under section 554 of title 5, United States Code, are unnecessary. . (b) Study on the impact of the elimination of mandatory hearing for uncontested licensing applications Not later than 18 months after the date of enactment of this Act, the Comptroller General shall transmit to Congress a report containing the results of a study on the effects of eliminating the hearings required under section 189 a. of the Atomic Energy Act of 1954 ( 42 U.S.C. 2239(a) ) for an application under section 103 or section 104 b. of such Act for a construction permit for a facility in the absence of a request of any person whose interest may be affected by the proceeding. 4. Efficiency of Advisory Committee on Reactor Safeguards (a) Committee composition Section 29 of the Atomic Energy Act of 1954 ( 42 U.S.C. 2039 ) is amended by inserting The Commission shall seek to include a diversity of disciplines and operational experiences when appointing members of the Committee. after four years each. . (b) License applications Section 182 b. of the Atomic Energy Act of 1954 ( 42 U.S.C. 2232(b) ) is amended by adding at the end the following: If the Commission determines referral of an application to the Committee is necessary, the Committee shall initiate a review of the application not later than 30 days after receiving such referral, and shall submit a report thereon under this subsection not later than 180 days after initiating such review. . 5. Updating Nuclear Regulatory Commission user fees and charges Section 102(b)(3)(B) of the Nuclear Energy Innovation and Modernization Act ( Public Law 115–439 ) is amended— (1) by redesignating clause (ii) as clause (iii)