ML18331A365
| ML18331A365 | |
| Person / Time | |
|---|---|
| Site: | 07001113 |
| Issue date: | 11/27/2018 |
| From: | Murray S Global Nuclear Fuel |
| To: | Document Control Desk, Office of Nuclear Material Safety and Safeguards |
| References | |
| 53637, M180212 | |
| Download: ML18331A365 (3) | |
Text
M180212 November 27, 2018 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 Report 53637, 10/2/2018
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 53637 that was provided to NRC on October 2, 2018 (Reference 2). As discussed in the initial event report, GNF-A reported a 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 an attachment to this letter.
Additional information is provided as follows:
Event Details and Safety Significance At approximately 1525 EDT on October 1, 2018, Fire Riser 318 which serves both non-contaminated and contaminated areas in the Fuel Manufacturing Operation (FMO) building, was taken out of service for an emergency repair of a pin hole leak in the pipe. The failure mode was identified and evaluated in the Integrated Safety Analysis (ISA) and there was no degradation of an item relied on for safety (IROFS) or failure to meet performance requirements.
Immediate Corrective Actions Taken Water was contained, and surveys were completed to ensure no contamination was released into non-contaminated areas. The NHC Deputy Fire Marshall was notified at 1655 EDT on October 1, 2018 per State code requirements. An hourly fire watch was implemented for surveillance of the affected areas. Because the NHC Deputy Fire Marshall was notified, a concurrent notification to the NRC Operations Center was made per 10 CFR 70, Appendix A(c).
Probable Cause of Event Fire Riser 318 piping suffered a small failure (pin hole leak) due to age.
Global Nuclear Fuel Scott P. Murray Manager, Facility Licensing 3901 Castle Hayne Road P.O. Box 780 Wilmington, NC 28402 USA T (910) 819-5950 Scott.murray@ge.com
US NRC M180212 November 27, 2018 Page2 Short Term Corrective Actions
- 1) Fire Riser 318 was removed from service and a fire watch was established.
Completed: October 1, 2018
- 2) Water that had leaked from the pipe was removed and the area was surveyed to ensure no contamination was released into non-contaminated areas.
Completed: October 1, 2018 Longer Term Corrective Action
- 1) The leaking sprinkler pipe fitting was replaced, and the system was restored to service at approximately 1100 EDT on October 4, 2018. The NHC Deputy Fire Marshal was also notified via telephone of the return to service at 1150 EDT on October 4, 2018.
If you have any questions regarding this matter, please contact me at (91 0) 819-5950.
Sincerely, S~u~Mati7 Facility Licensing
Attachment:
Event Notification Description cc: NRC Region II Administrator, Atlanta, GA T. Vukovinsky, NRC Rll Atlanta. GA T. Naquin, NRC NMSS, Washington, DC SPM 18-055
US NRC M180212 November 27, 2018 Page 3 Event Notification Description At approximately 15:25 on October 1st, 2018, Fire Riser 318 which serves both non-contaminated and contaminated areas in FMO, was taken out of service due to a pin hole leak in the pipe. Water was contained, and surveys were completed to ensure no contamination was released into non-contaminated areas. The New Hanover County Deputy Fire Marshall was notified at 16:55 PM on October 1st, 2018, per State code requirements. An hourly fire watch was implemented for surveillance of the affected areas. 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)
Scott Murray, Manager, Facility Licensing 1438 10/2/2018 UPDATE 10/04/2018 The leaking sprinkler pipe fitting was replaced this morning and the system was restored to service at approximately 11 AM, 10/4/18. The NHC Deputy Fire Marshal was notified via telephone of the return to service at 11:50 AM, 10/4/18.
Phillip Ollis Facility Licensing 1335 10/4/2018