Standards and codes are based on reaching a consensus, which in effect is a minimum on which all participants can agree. In addition, not all situations are covered in the standard.  Therefore risk assessments are vital or the level of risk achieved via compliance may be far from acceptable. 

Hierarchy of Controls:
Elimination – Remove hazard in design process
Elimination by redesign – Reduce hazards through redesign
Engineering controls – Safety guards
Warning systems – Automatic & manual warning systems
Administrative controls - Inspections and training