Event Notification Report for December 21, 2023
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/20/2023 - 12/21/2023
EVENT NUMBERS
56905
56905
Part 21
Event Number: 56905
Rep Org: VC Summer
Licensee: VC Summer
Region: 2
City: Jenkinsville State: SC
County: Fairfield
License #:
Agreement: Y
Docket:
NRC Notified By: Justin Bouknight
HQ OPS Officer: Brian P. Smith
Licensee: VC Summer
Region: 2
City: Jenkinsville State: SC
County: Fairfield
License #:
Agreement: Y
Docket:
NRC Notified By: Justin Bouknight
HQ OPS Officer: Brian P. Smith
Notification Date: 12/21/2023
Notification Time: 12:29 [ET]
Event Date: 12/21/2023
Event Time: 11:23 [EST]
Last Update Date: 12/21/2023
Notification Time: 12:29 [ET]
Event Date: 12/21/2023
Event Time: 11:23 [EST]
Last Update Date: 12/21/2023
Emergency Class: Non Emergency
10 CFR Section:
21.21(d)(3)(i) - Defects And Noncompliance
10 CFR Section:
21.21(d)(3)(i) - Defects And Noncompliance
Person (Organization):
Miller, Mark (R2DO)
Part 21/50.55 Reactors, - (EMAIL)
Miller, Mark (R2DO)
Part 21/50.55 Reactors, - (EMAIL)
PART 21 - FUEL OIL PIPING DEFECT
The following summary was provided by the licensee via phone and email:
On December 21, 2023, VC Summer determined that the original equipment manufacturer of its Emergency Diesel Generator (EDG) did not provide adequate documentation for an exception to ASME Code, Section III, Class 3 for the on-skid EDG fuel oil system. Specifically, the on-skid fuel oil threaded piping design used a code-allowed exception without providing adequate evaluation documentation supporting threaded Schedule 40 piping. On November 2, 2022, the 'A' EDG fuel oil piping failed during routine testing, requiring it to be declared inoperable until repairs were implemented.
The NRC Senior Resident Inspector has been notified.
Corrective actions: VC Summer has compensatory measures in place and is scheduled to implement a modification during the first quarter of 2024.
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
In addition to VC Summer, it was discussed via phone that Farley has a similar design for its on-skid EDG fuel oil system and potentially might be affected by this Part 21 report. No other sites have been discussed at this time.
The EDG manufacturer is: Fairbanks-Morse Corp. EDG Model: Colt-Pielstick 12-Cylinder PC-2.2
VC Summer POC for additional information: Justin Bouknight, Licensing Engineer, (803) 941-9828, justin.bouknight@dominionenergy.com.
The following summary was provided by the licensee via phone and email:
On December 21, 2023, VC Summer determined that the original equipment manufacturer of its Emergency Diesel Generator (EDG) did not provide adequate documentation for an exception to ASME Code, Section III, Class 3 for the on-skid EDG fuel oil system. Specifically, the on-skid fuel oil threaded piping design used a code-allowed exception without providing adequate evaluation documentation supporting threaded Schedule 40 piping. On November 2, 2022, the 'A' EDG fuel oil piping failed during routine testing, requiring it to be declared inoperable until repairs were implemented.
The NRC Senior Resident Inspector has been notified.
Corrective actions: VC Summer has compensatory measures in place and is scheduled to implement a modification during the first quarter of 2024.
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
In addition to VC Summer, it was discussed via phone that Farley has a similar design for its on-skid EDG fuel oil system and potentially might be affected by this Part 21 report. No other sites have been discussed at this time.
The EDG manufacturer is: Fairbanks-Morse Corp. EDG Model: Colt-Pielstick 12-Cylinder PC-2.2
VC Summer POC for additional information: Justin Bouknight, Licensing Engineer, (803) 941-9828, justin.bouknight@dominionenergy.com.