ENS 49990
ENS Event | |
|---|---|
20:00 Apr 2, 2014 | |
| Title | Fire Related Unanalyzed Condition That Could Impact Credited Safe Shutdown Analysis |
| Event Description | This is a non-emergency notification. As part of converting to NFPA (National Fire Protection Association) 805, Catawba determined that there are conditions that may not ensure required equipment remains available under certain postulated fire scenarios. The determination concluded that the effects of a postulated fire in specific fire areas could prevent critical systems or components from performing their intended functions, potentially resulting in the inability to achieve and maintain safe shutdown.
Affected fire areas are as follows (elevation numbers are in parentheses): 1. Residual Heat Removal/Containment Spray Pump Room (522) 2. Unit 2 Auxiliary Feedwater Pump Room (543) 3. Unit 1 Auxiliary Feedwater Pump Room (543) 4. Auxiliary Building Common Area (543) 5. Unit 2 Electrical Penetration Room (560) 6. Unit 1 Electrical Penetration Room (560) 7. 2ETB Switchgear Room (560) 8. 1ETB Switchgear Room (560) 9. Unit 2 Battery Room (554) 10. Unit 1 Battery Room (554) 11. Auxiliary Building Common Area (560) 14. Unit 2 ETA Switchgear Room (577) 15. Unit 1 ETA Switchgear Room (577) 17. Unit 1 Cable Room (574) 18. Auxiliary Building Common Area (577) 20. Unit 1 Electrical Penetration Room (594) 45. Unit 1 Cable Room Corridor (574) 46. Unit 2 Cable Room Corridor (574) 48. Unit 2 Inside Doghouse 49. Unit 1 Inside Doghouse RB1. Unit 1 Reactor Building RB2. Unit 2 Reactor Building This is reportable as an unanalyzed condition that significantly degrades plant safety in accordance with 10 CFR 50.72(b)(3)(ii)(B). Fire watches have been implemented as appropriate in response to this determination. This condition has been entered into the Catawba Corrective Action Program. The NRC Resident Inspector will be notified. The licensee will notify the State of North Carolina and South Carolina and well as the local counties. |
| Where | |
|---|---|
Catawba  South Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| Time - Person (Reporting Time:+1.13 h0.0471 days <br />0.00673 weeks <br />0.00155 months <br />) | |
| Opened: | Aaron Michalski 21:08 Apr 2, 2014 |
| NRC Officer: | Dong Park |
| Last Updated: | Apr 2, 2014 |
| 49990 - NRC Website | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |