Document: NUREG-0800
Document ID: 4926757d-c89a-498c-a8cb-918908ab5496
Document Type: srp
Title: of the SAR should provide this information.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350467.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.3
CFR Part: 
CFR Title: 

Content:
Section 3(3) requires the identification of the minimum number and loca- tion of sensors for those variables in 3(2) that have a spatial dependence. The applicant's analysis should demonstrate that the number and location of sensors are adequate. Sections 3(4), 3(5), and 3(6) require the identification of operational limits, the margin between operational limits and the level for the onset of unsafe conditions (setpoint), and limits which require protective action (safety limit - i.e., value assumed in the safety analysis) for each vari- able. The applicant's analysis should confirm that there is adequate margin between operating limits and setpoints such that there is a-low probability for inadvertent actuation of the system. The applicant's analysis should confirm that there is adequate margin between set points and safety limits such that the system initiates protective actions before safety limits are exceeded. Section 3(7) requires that the range of transient and steady-state condi- tions of both the energy supply and the environment during normal, abnor- mal., and accident conditions for which the system rust perform be identi- fied. This information is used in subsequent.evaluationsi Section 3(8) requires that the malfunctions, accidents, or other unusual events which could physically damage protective system components or could cause environmental changes leading to functional degradation of system performance, and for which provisions must be incorporated to 7.1-22 -* Rev. 0 - July 1981 retain necessary protective action be identified. This information is used in subsequent evaluations. Section 3(9) requires that the performance requirements including system response times, system accuracies, ranges, and rates of change of-sensed variables to be accommodated until conclusion of the protective action be identified. The applicant's analysis, including the applicable portion provided in Chapter 15, should confirm that the system performance require- ments are