Document: NUREG-0800
Document ID: a2d035da-992b-42e8-894f-787a019b437d
Document Type: srp
Title: NUCLEAR DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070410.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.3
CFR Part: 
CFR Title: 

Content:
ble alarms and/or control room indications for these monitored variables. 4. The applicant has met the requirements of GDC 26 with respect to provision of two independent reactivity control systems of different designs by: a. Having a system thant can reliably control anticipated operational 34 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 CPBSRXB under SRP Sections 15.4.8 or 35 15.4.9): a. Meeting the regulatory position in Regulatory Guide 1.77 for PWRs, b. Meeting the fuel enthalpy limit of 1.17 KJ/g (280 cal/gm) for BWRs 36 (same as for PWRs), c. Meeting the criteria on the capability to cool the core, and 4.3-17 DRAFT Rev. 3 - April 1996 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