ENS 51800: 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 16: | Line 16: | ||
| event date = 03/17/2016 15:15 CDT | | event date = 03/17/2016 15:15 CDT | ||
| last update date = 03/17/2016 | | last update date = 03/17/2016 | ||
| title = Valid Engineered Safety Feature System Actuation Due | | title = Valid Engineered Safety Feature System Actuation Due to Lightning Strike | ||
| event text = At 1515 [CDT] on March 17th 2016, Grand Gulf Nuclear Station received a valid actuation signal of the Division 2 Engineered Safety Feature (ESF) Load Shedding and Sequencing system. The actuation signal was most likely caused by a lightning strike to the offsite power source supplying this ESF bus. This caused a loss of the in service shutdown cooling system and associated system actuations. | | event text = At 1515 [CDT] on March 17th 2016, Grand Gulf Nuclear Station received a valid actuation signal of the Division 2 Engineered Safety Feature (ESF) Load Shedding and Sequencing system. The actuation signal was most likely caused by a lightning strike to the offsite power source supplying this ESF bus. This caused a loss of the in service shutdown cooling system and associated system actuations. | ||
Grand Gulf Nuclear Station (GGNS) was in Mode 5 at 85 [degrees] F coolant temperature. Reactor Cavity was flooded to High Water Level with a time to reach 200 [degrees] F of 7.5hrs. GGNS is conducting a planned refuel outage with core alterations in progress. Systems were aligned as follows: | Grand Gulf Nuclear Station (GGNS) was in Mode 5 at 85 [degrees] F coolant temperature. Reactor Cavity was flooded to High Water Level with a time to reach 200 [degrees] F of 7.5hrs. GGNS is conducting a planned refuel outage with core alterations in progress. Systems were aligned as follows: | ||
Latest revision as of 21:45, 1 March 2018
| Where | |
|---|---|
Grand Gulf  Mississippi (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(iv)(A), System Actuation 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat | |
| LER: | 05000416/LER-2016-001 |
| Time - Person (Reporting Time:+3 h0.125 days <br />0.0179 weeks <br />0.00411 months <br />) | |
| Opened: | Sean Dunfee 23:15 Mar 17, 2016 |
| NRC Officer: | Steven Vitto |
| Last Updated: | Mar 17, 2016 |
| 51800 - NRC Website
| |
Grand Gulf with 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |