W3F1-2023-0002, SR 2023-001-00 for Waterford Steam Electric Station, Unit 3, Radiation Monitor Inoperable Greater than 30 Days

SR 2023-001-00 for Waterford Steam Electric Station, Unit 3, Radiation Monitor Inoperable Greater than 30 Days

ML23005A284
Person / Time
Site:	Waterford
Issue date:	01/05/2023
From:	Milster L Entergy Operations
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
W3F1-2023-0002 SR 2023-001
Download: ML23005A284 (1)

Text

~ entergy Leia Milster Manager Regulatory Assurance 504-739-6250 W3F1 -2023-0002 10 CFR 50.4 January 5, 2023 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Special Report SR 2023-001-00 Radiation Monitor Inoperable Greater Than 30 Days Waterford Steam Electric Station, Unit 3 NRC Docket No. 50-382 Renewed Facility Operating License No. NPF-38 Entergy Operations, Inc. (Entergy) is submitting Special Report SR-2023-001-00 for Waterford Steam Electric Station, Unit 3 (Waterford 3). This Special Report is submitted as required by Waterford 3 Technical Specification (TS) 3.3.3.1, "Radiation Monitoring Instrumentation," which requires the minimum number of Effluent Accident Monitor channels shown in TS Table 3.3-6 to be operable. If the monitor is not restored to operable status within 30 days after the failure, a Special Report is required to be submitted in accordance with TS 6.9.2 within 14 days after the failure outlining the actions taken, the cause of the inoperability and the plans and schedule for restoring the system to OPERABLE status.

This letter contains no new commitments.

Should you have any questions concerning this issue, please contact Leia Milster, Manager, Regulatory Assurance, at 504-739-6250.

Leia Milster LM/jkb Entergy Operations, Inc., 17625 River Road, Killona, LA 70057

W3F1-2023-0002 Page 2 of 2

Enclosure:

Waterford 3 Special Report SR-2023-001 -00 cc: NRC Region IV Regional Administrator NRC Senior Resident Inspector - Waterford Steam Electric Station, Unit 3 NRC Project Manager - Waterford Steam Electric Station, Unit 3 Louisiana Department of Environmental Quality

Enclosure W3F1-2023-0002 Special Report SR-2023-001-00

W3F1 -2023-0002 Enclosure Page 1 of 2 SPECIAL REPORT SR-2023-001-00 Radiation Monitor Inoperable Greater Than 30 Days DESCRIPTION The Waterford Steam Electric Station, Unit 3 (Waterford 3) Component Cooling Water (CCW) Train A radiation monitor was declared inoperable on November 24, 2022.

Operability was not restored within the required 30-day period as specified in Waterford 3 Technical Specification (TS) 3.3.3.1, "Radiation Monitoring Instrumentation," Table 3.3-6.

This Special Report is submitted to the Nuclear Regulatory Commission (NRC) in accordance with TS 6.9.2, "Special Reports," and 10 CFR 50.4, "Written communications,"

within the next 14 days outlining the actions taken, the cause of the inoperability and the plans and schedule for restoring the system to operable status.

The CCW Process Radiation Monitors are designed to detect leakage into the monitored system from components that may contain radioactive contamination. These process monitors have an alarm function that annunciates when activity levels at or above the alarm setpoints are detected. This alarm provides an opportunity for the operator to isolate the system and/or equipment and perform investigative activities to locate and repair the source of leakage.

ACTIONS TAKEN On November 24, 2022, Condition Report CR-WF3-2022-07717 was initiated describing the condition that the control room received annunciator CCW Header A Activity High (PRMIRE7050 A). CCW Train A radiation monitor PRMIRE7050 A indicated that it failed its source check. Maintenance technicians performed local troubleshooting and manual source checks per the annunciator response, but the problem could not be resolved. The required actions were taken in accordance with TS 3.3.3.1, Table 3.3-6, and an entry in the Equipment Out of Service log was initiated to track the condition. The Chemistry Department established the pre-planned alternate method of monitoring as required.

Maintenance has performed extensive troubleshooting including seating, reseating, and testing of circuit boards, motherboard testing, and a replacement of the low voltage power supply.

CAUSE OF INOPERABILITY The cause of the inoperability is a problem with the power being supplied to the radiation monitor.

W3F1 -2023-0002 Enclosure Page 2 of 2 PLANS AND SCHEDULE FOR RESTORING OPERABLE STATUS Maintenance and Engineering continue to troubleshoot the cause of the inoperability along vendor assistance. The estimated date for restoration to operable status is January 15, 2023.