Comment on FR Doc # 2026-08550, NRC-2025-0379-0011, from Deep Fission, Inc.

Summary: Deep Fission, Inc. supports the NRC's efforts to modernize regulatory review practices for advanced reactors but argues that the draft guidance still relies too heavily on conventional light-water reactor structures. They recommend shifting to a risk-informed and performance-based (RIPB) approach that prioritizes high-level safety objectives and applicability determinations over traditional topical review areas.