Event Notification Report for January 18, 2021
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/17/2021 - 01/18/2021
EVENT NUMBERS
55071
55071
Power Reactor
Event Number: 55071
Facility: Pilgrim
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: Michael McDonough
HQ OPS Officer: Howie Crouch
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: Michael McDonough
HQ OPS Officer: Howie Crouch
Notification Date: 01/18/2021
Notification Time: 17:31 [ET]
Event Date: 01/18/2021
Event Time: 16:00 [EST]
Last Update Date: 01/18/2021
Notification Time: 17:31 [ET]
Event Date: 01/18/2021
Event Time: 16:00 [EST]
Last Update Date: 01/18/2021
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
Person (Organization):
LILLIENDAHL, JON (R1)
LILLIENDAHL, JON (R1)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Defueled | 0 | Defueled |
EN Revision Imported Date: 2/7/2021
EN Revision Text: OFFSITE NOTIFICATION DUE TO LEAK FROM UNDERGROUND SEWAGE STORAGE TANK
"On January 18, 2021 at 1600 hours (EDT), Holtec Decommissioning International (HDI) made an off-site notification to the Environmental Protection Agency's Enforcement and Compliance Assurance Division in accordance with Section B of the station's National Pollutant Discharge Elimination System (NPDES) Permit No. 0003557. The event was associated with an underground sewage water system holding tank. The specific details of the occurrence are as follows:
"On January 13, 2021 at 1000 hours [EDT] site personnel identified what appeared to be water bubbling up from an unidentified cover within the security protected area of the site. The water emanating from the cap had no visible color or solid material and no odor. The water estimated at 25 gallons per hour or less was flowing to a site storm drain connected to permitted outfall number 007. Initial indication was that the water was potable water as part of the station's fire protection system. Further investigation determined that a back-up in an underground sewage holding tank inlet was the source of the leakage. By 1400 hours [EDT] when bathrooms including toilets on site were shutdown and removed from service, efforts were underway to pump the tank and remove the blockage, and the bubbling from the cover had stopped."
The licensee has notified the Massachusetts Environmental Protection Agency, the Massachusetts Emergency Management Agency and the NRC Resident Inspector.
EN Revision Text: OFFSITE NOTIFICATION DUE TO LEAK FROM UNDERGROUND SEWAGE STORAGE TANK
"On January 18, 2021 at 1600 hours (EDT), Holtec Decommissioning International (HDI) made an off-site notification to the Environmental Protection Agency's Enforcement and Compliance Assurance Division in accordance with Section B of the station's National Pollutant Discharge Elimination System (NPDES) Permit No. 0003557. The event was associated with an underground sewage water system holding tank. The specific details of the occurrence are as follows:
"On January 13, 2021 at 1000 hours [EDT] site personnel identified what appeared to be water bubbling up from an unidentified cover within the security protected area of the site. The water emanating from the cap had no visible color or solid material and no odor. The water estimated at 25 gallons per hour or less was flowing to a site storm drain connected to permitted outfall number 007. Initial indication was that the water was potable water as part of the station's fire protection system. Further investigation determined that a back-up in an underground sewage holding tank inlet was the source of the leakage. By 1400 hours [EDT] when bathrooms including toilets on site were shutdown and removed from service, efforts were underway to pump the tank and remove the blockage, and the bubbling from the cover had stopped."
The licensee has notified the Massachusetts Environmental Protection Agency, the Massachusetts Emergency Management Agency and the NRC Resident Inspector.