This worker isn’t laying down on the job, they are reaching underneath the guarding. Whether it is it retrieve something dropped, general cleaning, or some other reason, the gap between the perimeter fence and the floor needs to prevent access to the hazards both by reaching and/or crawling underneath the guarding.
In Canada, the CSA Z432 Safeguarding of Machinery standard calls for a gap of no more than 15cm to prevent access by crawling underneath a perimeter fence. I’ve long suspected this number is based on the 14.4cm head breadth of the 5th percentile adult female*
*NASA-STD-3000/VOL.1/Rev.B – doesn’t everyone keep a copy of NASA human factors design standards from 1995 around for light reading?
