Document: NUREG-0800
Document ID: 71b0a52a-ac0c-4c26-b0eb-708a6f5600fb
Document Type: srp
Title: FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070333.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.5
CFR Part: 
CFR Title: 

Content:
g these requirements provides assurance that the structures described in this section will be designed to contain radioactive materials and will perform their intended safety function.48 2. Compliance with GDC 1 requires that structures, systems, and components be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety function to be performed. SRP Section 3.8.5 refers to SRP Section 3.8.3 (which cites ACI 349, supplemented by Regulatory Guides 1.94 and 1.142) to provide guidance related to design methodology, DRAFT Rev. 2 - April 1996 3.8.5-10 materials testing, and construction techniques commensurate with the importance of the safety function to be performed. These requirements impose specific restrictions to ensure that the foundations of structures will perform acceptably when designed in accordance with the referenced standards. Meeting these requirements provides assurance that the foundations of structures described in this section will perform their intended safety function.49 3. Compliance with GDC 2 requires that systems, structures, and components important to safety be designed to withstand the effects of expected natural phenomena combined with the effects of normal and accident conditions without loss of capability to perform their safety function. The primary function of a foundation is to transmit the loads imposed by the superstructure to the foundation material, bedrock, and/or soil supporting the structure. Foundations must be designed to interact with the structures they support. Consequently, it is necessary to specify the most severe natural phenomena (e.g., earthquakes) likely to occur as a function of their frequency of occurrence. The load combinations and specifications cited in this SRP section provide engineering criteria that are acceptable to the staff for this purpose. Meeting this requirement provides assurance that foundations of structures will be designed to withstand the