Front End Engineering Design (FEED) & Environmental Impact
Assessment for the Natural Gas Interconnection Greece – Bulgaria
(IGB Project)


The IGB pipeline will transport natural gas over the border between Greece and Bulgaria, connecting the existing Komotini Station in Greece with an existing gas pipeline near the Bulgarian town of Stara Zagora with a transportation capacity of appr. 3 bNcm/y.
The project will contribute to increase the energy security of supply by diversifying the routes and sources for gas imports into Bulgaria, Greece and further into South East Europe, allowing gas imports from Caspian and Middle East Sources.
The project consists of the following main facilities and components:

  • 182 km of 32 inch diameter high-pressure gas pipeline with a reverse flow option
  • 9 No. Block Valve Stations
  • Two Terminal Scraper Stations
  • Two Gas Metering Stations at Komotini and Stara Zagora
  • Two offtakes and Automated Gas Regulation Stations at the Bulgarian towns of Kardjali and Dimitrovgrad
  • Provision for future Compressor Facilities
  • A dedicated SCADA / Control and Telecomminications facilities for the new Pipeline System
  • One Dispatch / Operational and Maintenance Base in Bulgaria

Provided Services

C&M provided the following services as partner in Consortium:

  • Front End Engineering Design (FEED)
      • Site Survey & Final Definition of Pipeline Routing in Greece
      • Site selection for Stations / AGIs in Greece
      • Detailed Survey  / Cadastral Documentation in Greece
      • Geological / Geotechnical Researches & Investigation in Greece
      • Seismic Studies
      • Pipeline Alignment Sheets
      • Site Layouts / Architectural, Civil/Structural, Building Mechanical Installations /Utilities Design of BVS/ AGIs
      • Site Layouts & Piping Arrangements for BVS, Scraper Stations & AGIs
      • Electrical & Surge / Lightning Protection Design
      • Cathodic Protection System & Pipe Integrity Design
  • Environmental Impact Assessment Study in Greece
  • Consultation with Authorities / Permits Acquisition in Greece
  • Project Cost Estimate in Greece / Implementation Time Schedule
  • Tender documents (ITT Package) preparation for EPC contract

Project  Budget:  € 160 million
Services  Implementation Period: 2011 – 2013