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Personal monitoring is required for the persons who are likely to receive a dose in excess of the UNR's administrative limits or 10% of state occupational dose limits.

Anyone who received radiation safety training and who is likely to receive 10% of the state occupational dose limits may request personal monitoring. The requesting personnel must complete the dosimeter request form and send it to EH&S. The dosimeter request form is available from the EH&S web page and office. Dosimeter delivery may take one week to two weeks from receipt of dosimeter request form.

NOTE: Those persons wishing to provide dosimetry to their students for class or laboratory activities must make special arrangements with EH&S.

NOTE: A dosimeter must be processed immediately whenever serious exposure is suspected. Call the RSO if such circumstances arise.

Personnel exposure data will be sent to each group or department to be available to dosimeter wearers when reports are received. Personnel exposure data shall be part of the permanent records of the EH&S Department. Upon written request by any wearer, EH&S will provide a copy of the individual's exposure history.

Employees or students requiring personal dosimetry will be required to complete the appropriate form indicating all locations where previous radiation exposures may have occurred. With the signed consent of the employee, a letter will be sent to the indicated facility or facilities requesting prior exposure history. Falsified statements or refusal to provide this information will result in denial, or termination of Authorized User status.

Bioassays may be required at the discretion of the RSO. As a general principle, bioassays will be required after any incident (e.g., contamination of personnel or exposure of persons to airborne radioactivity) where the possibility of internal deposition of radioisotopes exists. Bioassays include such tests as radioanalysis of blood, urine, fecal samples, nose swabs or sputum. In addition the term bioassay includes whole body or thyroid counts. Bioassay service is available at any time upon the request of the User. Thyroid counts (which takes only a few minutes) or other bioassays may be arranged by calling the RSO at 784-4540.

Any person who works with forms of radioiodine where iodide ions or uncombined iodine might be present in quantities which equal or exceed the values in the table given below are required to have bioassays at intervals deemed appropriate by the RSO according to the Regulatory Guide 8.20 (Revision 2 dated September 2014).

*Volatile radioiodine will only be handled in fume hoods or other systems which have been inspected and approved by the RSO.

**Quantities in this table are cumulative amounts handled during a three month period.

Personnel are required to call the RSO whenever they suspect that they might have been exposed to airborne radioiodine or if they believe that they might have ingested or otherwise allowed radioiodine to enter their bodies.

Personnel will be placed under medical surveillance when their potential exposure to ionizing radiation is such that somatic biological effects susceptible to detection by a medical evaluation could occur. Such appraisal will include an acute and chronic exposure evaluation and will consider many variables (duration, source, type of potential exposure, etc.). Personnel requiring medical surveillance will be referred to an examining physician by EH&S.

REFUSAL TO OBTAIN REQUIRED MEDICAL SURVEILLANCE WILL RESULT IN SUSPENSION OF AUTHORIZATION TO WORK WITH RADIOACTIVE MATERIALS.

Visitors are not normally allowed in restricted areas. Prior arrangements have to be made between the RSO and the AU, if there is a need to have visitors in a restricted area. The RSO will arrange appropriate dosimetry as required.