Document: NUREG-0800
Document ID: 667d1b37-702c-4e8d-93da-886dbb7a679f
Document Type: srp
Title: d.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070304.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.2.2.30
CFR Part: 
CFR Title: 

Content:
m, then the system should be designed as a safety-related system and meet the single failure criterion requirements.38 DRAFT Rev. 3 - April 1996 3.4.1-4 Technical Rationale The technical rationale for application of these acceptance criteria to reviewing flood protection is discussed in the following paragraphs:39 Compliance with GDC 2 requires that structures, systems, and components important to safety be designed to withstand the effects of natural phenomena such as flood, tsunami, and seiche without loss of capability to perform their safety function. The criterion further specifies that the design bases for these structures, systems, and components reflect the following: 1. Appropriate consideration of the most severe natural phenomena historically reported for the site and surrounding area, with sufficient margin for the limited accuracy, quantity, and time period in which the historical data have been accumulated; 2. Appropriate combinations of the effects of normal and accident conditions with the effects of the natural phenomena; and 3. The importance of the safety functions to be performed. 10 CFR Part 100, Appendix A, sets forth the principal seismic and geologic considerations guiding the Commission's design basis evaluation, as established in GDC 2, for proposed nuclear power plant sites. Appendix A requires the following with regard to floods: 1. Section IV(c), "Required Investigations for Seismically Induced Floods and Water Waves," specifies factors to be considered when investigating seismically induced floods and water waves. 2. Section V(c), "Determination of Design Bases for Seismically Induced Floods and Water Waves," specifies factors to be considered when determining the protection required against seismically induced flooding. 3. Section VI(c), "Application to Engineering Design, Seismically Induced Floods and Water Waves and Other Design Conditions," requires that the design basis for seismically induced floods and water waves be considered