1) An employer shall ensure that –
a) all diving equipment and machinery which is used in connection with any diving operation or underwater work are designed, manufactured and maintained in accordance with Health and Safety Standard, used properly and kept in good working order;
b) plants and equipment necessary for divers to safely enter and leave the water are available during diving operations;
c) a compression chamber with all necessary ancillary equipment is available for immediate use whenever diving takes place at a depth exceeding –
i) fifty metres;
ii) ten metres, but not exceeding fifty metres where the routine decompression time exceeds twenty minutes; or
iii) ten metres, but not exceeding fifty metres where the routine decompression time is twenty minutes or less and effective arrangements have not been made for a diver requiring therapeutic recompression to be brought to a suitable chamber within two hours from the time when the need for recompression is identified; and
d) each compression chamber registered before 4 January 1991, if it is maintained in accordance with regulation 9(4) of these Regulations, may be used until it is no longer useful.