Event Notification Report for August 15, 2017

UNUSUAL EVENT DUE TO FIRE ALARM IN CONTAINMENT

On August 15, 2017 at 0748 EDT, an Unusual Event was declared at Millstone Unit 2 due to a fire alarm indication in containment that was unable to be verified extinguished within 15 minutes. Current containment parameters do not indicate an actual fire. A containment entry is planned to verify that there is no fire. Unit 2 continues at 100% power. Unit 3 was unaffected. The NRC remains in Normal mode.

The licensee notified the NRC Resident Inspector and State and local government agencies.

Notified DHS SWO, FEMA Ops Center, DHS NICC. Notified FEMA National Watch and Nuclear SSA via E-mail.


* * * UPDATE FROM TODD STRINGFELLOW TO DONALD NORWOOD AT 0953 EDT ON 8/15/2017 * * *

At 0951 EDT, the Unusual Event was terminated. No signs of an actual fire were present upon containment entry. All alarms are cleared and they are investigating the cause of the alarm.

The licensee notified the NRC Resident Inspector and State and local government agencies.

Notified R1DO (Gray), NRR EO (Miller), and IRD (Gott). Notified DHS SWO, FEMA Ops Center, DHS NICC. Notified FEMA National Watch and Nuclear SSA via E-mail.

DISCOVERY OF NON-CONFORMING CONDITIONS DURING TORNADO HAZARDS ANALYSIS

"On August 15, 2017, during evaluation of protection for Technical Specification (TS) equipment from the damaging effects of tornados, Callaway Plant identified a non-conforming condition in the plant design such that specific Technical Specification equipment is considered not to be adequately protected from tornado missiles.

"The recirculation lines for all three independent trains of Auxiliary Feedwater (AFW) connect to the Condensate Storage Tank (CST) inside the CST Valve House, which is not a tornado missile-resistant structure. The direct impact by a design basis missile could result in crimping of the recirculation lines, thereby creating the potential to cause damage to the Train A and B Motor-Driven Auxiliary Feedwater Pumps (MDAFPs) and the Turbine-Driven Auxiliary Feedwater Pump (TDAFP) by restricting recirculation flow to less than the design requirements.

"This condition is reportable per 10 CFR 50.72(b)(3)(ii)(B) for any event or condition that results in the nuclear power plant being in an unanalyzed condition that significantly degrades plant safety, and per 10 CFR 50.72(b)(3)(v) for any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to (A) shut down the reactor and maintain it in a safe shutdown condition, (B) remove residual heat, or (D) mitigate the consequences of an accident.

"These conditions are being addressed in accordance with NRC's Enforcement Guidance Memorandum EGM 15-002 and Interim Staff Guidance DSS-ISG-2016-01 [enforcement discretion and interim guidance documents].

"The NRC Resident Inspector has been notified."

AGREEMENT STATE REPORT - STUCK SOURCE

The following was received from the State of Louisiana via email:

"[On] 08/16/2017, [at] 1315 [CDT], [the RSO for Turner Specialty Services] called the Radiation Section of LDEQ [Louisiana Department of Environmental Quality] to report a source retrieval that occurred on 08/15/2017 [at] 2215 [CDT] at SALSOL CHEMICALS. The report was forwarded to the inspection staff on 08/17/2017.

"The camera was being setup initially to be used on this temporary jobsite at the Chemical Plant. The equipment evaluation and jobsite was being prepared for the radiographic exposures. The exposure device mis-connect/disconnect incident happened on the initial exposure crankout. The source remained in the collimator until the source could be manually returned to the shielded position. The equipment is a QSA Global Exposure device, Model 880 Delta, S/N D6149 loaded with 61.2 Ci Ir-192 source. The source is an AEA Technology Model A-424-9.

"This licensee is approved for source retrievals under their O&E Safety Procedures. The RSO and associates were able to return the source to the shielded position with minimal personnel exposures. A retrieval crew was assembled and they were able to retrieve the source and return it to the shielded position. After the source was in the shielded position, a Go/NoGo test and a misconnect test were performed on the controls and exposure device. Two radiographers and a site RSO conducted the retrieval activities. The retrieval process was safely completed later on the night of 08/15/2017. The individuals involved in the retrieval were wearing Instadose Personnel monitors that recorded exposures of [approximately] 250 mRem. The source assembly was sent to QSA Global, Inc. for further evaluation. Any adverse results of the evaluation will be forwarded as additional information.

"There was no threat of radiation exposures to the SALSOL CHEMICALS employees or any adverse threat to the Health and Safety to the general public."

Event Report ID No.: LA170013

FITNESS FOR DUTY - BLIND SAMPLE RETURNED WITH INACCURATE RESULTS

"A blind sample provided from an independent laboratory to fleet testing facility was returned with inaccurate results. This is in violation of 10 CFR 26.719(c)(3) and requires a 24-hour report."

The licensee has notified the NRC Resident Inspector.