Regulation 6(4)(a)
Every existing place of work or means of access or egress at height shall –
(a)be stable and of sufficient strength and rigidity for the purpose for which it is intended to be or is being used;
(b)where applicable, rest on a stable, sufficiently strong surface;
(c)be of sufficient dimensions to permit the safe passage of persons and the safe use of any plant or materials required to be used and to provide a safe working area having regard to the work to be carried out there;
(d)possess suitable and sufficient means for preventing a fall;
(e)possess a surface which has no gap –
(i)through which a person could fall;
(ii)through which any material or object could fall and injure a person; or
(iii)giving rise to other risk of injury to any person, unless measures have been taken to protect persons against such risk;
(f)be so constructed and used, and maintained in such condition, as to prevent, so far as is reasonably practicable –
(i)the risk of slipping or tripping; or
(ii)any person being caught between it and any adjacent structure;
(g)where it has moving parts, be prevented by appropriate devices from moving inadvertently during work at height.