Document: NUREG-0800
Document ID: a7fafe76-5570-446b-96dd-3e53ec9bccb3
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340663.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4
CFR Part: 
CFR Title: 

Content:
ntrol requirements and provisions for control necessary to compensate for long-term reactivity changes of the core. These reac- tivity changes occur because of depletion of the fissile material in the fuel, depletion of burnable poison in some of the fuel rods, and buildup of fission products and transuranium isotopes. 4.3-2 Rev. 2 - July 1981 b. The control requirements and provisions for control needed to compen- sate for the reactivity change caused by changing the temperature of the reactor from the hot, zero power condition to the cold shutdown condition. c. The control requirements and provisions for control needed to compen- sate for the reactivity effects caused by changing the reactor power level from full power to zero power. d. The control requirements and provisions for control needed to compen- sate for the effects on the power distribution of the high cross- section Xe-135 isotope. e. 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. f. The applicant's analysis and experimental basis for determining the reactivity worth of a "stuck" control rod of highest worth. g. 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. Descriptions and curves