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:
signs by: a. Having a system than can reliably control anticipated operational occurrences, b. Having a system that can hold the core subcritical under cold conditions, and c. Having a system that can control planned, normal power changes. 5. The applicant has met the requirements of GDC 27 with respect to reactivity control systems that have a combined capability in conjunction with poison addition by the emergency core cooling system of reliably controlling reactivity changes under postulated accident conditions by; a. Providing a movable control rod system and a liquid poison system, and b. Performing calculations to demonstrate that the core has sufficient shutdown margin with the highest worth stuck rod. 6. The applicant has met the requirements of GDC 28 with respect to postulated reactivity accidents by (reviewed by CPB under SRP Sections 15.4.8 or 15.4.9): a. Meeting the regulatory position in Regulatory Guide 1.77 for PWRs, b. Meeting the fuel enthalpy limit of 280 cal/gm for BWRs (same as for PWRs), c. Meeting the criteria on the capability to cool the core, and 4.3-13 Rev. 2 - July 1981 d. Using calculational methods that have been found acceptable for reactivity insertion accidents. 7. The applicant has met the requirements of GDC 10, 20, and 25 with respect to specified acceptable fuel design limits by providing analyses demonstrating: a. That normal operation, including the effects of anticipated operational occurrences, have met fuel design criteria, b. That the automatic initiation of the reactivity control system assures that fuel design criteria are not exceeded as a result of anticipated operational occurrences and assures the automatic operation of systems and components important to safety under accident conditions, and c. That no single malfunction of the reactivity control system causes violation of the fuel design limits. V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regard- ing the NRC staff's