Document: NUREG-0800
Document ID: a35b0293-07ff-4bdb-9950-454f3a0e970e
Document Type: srp
Title: ICE EFFECTS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070249.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.7
CFR Part: 
CFR Title: 

Content:
al terms, it also specifies the amount of conservatism that must be used to determine the severity of icing phenomena for the purpose of assessing the adequacy of the design bases used for structures, systems, and components important to safety. Meeting the requirements of GDC 2 provides assurance that structures, systems, and components important to safety have been designed to withstand the most severe icing phenomena likely to occur.18 3. Compliance with 10 CFR Part 100.10(c) requires that the site's physical characteristics (including seismology, meteorology, geology, and hydrology) be taken into account when determining its acceptability for a nuclear power reactor. To satisfy the hydrologic requirements of 10 CFR Part 100, the applicant's SAR must contain a description of any icing phenomena with the potential to result in adverse effects to the intake structure or other safety-related facilities. Ice-related characteristics historically associated with the site and region must be described, and an analysis must be performed to determine the potential for flooding, low water, or ice damage to safety-related structures, systems, or components. The analysis must be sufficient to evaluate the site's acceptability and to assess the potential for those characteristics to influence the design of the plant structures, systems, or components important to safety. Meeting this requirement provides assurance that structures, systems or components important to safety are designed to withstand the effects of potentially severe icing conditions. 19 III. REVIEW PROCEDURES Applicable literature describing historical occurrences of icing in the region is reviewed to determine if icing protection should be considered in the design of safety-related facilities. If considered necessary, the most likely types of icing conditions (floating ice, river blockage by ice buildup, frazil, etc.) are listed, and the potential impact on plant design of each type is identified. Criteria of