Document: NUREG-0800
Document ID: ac43f632-9db1-4857-9f56-bfba45965456
Document Type: srp
Title: * These are modifications to a plant’s design, operations, or other activities that require NRC approval. These modifica
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0232/ML023250195.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19
CFR Part: 
CFR Title: 

Content:
meters used to define plant damage states? • Do the key plant damage states (KPDSs) utilized adequately represent the results of the Level 1 analysis by including the plant damage states that have a significant frequency of occurrence? • Have those plant damage states that have been eliminated in this process been assigned to KPDSs of higher consequence (e.g., likelihood of large early release)? SRP 19-32 Table III-1 (page 3 of 3) Questions to Assist in Establishing the Cause-Effect Relationship LEVEL 2 (CONTAINMENT ANALYSIS) • Have new containment failure modes identified by the application been addressed in the PRA? Are potential changes accounted for? • Are any dependencies among containment failure modes being changed? • Does the application involve mechanisms that could lead to containment bypass? • Does the application involve mechanisms that could cause failure of containment isolation? • Does the application directly affect the occurrence of any severe accident phenomena? • Does the application necessitate use of risk measures other than large early release? • Does the application change equipment qualification to the point where it affects timing of equipment failure relative to containment failure? • Does the application affect core debris path to the sump or suppression pool or to the other portions of the containment? • Do the selected source term categories adequately represent the revised containment event tree (CET) endpoints? Are CET endpoint frequencies changed enough to affect the selection of the dominant/representative sequences in the source term binning process? • Does the application affect the timing of release of radionuclides into the environment relative to the initiation of core melt and relative to the time for vessel rupture? LEVEL 3 (CONSEQUENCE ANALYSIS) • Does the application necessitate detailed evacuee doses? • Are individual doses at specific locations needed for this application? • Is evacuation or