ENS 57888

v t e ENS Event
18:50 Aug 27, 2025
Title	Concurrent Report for Offsite Notification
Event Description	The following is a summary of information provided by the licensee via phone and email: Centrus American Centrifuge Operating (ACO) received notification from a Fluor-BWXT Portsmouth (FBP) environmental technician supervisor that the chlorine level at outfall '013' was at 0.063 mg/L. This exceeds the National Pollutant Discharge Elimination System permit limit on total chlorine at outfall '013' of 0.05 mg/L. Centrus ACO notified the Ohio Environmental Protection Agency at 1450 EDT. Elevated chlorine levels at outfall '013' were initially noted and reported on August 18, 2025, under EN 57874. Centrus ACO has since determined that a sanitary line break that went into a holding pond is the cause of the elevated chlorine levels. Elevated chlorine levels observed today are attributed to residual chlorine upstream of the outfall. This report is in accordance with condition notification #12816. The NRC regional office was notified.

ENS 57888 +/-
Where
American Centrifuge Plant Ohio (NRC Region 2)
Reporting

Part 70 App A (C)
Time - Person (Reporting Time:+-1.65 h-0.0688 days <br />-0.00982 weeks <br />-0.00226 months <br />)
Opened:	Jeff Spires 17:11 Aug 27, 2025
NRC Officer:	Josue Ramirez
Last Updated:	Aug 27, 2025
57888 - NRC Website
v • d • e

v t e Emergency Notification System
American Centrifuge Plant with Part 70 App A (C)
WEEKMONTHYEAR2025-08-27T18:50:00 [Table view]
[ENS list for American Centrifuge Plant]

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