| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
6/26/2018 - 6/27/2018 ** EVENT NUMBERS ** |
| !!!!! THIS EVENT HAS BEEN RETRACTED.THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 53392 | Facility: FARLEY
Region: 2 State: AL
Unit: [1] [] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: BLAKE MITCHELL
HQ OPS Officer: STEVEN VITTO | Notification Date: 05/08/2018
Notification Time: 01:39 [ET]
Event Date: 05/07/2018
Event Time: 23:00 [CDT]
Last Update Date: 06/27/2018 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
| Person (Organization):
BINOY DESAI (R2DO) | | Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Hot Standby | 0 | Hot Standby | Event Text UNANALYZED CONDITION
"On May 7, 2018 at 1041 CDT, Unit 1 performed an RCS (reactor coolant system) leakrate procedure that calculated an unidentified RCS leakrate of 0.202 gpm. The leak source investigation concluded at 2150 that the packing for the charging flow control valve (FCV) was the source of the RCS leakage when it was bypassed, which isolated the leakage. A second RCS leakrate calculation was performed after the charging flow control valve was isolated which calculated an acceptable leakrate of 0.00 gpm.
"The packing leakage from the charging flow control valve represented leakage external to containment which would result in a greater that 5 Rem dose projection to control room personnel during accident conditions which does not satisfy the GDC19 criteria described in Technical Specification Bases 3.7.10. Therefore the control room emergency filtration system would not be able to fulfill its design function resulting in an unanalyzed condition.
"This condition is being reported pursuant to 10CFR50.72(b)(3)(ii) for a 'condition that results in the nuclear power plant being in an unanalyzed condition that significantly degrades plant safety'.
"The packing leak from the charging flow control valve will remain isolated until repaired under work order SNC944374."
The NRC Resident Inspector has been notified.
* * * RETRACTION FROM BLAKE MITCHELL TO ANDREW WAUGH AT 2151 EDT ON 6/27/2018 * * *
"Retraction - There was sufficient margin in the analysis of record to account for the increased leakage in the charging flow control valve that was not known at the time of reporting. Doses at the site boundary and in the Main Control Room would have remained less than the legal limits had a Loss of Coolant Accident occurred based on plant conditions at the time."
The licensee notified the NRC Resident Inspector.
Notified the R2DO (Michel). |
| !!!!! THIS EVENT HAS BEEN RETRACTED.THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 53393 | Facility: FARLEY
Region: 2 State: AL
Unit: [1] [] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: DOUGLAS HOBSON
HQ OPS Officer: DAN LIVERMORE | Notification Date: 05/08/2018
Notification Time: 10:38 [ET]
Event Date: 05/08/2018
Event Time: 01:39 [CDT]
Last Update Date: 06/27/2018 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(A) - DEGRADED CONDITION
| Person (Organization):
BINOY DESAI (R2DO) | | Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Hot Standby | 0 | Hot Standby | Event Text CONTAINMENT LEAK RATE GREATER THAN TECH SPEC
"On May 8, 2018 at 0139 Central Daylight Time, Farley Nuclear Plant Unit 1 declared containment inoperable due to total containment leak rate greater than technical specifications. The 1B containment cooler had seat leakage of approximately 30 gallons per minute from a service water drain valve.
"Though the containment cooler service water supply is not tested per the Appendix J program, a loss of the containment barrier is possible under accident conditions.
"The service water flow path to the 1B containment cooler has been isolated to exit the condition."
The licensee will notify the NRC resident inspector.
* * * RETRACTION FROM BLAKE MITCHELL TO ANDREW WAUGH AT 2151 EDT ON 6/27/18 * * *
"During the time of the leakage reported in event notification 53393 the system was under administrative control. The containment isolation valves for the 1B containment cooler were closed as restoration of the containment cooler was still in progress following the outage. With the system isolated, operations had identified a 50 drop per minute (dpm) leak downstream of a service water drain valve to the 1B containment cooler. To quantify the leak, operations removed the downstream pipe cap and piping to better measure the leak under system pressure. Upon opening the service water containment isolation valves the leak rate was measured at 30 gpm. Operations re-closed the service water containment isolation valves per the pre-briefed contingency actions. It was determined that the service water drain valve (a ball valve) was not properly seated. This was all performed with operations personnel on station in the containment and in the Main Control Room. At no time were the containment isolation valves degraded. Following closure of the containment isolation valves they were also powered down to prevent inadvertent opening."
The licensee notified the NRC Resident Inspector.
Notified R2DO (Michel). |
| Agreement State | Event Number: 53461 | Rep Org: NC DIV OF RADIATION PROTECTION
Licensee: MEMORIAL MISSION HOSPITAL
Region: 1
City: ASHEVILLE State: NC
County:
License #: 0091-6
Agreement: Y
Docket:
NRC Notified By: TRAVIS CARTOSKI
HQ OPS Officer: RICHARD SMITH | Notification Date: 06/19/2018
Notification Time: 16:00 [ET]
Event Date: 06/19/2018
Event Time: 00:00 [EDT]
Last Update Date: 06/19/2018 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
ART BURRITT (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL) | Event Text AGREEMENT STATE REPORT - REMOVABLE CONTAMINATION ON PACKAGE
The following information was received via E-mail:
"North Carolina Radioactive Material Branch (NCRMB) is reporting the following event:
"On 6/19/2018, Memorial Mission Hospital, Asheville (NC License, 0091-6) reported receiving two Biodex PET boxes containing F-18 FDG [fludeoxyglucose] from Cardinal Health, Asheville (NC License, 0794-7). Both boxes were delivered to Cardinal Health, Asheville via courier from Cardinal Health, Charlotte (NC License, 0794-1).
"Upon receipt of the boxes, Memorial Mission personnel performed surveys and wipes and noted the following contamination for Tc-99m on the boxes with the concentration of contamination being on the side handles of both boxes:
Box 1: 88.96 kdpm/300 cm2
Box 2: 46.92 kdpm/300 cm2
"No contamination was found inside either of the boxes containing F-18 patient doses and contamination was only on outside handles of both boxes. Memorial Mission confirmed that no further contaminated packages were received.
"Cardinal Health, Charlotte performed wipes and surveys of its work areas, courier vehicle and personnel. No contamination was found at this location with regards to this event.
"Cardinal Health, Asheville performed wipes and surveys of its work areas, courier vehicle and personnel. The courier at this location that delivered the two boxes to Memorial Mission Hospital is also a Pharmacy Technician. Removable contamination was found on this person's hands and cleaned. No other contamination was discovered at this location or the courier vehicle.
"No other notifications were made to any other agencies in NC. NCRMB was notified same day as the event. There are no other generic implications.
"NCRMB has dispatched an inspector to perform an on-site investigation. This report will be updated once more information is discovered, to include corrective actions and any other info needed to close and complete this report.
"Reporting Requirement: 10 CFR 20.1906(d)(1): Reports of removable contamination on package > limits in 10 CFR 71.87; removable contamination greater than limits specified in 49 CFR 173.443."
NC Tracking Event Number: 180028. |
| Power Reactor | Event Number: 53472 | Facility: COMANCHE PEAK
Region: 4 State: TX
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: TIM BENNETT
HQ OPS Officer: HOWIE CROUCH | Notification Date: 06/26/2018
Notification Time: 04:26 [ET]
Event Date: 06/26/2018
Event Time: 00:03 [CDT]
Last Update Date: 06/26/2018 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
RYAN ALEXANDER (R4DO) | | Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text MAIN STEAM LINE RADIATION MONITOR DETERMINED TO BE NON-FUNCTIONAL
"At time 0003 [CDT], Main Steamline Radiation Monitor 2-RE-2326 (Main Steam line 2-02) reading spiked and [was] declared non-functional.
"With this radiation monitor non-functional, all of the emergency action levels for a steam generator tube rupture in steam generator 2-02 could neither be evaluated nor monitored. This unplanned condition is reportable as a loss of assessment capability per 10CFR50.72(b)(3)(xiii).
"Comanche Peak Nuclear Power Plant (CPNPP) has assurance of steam generator integrity and fuel cladding integrity and there is negligible safety significance to the current condition [with respect to the] public health and safety perspective.
"Additionally, compensatory measures are in place to assure adequate monitoring capability is available to implement the CPNPP emergency plan in the unlikely event of challenges to the steam generator or fuel cladding. The N16 radiation monitor serves as a backup with alarm function and Radiation Protection technicians have been briefed on taking local readings with a Geiger-Mueller tube on MSL 2-02.
"Corrective actions are being pursued to restore 2-RE-2326 to functional status.
"The NRC Resident Inspector has been notified." |
| !!!!! THIS EVENT HAS BEEN RETRACTED.THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 53476 | Facility: COOPER
Region: 4 State: NE
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: RANDY KOUBA
HQ OPS Officer: ANDREW WAUGH | Notification Date: 06/26/2018
Notification Time: 23:29 [ET]
Event Date: 06/26/2018
Event Time: 16:30 [CDT]
Last Update Date: 08/13/2018 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
| Person (Organization):
RYAN ALEXANDER (R4DO) | | Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text CONTROL ROOM EMERGENCY FILTRATION SYSTEM DECLARED INOPERABLE
"On June 26, 2018, at 1630 CDT, the Control Room Emergency Filtration System (CREFS) was declared inoperable when Main Control Room Supply Fan SF-C-1B was discovered to have elevated vibrations that brought into question the ability to meet its mission time.
"CREFS is a single train safety system. Per 10 CFR 50.72(b)(3)(v)(D), an 8 hour report is required due to the fact that at the time of discovery this condition could have prevented the fulfillment of a safety function of an SSC [System Structure or Component] that is required to mitigate the consequences of an accident.
"The licensee has notified the NRC Senior Resident Inspector."
* * * RETRACTION FROM THOMAS FORLAND TO VINCE KLCO ON 8/13/18 AT 1024 EDT * * *
The following retraction was received from Cooper Nuclear Station (CNS) via facsimile and phone call:
"CNS is retracting the 8-hour non-emergency notification made on June 26, 2018 at 1630 CDT (EN# 53476). Subsequent evaluation concluded that overall vibration levels were not at a level that would impact the ability of the Main Control Room Supply Fan SF-C-18 to perform its safety function for its required mission time and the CREFS therefore, was operable.
"The NRC Senior Resident Inspector has been notified."
Notified the R4DO (Deese). | |