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Event Notification Report for May 15, 2019

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
5/14/2019 - 5/15/2019

** EVENT NUMBERS **

Non-Agreement State	Event Number: 54051
Rep Org: UNIVERSITY OF MICHIGAN Licensee: UNIVERSITY OF MICHIGAN Region: 3 City: ANN ARBOR State: MI County: License #: 21-00215-04 Agreement: N Docket: NRC Notified By: MARK DRISCOLL HQ OPS Officer: JEFFREY WHITED	Notification Date: 05/06/2019 Notification Time: 14:00 [ET] Event Date: 11/30/2018 Event Time: 00:00 [EDT] Last Update Date: 05/06/2019
Emergency Class: NON EMERGENCY 10 CFR Section: 20.2201(a)(1)(ii) - LOST/STOLEN LNM>10X	Person (Organization): KENNETH RIEMER (R3DO) NMSS_EVENTS_NOTIFICATION (EMAIL) ILTAB (EMAIL) - CNSC (CANADA) (EMAIL)

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

Event Text

LOST TRITIUM EXIT SIGNS

The following is a summary of a phone call with the licensee:

After performing an inventory of Tritium exit signs in April of this year, a Senior Health Physicist inquired about the location of two specific missing signs. The Senior Health Physicist found that the building had been under renovation in 2018 and a contractor likely removed the two exit signs in November, 2018. The licensee is currently waiting on information from the contractor regarding the exit signs.

The licensee will be notifying NRC Region III.

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

Agreement State	Event Number: 54053
Rep Org: UTAH DIVISION OF RADIATION CONTROL Licensee: ALS LABORATORY GROUP ENVIRONMENTAL DIVISION Region: 4 City: SALT LAKE CITY State: UT County: License #: UT 1800237 Agreement: Y Docket: NRC Notified By: PHILIP GRIFFIN HQ OPS Officer: JOANNA BRIDGE	Notification Date: 05/07/2019 Notification Time: 13:57 [ET] Event Date: 04/26/2019 Event Time: 15:00 [MDT] Last Update Date: 05/07/2019
Emergency Class: NON EMERGENCY 10 CFR Section: AGREEMENT STATE	Person (Organization): RYAN ALEXANDER (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 - LOST CALIBRATION SOURCES

The following was received via e-mail:

"During a routine [Utah Division of Radiation Control] inspection on April 26, 2019, the licensee discovered that two planchet sources containing radioactive materials were missing from its secured laboratory. The sources were used to calibrate a wipe counting system that the licensee rarely used. One source contained 9.9 nanoCuries of strontium-90 (Sr-90) and the other source contained 17.81 nanoCuries of plutonium-239 (Pu-239). The activity of the Sr-90 source was well below the exempt quantity threshold. The inspector gave the licensee until May 3, 2019, to search for the sources and to let the inspector know the results of the search. On May 2, 2019, the licensee informed the Division that, after an exhaustive search, the licensee had failed to locate the sources. Following a review of the applicable rules by Division staff on May 6, 2019, the inspector verified with the licensee that the sources were still missing and informed the licensee of the incident notification requirements and the anticipated enforcement activities to be taken by the Division."

Event Report No.: UT190001

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

Power Reactor	Event Number: 54064
Facility: COMANCHE PEAK Region: 4 State: TX Unit: [] [2] [] RX Type: [1] W-4-LP,[2] W-4-LP NRC Notified By: ROBERT DANIELS HQ OPS Officer: JEFF HERRERA	Notification Date: 05/15/2019 Notification Time: 02:21 [ET] Event Date: 05/14/2019 Event Time: 21:51 [CDT] Last Update Date: 05/15/2019
Emergency Class: NON EMERGENCY 10 CFR Section: 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION	Person (Organization): DAVID PROULX (R4DO)

Unit

SCRAM Code

RX Crit

Initial PWR

Initial RX Mode

Current PWR

Current RX Mode

100

Power Operation

Event Text

VOLTAGE TRANSIENT DUE TO LOSS OF OFFSITE SWITCHYARD

"At 2151 CDT, on 14 May 2019, Comanche Peak Nuclear Power Plant (CPNPP) experienced a voltage transient within the onsite 138kV switchyard due to the loss of one of the offsite switchyards supplying power to the CPNPP 138kV switchyard. The reduction in safeguards bus voltage due to the transient caused the Unit 2 safeguard busses to load shed and perform a slow transfer to power supplied from 345kV transformer XST2A. Unit 2 was subjected to actuation of both blackout sequencers causing an automatic start of both motor driven Auxiliary Feedwater (AFW) pumps as well as the turbine-driven AFW pump.

"No emergency diesel generators started by design. All AFW pumps have been returned to standby status. All other safety systems functioned as designed. Unit 1 is currently defueled, and was unaffected by this event.

"The licensee has notified the NRC resident inspector."

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