Document: NUREG-0800
Document ID: a09b1666-b289-4ea9-9e8f-3ee5fbd5bf41
Document Type: srp
Title: CONCRETE AND STEEL INTERNAL STRUCTURES OF STEEL OR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1319/ML13198A250.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.3
CFR Part: 
CFR Title: 

Content:
g fluids, that may result from equipment failures and from events and conditions outside the nuclear power unit. This SRP section provides methods acceptable to the staff, including load combinations, acceptance criteria, standards, and codes to assure compliance with GDC 4. Meeting these requirements and criteria provide assurance that the containment internal structures will withstand loads from internal events, such as those described above, and from external sources such as earthquakes, thus decreasing the probability that these events will damage containment internal structures. 3.8.3-31 Revision 4 – September 2013 Meeting these requirements and criteria provide assurance that the internal structures of the containment will function as designed, be capable of maintaining their structural integrity, and perform their intended safety function. 5. Compliance with GDC 5 prohibits the sharing of structures important to safety among nuclear power units unless it can be shown that such sharing will not significantly impair their ability to perform their safety functions, including, in the event of an accident in one unit, an orderly shutdown and cooldown of the remaining units. The requirements of GDC 5 are imposed to ensure that the use of common structures in multiunit plants will not significantly affect the orderly and safe shutdown and cooldown in one plant in the event of an accident in another. The load combination equations combine loads from normal operation and design-basis accidents so that the resulting structural designs provide for mutual independence of shared structures. Meeting this requirement provides assurance that containment internal structures and their associated components are capable of performing their required safety functions, even if they are shared by multiple nuclear power units. 6. Compliance with GDC 50 requires that the reactor containment structure, including access openings, penetrations, and the containment heat removal system,