Document: NUREG-0800
Document ID: bef1ea40-9941-4e02-89c6-16eca69fabac
Document Type: srp
Title: FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340582.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.5
CFR Part: 
CFR Title: 

Content:
itutes for regulatory guides or the Commission's regulations and compliance with them Is not required. The standard review plan sections are keyed to the Standard Format and Content of Safety Analysis Reports for Nuclear Power Plants. Not *11 sections of the Standard Format have a corresponding review plan. Published standard review plans will be revised periodically, as appropriate, to accommodate comments and to reflect new Informa- tion and experience. Comments and suggestions for Improvement will be considered and should be sent to the U.S. Nuclear Regulatory Commission. Office of Nuclear Reactor Regulation. Washington. D.C. 25. a. Containment Structure Foundation The most commonly used type of foundation for both concrete and steel containments is a mat foundation, which is a flat thick slab supporting the containment, its interior structures, and a shield builoing sur- rounding the containment, if any. For some PWR containments the base mat has a central depression forming the reactor cavity. The general arrangement of the containment base slab is reviewed as described in subsection 1.1 of Standard Review Plan (SRP) Section 3.8.1, with particular emphasis on methods of transferring horizontal shears, such as those caused by earthquakes, to the foundation media. Where shear keys are used for such purposes, the general arrangement of -the keys is reviewed. Where waterproofing membranes are used, their effect on the shear resistance of the foundation is reviewed. In prestressed concrete containments, where a tendon inspection gallery is used, arrangement of the gallery and means of either isolating it from the remainder of the base slab or of relying upon it for some function such as resisting shears, are reviewed. b. Containment Enclosure Building Foundation Where the containment enclosure building is constructed of reinforced concrete, it is usually supported on the same mat foundation which supports the containment. Where the containment enclosure building is