Event Notification Report for June 12, 2023

AGREEMENT STATE - LOST BRACHYTHERAPY SOURCE
The following was received by email from the South Carolina Department of Health and Environmental Control (The Department):

"The Department was notified on 05/09/23, that that one (1) Iodine-125 manual brachytherapy sealed source was lost or missing. The sealed source is a Bard Brachytherapy, Inc. Model STM 1251 with an activity of 0.34 mCi (12.58 MBq). The licensee reported that during a prostate seed implant procedure that occurred on 04/21/23, a single seed was possibly lost and remains unaccounted for. The licensee reported that during the procedure, an incorrectly configured strand was identified in the QuickLink device. This strand was ejected into the transfer device then pushed out into the sterile shielded shipping container so that the loose seeds could be counted. When assessing the seeds in the container, it was observed that one of the two I-125 seeds in this strand was missing. The medical physicists used a Geiger-Mueller counter to immediately survey the sterile cart and surrounding areas. The cart, floor, physician hands, nurse hands, and scrubs were all surveyed and no exposure was detected above background. Several other area surveys were also performed after the procedure was completed. The manual brachytherapy sealed source could not be accounted for.

"Department inspectors were dispatched to the facility on 05/17/23, and were unable to locate the missing sealed source. This event is still under investigation by the South Carolina Department of Health and Environmental Control."

SC internal ID number is: SC230011



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 - STOLEN/FOUND SOURCE

The following information was provided by the Pennsylvania Department of Radiation Protection (DEP) via email:

"On June 1, 2023, an employee of the licensee reported to police that their vehicle, with a nuclear density gauge in it, was stolen earlier that day. The vehicle was located and returned to the employee within a few hours. The gauge was still properly stored in the trunk and untouched with no evidence that the trunk lock, gauge chain, chain lock, or gauge case had been tampered with. The DEP has been in contact with the licensee and will update this event as soon as more information is provided.
"Troxler Model Number: 3430
"Serial Number: 29846
"Cesium 137, 9 millicuries; Americium 241:Be, 44 millicuries"

Event Report ID No: 230017

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 - STOLEN MOISTURE DENSITY GAUGE

The following was received by email from the Florida Department of Health, Bureau of Radiation Control (BRC):

"BRC received a call at 1045 EDT from the radiation safety officer of ECS Florida LLC. The caller stated that an Instrotek 3500 (#4012, AmBe K893/19, Cs137 BG1008) moisture density gauge was stolen from the back of a pickup truck on its way to a job site. The vehicle made several stops on the way and they do not know at which location it was stolen."

Florida Incident Number: FL23-085

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 - FOUND DENSITY GAUGE

The following was received by email from the Texas Department of State Health Services [the Agency]:

"On June 1, 2023, a steel mill notified the Agency that a load of scrap coming into their facility set off the radiation alarm. The source was identified as an inline-type density gauge and it was secured at their facility until more information could be identified on the device to determine the owner. On June 5, 2023, the facility found a phone number on the gauge that stated to call Schlumberger if the gauge was found. Schlumberger was contacted and stated the gauge had been sold to Liberty Oilfield Services INC. The Agency and steel mill contacted the licensee which picked up the gauge the same day. The gauge was a Thermo-Fisher model 5192, Serial # B7615 containing 200 mCi (7.4 GBq) of Cesium-137. An investigation is ongoing into how the licensee lost possession of the gauge."

Texas Incident number: 10024.
NMED National Event number: TX230026.

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

AUTOMATIC ACTUATION OF "B" EMERGENCY DIESEL GENERATOR EMERGENCY POWER SEQUENCER

The following information was provided by the licensee via email:

"On April 12, 2023, with Seabrook Station Unit 1 in Mode 6 at zero percent power, a valid actuation of the 'B' emergency diesel generator (EDG) emergency power sequencer occurred due to a loss of power to the 'B' train emergency bus. The 'B' EDG was removed from service for scheduled maintenance during this time.

"This event is being reported pursuant to 10 CFR 50.72(b)(3)(iv)(A) for a valid actuation of the 'B' EDG emergency power sequencer.

"The NRC Resident Inspector has been notified."

ACTUATIONS OF REACTOR PROTECTION SYSTEM

The following information was provided by the licensee via email:

"On 05/06/2023, at 1552 [EDT] with Seabrook Unit 1 in Mode 3 at zero percent power, while performing digital rod position indication system surveillance testing, shutdown bank 'E' stopped withdrawing. In response, the reactor trip breakers were manually opened, initiating a valid actuation of the reactor protection system (RPS).

"Subsequently, at 2253 while continuing to perform digital rod position indication system surveillance testing, shutdown bank 'C 'stopped inserting. Reactor trip breakers were manually opened, initiating a valid actuation of the RPS.

"The RPS responded as designed during both events, and both actuations are being reported pursuant to 10 CFR 50.72(b)(3)(iv)(A).

"The NRC Resident Inspector has been notified."

TEMPORARY LOSS OF CONTROL OF RADIOGRAPHY EXPOSURE DEVICE

The following is a summary of information provided by the licensee via phone and email:

On 6/7/23 at 1040 ADT, the licensee (Mistras Group, Inc.) was providing gamma radiography services in Prudhoe Bay, Alaska when an industrial radiography source (QSA 880 Delta, SN 73648M, Ir-192, 115.6 Ci) cable failed to retract. The device was moved safely to a location where repairs were made to the cable. No overexposures were associated with this event or during recovery operations. No radiation exposure was received by the general public.

UNANALYZED CONDITION

The following information was provided by the licensee via email:

"At 0130 EDT on June 11, 2023, it was discovered that the Beaver Valley Power Station, Unit No. 2 auxiliary building door A-35-5A, credited for tornado missile protection of the primary component cooling water system, was open and unlatched. Upon discovery, the door was shut and latched. This event is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(ii)(B) and 10 CFR 50.72(b)(3)(v)(B). There was no impact on the health and safety of the public or plant personnel.

"The NRC Resident Inspector has been notified."