Kakrapar Atomic Power project (KAPP3)

1. It is the largest indigenously developed 700-megawatt electric (MWe) nuclear power reactor unit in Gujarat attained it first criticality in 2020, has started operations in 2023.
2. First criticality signifies the initiation of a controlled, but sustained nuclear fission reaction in the nuclear power plant.
3. It is a variant of the Pressurised Heavy Water Reactor (PHWR) which uses natural uranium as fuel and heavy water as the moderator.
4. The power plant also addresses the excess thermal margins
5. Thermal margins refer to the extent to which the operating temperature of the reactor is below its maximum operating temperature.