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Event Notification Report for May 12, 2020

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
5/11/2020 - 5/12/2020

** EVENT NUMBERS **


54689 54701

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Agreement State Event Number: 54689
Rep Org: CALIFORNIA RADIATION CONTROL PRGM
Licensee: RMA GROUP
Region: 4
City: CARSON   State: CA
County:
License #: 8055-19
Agreement: Y
Docket:
NRC Notified By: DONALD OESTERLE
HQ OPS Officer: HOWIE CROUCH
Notification Date: 05/01/2020
Notification Time: 12:22 [ET]
Event Date: 04/28/2020
Event Time: 00:00 [PDT]
Last Update Date: 05/04/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
JAMES DRAKE (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB (EMAIL)
- CNSNS (MEXICO) (EMAIL)
This material event contains a "Less than Cat 3" level of radioactive material.

Event Text

AGREEMENT STATE REPORT - STOLEN TROXLER MOISTURE DENSITY GAUGE

The following information was received from the state of California via email:

"On 4/30/2020, at approximately 1127 [PDT], the RSO [radiation safety officer] of RMA Group, RML Number 8055-19, contacted RHB [California Radiologic Health Branch] Brea concerning a moisture/density gauge, Troxler, model 3440, serial number 25671 (Cs-137, 0.3 GBq, Am-241, 1.50 GBq) that had been stolen from in front of a private apartment complex while the RMA employee was offloading his vehicle. The Troxler radioactive gauge was left on the sidewalk during offloading of the vehicle. [The RMA employee] forgot about the gauge he had left on the sidewalk as he then drove off to have his vehicle washed. When he returned from the carwash at approximately 1730 to 1800 on 4/28/2020, he realized that he had left the radioactive gauge in front of the apartment complex and that it was no longer there. The [RSA employee] finally reported the theft to the RMA RSO on 4/29/2020 at 1215, prior to reporting the theft to Los Angeles Police Department at the West Los Angeles office on 4/29/2020 at 1245. A copy of the theft report and the [employee's] statement has been sent to RHB Brea as part of this report. [The RMA RSO] will utilize local papers to attempt to retrieve the stolen gauge as well as notifying local servicing vendors of radioactive gauges to be alert of the serial number of the stolen gauge in case it turns up for any of their services.

"The investigation will continue to determine if the radioactive gauge can be recovered in a reasonable time frame. This is being reported to the NRC Operations Center as a 24-hour report under 10 CFR 20.220(a)(1)(i) since the radioactive gauge has been stolen with the source handle locked and the Type A transport container locked."

California Report Number 5010-043020


* * * UPDATE FROM DONALD OESTERLE TO DONALD NORWOOD AT 1516 EDT ON 5/4/2020 * * *

The gauge has been recovered intact. A formal closing report will be submitted later.

Notified R4DO (Drake), and via E-mail: NMSS Events Notifications E-mail group, ILTAB, and CNSNA (Mexico).

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: 54701
Facility: Palo Verde
Region: 4     State: AZ
Unit: [] [] [3]
RX Type: [1] CE,[2] CE,[3] CE
NRC Notified By: Jason Hill
HQ OPS Officer: Brian Lin
Notification Date: 05/11/2020
Notification Time: 13:07 [ET]
Event Date: 03/14/2020
Event Time: 12:44 [MST]
Last Update Date: 05/11/2020
Emergency Class: Non Emergency
10 CFR Section:
50.73(a)(1) - Invalid Specif System Actuation
Person (Organization):
NEIL O'KEEFE (R4DO)
Unit SCRAM Code RX Crit Initial PWR Initial RX Mode Current PWR Current RX Mode
3 N Y 100 Power Operation 100 Power Operation

Event Text

INVALID ACTUATION OF SPRAY POND PUMP SYSTEM - 60 DAY REPORTS

"The following event descriptions are based on information currently available. If through subsequent reviews of these events additional information is identified that is pertinent to the events or alters the information being provided at this time a follow-up notification will be made via the ENS or under the reporting requirements of 10 CFR 50.73.

"This telephone notification is being made pursuant to the reporting requirements of 10 CFR 50.73(a)(2)(iv)(A) and 50.73(a)(1) to describe invalid actuations of both trains of the Palo Verde Nuclear Generating Station (PVNGS) Unit 3 essential spray pond (SP) system, which serves as an emergency service water system that does not normally run and serves as an ultimate heat sink as described in 10 CFR 50.73(a)(2)(iv)(B)(9).

"This notification covers two similar, but separate invalid actuations occurring in Unit 3 on March 14, 2020 at 12:44 [MST] and again on April 25, 2020 at 12:10 [MST]. On each day, an invalid actuation of the Unit 3 train "B" Fuel Building Essential Ventilation Actuation Signal (FBEVAS) occurred during performance of the Balance of Plant Engineered Safety Features Actuation System weekly auto test. The auto/manual pushbutton was depressed to initiate the test and the sequencer immediately tripped FBEVAS train "B" with subsequent cross trip of FBEVAS train "A". These actuations resulted in complete and successful actuations of both trains of essential spray pond pumps.

"The events were entered into the PVNGS corrective action program and a station evaluation is in progress. There was no adverse impact to public health and safety nor to plant employees.

"The NRC resident inspectors have been informed."


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Friday, June 19, 2020