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Section 17: Requirements for Fume Hoods Utilizing Radioactive Materials


A. Up to 1.0 millicurie

  • Up to 1.0 millicurie of radioactive material may be used in a laboratory that does not have a fume hood, provided that
    1. the radioactive material is not volatile or readily dispensable (as dusts) or highly toxic.
    2. the radioactive material has no characteristics that, in the judgment of the Radiation Safety Committee, would make it dangerous to use without a fume hood.

B. Up to 10 millicuries

  • Up to 10 millicuries of radioactive material may be used in a standard fume hood, provided that in the judgment of the Radiation Safety Committee, the type of materials and procedures described in the protocol can be used safely in this type of hood and that the hood meets the requirements of item D below.

C. Up to 50 millicuries

  • Up to 50 millicuries of radioactive material may be used in a radioisotope fume hood with stainless steel liner and HEPA filter, provided that in the judgment of the Radiation Safety Committee the types of materials and procedures described in the protocol can be used safely in this type of hood. Risk to the public as well as laboratory personnel will be considered. Use of over 50 millicuries will be decided on a case-by-case basis by the Radiation Safety Officer. In cases that do not present excessive risks, use of over 50 millicuries may be approved.

D. Fume Hood Air Flow Requirements

  • All fume hoods used for radioactive materials must have at least 100 linear feet per minute of face velocity with the sash in full-open position.
    1. Deleted 6/19/13 (no longer applicable)
    2. Hoods approved for operation at half-sash must be operated with the sash at or below this position at all times.