Document: NUREG-0800
Document ID: 73dc4705-6dff-4f44-87ee-2a6f76cc6536
Document Type: srp
Title: OTHER SEISMIC CATEGORY I STRUCTURES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1319/ML13198A258.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.4
CFR Part: 
CFR Title: 

Content:
in the construction of seismic Category I structures. Among the major materials of construction covered in the review are the concrete ingredients, the reinforcing bars and splices, and the structural steel and anchors. 3.8.4-6 Revision 4 – September 2013 The staff reviews the quality control parameters that are proposed for the fabrication and construction of seismic Category I structures, including nondestructive examination of the materials to determine physical properties, placement of concrete, and erection tolerances. Special construction techniques, such as modular construction methods, if used, are reviewed on a case-by-case basis to determine their effects on the structural integrity of the completed structure. In addition, the applicant should provide the following information: A. The extent to which the materials and quality control programs comply to ACI 349, with additional criteria provided by RG 1.142 for concrete and ANSI/AISC N690-1994 including Supplement 2 (2004) for steel, as applicable B. If welding of reinforcing bars is used, it should comply with American Society of Mechanical Engineers (ASME), Boiler and Pressure Vessel Code (Code) Section III, Division 2, as supplemented with additional guidance provided in RG 1.136. Any exception to compliance should be supported with adequate justification. 7. Testing and Inservice Surveillance Programs. For seismic Category I structures outside containment, the staff reviews information on structures monitoring and maintenance requirements. For seismic Category I structures, it is important to accommodate inservice inspection of critical areas. The staff reviews any special design provisions (e.g., providing sufficient physical access, providing alternative means for identification of conditions in inaccessible areas that can lead to degradation, remote visual monitoring of high- radiation areas) to accommodate inservice inspection of other seismic Category I structures. Postconstruction testing and