The employer shall ensure at a construction site of a building or other construction work that,—
(a) fixed lifting appliances are installed—
(i) by competent persons;
(ii) in a manner that such appliance cannot be subjected to vibration or other influence;
(iii) in a manner that such appliance cannot be displaced by the load, is not exposed to danger from load, ropes or drums;
and
(iv) in a manner that the operator can either see over the zone of operation or communicate with all loading and unloading points by signal or other communication system;
(b) adequate clearance is provided between parts of loads of lifting appliances and—
(i) the fixed objects, such as walls and posts; or
(ii) electrical conductors;
(c) the lifting appliances, when exposed to wind loading, are provided with stability and rigidity to withstand such loading safely; and Section 40 (2) (e) Section 40 (2) (e) 21
(d) no structural alterations or repairs are made on any part of the lifting appliances that affect the safety of such appliances without obtaining the approval of the competent person to this effect.