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:
00, provides assurance that nuclear reactors can be operated safely under worst case conditions. 3. GDC 10 requires the reactor core and associated coolant, control, and protection systems be designed with appropriate margin to assure that specified acceptable fuel design limits are not exceeded during any condition of normal operation, including the effects of anticipated operational occurrences. One objective of the fuel system safety review cited in this section is to ensure that the fuel system is not damaged during normal operations or anticipated operational occurrences. Design limits are specified in Section 4.2 to accomplish this objective. Compliance with GDC 10 significantly reduces the likelihood of fuel failures during normal operations or anticipated operational occurrences, thereby minimizing the possible release of fission products. 4. GDC 27 requires that the reactivity control system be designed with margin to have a combined capability, in conjunction with poison addition by the ECCS, of reliably controlling reactivity changes. The review of Section 4.2 ensures that fuel system damage is never so severe as to prevent control rod insertion when it is required. Maintaining the ability to insert control rods during postulated accidents minimizes the extent of fuel damage, thus reducing the amount of fission products released to the primary coolant system in the event an accident occurs. 5. GDC 35 requires a system be provided to transfer heat from the reactor core following any loss of reactor coolant at a rate such that: 1) fuel and clad damage that could interfere with continued effective core cooling is prevented; and 2) cladding metal-water reaction is limited to negligible amounts. This section reviews fuel system performance under postulated accident conditions. Application of GDC 35 to the design of the fuel system ensures that fuel rod damage will not interfere with effective emergency core cooling and that cladding temperatures will not reach