ENS 46334

v t e ENS Event
09:22 Oct 14, 2010
Title	Both Trains of Control Room Air Conditioning Inoperable
Event Description	While Control Room Air Conditioning System 'A' was tagged out for planned maintenance, the 'B' Control Room Air Conditioning System tripped and could not be restarted. TS 3.7.4 Condition B was entered at 0422 [CDT] 10/14/10, for both Control Room Air Conditioning systems inoperable. Temporary cooling was used to assist in maintaining control room temperature below TS limit of 90 degrees F. Corrective maintenance was performed on Control Room Air Conditioning System 'B' and it was restored to functional status at 1017 [CDT] 10/14/10. No TS limits were exceeded and no plant shutdown actions were required. The licensee noted that their report was late and did not meet the 8-hour reporting criteria. The licensee informed the NRC Resident Inspector.

ENS 46334 +/-
Where
Grand Gulf Mississippi (NRC Region 4)
Reporting

10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
Time - Person (Reporting Time:+5.88 h0.245 days <br />0.035 weeks <br />0.00805 months <br />)
Opened:	Ricky Liddell 15:15 Oct 14, 2010
NRC Officer:	Steve Sandin
Last Updated:	Oct 14, 2010
46334 - NRC Website
v • d • e

v t e Emergency Notification System
Grand Gulf with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
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