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Planned maintenance activities will commence today (September 2, 2015) on the Quad Cities Station TSC. The activity involves inspection and replacement of the TSC charcoal absorber trays and canisters on the filtration portion of the Air Handling Unit (AHU). Work on the charcoal absorbers affects habitability of the TSC during a declared emergency when radiological conditions require activation of the filtration portion of the AHU. The duration of maintenance is currently planned to begin on September 2, 2015 at 2100 hours (CDT) and is estimated to be completed by September 3, 2015 at 1100 hours (CDT), depending on any conditions discovered during the inspections. Since restoration from this maintenance activity is expected to take longer than the required activation time of the TSC, this notification is being made. If an emergency is declared requiring TSC activation during this period, the TSC will be staffed and activated using existing emergency planning procedures unless the TSC becomes uninhabitable due to ambient temperature, radiological, or other conditions. If relocation of the TSC becomes necessary, the Station Emergency Director will relocate the TSC staff to an alternate location in accordance with applicable site procedures. This event is reportable per 10CFR50.72(b)(3)(xiii) since the maintenance activity affects an emergency response facility. The NRC Resident Inspector has been notified (and the Illinois Emergency Management Agency).

• * * UPDATE PROVIDED BY ALAN MEURS TO JEFF ROTTON AT 1625 EDT ON 09/03/2015 * * *

At 1430 CDT on September 3, 2015, the maintenance activity was completed and the TSC ventilation was restored. The licensee notified the NRC Resident Inspector and the Illinois Emergency Management Agency. Notified R3DO (Skokowski).