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Lessons learned in decommissioning medical facilities.

V Evdokimoff1

  • 1Boston University Medical Center, MA 02118, USA. vevdo@bu.edu

Health Physics
|October 20, 1999
PubMed
Summary

Most medical research buildings surveyed were below release limits for radioactive contamination. Fixed contamination was more prevalent than removable contamination, supporting a limited survey strategy for decommissioning these facilities.

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Area of Science:

  • Environmental Science
  • Nuclear Safety
  • Radiological Health

Background:

  • Decommissioning medical research buildings requires careful radiological surveys.
  • Previous surveys indicate varying levels of contamination in such facilities.
  • Regulatory standards for releasing medical facilities are subject to change.

Purpose of the Study:

  • To evaluate the effectiveness of decommissioning survey strategies in medical research buildings.
  • To assess the nature and extent of radioactive contamination in these facilities.
  • To inform future decommissioning and survey approaches.

Main Methods:

  • Surveying multiple areas within medical research buildings.
  • Analyzing contamination levels against National (NRC) 1993 release limits.

Related Experiment Videos

  • Comparing the efficiency of wipe tests for removable contamination versus fixed contamination detection.

    • Main Results:

    • Most surveyed areas met the NRC 1993 release limits.
    • Radioactive contamination found was predominantly fixed, not removable.
    • Wipe tests proved inefficient for detecting removable contamination.

    Conclusions:

    • A limited sampling strategy focusing on fixed contamination is effective for decommissioning medical research buildings.
    • Recent regulatory guidance supports less stringent requirements for medical facility decommissioning.
    • The study validates a targeted approach to surveying radioisotope-used medical research buildings.