This Operating Experience Level 3 (OE-3) document is to raise awareness of recently issued guidance regarding the unreviewed safety question (USQ) process following a new probabilistic seismic hazard analysis (PSHA).
Office of Environment, Health, Safety & Security
May 10, 2023
minute read time
May 2023
This Operating Experience Level 3 (OE-3) document is to raise awareness of recently issued guidance regarding the unreviewed safety question (USQ) process following a new probabilistic seismic hazard analysis (PSHA). The OE-3 also provides recommendations for potential action by field organizations that manage Department of Energy (DOE) nuclear facilities and implement a USQ process. The guidance, Frequently Asked Questions (FAQ) Regarding DOE G 424.1-1C, Implementation Guide for Use in Addressing Unreviewed Safety Question Requirement, which supports the Secretary of Energy’s November 2, 2022 letter on this topic is available through the DOE Directives portal.