ENS 50836
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ENS Event | |
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01:18 Jan 20, 2015 | |
Title | High Energy Line Break Boundary Door Not Latching |
Event Description | A High Energy Line Break (HELB) boundary door was discovered not latching. HELB boundary affects both trains of safety related [480V] switchgear and was not operable for approximately seven minutes. [The licensee] entered the technical specification action statement, restored the door to functional, and exited the technical specification action statement.
The licensee notified the NRC Resident Inspector, the State of Connecticut and local officials. |
Where | |
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Millstone ![]() Connecticut (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
LER: | 05000423/LER-2015-001 |
Time - Person (Reporting Time:+743.52 h30.98 days <br />4.426 weeks <br />1.018 months <br />) | |
Opened: | Michel Ciccone 00:49 Feb 20, 2015 |
NRC Officer: | Mark Abramovitz |
Last Updated: | Feb 20, 2015 |
50836 - NRC Website
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Unit 3 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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