Document: NUREG-0800
Document ID: 3571c656-1693-466b-a77d-6c05b7eed41e
Document Type: srp
Title: REACTOR SYSTEMS - INSPECTIONS, TESTS, ANALYSES, AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070660623.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.4
CFR Part: 
CFR Title: 

Content:
d therefore, many of the characteristics and features of these systems are judged to have safety significance. This is reflected in a relatively higher level of detail in Tier 1 for these systems than other systems of the standard design. Thus, the Tier 1 portion of the DCD as derived from Tier 2 information is the focus for this review for the aforementioned SSCs for Reactor Systems identified as Tier 1. ITAAC include (1) design commitments; (2) identification of those inspections, tests, and analyses (observations, tests, or examinations) to determine if the commitment was met; and (3) acceptance criteria that demonstrate that the design commitment was, in fact, met. Successful completion of all ITAAC will demonstrate that the plant was constructed in accordance with a certified design, regulations, and the license. The specific fuel, control rod and core designs presented in Tier 2 will constitute an approved design that may be used for the COL first cycle core loading, without further NRC review. If any other core design is requested for the first cycle, the COL applicant or licensee will be required to submit for staff review that specific fuel, control rod and core design analyses. No ITAAC are required for Tier 1 information in the fuel, control rod, and core design areas because of the requirement for prior Nuclear Regulatory Commission (NRC) approval of any proposed changes to the approved design. Post-fuel-load testing programs (e.g., startup and power- ascension testing) verify that the actual core performs in accordance with the analyzed core design. The specific areas of review are as follows: 1. Tier 1 information identified as such in the DCD and the process by which the applicant identified this information from its Tier 2 SSC descriptions. Tier 1 should include those SSCs that could affect the operation of the reactor and core cooling systems [e.g., the following chapters of the Standard Review Plan (SRP): Chapter 4–Reactor, Chapter 5–Reactor