Guidance for Evaluation of Acute Chemical Exposures and Proposed Quantitative Standards

The U.S. Nuclear Regulatory Commission (NRC) is providing supplemental information to an earlier notice, appearing in the Federal Register on March 4, 2015, which requested comment on a draft interim staff guidance (ISG), ``Guidance for Evaluation of Acute Chemical Exposures and Proposed Quantitative Standards.'' The draft ISG, if issued in final form, would supplement existing guidance in NUREG-1520, ``Standard Review Plan for the Review of a License Application for a Fuel Cycle Facility,'' by providing additional guidance and the descriptions of proposed quantitative standards for the NRC to follow when evaluating the integrated safety analysis (ISAs) of acute chemical exposures. This action is necessary to provide the public with the backfitting information with respect to the draft ISG, and includes references to the key documents on backfitting issues. The public comment period was originally scheduled to close on May 18, 2015. The NRC is extending the public comment period on this action to allow more time for members of the public to review the additional information on backfitting before submitting any comments.