Before you read about how the Indian reactors are unsafe and how we should not go ahead with the nuclear program, here goes.
We have 20 reactors in India. 18 being pressurized heavy water reactors and 2 boiled water reactors. Japan uses the latter.
While there are audits running as we speak, the Kakrapar atomic station and Madras Atomic station have withstood the earth quake of 02 and tsunami of 04 respectively. So clearly they have been built to last.