OSHA Regulations

Consistent with OSHA Permissible Exposure Limits, Licensees shall comply with 32 Ill. Adm. Code 340. This means that the radiation exposure shall not exceed 30 pCi/L or 0.3 WL, based on continuous workplace exposure for 40 hr/week, 52 weeks per year and shall not exceed 4 working level months (WLM) over a 12-month period, using an equilibrium ratio of 50 percent to convert radon exposure to WLM.