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Category:NRC Preliminary Notification of Event/Occurrence
MONTHYEARPNO-III-24-001, Braidwood, Braidwood Nuclear Generating Plant Expiration of Security Officer Union Contract2024-04-0101 April 2024
PNO-III-24-001: Braidwood, Braidwood Nuclear Generating Plant Expiration of Security Officer Union Contract
ML17165A4592017-06-14014 June 2017
PNO-III-2017-001: Braidwood Station, Units 1 and 2; Release of Circulating Water Containing Tritium Using an Unauthorized Release Path
PNO-III-11-005, Braidwood Unit 2 Unusual Event Due to Loss of All Control Room Annunciators2011-03-24024 March 2011
PNO-III-11-005, Braidwood Unit 2 Unusual Event Due to Loss of All Control Room Annunciators
PNO-III-10-014, A; Update - Shutdown of Braidwood Reactors Unit 1 & 22010-08-23023 August 2010
PNO-III-10-014A; Update - Shutdown of Braidwood Reactors Unit 1 & 2
ML1022902932010-08-17017 August 2010
PNO-III-10-014 - Shutdown of Braidwood Reactors Unit 1 & 2
PNO-III-10-001, Braidwood Station Declaration of Unusual Event Due to Fire within the Protected Area2010-01-11011 January 2010
PNO-III-10-001: Braidwood Station Declaration of Unusual Event Due to Fire within the Protected Area
PNO-III-09-007, A: Unusual Event at Braidwood Unit 2 Due to Loss of Offsite Power Unit Will Remain Shut Down for More than 72 Hours (Update)2009-08-0505 August 2009
PNO-III-09-007A: Unusual Event at Braidwood Unit 2 Due to Loss of Offsite Power Unit Will Remain Shut Down for More than 72 Hours (Update)
PNO-III-06-020, Braidwood, Nrc'S Review of Exelon'S Plans for Resuming Radioactive Discharges Through the Braidwood Blowdown Line2006-09-0808 September 2006
PNO-III-06-020: Braidwood, Nrc'S Review of Exelon'S Plans for Resuming Radioactive Discharges Through the Braidwood Blowdown Line
PNO-III-06-015, Braidwood Tritium Contamination Issues (Update)2006-06-13013 June 2006
PNO-III-06-015: Braidwood Tritium Contamination Issues (Update)
PNO-III-06-011, Braidwood: Tritiated Steam Released to the Environment2006-04-0707 April 2006
PNO-III-06-011, Braidwood: Tritiated Steam Released to the Environment
PNO-III-06-007, Braidwood 1 and 2 - Tritium Contamination Issues2006-03-30030 March 2006
PNO-III-06-007: Braidwood 1 and 2 - Tritium Contamination Issues
PNO-III-05-016, D Braidwood Tritium Contamination Issues (4th Upgrade)2006-03-15015 March 2006
PNO-III-05-016D Braidwood Tritium Contamination Issues (4th Upgrade)
ML0603405832006-02-0303 February 2006
PNO-III-05-016C Potential Off-Site Migration of Tritium Contamination (3rd Update)
ML0601806232006-01-18018 January 2006
PNO-III-05-016B: Braidwood Potential Off-Site Migration of Tritium Contamination (2nd Update)
ML0618400692005-12-0909 December 2005
E-mail from Habighorst to Lynch, Braidwood Tritium - Recent Contamination Contours, Etc
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NRC Email from Justine Burza to Pn Recipients PNO-III-05-016A
ML1020302372005-12-0707 December 2005
Preliminary Notification of Event or Unusual Occurrence
ML0609700692005-12-0101 December 2005
NRC Email W/Att, from Jan Strasma to Richard Skokowski Et Al Draft Pn on Braidwood
ML0533505122005-12-0101 December 2005
PNO-RIII-05-016 Braidwood Potential Off-site Migration of Tritium Contamination
ML0609700572005-12-0101 December 2005
Email for Dale Ambler to Steven Orth Attendees at Pn Debrief
ML0609700592005-12-0101 December 2005
NRC Email from Anne Boland to Geoffrey Grant and James Caldwell PNO-RII-05-016
ML0618401842005-12-0101 December 2005
E-mail from Boland to Shane, NRC Notification Braidwood
PNO-III-05-013, ; Braidwood Forced Outage Due to Reactor Coolant Pump Leak-Off in Excess of Vendor Recommendations2005-09-13013 September 2005
PNO-III-05-013; Braidwood Forced Outage Due to Reactor Coolant Pump Leak-Off in Excess of Vendor Recommendations
2024-04-01
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June 13, 2006 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE - PNO-III-06-015 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by the Region III staff on this date.
Facility Licensee Emergency Classification Braidwood 1 and 2 Notification of Unusual Event Exelon Generation Co. Alert Braceville, Illinois Site Area Emergency Docket: 50-456 and 50-457 General Emergency License: NPF-72; NPF-77 X Not Applicable
SUBJECT:
TRITIUM CONTAMINATION ISSUES DESCRIPTION:
Note: This preliminary notification provides additional information on tritium contamination issues which were previously documented in PNO-III-05-016 and four updates to that preliminary notification.
Updated information:
On June 11, 2006, the licensee began pumping low level tritium contaminated water from a recently purchased offsite pond and returning it through the blowdown line to the Kankakee River. This process is a part of the licensees Tritium Remediation Plan.
Reducing the level of water in the pond will reduce the tritium contamination of groundwater in the surrounding area. The water will be pumped into the circulating water discharge line for discharge to the Kankakee River, which will provide significant dilution to the low levels of contamination in the pond. The discharge line is the normal path for liquid radioactive effluents from the plant, under the NRC license and Illinois EPA discharge permit.
The licensee will continue to pump water from the pond to maintain a level about 5 to 7 feet below its current level, which is expected to draw additional contaminated groundwater into the pond for removal and reduce the impact of this contamination on the environment.
On May 24, 2006, the licensee received an Agreed Preliminary Injunction Order from the State of Illinois and Will County which gave the utility permission to move forward with these remediation efforts.
CONTACTS:
Steven Orth Anne Boland 630/829-9827 630/829-9601
PNO-III-06-015 Resident and regional NRC inspectors provided oversight of the licensees preparations for and implementation of the pumping activities. Their actions included inspecting vacuum breaker vaults, monitoring pond pumping activities, verifying proper operation of the vacuum breaker vault leak detection system, and sampling of the water being removed from the pond.
