174.The permit holder must ensure that every staff member directly assigned to work under x-rays has undergone a medical examination when hired including:
(a) an anamnesis directed towards the risks to which the employee may be exposed and relating to:
i. the possible existence of hereditary diseases or defects;
ii. possible blood count abnormalities; and
iii. an estimate of occupationally derived x-ray dose equivalents received previously. If, for a given period of the professional life of a person, previously directly assigned to work under x-rays, the accumulated dose equivalent is not known with certainty, it shall be considered equal to the maximum permissible dose prescribed in Schedule 8 corresponding to such period;
(b) a physical examination; and
(c) a full blood count including red blood cell, white blood cell and platelet counts and a differential blood count.