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Event Notification Report for May 06, 2020

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
5/5/2020 - 5/6/2020

** EVENT NUMBERS **


54682 54683 54697

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Agreement State Event Number: 54682
Rep Org: VIRGINIA RAD MATERIALS PROGRAM
Licensee: DUPONT SPECIALTY PRODUCTS USA, LLC
Region: 1
City: RICHMOND   State: VA
County:
License #: 041-313-1
Agreement: Y
Docket:
NRC Notified By: ASFAW FENTA
HQ OPS Officer: JEFFREY WHITED
Notification Date: 04/27/2020
Notification Time: 09:50 [ET]
Event Date: 04/24/2020
Event Time: 00:00 [EDT]
Last Update Date: 04/27/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
DAN SCHROEDER (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)

Event Text

AGREEMENT STATE REPORT - FIXED GAUGE SHUTTER TEST FAILURE

The following was received from the Commonwealth of Virginia via email:

"On April 24, 2020, a licensee reported that the shutter of a fixed gauge used to measure the level of material inside a process vessel was stuck in the open position. This incident was identified on April 24, 2020, during the biennial leak testing of the source. The gauge is a Ronan Engineering Company, device (Model SA-1, serial number SO-VA-7063), and Source (Model SA1-F37, serial number M7451), containing 40 mCi of Cs-137. The report indicated that the impacted site personnel were notified immediately and barriers were erected to prevent access to the gauge area. Based on the report, there was no public exposure or environmental release from this event. The licensee has contacted the manufacturer (Ronan Engineering Company) for further investigation and to fix the problem.

"The Virginia Office of Radiological Health will review the licensee's written report and determine if additional actions are needed to be taken."

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Agreement State Event Number: 54683
Rep Org: TENNESSEE DIV OF RAD HEALTH
Licensee: SERVICE KING COLLISION REPAIR
Region: 1
City: MT. JULIET   State: TN
County:
License #: GL1192/GL1193
Agreement: Y
Docket:
NRC Notified By: ANDREW HOLCOMB
HQ OPS Officer: HOWIE CROUCH
Notification Date: 04/28/2020
Notification Time: 14:49 [ET]
Event Date: 02/24/2020
Event Time: 00:00 [EDT]
Last Update Date: 04/28/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
DAN SCHROEDER (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
LAURA PEARSON (ILTAB)
This material event contains a "Less than Cat 3" level of radioactive material.

Event Text

AGREEMENT STATE REPORT - LOST STATIC ELIMINATORS CONTAINING POLONIUM-210

The following information was obtained from the state of Tennessee via email:

"During a recent inventory at two different locations of Service King Collision Repair Centers, two static elimination devices were found to be missing. One location in Chattanooga, TN, lost the device during the transition of closing the repair center. Updated information will be included in a follow-up report. The information for the devices is below:

Manufacturer Model Serial# Isotope Activity
NRD, LLC P-2021 A2LV457 Po-210 10 mCi
NRD, LLC P-2021 A2LU553 Po-210 10 mCi"

Tennessee Event Report ID No.: TN-20-076


THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

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Power Reactor Event Number: 54697
Facility: BROWNS FERRY
Region: 2     State: AL
Unit: [] [2] []
RX Type: [1] GE-4,[2] GE-4,[3] GE-4
NRC Notified By: ALLEN BUCKNER
HQ OPS Officer: BETHANY CECERE
Notification Date: 05/06/2020
Notification Time: 14:11 [ET]
Event Date: 03/08/2020
Event Time: 20:21 [CDT]
Last Update Date: 05/06/2020
Emergency Class: Non Emergency
10 CFR Section:
50.73(a)(1) - Invalid Specif System Actuation
Person (Organization):
MARK MILLER (R2DO)
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

INVALID ACTUATION OF A GENERAL CONTAINMENT ISOLATION SIGNAL AFFECTING MORE THAN ONE SYSTEM

"This 60-day telephone notification is being made per the reporting requirements specified by 10 CFR 50.73(a)(2)(iv)(A) and 10 CFR 50.73(a)(1) to describe an invalid actuation of a general containment isolation signal affecting more than one system. On March 8, 2020, at approximately 2021 CDT, Browns Ferry Nuclear Plant Unit 2 experienced an unexpected loss of the 2A Reactor Protection System (RPS). This resulted in Primary Containment Isolation System (PCIS) groups 2, 3, 6, and 8 isolations, and the initiation of Standby Gas Treatment Trains A and B, and Control Room Emergency Ventilation System Train A. All affected safety systems responded as expected.

"Plant conditions which initiate PCIS Group 2 actuations are Reactor Vessel Low Water Level (Level 3) or High Drywell Pressure. The PCIS Group 3 actuations are initiated by Reactor Vessel Low Water Level (Level 3) or Reactor Water Cleanup Area High Temperature. The PCIS Group 6 actuations are initiated by Reactor Vessel Low Water Level (Level 3), High Drywell Pressure, or Reactor Building Ventilation Exhaust High Radiation (Reactor Zone or Refuel Zone). The PCIS Group 8 actuations are initiated by Low Reactor Vessel Water Level (Level 3) or High Drywell Pressure. At the time of the event, these conditions did not exist; therefore, the actuation of the PCIS was invalid.

"The RPS MG Set trip was believed to have been caused by an intermittent short across a spike suppressor, which led to a loss of generator output signal to a voltage regulator. The affected components have been replaced.

"There were no safety consequences or impact to the health and safety of the public as a result of this event.

"This event was entered into the Corrective Action Program as Condition Report 1593265.

"The NRC Resident Inspector has been notified of this event."


Page Last Reviewed/Updated Friday, June 19, 2020
Friday, June 19, 2020