This rulemaking addresses the adoption of appropriate requirements found in 79 FR 43666. This rule change amends regulations in Rule R313-19 to make requirements for distributors of radioactive material clearer, less prescriptive, and more risk-informed and up-to-date. This amendment also redefines categories of devices to be used under exemptions, adding explicit provisions regarding the sealed source and device registration process, and adding flexibility to the licensing of users of sealed sources and devices. This amendment is primarily intended to make the licensing process more efficient and effective. (DAR NOTE: This change in proposed rule has been filed to make additional changes to a proposed amendment that was published in the May 1, 2015, issue of the Utah State Bulletin, on page 27. Underlining in the rule below indicates text that has been added since the publication of the proposed rule mentioned above; strike-out indicates text that has been deleted. You must view the change in proposed rule and the proposed amendment together to understand all of the changes that will be enforceable should the agency make this rule effective.)