Office of New Reactors; Proposed Interim Staff Guidance; Review of Evaluation To Address Gas Accumulation Issues in Safety Related Systems

Resumo

The NRC staff is soliciting public comment on its proposed Interim Staff Guidance (ISG) DC/COL-ISG-019 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML092360375). The purpose of this ISG is to clarify the NRC staff guidance to address issues of gas accumulation in safety related systems. This ISG revises and updates the guidance provided to the staff in Standard Review Plan (SRP) Sections 5.4.7, "Residual Heat Removal System," 6.3 "Emergency Core Cooling System," and 6.5.2 "Containment Spray System" of NUREG- 0800, "Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants," March 2007. The NRC staff issues DC/COL- ISGs to facilitate timely implementation of current staff guidance and to facilitate activities associated with review of applications for design certifications and combined licenses by the Office of New Reactors. The NRC staff intends to incorporate the final approved DC/ COL-ISG-019 into the next revision of the SRP and related guidance documents.