Document: NUREG-0800
Document ID: 70c4a32a-d5e4-4f24-a8e3-4c1b787ca37f
Document Type: srp
Title: STRUCTURAL AND SYSTEMS ENGINEERING (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070657.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.2
CFR Part: 
CFR Title: 

Content:
failures and from events and conditions outside the nuclear power unit. DRAFT Rev. 0 - April 1996 14.3.2-4 GDC 14 requires, in part, the need for the reactor coolant pressure boundary to be designed, fabricated, erected, and tested so as to have an extremely low probability of abnormal leakage, of rapidly propagating failure, and of gross rupture. GDC 16 requires, in part, the need for the reactor containment to provide an essentially leak-tight barrier against uncontrolled release of radioactivity to the environment. GDC 50 requires, in part, the need for the reactor containment structure including access openings and penetrations to be designed so that the containment structure and its internal compartments can accommodate, without exceeding the design leakage rate and with sufficient margin, the calculated pressure and temperature conditions resulting from any loss-of-coolant accident. Using the above GDC as its basis, the following top-level attributes should be verified by ITAAC: (1) pressure boundary integrity (GDC 14, 16 and 50) (2) normal loads (GDC 2) (3) seismic loads (GDC 2) (4) suppression pool hydrodynamic loads (GDC 4) (5) flood, wind, and tornado (GDC 2) (6) rain and snow (GDC 2) (7) pipe rupture (GDC 4) (8) codes and standards (GDC 1) In addition, to ensure that the final as-built plant conforms to the certified design, applicants should provide ITAAC to reconcile the as-built plant with the structural design basis. A summary of the top-level structural design requirements for the major structural systems that are verified by the structures and systems in Tier 1 and the piping design information in Tier 1. Pressure Boundary Integrity To ensure that the applicable requirements of GDC 14, 16, and 50 have been adequately addressed, ITAAC should be established to verify the pressure boundary integrity of the RPV, piping, and primary containment (For PWRs, RV, piping, and primary containment) for the standard design. GDC 16 and 50 apply to the primary