ENS 53147: Difference between revisions
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| event date = 01/04/2018 14:10 EST | | event date = 01/04/2018 14:10 EST | ||
| last update date = 01/04/2018 | | last update date = 01/04/2018 | ||
| title = Manual Reactor Scram Due | | title = Manual Reactor Scram Due to Partial Loss of Offsite Power During Winter Storm | ||
| event text = On January 4, 2018, at 1410 hours EST, with the reactor at approximately 100 percent power and steady state conditions, the winter storm across the Northeast caused the loss of offsite 345 kV Line 342. Reactor power was reduced to approximately 81 percent and a procedurally required manual reactor scram was initiated. All control rods fully inserted. | | event text = On January 4, 2018, at 1410 hours EST, with the reactor at approximately 100 percent power and steady state conditions, the winter storm across the Northeast caused the loss of offsite 345 kV Line 342. Reactor power was reduced to approximately 81 percent and a procedurally required manual reactor scram was initiated. All control rods fully inserted. | ||
As a result of the reactor scram, indicated reactor water level decreased, as expected, to less than +12 inches resulting in automatic actuation of the Primary Containment Isolation Systems for Group II - Primary Containment Isolation and Reactor Building Isolation System, and Group VI - Reactor Water Cleanup System. | As a result of the reactor scram, indicated reactor water level decreased, as expected, to less than +12 inches resulting in automatic actuation of the Primary Containment Isolation Systems for Group II - Primary Containment Isolation and Reactor Building Isolation System, and Group VI - Reactor Water Cleanup System. | ||
Latest revision as of 20:41, 1 March 2018
| Where | |
|---|---|
| Pilgrim Massachusetts (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:+-1.22 h-0.0508 days <br />-0.00726 weeks <br />-0.00167 months <br />) | |
| Opened: | Michael Mcdonnell 17:57 Jan 4, 2018 |
| NRC Officer: | David Aird |
| Last Updated: | Jan 4, 2018 |
| 53147 - NRC Website
| |