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Event Notification Report for July 23, 2019

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
07/22/2019 - 07/23/2019

EVENT NUMBERS
54179

Power Reactor
Event Number: 54179
Facility: SAN ONOFRE
Region: 4     State: CA
Unit: [] [2] [3]
RX Type: [1] W-3-LP,[2] CE,[3] CE
NRC Notified By: RUSSELL BREEDLOVE
HQ OPS Officer: ANDREW WAUGH
Notification Date: 07/23/2019
Notification Time: 19:50 [ET]
Event Date: 07/23/2019
Event Time: 14:05 [PDT]
Last Update Date: 07/23/2019
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
NICK TAYLOR (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Power Reactor Unit Info
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
2 N N 0 Defueled 0 Defueled
3 N N 0 Defueled 0 Defueled
Event Text
OFFSITE NOTIFICATION

"On 7/23/2019 at 1405 PDT, San Onofre Nuclear Generating Station (SONGS) made a required formal notification to the Regional Water Quality Control Board for the state of California concerning a monthly oil sample of the oil removal system. The sample was analyzed to contain 42 ppm oil. This number exceeds the daily instantaneous maximum of 20 ppm.

"An additional sample was taken approximately one minute later and was analyzed to contain 8.1 ppm oil, potentially indicating a problem with the initial sample. Additional investigation is underway and a written follow-up report will be submitted to the Regional Water Quality Control Board within 5 days in accordance with the National Pollutant Discharge Elimination System permit."

The licensee will inform NRC Region IV staff.