Document: NUREG-0800
Document ID: 3ea2f0ac-4d7e-464a-b1c4-390c3970f642
Document Type: srp
Title: provides specific thermal-hydraulic criteria.  The available radioactive fission product
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070740002.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.4
CFR Part: 
CFR Title: 

Content:
fuel-handling accident at a fuel handling and storage facility at reactor sites. RG 1.77, RG 1.183, and RG 1.195 identify acceptable analytical methods and assumptions that may be used to evaluate the consequences of a rod ejection accident in PWRs. Evaluation of the radiological dose consequences associated with a postulated reactor accident, as prescribed in 10 CFR Part 100, provides assurance that nuclear reactors can be operated safely under worst-case conditions. 4.2-21 Revision 3 - March 2007 3. GDC 10 requires that the reactor core and associated coolant, control, and protection systems be designed with appropriate margin to ensure that specified acceptable fuel design limits are not exceeded during any condition of normal operation, including the effects of AOOs. 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 AOOs. SRP Section 4.2 specifies design limits to accomplish this objective, while this section reviews alternative design limits proposed by vendors. Compliance with GDC 10 significantly reduces the likelihood of fuel failures during normal operations or AOOs, thereby minimizing the possible release of fission products. In addition, preventing fuel damage during normal operation and AOOs may also reduce the severity of fuel damage during an accident. For example, an increase in the severity of fuel damage for normal operation may result in an increase in source term consequences, along with a decrease in core coolability and/or control rod insertability for postulated accidents. 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