Document: NRC Regulatory Guide
Document ID: 5810150e-ee20-4cd1-b72f-6e918a603f73
Document Type: regulatory_guide
Title: Applications for Nuclear Power Plants (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1523/ML15233A056.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.206
CFR Part: 
CFR Title: 

Content:
........................... 19D.2 Applicable Regulations and Criteria ........................................................................................... 19D.3 Definition of Controlled, Stable State......................................................................................... 19D.4 Definition of Equipment Survivability Time Frames ................................................................... 19D.4.1 Time Frame 0 - Pre-Core Uncovery ............................................................................ 19D.4.2 Time Frame 1 - Core Heatup ...................................................................................... 19D.4.3 Time Frame 2 - In-Vessel Severe Accident Phase ........................................................ 19D.4.4 Time Frame 3 - Ex-Vessel Severe Accident Phase. ..................................................... 19D.5 Definition of Active Operation Time ......................................................................................... 19D.6 Equipment and Instrumentation for Severe Accident Management .............................................. 19D.6.1 Time Frames 0 and 1 - Accident Initiation, Core Uncovery and Heatup. ....................... 19D.6.2 Time Frame 2 - In-Vessel Core Core Melting and Relocation ....................................... 19D.6.3 Time Frame 3 - Ex-Vessel Relocation ......................................................................... 19D.6.4 Summary of Equipment and Instrumentation ............................................................... 19D.7 Severe Accident Environments .................................................................................................. 19D.8 Assessment of Equipment Survivability ..................................................................................... 19D.8.1 Approach to Equipment Survivability ......................................................................... 19D.8.2 Equipment Located in Containment.