ML22298A009
| ML22298A009 | |
| Person / Time | |
|---|---|
| Issue date: | 10/25/2022 |
| From: | Bhagwat Jain NRC/NRR/DORL/LPL4 |
| To: | |
| References | |
| Download: ML22298A009 (1) | |
Text
Gen IV Light Water Reactor Example SECY Point 4 Manual IEEE Reqd IEEE Reqd SECY Points 1-3 (D3 Analysis) SECY Point 4 Action Credited in D3 Protection System Function Automatic Function Manual Function Diverse Automatic Function Diverse Manual Function Analysis?
Reactor Trip RPS 1 switch/train DAS (Note 3) 1 switch Yes (Note 4)
Containment Isolation Phase A ESF 2 switches - 1 switch Yes Containment Isolation Phase B ESF Note 1 - - -
Containment Purge Isolation ESF Note 2 - - -
Containment Spray Actuation ESF 2 switches/train - - -
CVCS Isolation ESF 2 switches - - -
Emergency Core Cooling System (ECCS) ESF 1 switch/train DAS 1 switch -
Emergency Feedwater (EFW) Actuation ESF 1 switch/train DAS 1 switch -
Emergency Feedwater (EFW) Isolation ESF 2 switches/train - 1 switch/SG Yes Main Feedwater Isolation ESF 2 switches - - -
Main Steam Line Isolation ESF 2 switches - 1 switch/SG Yes MCR Isolation ESF 1 switch/train - - -
Main Steam Depressurization Valve - - - 1 switch/SG Yes Safety Depressurization Valve - - - 1 switch Yes Note 1: Initiated upon Manual Core Spray actuation Note 2: Initiated upon Manual Core Spray or Manual Containment Isolation Phase A actuation Note 3: Also includes Turbine Trip and Main Feedwater Isolation Note 4: Manual trip required for Steam Generator Tube Rupture. Other scenarios credit DAS automatic signal.
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