Most people involved with workplace safety are very aware of the iceberg theory.  
Its very simple. For every recorded incident sitting above the surface, there are many unrecorded near misses submerged below the surface.
Capture the near misses and act on the causes in order to reduce or eliminate actual incidents occurring.
In most companies an incident results in a rigorous Incident Report, an inquest into why the incident happened and actions to prevent it from happening again.  
All well and good and very necessary

Preamble
I have worked in many companies that I would describe as extremely safety focused and yet they still have incidents.  The incident investigation will always reveal a cause.  Some causes are more obvious than others but there is always a preventable cause.  It may be human,  it may be equipment, it may be process.  But always preventable.

Addressing the fact that workplace incidents can be prevented through design, such as during the designing and construction of a new manufacturing plant, the American Society of Safety Engineers’ (ASSE) recently launched an initiative to establish guidelines for better workplace design.

Similarly, there are major opportunities for improvement by developing better Design for Inherent Safety for construction sites

The United Arab Emirates (UAE) pays high attention to security and safety at its planned nuclear facilities and will try to prevent any emergency and crisis, the official news agency WAM reported Tuesday, citing an official.

As more and more countries push forwards with nuclear facilities, designers and suppliers are set for rich rewards.  The old order is again being challenged by Asian powerhouse engineering exporters such as South Korea.  With 1,400 new nuclear plants forecast to be built by the year 2050 there is significant market potential.

Nuclear power provides a "nominally" clean source, but the real potential for catastrophic danger is in the operation, maintenance and design.

Preamble
All too often, people switch off the safety mindset when they leave their place of work .  Whether at work or not, there is a need to think and act safely, always.  Because of the high safety focus in most industrial work situations, there is a tendency for people to “switch off”, when not in the work environment.   It is very common for the mindset to be  “at work  = high danger, non work places = low to zero danger”.  Of course the reality is that danger is lurking everywhere and we need to think and act accordingly.