ENS 56203
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ENS Event | |
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05:06 Nov 4, 2022 | |
Title | Both Trains of Control Room Area Ventilation Air Conditioning System Inoperable |
Event Description | The following information was provided by the licensee via email:
At 0006 CDT on 11/04/2022, it was discovered that both trains of control room area ventilation air conditioning systems were simultaneously inoperable. Due to this inoperability, the system was in a condition that could have prevented the fulfillment of a safety function. Therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v). There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified. The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance: With both trains of control room area ventilation air conditioning systems inoperable, the plant entered a 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> limiting condition for operation (LCO). One train had been restored at the time of report which extends the LCO to 30 days. |
Where | |
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Lasalle Illinois (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+2.97 h0.124 days <br />0.0177 weeks <br />0.00407 months <br />) | |
Opened: | Wes Keller 08:04 Nov 4, 2022 |
NRC Officer: | Adam Koziol |
Last Updated: | Nov 4, 2022 |
56203 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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