees at each gas station network. All columns are sealed without fail by government inspectors. Station staff do not have access to speaker adjustments. This is a high-tech equipment with sophisticated software designed exclusively for professional management..

Mernik for fuel

To check the accuracy of fuel loading, a special device is used – a measuring device, also certified and sealed by the inspector. The standard values ​​of permissible deviations are plus or minus 25-50 milliliters per 10 liters, depending on temperature conditions. If you visualize this volume, it’s a drop in the ocean.

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The state plans to reduce the maximum permissible error of the fuel dispenser. At the network Gazpromneft it is already stricter than GOST – plus or minus 40 milliliters at temperatures outside the range of +15 ° С ÷ +25 ° С.

For the current control of the fuel dispenser at the gas station Gazpromneft the first in Russia began to use a measuring device with such accuracy characteristics. About 100 gas stations throughout Russia are already equipped with them. It is even more accurate, its error is only 0.05%. Gradually, as part of the planned renewal of the fleet of measuring tanks, they will be equipped with all gas stations.

Any customer of a gas station has the right to ask to check the accuracy of filling using a measuring device. To do this, the remaining fuel is poured from it and from the pistol, and then 10 liters of fuel are spilled through it. On the scale you can see how much is poured and what deviation.

How motorists break columns at gas stations

It is impossible to make the column work somehow incorrectly, but it can be broken. The most common situation is when motorists forget to remove the gun from the hatch after refueling and pull out the hose while driving. Or pull the hose too far to, for example, fill the canister in the trunk. If the gun is damaged, it may happen that at the next refueling the gas return system will pump the incoming fuel back. At the same time, the counter on the column is spinning, and the fuel from the gun does not pour. To prevent this from happening, do not pull the column hose to a length not intended for this.

And if you suddenly damaged a gun, there is no need to be afraid, just inform the staff about it and the fuel dispenser will be closed for repairs. Nobody will ask you to pay for the breakdown.

Infrastructure Monitoring Center

All technological and commercial equipment at the gas station is connected to unified intelligent monitoring system. She monitors all processes at the gas station, the condition and accuracy of the equipment. And if he notices deviations in his work, he gives recommendations when to fix it..

Inside the company, this system is called the infrastructure monitoring center, abbreviated as MCI. But essentially this is the one internet of things, which has been talked about so much lately. When things communicate with things.

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Infrastructure Monitoring Center is know-how the network Gazpromneft. None of the Russian vertically integrated oil companies have such a system. It was launched recently, but the first results are already visible. Currently connected to the monitoring center all gas station networks in Russia.

With the help of the MCI, the managing gas stations on the screen of a working computer, they monitor all processes at the gas station:

  • Tank Status
  • Oil products supply journal. The system monitors when the fuel runs out and sends a signal that a new batch is required
  • The discharge of a fuel truck can be observed in real time. Now that the drain can be controlled at the MPI, all types of fuel can be drained simultaneously (it used to be in turn). A fuel acceptance certificate is generated automatically; gas station personnel have no way to manually adjust it.
  • A transaction log in which each transaction at the gas station is visible: fact of vacation, amount, volume. This data is checked against the column and reservoir readings..

Also, access to this system are metrology employees in their offices, and employees who monitor the health of equipment.

The system online monitors the status of equipment at each gas station network Gazpromneft in Russia. The ranges of normal operation of the equipment are set for all gas station equipment in the MPI system. When deviating from the normative range, the system generates a signal about a malfunction of the equipment. If the deviation is not significant, then the system puts this piece of equipment under surveillance in real time. If degradation of the equipment is detected, the MCI system sends a request to the discussing organization about a violation in the equipment. A service organization visits the facility to eliminate the cause that affected the unstable operation of the equipment.

Thus it becomes possible to repair equipment before it breaks down. For example, at the fuel dispenser, the loading speed is gradually reduced. Most often, the filter is just clogged, but there may be other reasons. The client does not notice this: speed decreases gradually and insignificantly. Previously, if at the dispenser the filling speed decreased below 38 liters per minute, this problem was detected only during the next inspection, the interval between which was 30-60 days. After detection, the fuel dispenser closes for repairs, which took about 5 hours. It’s 5 hours of downtime. Now the system automatically tracks the first signs of a decrease in loading speed.. After the system detects a malfunction, it transfers information about it to the service organization. For 20-30 minutes, the service organization makes a decision on arrival at the gas station. Another 30 minutes to resolve.

The idea of ​​creating an MPI began with coffee machines. After the introduction of self-service in a cafe at a gas station, all coffee machines were connected to a single intelligent coffee sales management system. It not only controls the operability of the equipment and allows you to repair it remotely, but also remote sets the settings for making coffee. Thanks to this system, you can follow a single recipe and maintain the same quality of the drink at all, even the most remote, gas station networks.

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With the introduction of remote monitoring equipment at the gas station Gazpromneft It began to work almost smoothly. The risk of an emergency is virtually eliminated. Service time decreased by 21%. Equipment maintenance costs decreased by 5%. You can evaluate the work of a service organization at the MDC: percentage of completed applications, incident response rate.

The monitoring center allows metrology specialists to monitor fuel safety at gas stations. They see the data of the level gauges, the data of deviations from the fuel density up to one ten thousandth, the error of the fuel dispenser (within the limits allowed by GOST) and the discrepancy between the data of the tanks and fuel dispenser (they should not be)

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