ML100780501

E-mail from Eric Thomas, NRR to Richard Conatser, NRR on 11/23/09 NRC Operations Center Event Report Page

ML100780501
Person / Time
Site:	Three Mile Island
Issue date:	11/23/2009
From:	Eric Thomas NRC/NRR/DIRS/IOEB
To:	Conatser R NRC/NRR/DIRS/IHPHPB
References
FOIA/PA-2010-0118
Download: ML100780501 (2)

Text

Page 1 of 2 From: Thomas, Eric Sent: Monday, November 23, 2009 7:15 AM To. Conatser, Richard Power Reactor 45514 11/23/2009 U.S. Nuclear Regulatory Commission Operations CenterEvent Report Page 1 Event#

THREE MILE ISLAND 1

[1] B&W-L-LP,[2]. B&W TL-LP ROGER BARNES BILL HUFFMAN 11/22/2009 11/21/2009 01:13 11/22/2009 RAYMOND MCKINLEY SAMSON LEE SAM COLLINS JOHN GROBE MICHAEL JOHNSON R1DO NRR EO R1 RA NRR EDO IRD OFFSITE NOTIFICATION N 0 Refueling 0 Refueling BRIAN McDERMOTT NRC Notified by:

HQ Ops Officer:

Notification Date I Time:

Event Date I Time:

Last Modification:

Unit Site:

Unit:

Reactor Type:

10 CFR Section:

COMM ASSTS BRIEFING Notifications:

Emergency Class: NON EMERGENCY 1

Scram Code RX Crit Init Power Initial RX Mode Curr Power Current RX Mode 22:45 Containment Type: DRY AMB No Region: 1 State : PA (EST)

(EST) 50.72(b)(2)(xi)

RADIATION RELEASE IN CONTAINMENT ASSOCIATED WITH STEAM GENERATOR REMOVAL "This event is being reported via the ENS to the NRC Operations Center within four hours after notifications were made to the Pennsylvania Emergency Management Agency and local counties for an event of potential public interest. This notification was made at 22:45 on November 21, 2009, after the occurrence of an event related to the safety and health of onsite personnel for which a press release has been made. The press release was made following the event of potential public interest notifications. This report is being made under 10 CFR 72.75(b)(2).

"At approximately 16:00 on Saturday November 21, 2009, low levels of radiation activity were measured on radiation monitors installed in the TMI-1 reactor building, Personnel were directed to immediately leave the reactor building until the source of the activity could be identified. Surveys directly outside of the reactor building construction opening indicated a slight increase in activity. Levels have returned to normal. No contamination was

Page 2 of 2 identified outside of the reactor building. Approximately 150 workers were monitored for exposure to the radiation activity, No worker approached or exceeded any exposure limits. The sources of the activity are believed to be from maintenance tasks related to cutting lines in preparation for removal of the 'B' Steam Generator,"

The licensee is still investigating the cause of the event but indicated that the radiation release is no longer in progress, Containment Ventilation is established to provide an inflow into containment to the extent possible (considering the openings in containment).

The licensee contacted state and local authorities and the Pennsylvania Emergency Management U.S. Nuclear Regulatory Commission NRR/DIRS/IOEB OWFN-7H23 eric.thomas_@nrc.gov In01 -415-6772 (office)L (b)(6)