ENS 51850
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ENS Event | |
---|---|
20:45 Apr 6, 2016 | |
Title | Unusual Event Declared Due to Main Steamline High High Radiation Condition |
Event Description | At 1545 CDT on 04/06/16 Browns Ferry Unit 3 declared and exited the declaration of an unusual event due to a main steam line high high radiation condition. Power to Unit 3 was reduced to 91 percent power. The high radiation condition alarm cleared at 1526 CDT. Browns Ferry Unit 3 reported that the high radiation conditions were due to resin intrusion from the condensate demineralizers into the reactor and hydrogen water chemistry was a potential contributor to the event. The cause is still under investigation.
The NRC Resident Inspector has been notified. State and Local notifications were made. Notified DHS SWO, FEMA Ops Center, NICC Watch Officer, FEMA NWC and Nuclear SSA (email).
At 1941 [CDT] BFN [Brown's Ferry] determined this notification to be potentially newsworthy due to receiving notification that counties [surrounding the plant] were alerted of this event. No plant conditions changed. The licensee may issue a press release. The licensee will notify the NRC Resident Inspector. Notified R2DO (Nease). |
Where | |
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Browns Ferry Alabama (NRC Region 2) | |
Reporting | |
Emergency class: | Unusual Event |
10 CFR 50.72(a) (1) (i), Emergency Class Declaration 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
Time - Person (Reporting Time:+-3.63 h-0.151 days <br />-0.0216 weeks <br />-0.00497 months <br />) | |
Opened: | Matthew Slouka 17:07 Apr 6, 2016 |
NRC Officer: | Jeff Herrera |
Last Updated: | Apr 7, 2016 |
51850 - NRC Website
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Unit 3 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (91 %) |
Browns Ferry with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | |
WEEKMONTHYEARENS 569412024-02-01T18:17:0001 February 2024 18:17:00
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Oil Sheen at Intake Forebay ENS 458202010-04-07T21:10:0007 April 2010 21:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Spill of Water Containing Tritium ENS 443672008-07-27T08:40:00027 July 2008 08:40:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Cable Tray Fire Near Cooling Tower "C" Switchgear ENS 442442008-05-28T21:30:00028 May 2008 21:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Transportation Accident Involving a Radioactive Material Shipment ENS 438932008-01-10T22:00:00010 January 2008 22:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Actuation of Offsite Emergency Siren ENS 438912008-01-10T18:21:00010 January 2008 18:21:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Spill of Water Containing Tritium ENS 436642007-09-26T11:50:00026 September 2007 11:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Oil Sheen in Forebay Area That Is Not from Bfn ENS 435682007-08-15T13:38:00015 August 2007 13:38:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Notification to State Due to Contaminated Material Discovered in Free Release Scrap Material ENS 435382007-07-31T14:30:00031 July 2007 14:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Small Hydraulic Fluid Spill in Intake Bay ENS 429892006-11-07T21:26:0007 November 2006 21:26:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Actuation of an Offsite Emergency Siren ENS 420322005-10-01T15:59:0001 October 2005 15:59:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Concerning an Industrial Accident ENS 408282004-06-18T17:04:00018 June 2004 17:04:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification - Employee Fatality 2024-02-01T18:17:00 | |
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