Document: NUREG-0800
Document ID: 34798f4a-fe75-475a-b41f-ffb023158358
Document Type: srp
Title: 2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070367.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.6.2.15
CFR Part: 
CFR Title: 

Content:
ch loads should demonstrate that the loads do not exceed the limits imposed by the applicable codes and standards. Where double-ended guillotine break of reactor coolant piping is postulated, criteria for evaluating loading transients and structural components are specified in NUREG-0609 (Reference 6).37 Technical Rationale38 The technical rationale for application of the above acceptance criteria to the reactor pressure vessel internals is discussed in the following paragraphs: 3.9.5-5 DRAFT Rev. 3 - April 1996 1. GDC 1 and 10 CFR Part 50, §50.55a require that structures, systems, and components (SSCs) important to safety be designed to quality standards commensurate with the importance of the safety functions to be performed. The reactor internals include SSCs that perform safety functions and/or whose failure could affect the performance of safety functions by other SSCs. These safety functions include reactivity monitoring and control, core cooling, and fission product confinement (within both the fuel cladding and the primary reactor coolant system). Application of this requirement to the reactor internals provides assurance that established standard design practices of proven or demonstrated effectiveness are used to achieve a high likelihood that these safety functions will be performed. 2. GDC 2, in relevant part, requires that SSCs important to safety be designed to withstand the effects of earthquakes without loss of capability to perform their safety functions. The reactor internals perform and/or may affect the performance (through their failure) of safety functions including core cooling and fission product confinement. Application of GDC 2 to the reactor internals provides assurance that they will withstand earthquakes without damaging fuel cladding or interfering with core cooling. 3. GDC 4, in relevant part, requires that SSCs important to safety be designed to accommodate the effects of and to be compatible with the environmental conditions