Event Notification Report for August 26, 2024

EN Revision Imported Date: 8/26/2024

EN Revision Text: PART 21 REPORT - NON-COMPLIANT INSULATED CONDUCTOR

The following is a synopsis of information received via fax:

A reel of insulated conductor was found non-compliant due to failure of insulation tensile and elongation at break test following air oven aging. Wire from the non-compliant reel was delivered to nine plants.

Affected plants: Wolf Creek, Dresden, LaSalle, Limerick, Peach Bottom, Arkansas Nuclear One, Waterford, Susquehanna, and Davis Besse.

Reporting company point of contact:
RSSC Wire and Cable LLC
dba Marmon Industrial Energy and Infrastructure
20 Bradley Park Road
East Granby, CT 06026

Phillip Sargenski - Quality Assurance Manager
Phone: 860-653-8376
Fax: 860-653-8301
Phillip.sargenski@marmoniei.com


* * * UPDATE ON 08/23/24 AT 1315 EDT FROM PHILLIP SARGENSKI TO JOSUE RAMIREZ * * *

The vendor provided the final report for this event listing corrective actions and the estimated completion dates.

Notified R1DO (Lilliendahl), R3DO (Skokowski), R4DO (Vossmar), and Part 21 group (Email).

AGREEMENT STATE REPORT - DAMAGED RADIOGRAPHY CAMERA

The following was received from the Pennsylvania Bureau of Radiation Protection (the Department) via email:

"On August 15, 2024, the licensee notified the Department of a disabled device. It is reportable per 10 CFR 34.101(a)(2) and 30.50(b)(2).

"On July 31, 2024, the licensee reported damage to a QSA 880D (serial number D14778, source serial number FC2203), camera containing 38 curies of Ir-192. The licensee was on site performing weld inspections for a client. After the second exposure, the source did not return to the shielded position. The technicians on site called the radiation safety officer (RSO) and established a restricted area around the source. They also notified the client to keep their personnel away from the area. The RSO arrived on site and was able to retrieve the source. The licensee staff determined that the technicians on site did not receive any overexposure. The RSO received 451 mR during the source retrieval. The badges have been sent to Landauer for verification. The equipment was taken out of service for repair."

PA Event Report Identification Number: PA240017

EN Revision Imported Date: 8/26/2024

EN Revision Text: AGREEMENT STATE REPORT - POSSIBLE DAMAGED PORTABLE GAUGE

The following information was provided by the Virginia Department of Health, Office of Radiologic Health (RMP) via email:

"At approximately 1100 EDT on 8/16/2024, RMP was notified of an incident involving a portable nuclear gauge. At approximately 0900, at a deep trench construction site in Fairfax, a CPN International gauge model MC-1, containing 10 mCi Cs-137 and 50 mCi Am-241, was dropped approximately 15 feet when a rope pulley system slipped. The authorized user notified the radiation safety officer (RSO) who arrived on site and then they notified the RMP.

"Per the RSO, the gauge fell onto dirt at the bottom of a trench. The device landed flat onto the base of the gauge. The gauge functions and is operational. The rod handle was retracted and locked at the time, and the source remained retracted in the shielded position. The RSO obtained survey readings of 0.4 mR/h at 1 meter from the gauge. The gauge was placed in its transportation box, secured in the back of a pickup truck, and transported back to the licensee's office for secure storage. A leak test was obtained and analysis indicates there is no leakage. The gauge will be sent for assessment by an authorized dealer.

"RMP will follow up with an investigation."

Event Report ID No.: VA240004

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

SHUTDOWN REQUIRED BY TECHNICAL SPECIFICATIONS

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

"At 0500 CDT on 8/23/24, Wolf Creek entered technical specification limiting condition for operation (LCO) 3.7.5 required action D.1 which requires shutdown to mode 3 within 6 hours. The turbine driven auxiliary feedwater pump discharge valve to the 'B' steam generator was not successfully restored to operable prior to expiration of the 72 hour completion time. At 0800 CDT, the shutdown to mode 3 was initiated, which is being reported in accordance with 10CFR50.72(b)(2)(i)."

The NRC Resident Inspector has been notified.

AUTOMATIC REACTOR TRIP

The following information was provided by the licensee via email:

"At 1219 EDT, with unit 1 in Mode 1 at 100 percent power, the reactor automatically tripped due to a turbine trip. The trip was not complex, with all systems responding normally post-trip.
"Operations responded and stabilized the plant. Decay heat is being removed by the auxiliary feedwater (AFW) and steam dump systems. Unit 2 is currently in a refueling outage (U2R26) and was not affected.
"Due to the reactor protection system actuation while critical, this event is being reported as a four-hour, non- emergency notification per 10 CFR 50.72(b)(2)(iv)(B) and an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(iv)(A) as an event that results in a valid actuation of the AFW system. The AFW system started automatically and is operating as designed.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."