The Black Sea Coast Podișor Natural Gas Pipeline, to which Kalyon İnşaat contributes, is one of Europe's longest gas transmission projects, with a total length of 308 km and pipeline diameters of 48 and 40 inches.
Oil and Natural Gas Projects
Black Sea Coast to Podișor Natural Gas Pipeline
Black Sea Coast to Podișor Natural Gas Pipeline
An international transmission line carrying Black Sea gas to European markets
Romania, the pipeline extending from the Black Sea coast to Podișor
2026
General Information
Location
Romania, the pipeline extending from the Black Sea coast to Podișor
Client/Employer
Transgaz (Romanian State Natural Gas Company)
Project Scale
A high pressure natural gas pipeline totaling 308 km: 32 km of 48 inch and 276 km of 40 inch pipe
Infrastructure Components
Steel pipes with diameters of 48” and 40”3 pigging stations2 metering stations integrated into valve stations15 valve stationsPower supply infrastructureCathodic protection systemsFibre-optic communication linesA 1,815 m crossing beneath the Danube RiverA 1,300 m crossing beneath the Borcea River
Project Duration
2019 to Present; to be delivered in 2025
Function
Safe, continuous transport of natural gas produced in the Black Sea through Romania to Europe.
Key Feature
A line critical to European energy security, included on the European Union's Projects of Common Interest list
Architectural and Engineering Details
Technologies and Innovations Used
Project Stages
Construction Stages
01
Route clearance and ground preparation
02
Transporting and stringing pipes on site
03
Welding, coating and pressure testing of 48 and 40 inch pipes
04
Construction of pigging, metering and block valve stations
05
Line commissioning and testing operations
06
Installation of power, cathodic protection and fiber optic lines
07
A total of 4,060 meters of horizontal directional drilling (HDD) crossings beneath the Danube, Borcea and Argeș rivers and an archaeological site
08
Testing and commissioning of the line
Solutions
Managing multiple sites along the 308 km route accelerated the process.
Pipeline welds underwent 100% radiographic and ultrasonic testing.
Special geotechnical methods reduced environmental impacts at river crossings.
Sustainability
Energy and Resource Management
Low carbon steel was preferred in pipe production.
Low emission machinery and modern equipment were used during construction.
Water and Ecosystem Management
Studies were conducted to protect biodiversity at the Danube crossing.
Construction was scheduled outside fish migration periods.
Waste Management and Material Use
Excavation and construction waste was separated for reuse and recycling.
Waste from welding and coating was disposed of safely.
Reducing Environmental Impacts
Noise, vibration and water quality were continuously monitored.
Local labor and material procurement were prioritized, reducing the carbon footprint of logistics.
Long Term Sustainability
Annual line capacity exceeding 12 billion m³ will contribute significantly to Europe's energy needs.
Cathodic protection and fiber optic monitoring increased the line's service life and safety.
Inclusion on the European Union's Projects of Common Interest (PCI) list made the project one of the strategic investments supporting European energy supply security.
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