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Occupational Health and Safety Act, 1993 (Act No. 85 of 1993)

Guidance Notes

Driven Machinery Regulations, 2015

13. Rolls and calender rolls


The user shall, where practicable, cause every power-driven machine consisting of calender rolls or incorporating two or more rolls rotating in opposite directions that are less than 75mm apart and where the in-running side or nip of the rolls is within the reach of persons, to be guarded for the full length of such nip with—

(a)        a fixed guard; or

(b)        a trip bar, a cable or an electronic sensing device not more than 300 mm from the nip that will stop or reverse the rotation of the rolls if the bar or cable is touched or if the danger area is invaded by any foreign object:

provided that where it is not practicable to install any of the specified devices an inspector may require or permit any other means of protection at the intake of the rolls.



(a) Rotating rolls could cause serious injury to hands and or arms and in some instances death. The objective of the tripping devices consisting of tension cables or wires tripping rods and bars as well as micro switch and optical beams protecting devices installed in closed proximity to these pinch points to prevent injuries to the persons operating these machines.
(b) To avoid injuries persons who are not trained should be made aware of the dangers and are not allowed to operate or use this machinery.
(c) Tripping device means a device designed to stop the machine when a foreign object comes in close proximity with a pinch point.
(d) Nip/Pinch point is that part of the machine which can cause injury if a person comes into contact.