GENERAL KNOWLEDGE

Detailed explanation-1: -The BWR uses enriched uranium as its fuel, with an enrichment level of around 2.4% uranium-235. This fuel is placed into the reactor in the form of uranium oxide pellets in zirconium alloy tubes. There may be as much as 140 tonnes of fuel in 75, 000 fuel rods. Refueling a BWR involves removing the top of the reactor.

Detailed explanation-2: -Uranium is the most widely used fuel by nuclear power plants for nuclear fission. Nuclear power plants use a certain type of uranium-U-235-as fuel because its atoms are easily split apart. Although uranium is about 100 times more common than silver, U-235 is relatively rare at just over 0.7% of natural uranium.

Detailed explanation-3: -Highly Enriched Uranium – contains a 235U concentration greater than 20 percent. Highly enriched uranium (HEU) is used in naval propulsion reactors, nuclear weapons and in some research reactors.

Detailed explanation-4: -Enrichment. The vast majority of nuclear power reactors use the isotope uranium-235 as fuel; however, it only makes up 0.7% of the natural uranium mined and must therefore be increased through a process called enrichment.

Detailed explanation-5: -Enriching Uranium The nuclear fuel used in a nuclear reactor needs to have a higher concentration of the U235 isotope than that which exists in natural uranium ore. U235 when concentrated (or “enriched") is fissionable in light-water reactors (the most common reactor design in the USA).