Re: Radon occupational exposure

[Ning_Liu@NOTES.YMP.GOV]

  You may want to check out 30 CFR 57, Mine Safety and Health
  Administration, and 10 CFR 835, Occupational Radiation Protection.

  Ning Liu
  ning_liu@notes.ymp.gov


          Any help would be appreciated.
          
          I understand OSHA limits occupational radon exposure to
          either 30 pCi/L or 0.33 WL based on continuous exposure for
          40 hours per week, 52 weeks per year [29CFR 1910.96(C)(1)].
          Iowa OSHA apparently also requires an area to be posted as
          an "Airborne Radioactive Area" if a worker receives 0.024
          WLM exposure in one week.
          
          Does anyone know of a standard or recommendation that sets a
          ceiling level for occupational radon exposure?
          
          
          Bill Field
          Department of Preventive Medicine
          University of Iowa
          Iowa City, Iowa 52242
          319-335-4413