Unit 1 was performing a plant shutdown in preparation for a refueling outage.
RCS sampling indicated a dose equivalent
Iodine-131 reading of 1.41 microCurie/gram with a Technical Specification limit of 1.0 microCurie/gram. As a result, the licensee declared an Notification of Unusual Event (
NOUE) under
EAL AU121.
To reduce the dose equivalent iodine, the licensee placed maximum purification into service. Actions required to exit the NOUE include reducing dose equivalent iodine to below Technical Specification limits.
The licensee has notified the NRC Resident Inspector.
Notified R1 (Collins), R1DO (Powell), IRD (Cruz), NRREO (Batemen), NRR (Dyer), DHS (Doyle), and FEMA (Fuller).
- * * UPDATE FROM AMY CORDENER TO HOWIE CROUCH @ 0612 EST ON 02/23/08 * * *
The licensee is still in the NOUE. As of 0600, the last RCS sample indicated 1.15 microCurie/gm. NOUE exit criteria will be met when two successive samples indicate less than 1.0 microCurie/gm.
Notified R1DO (Powell)
- * * UPDATE FROM MICHAEL SAUL TO HOWIE CROUCH @ 0927 EST ON 02/23/08 * * *
At 0908 EST, three consecutive Reactor Coolant System I-131 activity samples indicated approximately 0.9 microCuries/gm which is less than the Technical Specification limit. The licensee is still in the NOUE and will exit when at least one more sample indicates less than the Technical Specification limit.
The licensee will be notifying the NRC Resident Inspector. Notified R1DO (Powell).
- * * UPDATE FROM MICHAEL SAUL TO PETE SNYDER @ 1043 EST ON 02/23/08 * * *
At 1035 EST, the licensee exited the NOUE based on four consecutive samples at less than 1.0 microCuries/gm of I-131.
Notified R1DO (Powell), NRREO (Bateman),
IRD (Cruz),
DHS (Inzer) and
FEMA (Sweetser).
