ML061700383

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Inadvertent Liquid Releases - Portions Outside the Scope of the Request
ML061700383
Person / Time
Site: Braidwood  Constellation icon.png
Issue date: 06/13/2006
From:
- No Known Affiliation
To:
Office of Nuclear Reactor Regulation
References
FOIA/PA-2006-0115, FOIA/PA-2010-0209
Download: ML061700383 (1)


Text

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'.On November 30, 2005, the licensee informed the NRC Resident Inspectors of higher-than

ý 6xpcted tritium levels (-58,000 picoCuries per liter) measured in on-site monitoring wells at the

-:,,no.rther edge of the owner controlled area. The licensee attributed the higher levels of tritium to 4 'historical vacuum breaker valve leakage in the circulating water blowdown line to the Kankakee River that occurred in 1998 and 2000. The licensee uses the blowdown line to perform liquid effluent releases to the river.

As of December 4, 2005, the licensee has detected measurable levels of tritium in offsite

-.groundwater. Although nearby residential wells have not shown any tritium above normal

.,.,background, the licensee detected elevated levels of tritium (as high as approximately 33,700 picoCuries per liter) in monitoring wells in a vacant development immediately offsite. The licensee continues to monitor and to develop plans for remediation.

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