Mandatory Action Symbols: This type of safety symbol conveys actions that should be taken to avoid hazards. If a surround shape is desired, the symbol consist of a white image within a solid blue or black circular surround shape. The blue surround shape is required on ISO compliant product safety labels that contain mandatory action symbols. The image below shows some examples from our Safety Symbol Database.

i think it become proper when we standardize the symbol use on safety hazard. just to easy recognized of the person what it is all about say.
Posted by: osha 10 hour training | July 12, 2011 at 07:23 AM