Document: NRC Regulatory Guide
Document ID: cde52d5a-adf9-49be-9d1f-59449dfca895
Document Type: regulatory_guide
Title: TRIAL - Acceptability of Probabilistic Risk Assessment Results for Non-Light Water Reactor Risk-Informed Activities
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2123/ML21235A008.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.247
CFR Part: 
CFR Title: 

Content:
but are not necessarily limited to, dam failure and river and stream overflow. Seiche Flooding from water displaced by an oscillation of the surface of a landlocked body of water, such as a lake, that can vary in period from minutes to several hours. RG 1.247, Appendix B, Page B-3 Hazard Hazard Group Direct or Secondary Impact of Hazard Storm Surge Flooding that results from an abnormal rise in sea level due to atmospheric pressure changes and strong wind generally accompanied by an intense storm. Secondary hazards resulting from a storm surge include, but are not necessarily limited to, river and stream overflow and waves. Tsunami Flooding that results from a series of long- period sea waves that displaces massive amounts of water as a result of an impulsive disturbance, such as a major submarine slide or landslide. Secondary hazards resulting from a tsunami include, but are not necessarily limited to, river and stream overflow. Waves An area of moving water that is raised above the main surface of a body of water as a result of the wind blowing over an area of fluid surface. This hazard is typically analyzed in the context of other concurrent events like a hurricane. Extraterrestrial Events Meteorite/ Satellite Strikes A release of energy due to the impact of a space object such as a meteoroid, comet, or human-caused satellite falling within the Earth’s atmosphere, a direct impact with the Earth’s surface, or a combination of these effects. This hazard is analyzed with respect to direct impacts of an SSC and indirect impact effects such as thermal effects (e.g., radiative heat transfer), overpressure effects, seismic effects, and the effects of ejecta resulting from a ground strike. Extreme Temperature High Summer Temperature Effects on SSC operation due to abnormally high ambient temperatures resulting from weather phenomena or other causes. Secondary hazards resulting from high ambient temperatures include, but are not necessarily limited to, low lake or