07:00 Apr 11, 2019
Control Room Envelope Inoperable Due to Door Handle Detaching
On April 11, 2019, at 0200 CDT the shift operating crew declared the control room envelope inoperable in accordance with Technical Specification (TS) 18.104.22.168 due to the door handle for Door 86 (H&V Airlock Access Door) being detached. Operations entered TS 22.214.171.124 action b, which requires that with one or more control room emergency air filtration trains inoperable due to inoperable control room envelope boundary in MODES 1, 2, 3, or 4, then: 1. Immediately initiate action to implement mitigating actions; 2. Within 24 hours
2.777778e-4 days, verify mitigating actions ensure control room envelope occupant exposures to radiological, chemical, and smoke hazards will not exceed limits; and 3. Within 90 days, restore the control room envelope boundary to OPERABLE status. Action b.1 was completed by sealing the hole in Door 86 at 0232 CDT. This event is reportable pursuant to 10 CFR 50.72(b)(3)(v)(D), 'event or condition that could have prevented fulfilment of a safety function of structures or systems that are needed to (D) mitigate the consequences of an accident,' due to the control room envelope being inoperable. The licensee notified the NRC Resident."
Louisiana (NRC Region 4)
|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:+3.47 h|
10:28 Apr 11, 2019
|NRC Officer:||Jeffrey Whited|
|Last Updated:||Apr 11, 2019|
|53991 - NRC Website|
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