-Fuel: Enriched UO2 (%3.1)
-Coolant: Water
-Moderatör: Water
BWRs are the second reactors used after pressurized water reactors(PWR). The most prominent feature of the coolant is water at about 285˚C and the pressurized water is passed through the dryers under a lower pressure than the reactor, separating the water droplets that can be carriedd with the steam and the steam generated is sent directly to the turbine.
Refrigerant Water Cycles in BWR
BWRs consist of 2 water loops and auxiliary systems. In the first loop, take the energy in the heart of reactor the water in the first cycle takes the energy formed in the heart of the reactor and evaporate. As a result, water transports energy to the turbine as steam.
BWR First Coolant Cycle
The first loop on BWR;
-Heart of Reactor
-Turbine-Generator
-Condenser
-Front heater
-Pumps.
Since the steam produced in this cycle goes directly to the turbine generator, the coolant is called “feed water”. With the help of pumps, the coolant flows into the reactor vessel where nuclear fuel is located, from bottom to top, onto the fuel elements. As a result of this process, the produced nuclear energy evaporates the coolant.
The generated steam passes through the main steam piplines an passes through humidity settings and and steam dryers to the türbine-generator building. Then it will hit the blades of the türbine here to provide electrical energy in the generator. District under the türbine is a condenser with this the transforming thr steam to water. Aid with the pumps come to the front heater and go to reply to steaming in the heart of the reactor.
BWR Second Coolant Cycle
The second loop on BWR;
-Condenser
-Pump
-Cold Water Source
-Related Pipe Systems
Steam, which loses its energy by hitting the turbine blades, goes to the condenser and returns to its former state with cold water taken from the sea.
Other Systems in BWRs
Steam from the refrigerant entering the reactor inn BWR plants is usually radioactive sinceit is sent to the turbine. So there is a protection shell around the turbine building. The reactor building is also equipped with a second protection shell to prevent radioactive substances from mixing into the air in the event of an accident. If the steam comes out of the first cycle, there is a poor filled with water under the reactor vessel to absorb the energy of the steam.
