ENS 51683
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ENS Event | |
|---|---|
08:15 Jan 25, 2016 | |
| Title | Manual Reactor Trip Due to Elevated Condenser Sodium Levels |
| Event Description | At 0315 EST on 1/25/16, Calvert Cliffs Unit 1 was manually tripped from 10 percent power due to elevated condenser sodium levels. All systems responded per design. Main Feed was secured and auxiliary feed water was initiated. The elevated sodium levels are believed to be due to a condenser tube leak. The reactor is currently shutdown and stable in Mode 3 and will remain in Mode 3 until repairs are effected. Unit 2 was not affected and remains at full power.
The Licensee has notified the NRC Resident Inspector. |
| Where | |
|---|---|
Calvert Cliffs  Maryland (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| Time - Person (Reporting Time:+-2.5 h-0.104 days <br />-0.0149 weeks <br />-0.00342 months <br />) | |
| Opened: | Ervin Lyson 05:45 Jan 25, 2016 |
| NRC Officer: | Daniel Mills |
| Last Updated: | Jan 25, 2016 |
| 51683 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | Yes, Manual Scram |
| Before | Power Operation (10 %) |
| After | Hot Standby (0 %) |
Calvert Cliffs with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
WEEKMONTHYEARENS 569972024-02-28T18:50:00028 February 2024 18:50:00
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