Event Notification Report for July 23, 2024

EN Revision Imported Date: 11/14/2025

EN Revision Text: PART 21 REPORT - NON-COMPLAINT 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:
RSCC 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).

* * * UPDATE ON 09/04/24 AT 1044 EDT FROM PHILLIP SARGENSKI TO NESTOR MAKRIS * * *

The vendor notified the NRC that they plan to send additional finding data regarding this notification via fax and/or email within the next day or two.
Notified R1DO (Ferdas), R3DO (Hills), R4DO (Drake), and Part 21 group (Email).

* * * UPDATE ON 09/06/24 AT 1327 EDT FROM PHILLIP SARGENSKI TO ADAM KOZIOL * * *

The vendor identified an additional non-compliant shipment of insulated conductor.
Affected plant: Calvert Cliffs
Notified R1DO (Ferdas), R3DO (Hills), R4DO (Drake), and Part 21 group (Email).

* * * UPDATE ON 9/17/24 AT 1641 EDT FROM PHILLIP SARGENSKI TO ROBERT THOMPSON * * *

The vendor identified an additional non-compliant shipment of insulated conductor.
Affected customer: Curtiss-Wright Nuclear Division.
Notified R1DO (Werkheiser), R3DO (Ziolkowski), R4DO (Azua), and Part 21 group (Email).

* * * UPDATE ON 9/26/24 AT 1030 EDT FROM PHILLIP SARGENSKI TO ADAM KOZIOL * * *

The vendor is continuing to conduct inventory sampling which involves a 14 day aging test. Due to the length of testing, the vendor plans on submitting their final report the week of October 7, 2024.
Notified R1DO (Dimitriadis), R3DO (Havertape), R4DO (Young), and Part 21 group (Email).

* * * UPDATE ON 10/28/24 AT 1121 EDT FROM PHILLIP SARGENSKI TO BRIAN P. SMITH * * *

The vendor has decided to expand the scope and breadth of the review to ensure they have identified and corrected for the full extent of the matter. Additional time is needed to complete this review.
Notified R1DO (Eve), R3DO (Edwards), R4DO (Warnick), and Part 21 group (Email).

* * * UPDATE ON 02/13/25 AT 1125 EDT FROM CAROL GROSSO TO IAN HOWARD * * *

The vendor has decided to expand the scope and breadth of the review to ensure they have identified and corrected for the full extent of the matter. RSCC is reviewing shipments from the past 18 months to ensure it has accounted for all non-conforming products. Additional cables related to this scope have been identified and impacted customers have been notified.

***UPDATE ON 03/28/2025 AT 1039 EDT FROM CAROL GROSSO TO RODNEY CLAGG***

The vendor has identified cable(s) that could be affected and have advised customers of the issue and requested that samples be returned to the vendor facility for further verification testing, which is a process that remains ongoing. This testing will confirm the cable's safety related function. Once the testing is complete, the vendor will notify the NRC with an updated and final Part 21 report.

Notified R1DO (Arner), R3DO (Gilliam), R4DO (Deese), and Part 21 group (Email).

* * * UPDATE ON 05/06/2025 AT 0935 EDT FROM CAROL GROSSO TO JOSUE RAMIREZ * * *

The vendor provided an update on their ongoing evaluation. The vendor continues to receive product from their customers and perform their evaluations. The process is still ongoing.

Notified R1DO (Eve), R3DO (Ruiz), R4DO (Dodson), and Part 21 group (Email).

***UPDATE ON 06/03/2025 AT 1605 EDT FROM CAROL GROSSO TO ERNEST WEST***

The vendor provided an update on their ongoing evaluation. The vendor continues to receive product from their customers and is performing evaluations. Test results for completed testing have been forwarded to customers. The process is still ongoing.

Notified R1DO (Dimitriadis), R3DO (Orlikowski), R4DO (Dodson), and Part 21 group (Email).

* * * UPDATE ON 07/02/2025 AT 1634 EDT FROM CAROL GROSSO TO TENISHA MEADOWS * * *

The vendor provided an update on their ongoing evaluation. The vendor continues to receive product from their customers to perform evaluations. Test results for completed testing have been forwarded to customers. The process is still ongoing.

Notified R1DO (Carfang), R3DO (Havertape), R4DO (Warnick), and Part 21 group (Email).


* * * UPDATE ON 09/09/2025 AT 1637 EDT FROM CAROL GROSSO TO JOSUE RAMIREZ * * *

The vendor provided an update on their ongoing evaluation. The vendor continues to receive product from their customers to perform testing and evaluations. Test results for completed testing have been forwarded to customers. The process is still ongoing.

Notified R1DO (Ford), R3DO (Sanchez Santiago), R4DO (Deese), and Part 21 group (Email).

* * * UPDATE ON 10/01/2025 AT 1815 EDT FROM CAROL GROSSO TO JORDAN WINGATE* * *

The vendor provided an update on their ongoing evaluation. The vendor continues to work with customers requesting product be returned for evaluation testing. Test results for completed testing have been forwarded to customers. The process is still ongoing.

Notified R1DO (Warnek), R3DO (Ziolkowski), R4DO (Vossmar), and Part 21 group (Email).

* * * UPDATE ON 11/13/2025 AT 1228 EST FROM CAROL GROSSO TO ROBERT THOMPSON * * *

The vendor provided an update on their ongoing evaluation. The vendor continues to receive product from their customers to perform testing and evaluations. Test results for completed testing have been forwarded to customers. The process is still ongoing.

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

EN Revision Imported Date: 8/23/2024

EN Revision Text: PART 21 - HPCI RUPTURE DISC NOT WITHIN TECHNICAL REQUIREMENTS

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

"Tennessee Valley Authority (TVA) completed an engineering evaluation for a Fike Metal Products 16-inch rupture disc, part number 16-CPV-C, which had failed in March 2024 during an event previously reported to the NRC as Event Notification 57036 and Licensee Event Report 260/2024-002-00.

"The evaluation determined that the failure of the rupture disc constituted a failure to comply by a basic component which resulted in a substantial safety hazard.

"The rupture disc was procured as a non-safety related item from Fike Corporation and commercially dedicated by Paragon Energy Solutions. The disc was supplied to TVA in a satisfactory condition meeting all acceptance criteria. During a routine flowrate surveillance test, the high-pressure coolant injection (HPCI) inner rupture disc developed a hole which caused the Unit 2 HPCI turbine to trip. This resulted in [Browns Ferry Unit 2] entering Technical Specification (TS) Limiting Condition for Operation (LCO) 3.5.1 Condition `C', which is a 14-day shutdown LCO. Per HPCI system design criteria, turbine casing protection disc rupture pressure shall be at 175 psig plus 1 or minus 10 psig and the rupture discs shall be sized for a flow capacity of 600,000 pounds per hour at 200 psig, minimum. The failed HPCI inner rupture disc did not experience pressures above 45 psig since being installed; therefore, the HPCI turbine inner rupture disc did not meet its technical requirements.

"On July 23, 2024, the Browns Ferry Nuclear Plant Site Vice President was notified of the requirement to report this event under 10 CFR 21.21. This is a non-emergency notification required by 10 CFR 21.21(d)(3)(i). A written notification in accordance with 10 CFR 21.21(d)(3)(ii) will be provided within 30 days."

The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:

Both Fike Corporation and Paragon Energy Solutions have been informed of the HPCI inner rupture disc not meeting technical requirements. Known potentially affected plants include Browns Ferry Units 1, 2, and 3.

* * * RETRACTION ON 08/22/24 AT 1522 EDT FROM CHASE HENSLEY TO JOSUE RAMIREZ * * *

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

"The purpose of this notification is to retract a previous event notification, EN 57245, reported on 7/25/24.
"Continued evaluation has concluded that the failure of the disc was not the result of a failure to comply by a basic component, therefore, the NRC non-emergency 10 CFR 21.21 (d) report was not required and the NRC EN 57245 can be retracted.
"The licensee has notified the NRC Resident Inspector."

Notified R2DO (Masters) and Part 21/50.55 Reactors group (Email).

AGREEMENT STATE REPORT - FIRE IN EQUIPMENT CONTAINING RADIOACTIVE MATERIAL

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

"This event is considered [an] equipment fire. The licensee had a vent hood equipment electrical fire. The fire occurred at 0630 [CDT] on July 23, 2024. The event was not reported until 1445 on July 23, 2024.

"The vent contained radioactive material waste. The majority of the waste was radioactive iodine. This event is under investigation and [LA DEQ] will have an inspector sent out.

"According to the licensee, there was no release. All material in the vent hood remained intact.

"The local fire department was called out to the location to put out the fire."

LA DEQ Event Report Number: LA20240008