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Exposure Limits for the General Public

Visitors to a radiation laboratory who are not classified as radiation workers by their employers, laboratory workers who are not trained in radiation safety, custodial staff, and any other non-radiation workers are all members of the general public under the law. They must not receive a radiation dose in excess of either:
  1. Two mrem in any one hour.
  2. 100 mrem in any one year.

Since most radiation use facilities frequently have members of the general public visit their work areas, Michigan State University has elected to maintain unrestricted area contamination limits as part of the ALARA program.

Area Restrictions

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