The Client: «ALSTOM POWER»

“Arpa-Sevan” OJSC was involved in implementation of civil works in the framework of “Rehabilitation of Kanaker HPP” on the following projects:
I. Diversion structures (DM 0+00 ¸ DM 123+35) – the diversion canal, tunnels №№1 and 2, Daily Pond before the gates, peak canal, forebay, settling basin, engineering structures (bridges, super passages, outlets);
II. Main Weir – water intake structures, pedestrian bridge, access bridge, cleaning of the channel of the Hrazdan River at the Headrace and Tailrace, left-bank training wall, shotcrete works;
III. Cable Gallery- hydraulic sealing of covering;
IV. Penstock – shotcrete over anchor supports, cleaning of the ravin and installation of metallic stairs;
V. HPP building,- foundations of №5 and №6 generators and of the compressor, floorings of the engine room, turbine hall and of erection site; the tailrace canal and suction chambers, sanitary and finishing works; technical water supply of the units, the storage, the platforms and roads;
VI. 110 kV Switchyard,- foundations under the equipment of №5 and №6 transformers bay, and of the measurement bay, arrangement of pits and foundations under transformers units №5 and №6, substation grounding system, rehabilitation of cable galleries;
VII. 35 kV Switchyard – dismantling, mounting of auxiliary equipment, developing of area;
VIII The chute of no-operation spillway.

Some difficulties were noted while implementing the works on acting operated facilities, as well as on the diversion canal and connected engineering structures with water in place, supplied to water users for irrigation, and negative ambient temperature in the winter time.
As a whole the following main scope of works has been implemented at scheduled times: