Event Notification Report for November 21, 2023

CONCURRENT REPORT FOR DEGRADED CONNECTOR

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

"Pursuant to 10 CFR 70 Appendix A (c), Framatome is making this concurrent report:

"On November 2, 2023, Framatome made a courtesy telephone call to the Washington Department of Health (WDOH) about a degraded flexible connector on an exhaust duct downstream of the final HEPA filter.

"On November 3, 2023, WDOH requested that Framatome submit a report within ten days regarding this notification. Framatome will be submitting the requested report today, [November 13, 2023]."

DOSE GREATER THAN PRESCRIBED

The following information was provided by the Florida Department of Health via email:

"On 11/14/2023, a patient arrived in the nuclear medicine department for administration of their fourth cycle of Lutathera, a Lu-177 labeled radiopharmaceutical. The standard prescription of Lutathera for patients is 200 mCi in accordance with manufacturer's instructions for use and industry standard. The technologist assayed the vial and went through pre-administration procedures including a pre-treatment time out. 202 mCi of Lutathera was administered via IV in the right upper forearm over the course of thirty minutes. Start time of 1211 [EST] with an end time of 1241.

"Upon completion of the procedure, the technologist noticed that the patient had been prescribed a reduced activity of 150 mCi as opposed to the standard prescription of 200 mCi. Realizing this was a medical event, the technologist notified the radiation safety officer (RSO) at approximately 1330. The technologist also informed the nuclear medicine department supervisor. The RSO proceeded to inform the Authorized User (AU)/prescribing physician.

"The AU spoke with the patient explaining that the activity administered exceeded the prescribed amount. The physician explained that he did not expect any adverse effects from the higher than prescribed activity as the patient had received the standard activity of 200 mCi. The reduced activity of 150 mCi had been decided by the prescribing physician due to borderline renal function and the patient had tolerated all previous three administrations. Since the patient's renal function was not affected by the three previous administrations, the prescribing physician explained that the patient could have received the 200 mCi. The patient did not express concern upon being informed of this event.

"The AU also informed the referring physician.

"An initial report was made to [Florida] via telephone at 1529 in accordance with 64E-5.345(4)(a)."

Florida Incident Number: FL23-164

A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.

OFFSITE NOTIFICATION - REPORT TO ANOTHER GOVERNMENT AGENCY

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

"At 2138 EST on November 18, 2023, Harris Nuclear Plant notified the National Response Center of a biodegradable oil leak that entered the Harris Lake. The North Carolina Department of Environmental Quality will also be notified of this condition on November 19, 2023. The oil leak was less than one gallon and came from a temporary pump. The leak has stopped, and spill cleanup is underway. This condition did not violate any NRC regulations or reporting criteria. This notification is being made solely as a four-hour, non-emergency notification for a notification to another government agency. This event is reportable 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."

FITNESS FOR DUTY REPORT

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

"On November 18, 2023, the presence of alcohol was discovered inside the protected area. In accordance with the Constellation Fitness For Duty (FFD) Program, the individual has been escorted offsite and access to the plant denied pending the results of an investigation.

"This event is being reported under 10 CFR 26.719(b)(1) as it represents a significant FFD violation.

"The NRC Resident Inspector has been notified."

HPCI DECLARED INOPERABLE

The following information was provided by the licensee via email:

"At 0956 [CST] on November 20, 2023, accumulated gas was identified in the Dresden Unit 2 high pressure coolant injection (HPCI) system discharge header. As a result, the HPCI system was declared inoperable. Since HPCI is a single-train system, this is a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v)(D). The HPCI system was subsequently vented, and the accumulated gas has been removed, restoring the Dresden Unit 2 HPCI system to an operable status. All other emergency core cooling systems remained operable during this time period.

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

The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The licensee administratively verified the isolation condenser was operable after declaring HPCI inoperable as required by technical specifications. The licensee stated there was no increase in plant risk. The cause of gas accumulating in the Dresden Unit 2 HPCI discharge header is under investigation, and this issue has been entered into the licensee's corrective action program.