Document: NUREG-0800
Document ID: 28c03fd2-3542-41ec-bfd7-5df2087c4ee6
Document Type: srp
Title: FUEL SYSTEM DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070407.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.2
CFR Part: 
CFR Title: 

Content:
nt in the program to perform additional surveillance if unusual behavior is noticed in the visual examination or if plant instrumentation indicates gross fuel failures. The surveillance program should address the disposition of failed fuel. In addition to the plant-specific surveillance program, there should exist a continuing fuel surveillance effort for a given type, make, or class of fuel that can be suitably referenced by all plants using similar fuel. In the absence of such a generic program, the reviewer should expect more detail in the plant-specific program. For a fuel design that introduces new features, a more detailed surveillance program commensurate with the nature of the changes should be described. This program should include appropriate qualitative and quantitative inspections to be carried out at interim and end-of-life refueling outages. This surveillance program should be coordinated with prototype testing discussed in subsection II.C.2. When prototype testing cannot be performed, a special detailed surveillance program should be planned for the first irradiation of a new design. Technical Rationale:76 The technical rationale for application of the above acceptance criteria to the fuel system design is discussed in the following paragraphs: 1. 10 CFR Part 50, §50.46 requires each PWR and BWR to be provided with an emergency core cooling system (ECCS) that must be designed so that its calculated cooling performance following a postulated LOCA conforms to acceptance criteria set forth in the regulation. Acceptance criteria in 10 CFR 50, §50.46 establish both fuel system design limits and core cooling requirements. SRP Section 4.2 reviews the performance of the fuel system during postulated LOCAs. Acceptable methods are presented in Regulatory Guide 1.157, or alternatively Appendix K to 10 CFR 50, to evaluate the performance of the ECCS. Regulatory Guide 1.126 provides an acceptable model for predicting the effects of fuel densification in