Document: NUREG-0800
Document ID: be0ff036-ddfa-4ffb-8bb7-15e0fd9a1142
Document Type: srp
Title: 7.2 7.3 7.4 7.5 7.6 7.7
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350467.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.1
CFR Part: 
CFR Title: 

Content:
on 4.7 of IEEE Std 279. Conformance to the requirements of GDC 24 is addressed in the review of Sections 7.2 and 7.3 of the SAR. k. Criterion 25 - Protection System Requirements for Reactivity Control Malfuntctions. "The protection system shall be designed to assure that speci- fied acceptable fuel design limits are not exceeded for any single malfunction of the reactivity control systems, such as accidental withdrawal (not ejection or dropout) of control rods.". Applicability: The reactor trip system and reactivity control system interlocks identified in Chapter 15, if required, to assure that specified acceptable fuel design limits are not exceeded for any single malfunction of the reactivity control systems. Review Methods: Chapter 15 of the SAR provides the bases for the protection system and reactivity control system inter- locks. Section 7.7 should provide an evaluation of failures in the reactivity control systems. The evaluation of confor- mance to the requirement of GDO 25 is addressed in the review of the reactor trip system in Section 7.2, and in the review of reactivity control system interlocks in Section 7.7 of the SAR. See BTP.ICSB 14. 7.1-18 Rev. 0 - July 1981 1. Criterion 29 - Protection Against Anticipated Operational occurrences. 'The protection, and reactivity control systems shall be designed to assure an extremely high probability of accomp- lishing their safety functions in the event of anticipated. operational occurrences." Applicability: The protection systems and reactivity control systems. Review Methods: Conformance to requirements of GDC 29 is concluded based upbn conformance of the protection system and reactivity control systems to the above applicable GDCs. Probabilistic reliability assessments may be performed by the Commission to provide a basis for development of deter- ministic criteria for specific systems. However, the review of these systems will address conformance to the deterministic criteria so established. Conformance of