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Event Notification Report for December 10, 2019

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
12/9/2019 - 12/10/2019

** EVENT NUMBERS **

Agreement State	Event Number: 54416
Rep Org: KENTUCKY DEPT OF RADIATION CONTROL Licensee: ARKEMA INC. Region: 1 City: CALVERT CITY State: KY County: License #: 201-308-56 Agreement: Y Docket: NRC Notified By: AJ BHATTACHARYYA HQ OPS Officer: BRIAN LIN	Notification Date: 11/29/2019 Notification Time: 09:47 [ET] Event Date: 11/27/2019 Event Time: 00:00 [CST] Last Update Date: 11/29/2019
Emergency Class: NON EMERGENCY 10 CFR Section: AGREEMENT STATE	Person (Organization): MARK HENRION (R1DO) NMSS_EVENTS_NOTIFICATION (EMAIL)

Event Text

AGREEMENT STATE REPORT - STUCK SHUTTER

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

"Kentucky Radiation Health Branch (KYRHB) was notified by email on November 27, 2019, of an on/off shutter equipment failure on two separate fixed gauging devices (Ronan SA1-F37, Serial Numbers 9472GK and 1079GK; Cs-137 activity 500 milliCi each). Kentucky Licensee, Arkema, Inc. reports November 27, 2019 during a required 6-month check, techs discovered the shutter was not closing. Verified by survey meter, the readings did not close fully as expected. Survey numbers were not reported, but a full report will be submitted on December 2, 2019. The Licensee RSO [Radiation Safety Officer] notified plant operations department and the safety department that entry into the vessels is only via a sealed manway, and that entry is not permitted until the shutter mechanism has been repaired, or the gauges have been replaced. Ronan Engineering is scheduled to be notified after the Thanksgiving break. The licensee will provide timely updates to the KYRHB and the licensee will reinstruct employees of event reporting criteria."

Kentucky Event Report ID No.: KY190011

Power Reactor	Event Number: 54430
Facility: COMANCHE PEAK Region: 4 State: TX Unit: [1] [] [] RX Type: [1] W-4-LP,[2] W-4-LP NRC Notified By: DAMON SCHROEDER HQ OPS Officer: BRIAN LIN	Notification Date: 12/10/2019 Notification Time: 00:03 [ET] Event Date: 12/09/2019 Event Time: 21:26 [CST] Last Update Date: 12/10/2019
Emergency Class: NON EMERGENCY 10 CFR Section: 50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE	Person (Organization): JEREMY GROOM (R4DO)

Unit

SCRAM Code

RX Crit

Initial PWR

Initial RX Mode

Current PWR

Current RX Mode

100

Power Operation

100

Power Operation

Event Text

MAIN STEAM LINE (MSL) RADIATION MONITOR TO BE NON-FUNCTIONAL

"1-RE-2328 Main Steam Line #1-04 MSL181 received an operate failure on loss of counts. At time 2126 [CDT], the radiation monitor was declared non-functional.

"With this radiation monitor non-functional, all of the emergency action levels for a steam generator tube rupture in steam generator 1-04 could neither be evaluated nor monitored. This unplanned condition is reportable as a loss of assessment capability per 10 CFR 50.72(b)(3)(xiii).

"Comanche Peak Nuclear Power Plant (CPNPP) has assurance of steam generator integrity and fuel cladding integrity. There is a negligible safety significance to the current condition from a public health and safety perspective.

"Additionally, compensatory measures are in place to assure adequate monitoring capability is available to implement the CPNPP emergency plan in the unlikely event of challenges to the steam generator or fuel cladding. The N16 radiation monitor serves as a backup with alarm function and additionally Radiation Protection technicians have been briefed on taking local readings with a Geiger-Mueller tube on MSL 1-04.

"Corrective actions are being pursued to restore 1-RE-2328 to functional status.

"The NRC Resident Inspector has been notified."

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