CARVIS.KR

The rotor pace is 3000 rpm. The rated pump supply is 8500 cu.m/h at a head of 200 m w.g., velocity - a thousand rpm, electric motor output - 5500 kW. By bundling radio-frequency (RF) energy on the identical line with an electric present, shield control cable data could be transmitted with out the need for a separate information line. The condensate of the steam spent in the turbines is conditioned in the ion-exchangers, heated in the heat exchangers of the regenerative heating system, deaerated and on passing by way of strainers is fed again by the electric feedwater pumps over feed pipelines to the separators of the circulating circuit. The supply pipelines convey water from the principle circulating pumps to the stress header. The tools and pipelines are protected against excessive pressure rise by a system of steam dumping facilities which dump excess steam into the turbine condensers or into the condensation swimming pools of the accident isolation system.

The circulating circuit of the reactor is a system composed of gas channels, steam/water and water lines, steam separators, essential circulation pumps, stress, suction and distribution headers with related piping. The sunshine water circulates over a closed circuit. The Ignalina nuclear power plant, like all stations with RBMK reactors, has a direct cycle configuration - saturated steam formed in the reactor proper by passing the light water via the reactor core is fed to the turbine at a pressure of 6,5 MPa. Light water coolant is fed into the decrease finish of the fuel channels. The coolant move distribution among the many gasoline channels as a function of the core energy release is controlled by shutoff control valves following the indications of movement meters mounted at the inlet of water provide line to each gasoline channel. Each loop comprises two horizontal sort steam separators interconnected on the water and steam sides. Steam is conveyed from every separator to the turbines over two steam traces. The steam piping is so arranged that every steam separator is connected with two turbines. The turbines are double-circulate tandem machines (one excessive-stress cylinder and four low-stress cylinders) with reheat. The thermal power output of 1 unit is 4800 MW, the electrical energy capacity is 1500 MW.

Each unit comprises two K-750-65/3000 turbines with 800 MW generators. The unit with one reactor incorporates two 750 MW turbines. The turbines are controlled by cumputer-based management system ASUT-750. 40-43 water supply lines are branched off every distribution header. The biological shield is made of carbon steel, serpentine crushed stone and gravel, concrete, sand, water. The gasoline channels are tubes whose lower and upper parts are fabricated from corrosion-resistant steel, while the central half is manufactured from Zircalloy. The vertical graphite stack columns contain gasoline channels and management rod channels. The graphite stack is carried by a welded steel construction resting on a concrete foundation. The principle structural element of the reactor, a graphite stack with gas channels, absorber-rods and surrounding steel buildings, is housed in a concrete vault. On top the graphite stack is spanned over by an upper steel structure resting on the annular water tank of the biological shield.

The cut up graphite rings in the channels present thermal contact with the graphite bricks of the stack. Provision is made to change the gas channels and management rod channels on the shut-down and cooled reactor. A welded shell enclosing the graphite stack, as nicely as the upper and bottom steel buildings type a sealed reactor area. To stop graphite oxidation and to improve heat switch from graphite to fuel channels, the reactor house is full of a helium-nitrogen mixture. From the gas channel the coolant within the type of steam/water mixture goes into the separators. Each gas meeting incorporates 18 gas rods in the form of sealed Zircalloy tubes that are crammed with uranium dioxide pellets. Welding cable is suitable for welding purposes on assembly lines, building and shipbuilding. The suction and pressure headers of each loop are interconnected by six bypass strains, every provided with a cease gate and a check valve.