Event Notification Report for November 11, 2020

This material event contains a "Less than Cat 3" level of radioactive material.

AGREEMENT STATE REPORT - STOLEN MOISTURE DENSITY GAUGE

The following is a summary of information received from the Colorado Department of Public Health and Environment:

The licensee reported that an InstroTek 3500 moisture/density gauge was stolen from the licensee's truck at 0730 MST on 11/3/20. The gauge was secured in the truck, and the truck was parked near the gauge user's house when the gauge was stolen. The police have been notified of this event.

Sealed Sources: 11 mCi of Cs-137 and 44 mCi of Am-241:Be

Event Report ID No.: CO 200063

THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

This material event contains a "Category 2" level of radioactive material.

EN Revision Imported Date: 11/6/2020

EN Revision Text: AGREEMENT STATE REPORT - LOST OR MISSING RADIOGRAPHY CAMERA

The following is a summary of the information received from the State via email:

On 11/3/20, the licensee reported to the Oklahoma Department of Environmental Quality that a radiography camera was missing. The device was shipped from a Stanley facility in Pennsylvania to Oklahoma. The shipping paper arrived at the Oklahoma facility on 11/2/20, but the package containing the camera was missing. On 11/2/20, Stanley notified the shipment carrier of the missing package.

The radiography camera is a QSA Global Model 880 Delta (S/N: D14241) with a 25.5 Ci Ir-192 source.

* * * UPDATE ON 11/5/20 AT 1608 EST FROM KEVIN SAMPSON TO ANDREW WAUGH * * *

The device has been located by the shipment carrier and is scheduled to be returned to the licensee.

Notified R4DO (Proulx), NMSS (Rivera-Capella), IR MOC (Grant), ILTAB (Clark), and NMSS Events Notification (email).

THIS MATERIAL EVENT CONTAINS A "CATEGORY 2" LEVEL OF RADIOACTIVE MATERIAL

Category 2 sources, if not safely managed or securely protected, could cause permanent injury to a person who handled them, or were otherwise in contact with them, for a short time (minutes to hours). It could possibly be fatal to be close to this amount of unshielded radioactive material for a period of hours to days. These sources are typically used in practices such as industrial gamma radiography, high dose rate brachytherapy and medium dose rate brachytherapy. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

AGREEMENT STATE REPORT - A SHUTTER STUCK OPEN ON A GAUGE

The following was received from the state of Tennessee via email:

"Licensee noticed on 11/2/2020 that a shutter was stuck open on a gauge. The position was confirmed on 11/3/2020. The licensee is in the process of reaching out to the manufacturer to determine the process for repair."

The gauge is an Ohmart model SHD with a 50 mCi Cs-137 source (S/N: M-0720).

Tennessee Incident Number: TN-20-165.

INADVERTENT/MALFUNCTIONING SIREN ACTIVATION

"On November 10, 2020, at 1827 CST, River Bend Station (RBS) received a report of a single inadvertent and malfunctioning siren which is part of the Emergency Notification System. The siren was heard by residences in the area and they contacted local agencies, who in turn contacted RBS.

"This siren activation was not related to any condition or event and no emergency has occurred at RBS. RBS has notified the appropriate authorities and the Governor's Office of Homeland Security and Emergency Preparedness of the inadvertent siren activation. RBS has sent a team to locally disable the siren to prevent any further inadvertent sounding and it is now disabled. A press release from Entergy is not planned at this time.

"The NRC resident has been notified of the event."

The licensee also notified the East and West Feliciana Parish Authorities. If an emergency notification were required, there is overlap of working sirens to cover the area of the siren that is out of service.

NOTIFICATION OF STEAM GENERATOR TUBE DEGRADATION

"At 1311 EST on November 11, 2020, it was determined, after evaluation of the Watts Bar Nuclear Plant (WBN) Unit 2 Steam Generator (SG) tube eddy current test data collected during the on-going refueling outage, that the WBN Unit 2 Reactor Coolant System pressure boundary did not meet the performance criteria for SG tube structural integrity. Specifically, SG number 3 failed the condition monitoring assessment for conditional burst probability. WBN has completed tube plugging and additional corrective actions are in progress. This event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(ii)(A).

"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."