The substantive changes will be in providing relaxations in training and experience requirements for authorized users for human medical use and daily spot checks of gamma stereotactic radiosurgery units containing radioactive materials; provide exemptions for use of discrete sources of radium 226, naturally occurring radioactive materials or accelerator produced radioactive materials; changes to definitions; adding accelerator produced Nitrogen 13 and Oxygen 15 isotopes to the table of allowable radiation doses to occupational workers via oral and inhalation pathways, and maximum concentrations released into the environment via air, water and sewers (ALI-DAC Tables); clarifies how out of state licenses that use radioactive materials in the State of Florida may dispose of radioactive materials in the State of Florida; the preparation and distribution of radioactive materials for human medical use; require a permanent location within the State of Florida to be issued a specific radioactive materials license; and other subjects encompassed by the above-cited rules. These rule changes will also address minor wording changes identified by the U.S. Nuclear Regulatory Commission and the department to clarify the use of radioactive materials or radiation from radioactive materials to maintain compatibility with the U.S. Nuclear Regulatory Commission.