ML061320329: Difference between revisions

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{{Adams
#REDIRECT [[PNO-III-06-013, Palisades Shutdown to Investigate Control Rod Withdrawal Problem]]
| number = ML061320329
| issue date = 05/11/2006
| title = PNO-III-06-013: Palisades Shutdown to Investigate Control Rod Withdrawal Problem
| author name = Lipa C A, Ramirez F C
| author affiliation = NRC/RGN-III
| addressee name =
| addressee affiliation = Nuclear Management Co, LLC
| docket = 05000255
| license number = DPR-020
| contact person =
| document report number = PNO-III-06-013
| document type = NRC Preliminary Notification of Event/Occurrence
| page count = 1
}}
 
=Text=
{{#Wiki_filter:PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE -- PNO-III-06-013This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or publicinterest significance. The information is as initially received without verification or evaluation, andis basically all that is known by the Region III staff on this date.FacilityPalisades Nuclear PlantNuclear Management Co.
Covert, MI Docket: 50-255License: DPR-20Licensee Emergency Classification Notification of Unusual Event Alert      Site Area Emergency General Emergency x  Not Applicable
 
==SUBJECT:==
SHUTDOWN TO INVESTIGATE CONTROL ROD WITHDRAWAL PROBLEMDESCRIPTION:On May 11, 2006, the plant staff determined that one control rod remained fully inserted in thereactor core during startup following a refueling outage. The condition was identified throughmonitoring incore power levels (neutron flux) while the reactor was at 24 percent power. Control rod position indication had showed the control rod to be in its normal, withdrawn position, but the licensee believes that the control rod may be decoupled from the control roddrive mechanism which moves the rod.The reactor was shut down to investigate and correct the apparent failure of the control rod tobe withdrawn during startup. The resident inspectors will monitor the licensee's activities.Operators manually tripped the reactor from 8 percent power at 3:14 p.m. EDT onMay 11, 2006. All systems functioned normally during the shutdown.The State of Michigan will be informed of the shutdown. The information in this preliminarynotification has been reviewed with licensee management.The licensee notified the NRC Operations Center of the shutdown at 5:35 p.m. EDT onMay 11, 2006. This information is current as of 10 a.m. EDT on May 12, 2006.CONTACTS:Frances RamirezChristine Lipa630/829-9607630/829-9619}}

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