^§ 835.401  General requirements. 





 
§ 835.402  Individual monitoring. 

 


  (a) For the purpose of monitoring individual exposures to 
external radiation, personnel dosimetry shall be provided to 
and used by: 
  (1) Radiological workers who, under typical conditions, are 
likely to receive one or more of the following: 
  (i) An effective dose equivalent to the whole body of 0.1 
rem (0.001 sievert) or more in a year; 
  (ii) A shallow dose equivalent to the skin or to any extremity 
of 5 rems (0.05 sievert) or more in a year; 
  (iii) A lens of the eye dose equivalent of 1.5 rems (0.015 
sievert) or more in a year; 
  (iv) A deep dose equivalent from external exposures to any 
organ or tissue other than the lens of the eye of 5 rems (0.05 
sievert); 
  (2) Declared pregnant workers who are likely to receive from 
external sources a dose equivalent to the embryo/fetus in excess 
of 10 percent of the applicable limit in § 835.206; 
  (3) Minors and members of the public likely to receive, in 
1 year, from external sources, a dose in excess of 50 percent 
of the applicable limits in § 835.207 or § 835.208, respectively; 
or 
  (4) Individuals entering a high or very high radiation area. 
  (b) Personnel external dosimetry programs shall be adequate 
to demonstrate compliance with § 835.202, including routine 
dosimeter calibration and conformance with the requirements 
of the DOE Laboratory Accreditation Program for Personnel Dosimetry. 
  (c) For the purpose of monitoring individual exposures to 
internal radiation, internal dose evaluation programs (including 
routine bioassay programs) shall be conducted for: 
  (1) Radiological workers who, under typical conditions, are 
likely to receive 0.1 rem (0.001 sievert) or more committed 
effective dose equivalent, and/or 5 rems (0.05 sievert) or more 
committed dose equivalent to any organ or tissue, from all occupational 
radionuclide intakes in a year; 
  (2) Declared pregnant workers likely to receive an intake 
resulting in a dose equivalent to the embryo/fetus in excess 
of 10 percent of the limit stated in § 835.206; or 
  (3) Minors and members of the public who are likely to receive, 
in 1 year, an intake resulting in a committed effective dose 
equivalent in excess of 50 percent of the limits stated in § 835.207 
or § 835.208, respectively. 
  (d) Internal dose evaluation programs shall be adequate to 
demonstrate compliance with § 835.202. 




v§ 835.403  Area monitoring.