Final answer:
The two nuclear accidents that occurred are the Chernobyl accident in the former Soviet Union (now Ukraine) in 1986 and the Daiichi nuclear disaster in Japan in 2011. To prevent such accidents in Canada, strict safety regulations and protocols should be implemented and followed.
Step-by-step explanation:
The two nuclear accidents that occurred are the Chernobyl accident in the former Soviet Union (now Ukraine) in 1986 and the Daiichi nuclear disaster in Japan in 2011.
The Chernobyl accident was caused by a series of safety system failures during a routine test, which led to a reactor core explosion and the release of a large amount of radioactive materials. The Daiichi nuclear disaster was triggered by a 9.0 magnitude earthquake and a subsequent tsunami that caused a loss of power supply and failure of cooling systems, resulting in multiple reactor meltdowns.
To prevent such accidents in Canada, strict safety regulations and protocols should be implemented and followed. Regular maintenance, inspections, and upgrades should be carried out on nuclear power plants. Emergency response plans should be in place, and staff should be trained to handle potential accidents effectively.