Agreed, but one of the key reasons plants are so expensive is to ensure that power workers are exposed to much less radiation than flight attendants. The fact

Agreed, but one of the key reasons plants are so expensive is to ensure that power workers are exposed to much less radiation than flight attendants. The fact that even a small amount of discharged radiation can cause damage makes everything more expensive for those companies, not just design and certification of the reactor itself but also liability insurance.