Site preparation
In 2018, the primary tasks were to secure ownership of the land in the area, complete the necessary plot formations, address land use and agricultural classification issues, modify the zone classification, and clarify the regulatory framework. Hundreds of properties had to be consolidated into a single cadastral number to create an investment area and to allocate the plots needed for implementing infrastructure elements. To facilitate industrial use of the land, demining, archaeological research, soil mechanics surveys, and environmental studies were conducted over nearly 620 hectares. Debrecen Infrastructure Development Ltd. played an active role in coordinating these activities.
Development electricity infrastructure
In Phase 1, a new switching station was established to meet the electricity supply needs, capable of serving up to 2x50 MVA capacity. As part of the development, approximately 2.2 km of dual-system high-voltage lines were constructed. Additionally, provisions were made for new 22 kV connections to support facilities such as the public transport centre and public utility substations.
In Phase 2, the high-voltage switching station was expanded redundantly to 100 MVA, and a new 132/22 kV substation with a capacity of 50 MVA was also constructed. As part of this development, a second dual-system high-voltage overhead line nearly 7.4 km in length was constructed, and an expansion of the Józsa 400/132 kV transformer station was also required. Further, a new 22 kV substation connection was established to accommodate the future needs of the northern 100-hectare area of the economic zone.
Development of the telecommunications infrastructure
The technical and capacity requirements of the Industrial Park were addressed by installing optical cable connection points (splice pits). The substructure network was constructed with protective ducts designed to accommodate 12x12 optical cables, and it includes redundant connections to allow for the future installation of additional optical cable network lines. The newly established substructure network is to be equipped with optical cables by the respective service providers.
The development of the stormwater drainage system
The stormwater drainage system serving the Northwestern Economic Zone was implemented in phases, segmented into two technically distinct units. In the first phase, the open T-1 retention pond was constructed, while the second phase involved the implementation of the closed CS-1 stormwater drainage channel.
The stormwater accumulating on the 400+100-hectare greenfield investment area and the constructed road network is directed into the T-1 retention pond via large-diameter culverts and a combination of closed and open earth ditches formed as part of the internal road network. The CS-1 closed channel ensures continuous and uninterrupted drainage from the T-1 retention pond, facilitating the discharge of stormwater from the industrial park to the final natural recipient, the Látóképi Reservoir. For roads still under construction, closed and open earth ditches will also ensure the proper drainage of stormwater.
Development of gas supply infrastructure
To meet the capacity needs of the Industrial Park, a new gas supply pipeline was installed from the Debrecen-Józsa delivery point. The gas supply network mostly runs along unpaved and utility-free farm roads.
Development of water supply infrastructure
To ensure a reliable water supply for the entire economic zone, a D355 diameter transmission pipeline was constructed. This pipeline begins with a connection to the NA400 public water pipeline on Balmazújvárosi Road in Debrecen and extends along agricultural roads, crossing Main Road 354 and the Motorway M35 to reach the industrial area. As part of the project, a pressure-boosting station was constructed and connected to a D355 water pipeline that links to the Debrecen-Kismacs area, enhancing the area's water supply. The water supply for consumers moving into the economic zone is provided by D355 mm and D255 mm diameter main pipelines located beneath the road network The main pipeline that supplies the 100-hectare development area, as well as the D225 water pipeline that improves the supply of the Debrecen-Nagymacs settlement by providing dual-sided supply, branches off from this water pipeline.
Development of wastewater infrastructure
To ensure wastewater drainage for the entire economic zone, a D315 mm diameter sewer pipe has been constructed. This pipe runs along agricultural dirt roads, crosses Main Road No. 354 and Motorway M35, and reaches the industrial area. It connects to the main wastewater pumping station within the economic zone, located at the southern boundary of BMW’s plant.
For the wastewater drainage of the 100-hectare investment area, a D200 mm diameter gravity sewer system is being constructed. This system connects to the DN200 gravity sewer pipe located in the centre of the outer lane of the asphalted road on the northern side of BMW’s plant, which then links to the third wastewater pumping station built alongside the north-western boundary of BME’s plot. From there, a D225 pressure sewer pipe has been constructed to the southern main wastewater pumping station. This station also connects to the wastewater drainage system of Debrecen-Nagymacs, thereby enhancing the security of the service for the settlement.
