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Event Notification Report for September 04, 2020

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
9/3/2020 - 9/4/2020

** EVENT NUMBERS **


54860 54862 54877 54880

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Agreement State Event Number: 54860
Rep Org: COLORADO DEPT OF HEALTH
Licensee: RockSol Consulting Group, Inc.
Region: 4
City: Grand Junction   State: CO
County:
License #: CO 1020-01
Agreement: Y
Docket:
NRC Notified By: Timothy Thorvaldson
HQ OPS Officer: Brian Lin
Notification Date: 08/26/2020
Notification Time: 18:03 [ET]
Event Date: 08/26/2020
Event Time: 08:00 [MDT]
Last Update Date: 08/26/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
RAY KELLAR (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB (EMAIL)
This material event contains a "Less than Cat 3" level of radioactive material.

Event Text

AGREEMENT STATE REPORT - LOSS OF CONTROL OF RADIOACTIVE MATERIAL

The following information was received from the State of Colorado via email:

"A Troxler 3400 Series moisture/density gauge, containing 9 mCi Cs-137 and 44 mCi Am-241:Be or 66 microCi of Cf-252 sealed sources, fell out of the back of a pickup truck during transport by the licensee and was recovered by a member of the public, who turned the gauge into the fire department and the fire department returned the gauge to the licensee."

Colorado Event Report ID No.: CO200058

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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!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!
Agreement State Event Number: 54862
Rep Org: TEXAS DEPT OF STATE HEALTH SERVICES
Licensee: Chevron Phillips Chemical Company LP
Region: 4
City: Baytown   State: TX
County:
License #: L00962
Agreement: Y
Docket:
NRC Notified By: Arthur Tucker
HQ OPS Officer: Donald Norwood
Notification Date: 08/27/2020
Notification Time: 09:34 [ET]
Event Date: 08/26/2020
Event Time: 00:00 [CDT]
Last Update Date: 09/01/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
RAY KELLAR (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)

Event Text



EN Revision Imported Date : 9/2/2020

EN Revision Text: AGREEMENT STATE REPORT - UNABLE TO DETERMINE IF SOURCE IN SHIELDED POSITION ON LEVEL INDICATOR

The following information was received via E-mail:

"On August 26, 2020, the Agency [Texas Department of State Health Services] was notified by the licensee's radiation safety officer (RSO) that while making preparations for the coming hurricane, the position of the source rod on a Tracerco, Model T-218-160032 [used for level indication] could not be confirmed. The source rod contains 10 cesium-137 sources of 10 milliCuries each (original activity.) The RSO stated when they return the sources to the shielded position, the control system does indicate the sources are shielded as indicated by a light change on the system console. When the licensee attempted to shield the sources on this day, the light did not change to indicate the sources were shielded. The gauge source rod is operated manually. They tried it a couple of times, but the light still did not change. A survey was performed on the outside of the vessel. The RSO stated there wasn't enough change in dose rate readings with shutter in the open and closed positions to determine whether the sources were shielded based on survey. The RSO stated it may be that the sources are not moving, or it may be that there is an issue within the control system causing the light not to change. They cannot determine at this time which problem is occurring. The RSO is contacting the manufacturer to send someone out after the hurricane. There is no risk of exposure. The RSO stated they will update the Agency once the manufacturer determines the problem. Additional information will be provided as it is received in accordance with SA-300."

Texas Incident Number: 9787

* * * RETRACTION ON 9/01/2020 AT 1406 EDT FROM ART TUCKER TO THOMAS HERRITY * * *

The following information was received via e-mail:

"On September 1, 2020, the licensee notified the Agency (Texas DSHS) that on August 31, 2020, a service company came onsite to investigate the shutter problem they had reported, and identified that there was no mechanical issue with the shutter. The problem they had was a failure of the output signal to indicate source position. The source rod was functioning normally. Based on this information, the Agency is retracting this event."

Notified R4DO (Deese) and NMSS Events (email).

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Power Reactor Event Number: 54877
Facility: Prairie Island
Region: 3     State: MN
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: Raymond York
HQ OPS Officer: Thomas Herrity
Notification Date: 09/03/2020
Notification Time: 15:36 [ET]
Event Date: 09/03/2020
Event Time: 14:21 [CDT]
Last Update Date: 09/03/2020
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(2)(xi) - Offsite Notification
Person (Organization):
DAVID HILLS (R3DO)
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 95 Power Operation 95 Power Operation
2 N Y 100 Power Operation 100 Power Operation

Event Text

OFFSITE NOTIFICATION DUE TO A HYDRAULIC OIL SPILL

"On 9/3/2020, at 1421 (CDT), a notification was made to the National Response Center as a result of a spill of approximately 3 fluid ounces of hydraulic oil into the plant waters of Prairie Island Nuclear Plant intake on 9/2/2020.

"This notification is being made as a four-hour, non-emergency notification for a Notification of Other Government Agency. This event is reportable in accordance with 10 CFR 50.72(b)(2)(xi).

"There was no impact to public health and safety.

"The NRC resident inspector has been notified."

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Power Reactor Event Number: 54880
Facility: River Bend
Region: 4     State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: Jason Arms
HQ OPS Officer: Bethany Cecere
Notification Date: 09/04/2020
Notification Time: 01:40 [ET]
Event Date: 09/03/2020
Event Time: 20:48 [CDT]
Last Update Date: 09/04/2020
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
RICK DEESE (R4DO)
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 92 Power Operation 92 Power Operation

Event Text

HIGH PRESSURE CORE SPRAY INOPERABLE

"River Bend Station experienced an inadvertent initiation and injection of High Pressure Core Spray (HPCS) at 2048 [CDT] on 9/3/2020 while operating at 92% power. Initial investigation indicates a power supply failure in the Division III trip units which feeds HPCS and Division III Diesel Initiation signals.

"The Control Room Operator responded to the event by taking manual control of Feedwater Level Control to maintain Reactor Water Level nominal values. The HPCS injection valve was open for approximately 25 seconds before operators manually closed the valve.

"The manual closure of the injection isolation valve caused the system to be incapable of responding to an automatic actuation signal. The manual override of the injection isolation valve was reset approximately 52 minutes after the event. The HPCS system has remained inoperable. The event is being reported in accordance with 10 CFR 50.72(b)(3)(v)(D) as a condition that caused loss of function of the HPCS System.

"No radiological releases have occurred due to this event.

"The Senior NRC Resident Inspector has been notified."

These conditions put the unit in a 14-day LCO (3.5.1) for HPCS Inoperability and a 30-day LCO (3.7.1) for one Standby Service Water Pump Inoperable (2C).


Page Last Reviewed/Updated Friday, September 04, 2020
Friday, September 04, 2020