(i) Area uses or permit exposure to radiation should be Marked' Restricted Area 'or Radiation zone etc.
(ii) Avoid x-rays of chest and lower back in routine physical examination.
(iii) Radio active wastes should be changed into harmless form or stored in deep layers of the lithosphere where their gradual harmless decay can take place.
(iv) X-ray equipment of highest quality should be used and maintained by qualified technicians.