Document: NUREG-0800
Document ID: 5657a07e-c0b2-48ce-aaad-64d91609c4b3
Document Type: srp
Title: ICE EFFECTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0701/ML070100648.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.7
CFR Part: 
CFR Title: 

Content:
scribed in this SRP section. The SRP is not a substitute for the NRC's regulations, and compliance with it is not required. However, an applicant is required to identify differences between the design features, analytical techniques, and procedural measures proposed for its facility and the SRP acceptance criteria and evaluate how the proposed alternatives to the SRP acceptance criteria provide acceptable methods of compliance with the NRC regulations. Regulatory Guide 1.27 describes the applicable ultimate heat sink capabilities. Regulatory Guide 1.29 identifies safety-related structures, systems, and components. Regulatory Guide 1.59, as supplemented by best current practices, provides guidance for developing the hydrometeorological design bases. Regulatory Guide 1.102 describes acceptable flood protection to prevent the safety-related facilities from being adversely affected. 1. Historical Ice Accumulation: The application should include a complete history of ice formation at and in the vicinity of the site. A thorough listing of types of ice formations (ice jams, ice dams, floes, ridges, frazil, etc.), locations and durations of these formations, and descriptions of hydrometeorological characteristics accompanying these formations should be provided that are sufficient to establish the history of ice-formation at and in the vicinity of the site. 2. High and Low Water Levels: The application should include estimates of water levels resulting from potential ice flooding or low flows. Flooding from collapse of an upstream 2.4.7-4 Revision 3 - March 2007 ice dam or an ice jam should be considered. Backwater effects from a downstream ice dam or an ice jam that may result in flooding at the proposed site should also be considered. The suggested criteria of Regulatory Guide 1.27 apply when the water supply comprises part of the ultimate heat sink. 3. Ice Sheet Formation: The application should include estimates of the most severe ice- sheet formation in water storage