Event Notification Report for December 06, 2017

AGREEMENT STATE REPORT - EQUIPMENT MALFUNCTION - STUCK SHUTTER

The following was received via fax:

"On Wednesday, December 6, 2017, a contract technician from BBP Sales conducted Georgia-Pacific semiannual shutter checks. It was found that a handle would not turn to close a shutter for a level gauge. The gauge was a Ronan holder model SAI-F37 manufactured in 1987. The sealed source serial number is MI104. This is a 150 mCi Cesium-137 source.

"Louisiana Department of Environmental Quality (LDEQ) was notified on December 11, 2017.

"The source holder will have to be replaced as there is no way to remove the shutter for repair."

LA Report ID: LA20170018

DIESEL FUEL OIL TANK SUPPLY NON-CONFORMING WITH LICENSING BASIS FOR TORNADO GENERATED MISSILES

"On December 6, 2017, during evaluation of protection for Technical Specification (TS) equipment from the damaging effects of tornado generated missiles, Three Mile Island Nuclear 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. A tornado could generate a missile that could strike the emergency diesel generator (EDG) fuel oil supply tank (DFT) vent stack. This could result in crimping of the stack, which could affect the ability of the DFT to perform its design function if such a tornado would occur.

"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)(D) 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 mitigate the consequences of an accident.

"This condition is being addressed in accordance with NRC enforcement guidance provided in EGM 15-002 and DSS-ISG-2016-01. Compensatory measures have been implemented in accordance with these documents.

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

AGREEMENT STATE REPORT - NUCLEAR MEDICINE EMPLOYEE OVER EXPOSURE

The following report was received via e-mail:

"On December 6, 2017, the Radiation Safety Officer at Glendale Adventist Medical Center notified the Principal Radiation Protection Specialist at Los Angeles County Radiation Management that at Glendale Adventist Medical Center, a nuclear medicine employee had unusually high readings on his Landauer dosimeters over the last several months: 490 mrem DDE [deep dose equivalent](July 2017), 490 mrem DDE (August 2017), 892 mrem DDE (September 2017), 12,870 mrem DDE (October 2017), and 166 mrem DDE (November 2017)."

California Report: 120617

* * * RETRACTION ON 1/30/2020 AT 1232 EST FROM THOMAS MIKO TO ANDREW WAUGH * * *

The following information was received from the state of California via email:

"The Radiation Safety Officer at Glendale Adventist Medical Center in Glendale, California performed an in-house investigation, and has stated in his report to Los Angeles County that he does not believe that the employee actually received the exposures recorded on his dosimeters. Policy and procedure changes were implemented to avoid having employee dosimeters artificially exposed to x-ray equipment (while not being worn by the employee), which they believe to be the cause of the elevated exposure reports. Los Angeles County did not rescind this report until now, because they waited to perform reviews of the same employee's dosimetry records for the length of 2018 and 2019. No new incidents have occurred. Please rescind the attached report that was submitted in December of 2017."

Notified R4DO (Dixon) and NMSS Events (email).