Systems Thinking Safety Analysis: Nuclear Security Assessment of Physical Protection System in Nuclear Power Plants

Table 3

Time for each step.

Path for sabotage	Detection	Action
Pass of fence	Immediately	Over several minutes
Pass of outer door	~minutes	Over several minutes
Pass of wall	Minutes~hours	Up to 1 hour
Pass of inner door	Over hours	Up to 1 hour
Attack of target	Over hours	Impossible