ICGB, the company developing the Gas Interconnector Greece-Bulgaria project, said that it has ranked first the 5.67 million euro ($6.43 million) offer from the TIBEI consortiumin its tender for selecting an owner's engineer for the project.TIBEI comprises Belgium's Tractebel Engineering S.A, Italy's Tractebel Engineering SRL, Austria's INTBER GMBH and Bulgarian companies Ipsilon Consult and Bulgaria Engineering, ICGB said in a statement on Friday."The commitment involves assisting the Contracting Entity in the implementation of the project during the construction phase until the pipeline enters into operation and management of all the main contracts related to the project - including the contract for the supply of line pipes and the contract for the award of design, procurement and construction," ICGB said.The tender attracted 12 offers, four of which advanced to the evaluation stage of the public procurement procedure. Besides TIBEI, the other three offers proceeded to the final stage came from Enereco S.p.A, Technip Italy Direzione Lavori, and C&M-Asprofos-S Energy-Miks.The IGB pipeline, which has a total estimated cost of some 220 million euro, will connect the Greek gas transmission system in the area of Komotini to the Bulgarian gas transmission system in the area of Stara Zagora.