23:15 Apr 12, 2019
High Energy Line Break Door Found in Incorrect Position Resulting in Lpci and Core Spray Being Inoperable
At approximately 1815 CDT on April 12, 2019, High Energy Line Break (HELB) Door-410A in the Reactor Building was discovered in the closed position. HELB Door-410B was previously closed for maintenance. Either Door-410A or Door-410B must be open to support the current HELB analyses. With both doors closed, this is considered an unanalyzed condition resulting in the loss of a post-HELB safe shutdown path.
This condition is being reported under 10 CFR 50.72(b)(3)(ii) as an unanalyzed condition that significantly degrades plant safety and 10 CFR 50.72(b)(3)(v) as an event or condition that could have prevented the fulfillment of a safety function.
The condition was resolved at approximately 1845 CDT on April 12, 2019 when Door-410A was blocked open. The health and safety of the public was not affected by this condition.The NRC Resident has been notified."
Minnesota (NRC Region 3)
|10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition|
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
|LER:||look for an ler...|
|Time - Person (Reporting Time:+2.82 h|
02:04 Apr 13, 2019
|NRC Officer:||Donald Norwood|
|Last Updated:||Apr 13, 2019|
|53997 - NRC Website|