Document: NUREG-0800
Document ID: ddaa3c7d-ce79-4a3f-aaae-4e4436ab7bc1
Document Type: srp
Title: NUCLEAR DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070740003.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.3
CFR Part: 
CFR Title: 

Content:
he reactor power level from full power to zero power. D. The applicant needs to provide tables and discussions on control requirements and provisions at beginning of life (BOL), end of life (EOL), and intermediate times during the fuel cycle. E. The control requirements and provisions for control needed to compensate for the effects on the power distribution and stability of the high cross-section neutron capture of the fission product nuclide xenon-135. F. The adequacy of the control systems to assure that the reactor can be returned to and maintained in the cold shutdown condition at any time during operation. The applicant shall discuss shutdown margins (SDM). Shutdown margins need to be demonstrated by the applicant throughout the fuel cycle. G. The applicant’s analysis and experimental basis for determining the reactivity worth of a “stuck” control rod of highest worth and margins for stuck rods. H. Uncertainties associated with the control rods needs to be considered, including: i. Manufacturing tolerances ii. Methods errors iii. Operation other than planned 4.3-4 Revision 3 - March 2007 iv. Control element absorber depletion v. Measurement uncertainty in shutdown margin demonstration I. The provision of two independent control systems. 5. The areas of control rod patterns and reactivity worths. These are: A. Descriptions and figures indicating the control rod patterns expected to be used throughout a fuel cycle. This includes operation of single rods or of groups, or banks of rods, rod withdrawal order, and insertion limits as a function of power and core life. B. Descriptions of allowable deviations from the patterns indicated above, such as for misaligned rods, stuck rods, or rod positions used for spatial power shaping. C. Descriptions, tables, and figures of the maximum worths of individual rods or banks as a function of position for power and cycle life conditions appropriate to rod withdrawal transients and rod ejection or drop accidents.