Event Notification Report for July 05, 2023

AGREEMENT STATE REPORT - LOST EXIT SIGN

The following is a synopsis of information provided by the Colorado Department of Public Health and Environment via email:

On 6/23/23, the licensee discovered that a tritium exit sign was lost. The exit sign was an Isolite Corporation Model 2000 containing 7.62 Ci of tritium (H-3). This is being reported under Colorado Regulations Section 4.51.1.1 (10 CFR 20.2202(a)(1)(i)).

Event Report ID No.: CO230017

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 GAUGE

The following information was provided by the Maryland Department of the Environment via telephone:

On 6/26/23 at 1116 EDT, the licensee was working at Howard University in Washington, D.C. when a Niton XLp 300 (lead base paint analyzer containing a maximum of 50 mCi of Cd-109) was stolen out of a vehicle. The Howard University and Washington, D.C. police were notified of the vehicle break in.

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 - STUCK SHUTTER

The following information was provided by the Louisiana Department of Environmental Quality (the Department) via email:

"On June 28, 2023, Dow Chemical Company notified the Department that a fixed gauge had a stuck shutter in the open position. Vega Model SHF2B serial number: 0368CR with a 500 mCi Cs-137, source serial number: N/A.

"The facility was using BBP Sales to perform their six-month audit on the gauges. BBP Sales sprayed penetrating lubricant on the shutter which loosened the shutter. They plan to come back to re-spray the shutter and make sure that it functions as designed."

LA Event Report Number: LA20230009

OFFSITE NOTIFICATION

The following information was provided by the licensee via phone and email:

"At 1530 [EDT] on July 3, 2023, Constellation Generation Company, LLC reported to the Illinois Environmental Protection Agency and the Illinois Emergency Management Agency and Office of Homeland Security (IEMA-OHS) that tritium concentrations in existing monitoring wells in a known [10 CFR] 50.75(g) recovery area were found higher than normal [at Quad Cities Nuclear Generating Station]. This higher than normal tritium concentration did not exceed any NRC regulations or reporting criteria and there is no indication of a liquid release beyond the site boundary. This notification is being made solely as a four-hour, non-emergency notification for a notification of other government agency in accordance with 10 CFR 50.72(b)(2)(xi).

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