This standard applies to all machinery (stationary and mobile) where fixed means of access are necessary. This standard applies to stairs, step ladders and guard-rails which are a part of a machine. This standard may also apply to stairs, step ladders and guard-rails to that part of the building where the machine is installed, providing the main function of that part of the building is to provide a means of access to the machine. NOTE This standard may be used also for means of access which are outside the scope of this standard. In those cases the possible relevant national or other regulations should be taken into account. This standard applies also to stairs, step ladders and guard-rails specific to the machine which are not permanently fixed to the machine and which may be removed or moved to the side for some operations of the machine (e.g. changing tools in a large press). For the significant hazards covered by this standard, see clause 4 of EN ISO 14122 -1.