Offshore Power Systems Floating Nuclear Plants (1-8), Docket No. STN 50-437, Supplement Number 4

摘要

Supplement 4 to the Safety Evaluation Report on the application for a manufacturing license (ML) filed by Offshore Power Systems (OPS) to manufacture standardized floating nuclear plants has been issued by the Office of Nuclear Reactor Regulation of the U.S. Nuclear Regulatory Commission. This supplement addresses all of the action items relative to the accident at Three Mile Island Unit 2 that currently must be reviewed. These action items are stated in NUREG-0718, Revision 1, 'Licensing Requirements for Pending Applications for Construction Permits and Manufacturing License.' On the basis of its review of the information provided by OPS in its Amendment 28 to the Plant Design Report, the staff concludes that this information is sufficient to show compliance with the staff positions on the appropriate action items in NUREG-0718, Revision 1. Also included in this supplement are the staff's evaluation of the applicant's emergency core cooling system upper head injection model performance, the staff's evaluation of the applicant's plant-specific implementation of resolved generic safety issues, an ACRS letter approving the plant conceptual design, the staff's discussion of generic unresolved safety issues pertaining to the floating nuclear power plant, and an update to the site design envelope.