This document deals with all significant hazards, hazardous situations and events as listed in Clause 4, which are relevant to machines used to calibrate and/or to sand panels and/or linear work-pieces consisting of solid wood and material with similar physical characteristics to wood, gypsum boards and gypsum bounded fibreboards, fitted with an integrated feed and sanding belt(s) positioned over and/or under the work-piece level and working in the panel feed direction, hereinafter referred to as machines , when they are operated, adjusted and maintained as intended and under the conditions foreseen by the manufacturer including reasonably foreseeable misuse. Loading and/or unloading is manual or automatic. Also transport, assembly, dismantling, disabling and scrapping phases are taken into account. The following facilities can be provided: Transversal sanding unit Cleaning brushing unit Satining roller unit Disks brushing unit Texturing brushing roller unit Texturing brushing belt unit Cutterblock unit Band saw unit Spiked roller unit Antistatic bars Conveyors directly controlled by the machine Additional workpiece vacuum clamping This international standard does not deal with any hazards relating to: a) infeed and outfeed openings of machines with a work-piece height capacity greater than 550 mm; b) systems for automatic loading and unloading of the work-piece to/from a single machine other tan conveyors directly controlled by the machine; c) interfacing of the machine with any other machine; d) chemical properties of gypsum based products dust regarding health. This document does not apply to: 1) machines intended for use in potentially explosive atmosphere; 2) machines manufactured before the date of its publication as an international standard.