Document: NUREG-0800
Document ID: 0f097ac2-b7b1-437d-a055-1546a9094ef6
Document Type: srp
Title: CONCRETE CONTAINMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1006/ML100620888.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.1
CFR Part: 
CFR Title: 

Content:
ggressive ground water/soil (i.e., pH > 5.5, chlorides < 500 ppm, sulfates <1500 ppm), an acceptable program for normally inaccessible, below-grade concrete walls and foundations is to (1) examine the exposed portions of below-grade concrete for signs of degradation, when excavated for any reason; and (2) conduct periodic site monitoring of ground water chemistry, to confirm that the ground water remains nonaggressive. 3.8.1-19 Revision 3 - May 2010 For plants with aggressive ground water/soil (i.e., exceeding any of the limits noted above), an acceptable approach is to implement a periodic surveillance program to monitor the condition of normally inaccessible, below-grade concrete for signs of degradation. D. For prestressed concrete containments, inservice surveillance requirements for the tendons, as presented in the technical specifications of the operating license, are acceptable if in accordance with Section XI, Subsection IWL of the ASME Code; 10 CFR 50.55a; and RGs 1.35 and 1.35.1 for ungrouted tendons and 1.90 for grouted tendons, respectively. E. SRP Section 6.2.6 presents the preoperational and inservice integrated leak-rate testing criteria. F. For new and unique containment designs (e.g., incorporating integrally connected passive systems with pools), the preoperational tests and inspections of containment discussed above need to consider items included in these unique features. Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. Compliance with GDC 1 requires that SSCs important to safety be designed, fabricated, erected, and tested to quality standards commensurate with the importance of their safety function that a quality assurance program be established and implemented, and that sufficient and appropriate records be maintained. Where generally recognized codes and standards are used, they should be identified and