Event Notification Report for March 26, 2020

DEGRADED CONDITION

"On March 26, 2020, while McGuire Unit 2 was shut down for a scheduled refueling outage, the reactor vessel head penetrations were being examined in accordance with the in-service Inspection Program. Ultrasonic examinations identified a relevant indication in the Control Rod Drive Mechanism nozzle number 35 that did not meet the acceptance criteria under ASME, Section XI IWB-3600, 'Analytic Evaluation of Flaws.' Actions to address the relevant indication will be taken in accordance with the applicable codes, standards, and regulations.

"This event is being reported as an eight-hour non-emergency notification per 10 CFR 50.72(b)(3)(ii)(A).

"The relevant indication has no impact on the health and safety of the public or station employees.

"The NRC Resident Inspector has been notified."

* * * RETRACTION ON 3/29/2020 AT 1700 EDT FROM TOM BERNARD TO BRIAN P. SMITH * * *

"McGuire is retracting the eight hour non-emergency notification made on March 26, 2020, at 10:45 ET (EN#54614). A subsequent evaluation determined that the suspect indication identified during ultrasonic examination of Control Rod Drive Mechanism nozzle number 35 is not service induced nor representative of primary water stress corrosion cracking (PWSCC). The indication has been classified as "non-relevant" and is not reportable as a degraded condition.

"The senior NRC Resident Inspection has been notified."

Notified R2DO (Miller).

LOST AND FOUND DENSITY GAUGE

On 3/26/2020, at 0730 CDT, a CPN density gauge (Model CPN Corp MC1-DR, S/N 60103007; 10 milliCuries of Cesium-137 and 50 mCi of Americium-241 source) was reported stolen out of a technician's vehicle and was recovered. The licensee notified the Indianapolis Police Department and the density gauge was recovered when a bystander found the case abandoned on the street. The licensee inspected and surveyed the properly secured density gauge and observed no damage or leakage. The licensee states there was no radiological impact to the public.

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

AGREEMENT STATE REPORT - DAMAGED MOISTURE DENISTY GAUGE CASE

The following was received via email:

"[The licensee] notified the [Florida Bureau of Radiation Control] BRC that a Soil Moisture Density Gauge was 'bumped over' at a construction site in [Clearwater, FL] by a machine while in use during a standard count. [The licensee] claims there was no damage to the sources, only damage to the case. The area has been cordoned off, no information on site exclusion prior to the impact has been reported. The [Radiation Safety Officer] RSO has not returned phone calls at this time. The [Florida State Watch Office] FL SWO and [Department of Environmental Protection] DEP have contacted the BRC about this incident. An inspector from [the Florida western office] is requested at this time."

Florida Incident Report Number: FL20-045

* * * UPDATE ON 03/26/2020 AT 1533 EDT FROM MARK SEIDENSTICKER TO CATY NOLAN * * *

The following was received via phone call:

The gauge was bumped and dragged approximately 10 feet at the construction site during a calibration. The source was retracted. There was no release or visible damage.

Notified R4DO (Kellar) and NMSS Events (via email).