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A typical PWR has fuel assemblies of 200 to 300 rods each, and a large reactor would have about 150–250 such assemblies with 80–100 tons of uranium in all. Generally, the fuel bundles consist of fuel rods bundled 14 × 14 to 17 × 17. A PWR produces on the order of 900 to 1,600 MW e. PWR fuel bundles are about 4 meters in length. [21]
Generally, the fuel bundles consist of fuel rods bundled 14×14 to 17×17. PWR fuel bundles are about 4 m (13 ft) long. In PWR fuel bundles, control rods are inserted through the top directly into the fuel bundle. The fuel bundles usually are enriched several percent in 235 U.
Average core power density, MW/m 3: 10.13 12.1 Fuel Sintered Natural UO 2 pellets Cladding tube material Zircaloy-2 Zircaloy-4 Fuel assemblies 3672 5096 4704 fuel bundles in 392 channels Number of fuel rods in assembly 19 elements in 3 rings 37 37 elements in 4 rings Enrichment of reload fuel 0.7% U-235 Fuel cycle length, Months 24 12 12
Average fuel power density 9.24 KW/KgU - 235 MW/m 3: Average core power density, MW/m 3: 10.13 - 12.1 Fuel Sintered Natural UO 2 pellets Cladding tube material Zircaloy-2 Zircaloy-4 Fuel assemblies 3672 5096 4704 fuel bundles in 392 channels Number of fuel rods in assembly 19 elements in 3 rings 37 37 elements in 4 rings Enrichment of reload ...
Average core power density, MW/m 3: 10.13 12.1 Fuel Sintered Natural UO 2 pellets Cladding tube material Zircaloy-2 Zircaloy-4 Fuel assemblies 3672 5096 4704 fuel bundles in 392 channels Number of fuel rods in assembly 19 elements in 3 rings 37 37 elements in 4 rings Enrichment of reload fuel 0.7% U-235 Fuel cycle length, Months 24 12
Generally, the fuel bundles consist of fuel rods bundled 14x14 to 17x17. PWR fuel bundles are about 4 meters in length. The zirconium alloy tubes are pressurized with helium to try to minimize pellet cladding interaction which can lead to fuel rod failure over long periods. In boiling water reactors, the fuel is similar to PWR fuel except that ...
Inside the core of a typical pressurized water reactor or boiling water reactor are fuel rods with a diameter of a large gel-type ink pen, each about 4 m long, which are grouped by the hundreds in bundles called "fuel assemblies". Inside each fuel rod, pellets of uranium, or more commonly uranium oxide, are stacked end to end.
The fuel element or assembly is arranged in an array of cells or bundles. Each bundle consists of multiple fuel rods or pins. Each fuel rod is composed of several cylindrical fuel pellets of enriched uranium, typically as UO 2 inserted into zirconium-alloy tubes. Each reactor core can be loaded with multiple bundles of these reactor bundles.