| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
06/02/2016 - 06/03/2016 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 51955 | Facility: COMANCHE PEAK
Region: 4 State: TX
Unit: [1] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: ANTHONY PATE
HQ OPS Officer: JEFF HERRERA | Notification Date: 05/24/2016
Notification Time: 17:48 [ET]
Event Date: 05/24/2016
Event Time: 10:22 [CDT]
Last Update Date: 06/02/2016 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
GREG WERNER (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown | | 2 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text UNPLANNED LOSS OF EMERGENCY ASSESSMENT CAPABILITY
"CPNPP [Comanche Peak Nuclear Power Plant] experienced an unplanned loss of the seismic monitoring instrument on May 24, 2016 at 1022 [CDT]. The unplanned loss of the seismic monitor resulted in a loss of assessment capability for the HA1.1 (seismic event greater than operating basis earthquake) Alert emergency classification. The seismic monitor was restored to service on May 24, 2016 at 1043.
"This loss of assessment capability is reportable to the NRC within 8 hours of discovery in accordance with 10 CFR 50.72(b)(3)(xiii)."
The NRC Resident Inspector has been notified.
* * * UPDATE ON 6/2/16 AT 1630 EDT FROM ANTHONY PATE TO DONG PARK * * *
"On May 24, 2016 at 1748 [EDT], Comanche Peak reported an unplanned loss of emergency assessment capability per 10 CFR 50.72(b)(3)(xiii) [EN# 51955]. Specifically, Comanche Peak reported an unplanned loss of the seismic monitoring instrument. The unplanned loss of the seismic monitor would have resulted in a loss of assessment capability for the HA 1.1 (seismic event greater than operating basis earthquake) Alert emergency classification. The seismic monitor was restored to service on May 24, 2016 at 1043 [CDT].
"The engineering review determined that the alarms displayed on the seismic monitoring screen provides Operations awareness of the system status. Signals were still being received from the sensor and if there was an OBE [Operating Basis Earthquake] during the time the alarms were in, it would have displayed on the monitoring screen and on the Main Control Board by providing an OBE Exceedance alarm, maintaining emergency assessment capability. Therefore, Comanche Peak requests that the May 24, 2016, 10 CFR 50.72(b)(3)(xiii) reportable event for Units 1 & 2 be retracted."
The licensee will notify the NRC Resident Inspector.
Notified R4DO (Deese). |
| Agreement State | Event Number: 51957 | Rep Org: VIRGINIA RAD MATERIALS PROGRAM
Licensee: SUPERIOR PAVING CORPORATION
Region: 1
City: ASHBURN State: VA
County: LOUDON
License #: 059-421-1
Agreement: Y
Docket:
NRC Notified By: MIKE WELLING
HQ OPS Officer: VINCE KLCO | Notification Date: 05/25/2016
Notification Time: 15:55 [ET]
Event Date: 04/20/2012
Event Time: [EDT]
Last Update Date: 05/25/2016 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
JON LILLIENDAHL (R1DO)
NMSS_EVENTS_NOTIFICA (EMAI)
| Event Text AGREEMENT STATE REPORT - PORTABLE GAUGES DAMAGED BY FIRE
The following information was received from the Commonwealth of Virginia by email:
"Event description: On May 23, 2016 a Virginia Radioactive Material Program (VRMP) inspector performed a routine unannounced inspection of Superior Paving Corporation. The inspector discovered that on April 20, 2012, two Troxler Model 4640-B Portable Gauges (serial numbers 1384 and 845) containing 8 mCi of Cs-137 each, were damaged by fire. The fire burnt the storage box which contained the two gauges. The transport containers and plastics on the gauges were melted. However, according to the Radiation Safety Officer statement, the integrities of the sources were intact. On May 10, 2012 the two gauges were transported by the licensee to North East Technical Services (NETS) for disposal.
"A transfer record was available for review. The licensee will provide the agency (VRMP) a detailed report for review. There was no public health exposure or environmental release from this event."
Virginia Event Report: VA-16-005 |
| Agreement State | Event Number: 51960 | Rep Org: OK DEQ RAD MANAGEMENT
Licensee: ADVANCED INSPECTION TECHNOLOGIES
Region: 4
City: SAND SPRINGS State: OK
County:
License #: OK-27588-02
Agreement: Y
Docket:
NRC Notified By: KEVIN SAMPSON
HQ OPS Officer: VINCE KLCO | Notification Date: 05/25/2016
Notification Time: 19:26 [ET]
Event Date: 05/25/2016
Event Time: 11:18 [CDT]
Last Update Date: 05/25/2016 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
GREG WERNER (R4DO)
NMSS_EVENTS_NOTIFICA (EMAI)
| Event Text AGREEMENT STATE REPORT - RADIOGRAPHY TRUCK ACCIDENT
The following information was received from the State of Oklahoma by email:
"Approximately [1300 CDT] today, [Oklahoma was] notified by Advanced Inspection Technologies [AIT] (OK-27588-02) that a radiography truck belonging to them had been involved in a collision with a tractor/trailer truck at [1118 CDT] today at mile marker 178 on I-44 near Stroud, OK. The driver of the radiography truck was killed and the truck partially burned. At the time it was carrying a 30 Ci Ir-192 source and a 25 Ci Ir-192 source. The truck was taken to the Oklahoma Highway Patrol facility in Stroud where [Oklahoma personnel] arrived at about [1400 CDT]. The darkroom, where the cameras were stored (QSA Model 880s), was partially burned but had not been opened. Initial surveys of the exterior indicated the cameras, which were normally secured near the darkroom door, had been thrown forward and come to rest just behind the cab. Shortly after [Oklahoma personnel] arrived, the AIT RSO arrived and the darkroom door was forced open. The cameras were recovered and surveys indicated the shielding was intact. Wipe tests of each were also collected. One camera was damaged but the sources were secure inside each [camera]. The cameras have been returned to the AIT facility in Sand Springs, OK and will be returned to QSA for repair or disposal." |
| Agreement State | Event Number: 51961 | Rep Org: MISSISSIPPI DIV OF RAD HEALTH
Licensee: TRONOX, LLC
Region: 4
City: HAMILTON State: MS
County:
License #: MS-149-01
Agreement: Y
Docket:
NRC Notified By: BENJAMIN CULPEPPER
HQ OPS Officer: HOWIE CROUCH | Notification Date: 05/26/2016
Notification Time: 16:35 [ET]
Event Date: 05/17/2016
Event Time: [CDT]
Last Update Date: 05/26/2016 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
GREG WERNER (R4DO)
NMSS_EVENTS_NOTIFIC (EMAI)
| Event Text MISSISSIPPI AGREEMENT STATE REPORT - STUCK SHUTTER ON LEVEL GAUGE
The following information was obtained from the state of Mississippi via email:
"Licensee reported a stuck shutter on an Ohmart/VEGA Model SH-F1 level gauge, during semi-annual checks of shutter operation. The failure was identified on 05/17/2016 by the licensee and was immediately reported to RSO. The RSO supposes stuck shutter failure was caused by age and oxidation. Licensee has contacted the manufacturer, Ohmart, for repair of shutter mechanism. Gauge remains in its normal operating position.
"Isotope(s): Cs-137
Activity: 10 mCi
Source Serial No. 0441GK
Source Model No. A-2102"
Mississippi Report Number: MS-16003 |
| Part 21 | Event Number: 51972 | Rep Org: AMETEK SOLIDSTATE CONTROLS
Licensee: SIGNAL TRANSFORMER
Region: 3
City: COLUMBUS State: OH
County:
License #:
Agreement: Y
Docket:
NRC Notified By: ETHAN SALSBURY
HQ OPS Officer: DONG HWA PARK | Notification Date: 06/02/2016
Notification Time: 16:30 [ET]
Event Date: 06/02/2016
Event Time: [EDT]
Last Update Date: 06/02/2016 | Emergency Class: NON EMERGENCY
10 CFR Section:
21.21(d)(3)(i) - DEFECTS AND NONCOMPLIANCE
| Person (Organization):
DAN SCHROEDER (R1DO)
DAVID HILLS (R3DO)
PART 21/50.55 REACT (EMAI)
| Event Text PART 21 - NOT APPROVED CURRENT TRANSFORMERS INSTALLED IN SAFETY RELATED EQUIPMENT
The following was excerpted from the Ammeter Part 21 Report:
"Ametek inverter manufactured with Signal Transformer R-10607, Ametek part number 80-310879-90 was inadvertently installed in several units from an unapproved supplier. The potential for this situation to occur exists for new equipment delivered between July of 2015 and May of 2016. Affected utilities and equipment serial numbers are identified below.
"Dominion Nuclear Connecticut, Millstone
96000067-0411, 96000067-0511, 96000067-0611, 96000067-0711
"Krsko Nuclear Power Plant
96000068-0211, 96000068-0311, 96000068-0411
"Exelon, Byron Station
96000075-0311, 96000075-0411, 96000075-0511, 96000075-0611
"Ametek Solidstate Controls is submitting the following Report of a Potential Defect in accordance with the requirements of 10CFR Part 21.
"To replace the transformers, Ametek Solidstate Controls will work with you to arrange replacements. Please our Client Services group at 1-614-846-7500. mailto: eric.phillips@ametek.com"
The potential problems include:
- Mag wire terminated with improper lug and tooling which may cause loss of feedback to static transfer function.
- Spot welded band around the core which has not been adequately seismically evaluated.
- 180 degree Celsius insulation system provided instead of the approved 200 degree Celsius and unapproved materials used which impacts the aging analysis. | |