After watching the video, it's important to think
that nuclear workers have to take care of every barrier
as it were the last one.
As if we were an American football team,
everybody is involved when defending.
In nuclear safety culture, it's important to think
in all the different protection levels,
and be aware of the importance of all the safety systems,
behaviors, procedures and rules.
Even if all the safety components are designed
under the criterion of single failure,
or even taking into account the redundancy of different systems,
the nuclear power facilities have very particular
and special characteristics.
And that is why it's very important to take care of nuclear safety culture.
After this overview, we can continue with the study
of the differentiating characteristics of nuclear power.
And we will understand the necessity of different barriers
and safety levels.
After that, in unit 3, we will see how to implement
all those levels and barriers in order to achieve
a safety culture as good as possible.