Document: NUREG-0800
Document ID: a2d035da-992b-42e8-894f-787a019b437d
Document Type: srp
Title: NUCLEAR DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070410.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.3
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CFR Title: 

Content:
4.3-10 GDC 27 provides assurance that the reactivity control system will be designed such that damage to the fuel in the event of an accident will be minimized. 9. GDC 28 requires that the effects of postulated reactivity insertion accidents not result in damage to the reactor coolant pressure boundary nor cause sufficient damage to impair the capability to cool the core. This SRP section reviews the reactivity coefficients and rod worths assumed in the analysis of reactivity insertion events in Chapter 15 of the SRP. Compliance with GDC 28 provides assurance that the second barrier (i.e., the reactor coolant pressure boundary) that prevents the release of fission products to the environment will not be damaged in the event a reactivity insertion accident were to occur, and that core cooling will not be prevented by the structural collapse of fuel in the core. III. REVIEW PROCEDURES The review procedures below apply in general to both the construction permit (CP) and operating license (OL) stage reviews. At the CP stage, parameter values and certain design aspects may be preliminary and subject to change. At the OL stage, final values of parameters should be used in the analyses presented in the SAR. The review of the nuclear design of a plant is based on the information provided by the applicant in the safety analysis report, as amended, and in meetings and discussions with the applicant and the applicant'shis contractors and 21 consultants. This review in some cases will be supplemented by independent calculations performed by the staff or staff consultants. Files of audit calculations are maintained by CPB SRXB for reference by the reviewer. 22 1. The reviewer confirms, as part of the review of specific areas of the nuclear design outlined below, that the design bases, design features, and design limits are established in conformance with the GDCs listed in subsection II of this SRP section. 2. The reviewer examines the information presented in the SAR to