GFS

Development of an automated process control system, power supply for consumers, signaling and communication for the possibility of transshipment of liquefied hydrocarbons from railway tank cars to autogas carriers with the possibility of intermediate storage in tanks of gas pumping stations.

The GFS includes:

Building / structure Explosion and fire safety category
Tank farm (10 tanks of 200 m3 underground installation) An
Station for loading liquefied hydrocarbons into tank trucks An
Railway unloading rack for 6 tanks An
The pump-and-compressor section includes: 4 compressors for pumping gaseous propane-butane (3-working, 1-reserve), 4 pumps for unloading tanks and supplying liquefied hydrocarbons to autogas carriers. Compressors are equipped with a complete automation system А (explosive zone class –2; category and group of explosive atmosphere – II AT3)
Fire pumping station with water storage tanks D
Administrative building with a control room D

  1. For trouble-free operation of the station, it is provided:

    1.1. Pre-explosive concentration alarms.

    1.2. Submitting a signal about triggering the alarm when reaching pre-explosive concentrations – 10% of the maximum permissible concentration.

    1.3. Submitting a signal about triggering the alarm when reaching pre-explosive concentrations – 20% of the maximum permissible concentration.

    1.4. Shutdown of compressors and pumps when the pressure in the discharge pipelines rises above 1.6 MPa.

    1.5. Shutdown of compressors and pumps when the maximum level (90%) of filling the tank of the LPG storage park is exceeded.

    1.6. Shutdown of the compressors when the compressor’s own liquid separator level sensor is triggered.

    1.7. Shutdown of compressors when triggered by its own temperature sensor in the discharge line.

    1.8. Shutdown of the compressors when the own pressure sensor on the suction line is triggered when the pressure reaches 0.05 MPa.

    1.9. Shutdown of the compressors when the own pressure sensor on the discharge line is triggered.

    1.10. Shutdown of the compressors when the own oil pressure sensor in the crankcase is triggered.

    1.11. Shutdown of compressors and pumps when the ventilation of the premises of the NKO switchboard is turned off.

    1.12. Shutdown of compressors and pumps when a fire alarm is triggered on the territory of the gas pumping station.

    1.14. Possibility of closing and opening of electrically driven valves from the dispatcher’s workstation in the office building.

    1.15. Possibility of starting fire pumps from the dispatcher’s workstation in the administrative building.

    1.16. Closing of all electrically driven ball valves when a fire alarm is triggered.

  2. To control the operation of the gas pumping station, it is provided:

    2.1. Start / stop buttons near each compressor and pump (including fire pump).

    2.2. Displaying information about the operation of pumps and compressors (on / off, accounting of the operating time) to the dispatcher’s workstation in the office building.

    2.3. Displaying information on the workstation of the dispatcher in the premises of the administrative building on the operation of ventilation in the premises of the NCO switchboard.

    2.4. Information output to the dispatcher’s workstation in the office building from the compressor’s own sensors:

    • level switch for liquid separator;
    • discharge temperature sensor;
    • pressure sensor on the discharge line;
    • suction pressure sensor;
    • crankcase oil pressure sensor.

    2.5. Start-up of pumps and compressors of the NKO from the dispatcher’s workstation in the office building.

    2.6. Display of the “closed / open” status of electric actuated ball valves on the dispatcher’s workstation in the office building.

    2.7. Outputting information from the pressure sensors of the NKO to the dispatcher’s workstation in the office building.

    2.8. Information output from pressure sensors of LPG storage tanks to the dispatcher’s workstation in the office building.

    2.9. Information output: current state of the level, minimum level, pre-minimum, maximum, pre-maximum, density and temperature of the product from the level gauges of the tanks of the LPG storage park to the dispatcher’s workstation in the office building.

    2.10. Displaying information about gas contamination sensors to the dispatcher’s workstation in the office building.