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Additives Dosing System

Additives Dosing System


The project of construction of the newly constructed plant in oil refinery in Pancevo, MHC/DHT, which was planned to produce jet fuel and euro diesel didn’t include the installation of systems for the dosing of antioxidants in jet fuel and diesel fuel additives for the euro diesel. Dosage of antioxidants is regulated in the "Official Gazette of RS", no. 64/2011, Annex II, and dosing the additives for required lubricity and electrical conductivity in euro diesel is regulated in accordance with the Standard EN-590. For this reason, it was necessary to set up a project for the construction of installations for the dosage of antioxidants in jet fuel and dosing the additives for euro diesel fuel. Therefore, NIS Serbian oil industry owned by GaspromNEFT released the tender which was after the bidding phase awarded to WIG.


System for additives dosing is supplied from a single cylindrical horizontal tank divided in two parts with the volume of 60 m3 and 40 m3 for each part of the tank. Tank consists of two different types of additives. The first part of the tank, with the volume of 60 m3, consists of the additive for dosing the diesel metering line. The second part of the tank, with the volume of 40 m3, consists of the additive for dosing the jet fuel metering line. Below the lowest level of the tank, 4 self-priming gear pumps for pumping the additives are placed. The capacity of the pumps is 19 l/min. Bypass valve is installed before the entrance of the injection block, which will set the inlet pressure in the injection block. Pressure should be about 5 bars higher than the pressure in the main line. For optimal performances, additive is injected down the course of the fluid. A static mixer is installed in the main pipeline.

As per the technical requirements, the system adds additives in two lines, diesel and jet fuel, as well as two independent entities. Each dosage unit is made out of two completely separate metering lines. This provides continuous additives dosing at all operating conditions and at the high redundancy of the system. The solution is based on a specially designed module connected to a control unit that can be controlled by adding additives for each line. The modular system consists of an injection unit which containing PD flow meters, solenoid valves and filters, injection controller connected to the main line standards and depending on the fluid flow in the main line and prediction formulas. Pulse signal opens and closes the valves in the injection block.

System for additives dosing can be controlled via local display remotely from the control room. This type of system control is considered redundant. In case of a communication breakdown between the control room and the system for additives dosing, locally configured HMI takes the main role in controlling the system.

The system operates in a redundancy. There are installed two SMAR controllers, type DF73, which are working in a full redundancy. There is a high degree of security of the system in the event of a potential failure of one of the controllers. Namely, if one controller fails, its role as the primary takes another one, redundant controller.


Project Details


Our automation & control solutions range from conceptual design to start-up and commissioning and include control system configuration & integration, safety control systems, remote instrument enclosures (RIEs) & panels enclosure and panels design and traditional automation & control services combined with advanced applications offerings and field construction services


WIG offers an independent approach to vendor selection and application.

Our vendor-independent approach allows us to objectively assist in the selection process of the major controls in order to maximize operating efficiency and productivity. Also, as an engineering company, we have the internal knowledge and resources necessary to offer our clients turnkey solutions, from concept to commissioning and startup. Our extensive project management experience, paired with a structured implementation approach and early involvement in the project, can significantly reduce rework and associated costs later in the project.


WIG is one of the leading providers, in this part of Europe, of automation & control services, including system engineering, specification, integration and implementation.

Experience matters. We have built a reputation for innovation, quality and value through skillfully engineered automation & control systems to the upstream oil & gas as well as, water&wastewater, food and beverages and refining and chemical industries. We deliver projects to customers schedule, managing multiple and diverse technologies, automation, maintenance and business system integration and lifecycle costs.


We in WIG are fully aware that commissioning usually represents a critical stage in the life of a facility. Commissioning process may be considered as a series of vital checks undertaken before actual operation begins. Since the complete commissioning services play an important role in minimizing project risks and achieving performance goals from the very start, our job is to prove the integrity of all systems, identifying and correcting design and construction errors along the way. Our comprehensive approach helps our clients meet a host of challenges; regulatory, safety and environmental compliance; and naturally, operational performance.

We in WIG undertake complete responsibility for commissioning, whether we start in the engineering office, provide expertise in the fabrication yard or mobilize to a remote area.

Our confidence and wide range of options are the result of support and cooperation we have been cultivating for more than 20 years with our Principals and Partners.

We also promote products and represent our principal's interests with an accent to provide comprehensive customers support in instrumentation selection and application, consulting, distribution of products and systems created by our principals and partners. After that stage, we take care of long term genuine spare parts supply and provision of technical documentation and manuals, software tools for operating and maintenance and many other customer related aspects. 


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