Office of New Reactors; Notice of Availability of the Final Interim Staff Guidance COL/ESP-ISG-04 on the Definition of Construction and on Limited Work Authorizations

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The NRC is issuing its Final Interim Staff Guidance (ISG) COL/ ESP-ISG-004 (ML090060897). This ISG provides guidance regarding the definition of construction and the delineation of preconstruction activities and those activities requiring prior approval of the U.S. Nuclear Regulatory Commission (NRC or the Commission). In addition, this ISG provides guidance regarding the information to be submitted by any applicant for a limited work authorization (LWA). The NRC staff issues ISGs to facilitate timely implementation of the current staff guidance and to facilitate activities associated with review of applications for early site permits and combined licenses for the Office of New Reactors. The NRC staff will also incorporate COL/ ESP-ISG-004 into the next revisions of the Regulatory Guide 1.206, "Combined License Applications for Nuclear Power Plants," and related guidance documents.