Event Notification Report for March 01, 2018

UNANALYZED CONDITION FOR TORNADO GENERATED MISSILES

"On March 1, 2018, during evaluation of protection for Technical Specifications (TS) equipment from the damaging effects of tornado generated missiles, Quad Cities Station identified a non-conforming condition in the plant design such that specific TS equipment is considered to not be adequately protected from tornado generated missiles. Tornado generated missiles could strike the Unit l, Unit 1/2, and Unit 2 Emergency Diesel Generator intake and exhaust stacks, day tank vents, and main fuel oil tank vents. This could result in crimping of the intake/exhaust stacks and vents, which would affect the ability of the Emergency Diesel Generators to perform their function if a tornado would occur.

"This condition is reportable in accordance with 10 CFR 50.72(b)(3)(ii)(B) as a condition that results in the nuclear power plant being in an unanalyzed condition that significantly degrades plant safety, and 10 CFR 50.72(b)(3)(v)(D) as a condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident.

"This condition is being addressed in accordance with NRC enforcement guidance provided in Enforcement Guidance Memorandum (EGM) 15-002, 'Enforcement Discretion for Tornado-Generated Missile Protection Noncompliance,' Revision 1, and DSS-ISG-2016-01, 'Clarification of Licensee Actions in Receipt of Enforcement Discretion per Enforcement Guidance Memorandum EGM 15-002, Enforcement Discretion for Tornado-Generated Missile Protection Noncompliance,' Revision 1. Compensatory measures have been implemented in accordance with these documents.

"The NRC Resident Inspector has been informed of this notification."

* * * RETRACTION FROM NICK JOHNSON TO HOWIE CROUCH AT 1900 EST ON 11/7/19 * * *

"The purpose of this notification today (11/07/19) is to retract event notification #53235 made on March 1, 2018, for Quad Cities Station. Additional review determined that the current design of all three Emergency Diesel Generators and associated Day Tanks and Main Fuel Oil Storage Tanks Vents is consistent with the licensing basis for Quad Cities Station. There was no non-conformance of Quad Cities' tornado missile protection design, and the EDGs were operable at the time the event notification was made.

"Therefore, this event does not meet the criteria of 10 CFR 50.72(b)(3)(ii)(B) and 10 CFR 50.72(b)(3)(v)(D) and ENS report #53235 is being retracted.

"The NRC Resident Inspector has been informed of this notification."

Notified R3DO (Peterson).

POTENTIAL TORNADO MISSILE VULNERABILITIES

"During review of protection of equipment from damaging effects of tornados, Point Beach Nuclear Plant identified a potential vulnerability for the turbine driven auxiliary feedwater pumps due to steam supply piping that is not routed through a Class 1 structure. Immediate compensatory measures were taken to mitigate the potential consequences of a tornado generated missile impact.

"This condition is reportable per 10 CFR 50.72(b)(3)(ii)(B) and per 10 CFR 50.72(b)(3)(v)(A) and (D). The identified vulnerability is being addressed in accordance with EGM 15-002 and DSS-ISG-2016-01, enforcement discretion memorandum and interim guidance document for resolution of noncompliance with tornado-generated missile protection.

"The NRC Resident Inspector has been notified."

UNPLANNED LOSS OF TECHNICAL SUPPORT CENTER

"This is an eight-hour, non-emergency notification for a loss of emergency assessment capability. This event is reportable in accordance with 10 CFR 50.72(b)(3)(xiii) because the discovered condition affects the functionality of an emergency response facility. Due to the discovery of a breaker coordination issue during an NRC Inspection, the power supply breakers to the Technical Support Center (TSC), including the ventilation system, has been opened to address the condition. This will make the TSC non-functional.

"If an emergency is declared requiring TSC activation during this period, the Alternate TSC will be staffed and activated using existing emergency planning procedures. The Emergency Response Organization team has been notified to respond to the Alternate TSC in the event of an ERO [Emergency Response Organization] activation.

"There was no impact on the health and safety of the public or plant personnel.

"The NRC Resident Inspector has been notified."

FITNESS FOR DUTY - POSITIVE RESULT FOR ALCOHOL

A non-licensed, supervisory employee was determined to be under the influence of alcohol during a random test. The employee's unescorted access was terminated.

The NRC Resident Inspector has been notified.