ENS 52321: Difference between revisions
Jump to navigation
Jump to search
StriderTol (talk | contribs) (Created page by program invented by Mark Hawes) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
||
| Line 17: | Line 17: | ||
| event date = 10/27/2016 00:21 CDT | | event date = 10/27/2016 00:21 CDT | ||
| last update date = 11/23/2016 | | last update date = 11/23/2016 | ||
| title = Loss | | title = Loss of Charging and Letdown Systems from the Reactor Coolant System | ||
| event text = At 0021 [CDT] on 10/27/16, Waterford 3 (WF3) experienced a loss of the charging and letdown systems from the Reactor Coolant System (RCS). Technical Specification (TS) 3.0.3 was entered due to the loss of all three charging pumps. Charging Pump AB was restored and aligned to replace Charging Pump A and WF3 exited TS 3.0.3 at 0055 on 10/27/16. | | event text = At 0021 [CDT] on 10/27/16, Waterford 3 (WF3) experienced a loss of the charging and letdown systems from the Reactor Coolant System (RCS). Technical Specification (TS) 3.0.3 was entered due to the loss of all three charging pumps. Charging Pump AB was restored and aligned to replace Charging Pump A and WF3 exited TS 3.0.3 at 0055 on 10/27/16. | ||
The cause of the loss of charging pumps was due to Refueling Water Storage Pool to Charging Pumps Suction Isolation, CVC-507, not opening as expected following a loss of Static Uninterruptible Power Supply (SUPS) 014AB during electrical troubleshooting. The cause of CVC-507 not opening is being investigated. Power was restored to SUPS 014AB at 0022. | The cause of the loss of charging pumps was due to Refueling Water Storage Pool to Charging Pumps Suction Isolation, CVC-507, not opening as expected following a loss of Static Uninterruptible Power Supply (SUPS) 014AB during electrical troubleshooting. The cause of CVC-507 not opening is being investigated. Power was restored to SUPS 014AB at 0022. | ||
Latest revision as of 21:43, 1 March 2018
| Where | |
|---|---|
Waterford  Louisiana (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+3.08 h0.128 days <br />0.0183 weeks <br />0.00422 months <br />) | |
| Opened: | Ryan Tregre 08:26 Oct 27, 2016 |
| NRC Officer: | Jeff Herrera |
| Last Updated: | Nov 23, 2016 |
| 52321 - NRC Website
| |
Waterford with 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |