Unit 2 experienced
RCS Leakage, potentially
pressure boundary leakage, or
Unidentified Leakage greater than 10 gpm for [greater than] 15 minutes. Reactor Vessel
Flange Temperature High Leakoff alarm was received. This met threshold for declaration of an Unusual Event at 1118
CDT per MU6. Unit 2 is currently in MODE 3. Investigation is in progress to identify specific leakage location.
The plant is stable, leakage indicates about 32 gpm and the startup has been stopped. There is no impact on Unit 1.
The licensee notified the NRC Resident Inspector and State authorities.
Notified DHS SWO, FEMA Ops Center, DHS NICC,. Notified FEMA National Watch and Nuclear SSA via email.
- * * UPDATE FROM RICARDO ROSAS TO VINCE KLCO ON 5/15/16 AT 1626 EDT * * *
At 1459 CDT, the conditions under MU6 are no longer met. The site has terminated the Unusual Event. In addition, a press release will be made of this event.
Unit 2 is stable and in Mode 3 pending further evaluation. The leak stopped when a loop drain isolation valve was closed.
The licensee notified the NRC Resident Inspector and State and local authorities.
Notified the R3DO (Duncan),
NRR EO (Morris),
IRD MOC (Grant),
DHS SWO,
FEMA Ops Center, and
DHS NICC. Notified the
FEMA National Watch and Nuclear
SSA via email.
