Event Notification Report for June 25, 2026

EN Revision Imported Date: 6/25/2026

EN Revision Text: AGREEMENT STATE REPORT - STUCK OPEN GAUGE

The following information was provided by the Utah Division of Radiation Control via email:

"The Division of Waste Management and Radiation Control (DWMRC) was initially notified of a potential incident on June 11, 2026, at approximately 1530 MDT.

"On May 29, 2026, at approximately 1330 MDT, the licensee was verbally informed by a third-party service technician that two of their fixed gauges were stuck open.

"The licensee received the written report from a third-party service provider on June 11, 2026, at 1512 MDT. These gauges were in an HF [hydrofluoric] acid area.

"The gauges are an Ohmart SH-F1 Acid settler Interface 7LT502A and an Ohmart SHRM-P-84 containing 5 sources totaling 175 mCi.

"The licensee contacted the gauge manufacturer. The affected devices are scheduled to be replaced."

Utah Event Report ID No.: UT260005

* * * RETRACTION ON 06/24/2026 AT 1616 EDT FROM HEATHER MICKELSON TO ERNEST WEST * * *

The following information was provided by the Utah Division of Radiation Control via email:

This event is being retracted due to the gauges involved being the same gauges that were reported as having stuck open shutters in event notification number 58174.

Notified R4DO (Young) and NMSS Event Notifications (email)

AGREEMENT STATE REPORT - DAMAGED GAUGE

The following information was provided by Alabama Office of Radiation Control via email:

"On June 13, 2026, at approximately 2030 CDT, the licensee's knife gate on the tundish latch of the mold failed, allowing the mold to overflow and damaging the locking pin of a GS300 Cs-137 gauge. The gauge shutter was closed, the gauge was surveyed, and no abnormal readings were observed. The gauge was placed into storage. The Ronan service representatives arrived on June 18, 2026, to package the gauge for shipment back to Ronan for either repair or replacement."

Gauge information:
Model: Ronan GS300
Source: 70 mCi Cs-137
Serial number: To be determined

AGREEMENT STATE REPORT - STUCK RADIOGRAPHY SOURCE

The following information was provided by the Illinois Emergency Management Agency (the Agency) via phone and email:

"The Agency was contacted by the licensee on June 15, 2026, to advise on the recovery of a stuck Ir-192 source at the Marathon Plant in Robinson, IL. No exposures exceeding regulatory limits were reported.

"At 1400 CDT on June 15, 2026, a crew was performing radiography with a QSA 880-series Delta camera at the Marathon Plant in Robinson, IL, when the Ir-192 source became stuck in an unshielded position within the guide tube. Radiographers immediately extended barriers and notified the radiation safety officer and Marathon Plant safety staff. An individual authorized by the license to perform source retrievals responded and was able to return the source to its shielded position within the camera. The licensee indicated the source was out and unshielded for approximately 20 to 30 minutes. The radiographer reported that the source collimator was attached to a pipe with a vice clamp which likely created a tight angle in the guide tube. Retrieval personnel used specialized equipment to release the vice clamp and straighten the guide tube, which allowed the source to be safely cranked back to its shielded position within the camera. No exposure to the public was reported. Maximum exposure reported for the individual performing the source retrieval was 17 mrem.

"Inspectors conducted a reactive inspection on June 18, 2026, to review the incident details and confirm that no exposures to radiography personnel or the public exceeded regulatory limits. The event was then reported to NRC as an equipment failure."

Device Name: QSA 880-series Delta camera
S/N: 27296P
Source: 37.9 Ci Ir-192

Illinois item number: IL260017