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Event Notification Report for January 24, 2019

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
1/23/2019 - 1/24/2019

** EVENT NUMBERS **

Agreement State	Event Number: 53826
Rep Org: UTAH DIVISION OF RADIATION CONTROL Licensee: IDAHOAN FOOD, LLC (IDAHO) Region: 4 City: OGDEN State: UT County: License #: G/L Agreement: Y Docket: NRC Notified By: PHILLIP GOBLE HQ OPS Officer: HOWIE CROUCH	Notification Date: 01/14/2019 Notification Time: 18:12 [ET] Event Date: 09/21/2006 Event Time: 00:00 [MST] Last Update Date: 01/15/2019
Emergency Class: NON EMERGENCY 10 CFR Section: AGREEMENT STATE	Person (Organization): JAMES DRAKE (R4DO) NMSS_EVENTS_NOTIFICATION (EMAIL)

This material event contains a "Less than Cat 3" level of radioactive material.

Event Text

UTAH AGREEMENT STATE REPORT - RECOVERY OF A LOST RADIOACTIVE SOURCE

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

"The NMED Item Number: 140349 describes that a fixed gauge source (Serial Number: 207822A) from Idahoan Food, LLC was lost/stolen/missing [last seen in 2006; entered in NMED on 3/31/14]. The source was found in Utah on November 28, 2018. On January 10, 2019 it was recovered and properly disposed of by Qal-Tek.

"For details on the identification, retrieval, and disposal of the source please see the following below:

"On November 28, 2018 the Utah Division of Waste Management was notified by the Ogden, Utah Police Department that an unknown radioactive source had been found at the Swift Building located at 390 West Exchange Road in Ogden, Utah. It was found during the EPA cleanup of the site.

"On December 2, 2018 [an Ogden Police Officer] visited the Swift Building and determined the following about the source:

Ronan Engineering Company RLL1 (Radiation Low Level Source)
Serial Number: 207822A
Date: 08/06
Activity level: 0.81 mCi Cs-137

"Doing a search of the serial number in the NRC ADAMS system it was determined that the source was a lost/stolen/missing source from Idahoan Food, LLC, a NRC General Licensee in the State of Idaho (See ML4170B170 for details).

"On December 6, 2018 the State of Utah notified Idahoan Foods, LLC that the source had been found and gave them the contact information for the Ogden Police Department. On December 11, 2018 the State of Utah notified the NRC by e-mail that the source (207822A) had been found in Utah. On January 14, 2019 the State of Utah let the NRC know that the source had been properly disposed of on January 10, 2019 by Qal-Tek."

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

Part 21	Event Number: 53846
Rep Org: ENGINE SYSTEMS, INC Licensee: ENGINE SYSTEMS, INC Region: 1 City: Rocky Mount State: NC County: License #: Agreement: Y Docket: NRC Notified By: DAN ROBERTS HQ OPS Officer: JEFFREY WHITED	Notification Date: 01/24/2019 Notification Time: 17:15 [ET] Event Date: 12/06/2018 Event Time: 00:00 [EST] Last Update Date: 03/21/2019
Emergency Class: NON EMERGENCY 10 CFR Section: 21.21(a)(2) - INTERIM EVAL OF DEVIATION	Person (Organization): GERALD MCCOY (R2DO) HIRONORI PETERSON (R3DO) - PART 21/50.55 REACTORS (EMAIL)

Event Text

PART 21 - POTENTIAL DEFECT IN VICKERS VOLTAGE REGULATOR SYSTEM

The following summary was provided in the Part 21 report:

"ESI [Engine Systems Inc.] was notified on December 6, 2018 of a potential issue with saturable reactors (also referred to as magnetic amplifiers) supplied to Monticello Nuclear Generating Plant. ESI provided the reactors as like-for-like replacements for the existing magnetics of the original Vickers voltage regulator and static exciter. During system testing performed by Monticello at another vendor facility, issues with the static excitation system were identified which prevented proper control of the generator field current. Troubleshooting identified several potential causes and ESI believes there may be a potential deficiency in the saturable reactor, P/N 8408218-ESI.

"This component is integral to operability of the Vickers style voltage regulator and static exciter systems used on many emergency diesel generator sets in the nuclear industry. A deficiency in the reactor would adversely affect the ability to control generator output voltage and therefore adversely affect emergency diesel generator set performance.

"ESI is in the process of performing additional testing and analysis at the transformer manufacturer's facility to determine if a deficiency exists in this component. ESI is unable to complete an evaluation within the 60-day requirement."

ESI has supplied the part to NRC licensees but, to ESI's knowledge, none of the components have been installed. ESI is notifying each customer and advising not to install the reactors until the evaluation is complete.

This Part 21 Report affects the following licensees:
Surry Power Station
Turkey Point Nuclear Generating Station
Monticello Nuclear Generating Station

Point of Contact: Dan Roberts
Telephone: 525-977-2720
Fax: 252-446-1134
175 Freight Road, Rocky Mount, NC 27804

* * * UPDATE ON 3/21/19 AT 1448 EST FROM DAN ROBERTS TO JEFFREY WHITED * * *

The following is a summary of the information provided by the vendor via fax:

On January 24, 2019, Engine Systems Inc. (ESI) issued interim report 10 CFR 21-0124-INT, rev.0 regarding an identified deviation for which ESI was unable to complete an evaluation within the 60-day requirement. Per the interim report, ESI committed to complete the evaluation by March 22, 2019. The evaluation is now complete and the deviation is determined to be reportable in accordance with 10 CFR Part 21.

Identification of the basic component supplied within the United States which fails to comply or contains a defect and nature of the defect:

Part Number (P/N) 8408213-ESI: Power Current Transformer - Insufficient core gap.
P/N 8408218-ESI: Saturable Reactor - Differences in coil winding and core lamination from original design.
P/N 8411387-ESI: Excitation Power Transformer - Incorrect polarity

Each of the devices listed above provide a specific function within the static exciter of a Vickers voltage regulator system. The exciter supplies DC excitation current to the generator field based on input from the voltage regulator. Failure of any one of the components to perform correctly will negatively impact excitation current supplied to the generator field which in turn directly affects generator output. Therefore, failure of any one of the components may prevent the emergency diesel generator from carrying its associated safety-related loads.

The corrective action which has been, is being, or will be taken:

P/N 8408213: Return to ESI for rework. The part required additional insulating material to increase the core gap.
P/N 8408218: Return to ESI for replacement.
P/N 8411387: Return to ESI for rework to have primary terminal markings re-labeled.

Contacts:

John Kriesel
Engineering Manager
Engine Systems Inc.
175 Freight Rd.
Rocky Mount, NC 27804

Dan Roberts
Quality Manager
Engine Systems Inc.
175 Freight Rd.
Rocky Mount, NC 27804

Affected facilities still include Monticello, Turkey Point, and Surry.

Notified R2DO (Montgomery) and R3DO (McCraw), Part 21/50.55 Reactors group via e-mail.

Page Last Reviewed/Updated Thursday, March 25, 2021