ENS Event | |
|---|---|
08:00 Dec 19, 2018 | |
| Title | Spent Fuel Transfer Vehicle Outside Seismic Analysis Limits |
| Event Description | As part of the reviews following the August 3rd 2018 canister downloading event (EN#53605), SCE has identified events where the HI-PORT may have been operated outside the analytical assumptions of the seismic analysis while transporting a loaded canister in the HI-TRAC. SCE has decided to conservatively report this issue.
The HI-PORT is subject to requirements in the Certificate of Compliance that result in seismic restrictions on center of gravity and proximity to structures that could adversely affect the function of the HI-PORT along the haul route. SCE has concluded that during previous movements of loaded spent fuel canisters during 2018, the HI-PORT likely exceeded these procedural and analytical limits in some cases. Additional analysis is underway that may conclude that damage to the HI-PORT would not occur under these conditions. Nevertheless, this situation is being reported in accordance with 10CFR72.75(d)(1) for an important to safety component that was disabled or failed to function. There was no seismic event that resulted in damage to the HI-PORT during the fuel transfer campaign. All 29 spent fuel canisters are currently in safe storage within the ISFSI. NRC Region IV will be notified as SONGS does not have a NRC Resident Inspector. |
| Where | |
|---|---|
| Southern California Edison Company San Clemente, California (NRC Region 4) | |
| License number: | GL |
| Organization: | San Onofre |
| Reporting | |
| 10 CFR 72.75(d)(1), ISFSI Safety System Functional Failure | |
| Time - Person (Reporting Time:+29.93 h1.247 days <br />0.178 weeks <br />0.041 months <br />) | |
| Opened: | Tim Cusick 13:56 Dec 20, 2018 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Dec 20, 2018 |
| 53798 - NRC Website | |
Southern California Edison Company with 10 CFR 72.75(d)(1), ISFSI Safety System Functional Failure | |
WEEKMONTHYEARENS 538582019-02-01T22:05:0001 February 2019 22:05:00
[Table view]10 CFR 72.75(d)(1), ISFSI Safety System Functional Failure En Revision Imported Date 4/3/2019 ENS 537982018-12-19T08:00:00019 December 2018 08:00:00 10 CFR 72.75(d)(1), ISFSI Safety System Functional Failure Spent Fuel Transfer Vehicle Outside Seismic Analysis Limits ENS 536052018-08-03T08:00:0003 August 2018 08:00:00 10 CFR 72.75(d)(1), ISFSI Safety System Functional Failure Spent Fuel Canister Became Bound During Download Into Dry Storage 2019-02-01T22:05:00 | |