ENS 53798

v t e 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.

ENS 53798 +/-
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
v • d • e

v t e Emergency Notification System
Southern California Edison Company with 10 CFR 72.75(d)(1), ISFSI Safety System Functional Failure
WEEKMONTHYEAR2019-02-01T22:05:00 [Table view]
[ENS list for Southern California Edison Company]

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