Bulgaria – Dam construction work – Увеличаване на обема на долния изравнител на ПАВЕЦ „Чаира“ с изграждане на язовир „Яденица“ и реверсивен напорен тунел за връзка с язовир „Чаира“, реф. № 26ИП-Р19А101

The subject of the public procurement contract includes the execution of construction and installation works and the preparation of executive documentation for the object: "Increasing the volume of the lower equalizer of the Pumped Accumulation Power Plant (PAP) "Chaira" with the construction of the reservoir "Yadenitsa" and a reversible pressure tunnel for connection with the reservoir "Chaira". The main sub-objects of the project are: • Reservoir dam and adjacent facilities including Injection gallery; Shaft spillway with discharge gallery, rapid flow and energy dissipater; Main outlet; Control and measuring system; Small hydroelectric power plant on ecological waters; Embankment for strengthening the bank of the reservoir lake in the zone of Yadenishki fault; Strengthening of landslide in the area of the temporary explosive warehouse on the site "Yadenitsa"; Anti-erosion protection of the slope above the energy dissipater of the dam to the path for connection with the crown of the wall; Anti-erosion protection of excavation slopes of the operational road along the left bank of r. Yadenitsa, section from km 4+860 to km 5+770; Correction of r. Yadenitsa after the dam; Connection of permanent facilities (consumers) to the 20 kV regional network during the operation period and standby power supplies; • Reversible pressure tunnel and adjacent facilities with sub-objects: Reversible pressure tunnel; Entrance facility "Yadenitsa"; Shaft "Yadenitsa", Shaft "Chaira"; Systems for filling and emptying the tunnel with apparatus chamber and tunnel for access to the apparatus chamber; Access window to the reversible pressure tunnel; Relocation of the water supply for PAP "Chaira" from Manavsko Dere; • Operational roads; • Service building; Physical protection system. The execution of the contract will be carried out in accordance with the prepared and approved by the Beneficiary and the Ministry of Regional Development and Public Works working project, the technical specification, incl. additional technical requirements of the Beneficiary for the contract. The working project for the execution of the object, with additional instructions regarding costing and technical requirements will be provided with the invitation to participate to the admitted candidates - for the preparation of an offer.