The Trans-Adriatic-Pipeline (TAP) has issued its fourth contract notice.
The notice was published in the EU Gazette, the official journal of the EU, TAP said on June 27.
The scope for this contract will include manufacturing, delivery, engineering, installation and pre-commissioning of the turbo compressors.
"Six turbo compressors will be purchased for installation on two compressor stations - three for a compressor station in Albania near Fier, and three for a compressor station in Greece near Kipoi," TAP said.
The compressor stations will be built in accordance with the international industry standards on health and safety, located at a significant distance away from highly populated areas, causing minimum impact on the environment and local communities.
Companies interested in being pre-qualified for this contract need to request a pre-qualification questionnaire from TAP no later than July 14, 2014.
The potential suppliers need to demonstrate that their equipment is "proven technology", which has been successfully used on compressor stations similar to TAP's.
The current pre-qualification is the fourth one, following contract notices on construction of Albanian roads and bridges, onshore pipeline construction in Greece and Albania, construction of compressor stations in Greece and Albania.
The next contract notices to be issued by TAP over the next three months will include the pre-qualification of companies supplying Large Diameter Valves and steel line pipes for onshore section of TAP.
The Shah Deniz field, one of the world's largest gas-condensate fields, was discovered in 1999. Its reserves are estimated at 1.2 trillion cubic meters of gas. Overall, the field has proven to be a secure and reliable supplier of gas to Azerbaijan, Georgia, Turkey, and Europe.
The gas which will be produced at the second stage of Azerbaijan's Shah Deniz field development will be the main source of the Southern Gas Corridor, which envisages the transportation of the Caspian gas to European markets.
The Shah Deniz consortium announced the selection of TAP as the main route for transporting its gas to Europe in late June. Another pipeline which was vying for Azerbaijan's gas transportation to Europe was Nabucco West.
Azerbaijan agreed to sell over 10 billion cubic meters of natural gas a year from the second phase of its Shah Deniz development to nine companies in the European Union in September 2013.
The contracts were signed for 25 years between SOCAR and the European utilities, including Axpo Trading AG, Bulgargaz EAD, Depa, Gas Natural Fenosa, Hera Trading Srl, Shell Energy Europe, Enel SpA, E.ON SE, and GDF Suez SA.
The initial capacity of TAP will amount to 10 billion cubic meters per annum with the possibility of expanding to 20 billion cubic meters per annum. The TAP's construction project is planned to start in 2015.