ML22346A070

GNF-A Written Follow-up Report - Fire System Impairment

ML22346A070
Person / Time
Site:	07001113
Issue date:	12/12/2022
From:	Ollis P Global Nuclear Fuel - Americas
To:	Office of Nuclear Material Safety and Safeguards, Document Control Desk
References
56159, M220161
Download: ML22346A070 (1)

Text

Global Nuclear Fuel Phillip D. Ollis Facility Licensing 3901 Castle Hayne Road P.O. Box 780 Wilmington, NC 28402 M220161 USA T (910) 616-4018 December 12, 2022 Phillip.ollis@ge.com U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001

Subject:

GNF-A Written Follow-up Report - Fire System Impairment

References:

1) NRC License SNM-1097, Docket 70-1113

2) GNF-A Event N otification 56159, 10/13/2022

Dear Sir or Madam:

In accordance with 10 CFR 70.74(b), Global Nuclear Fuel-Americas, LLC (GNF-A) hereby submits a written follow-up report for Event Notification 56159 that was provided to NRC on October 13, 2022 (Reference 2).

Event 56159 As discussed in the initial event report, GNF-A reported an unplanned fire system impairment to the New Hanover County (NHC) Deputy Fire Marshall. Consistent with 10 CFR 70, Appendix A(c), a concurrent report was provided to NRC and is included as Attachment 1 to this letter.

Additional information is provided as follows:

Event Details and Safety Significance At approximately 1311 (EDT) on October 12th, 2022, the New Hanover County Deputy Fire Marshall was notified per State code requirements that the fire suppression system encompassing the Fuel Manufacturing Operation (FMO) was impaired. During a flow test, the backup diesel fire pump experienced an overheating condition.

Immediate Corrective Actions Taken The diesel fire pump was placed in the manual "Off" position. The electric fire pump was verified to be fully operational and available to perform its safety function. A repair vendor was contacted to restore operation.

Probable Cause of Event A failed pressure regulator was determined to be the cause of the issue.

US NRC M220161 December 12, 2022 Page 2 Short Term Corrective Actions The pressure regulator was replaced and the diesel pump was returned to service at approximately 1000 on October 13th. The Fire Marshall was notified of restoration at 1020.

Longer Term Corrective Action None - The failure was detected during a routine test as intended.

If you have any questions regarding this matter, please contact me at (910) 616-4018.

Sincerely, Phillip D. Ollis Facility Licensing Attachments: 1) Event Description cc: NRC Region II Administrator, Atlanta, GA J. Rivera, NRC RII Atlanta. GA L. Cooke, NRC RII Atlanta. GA J. Rowley, NRC NMSS, Washington, DC PDO 22-008

US NRC M220161 December 12, 2022 Page 3 Attachment 1 Event Description At approximately 1311 (EDT) on October 12th, 2022, the New Hanover County Deputy Fire Marshall was notified per State code requirements that the fire suppression system encompassing the Fuel Manufacturing Operation (FMO) was impaired. During a flow test, the backup diesel fire pump experienced an overheating condition. As a result, the diesel fire pump was placed in the manual "Off" position. The electric fire pump remained fully operational and available to perform its safety function. The diesel pump was repaired and returned to operation at approximately 1000 (EDT) on Thursday, October 13th. The New Hanover County Deputy Fire Marshall was notified of restoration at 1020 (EDT). Because the New Hanover County Deputy Fire Marshall was notified, a concurrent notification to the NRC Operations Center is being made per 10 CFR 70, Appendix A(c).

Phillip Ollis, Facility Licensing 1039 10/13/2022