Event Notification Report for December 29, 2010

INVALID SYSTEM ACTUATION DUE TO OPERATOR ERROR

"This report is being made per paragraphs 50.73(a)(1) and 50.73(a)(2)(iv)(A) to address an actuation of Emergency Diesel Generator 'A' on 12/29/10 while performing a Diesel Generator shutdown. Emergency AC Electrical Power system including Emergency Diesel Generators is a system named in 50.73(a)(2)(iv)(6).

"Emergency Diesel Generator 'A' was coasting down following a normal shutdown in accordance with steps in a routine surveillance test procedure. A manual reset was performed prior to verification that the generator had stopped rolling causing it to return to idle speed and continue to run. A procedure compliance error occurred during the conduct of the test. The control room individual did not request verification that the diesel generator had stopped rolling prior to pushing the reset pushbuttons. This is considered an INVALID signal with respect to 50.73(a)(2)(iv)(A). However the system was not fully removed from service [i.e. the diesel was not considered to be in a testing mode at the time of the event]. The re-start only affected Emergency Diesel Generator 'A'.

"Specific information required per NUREG-1022:
"a. The specific train(s) and system(s) that were actuated: The specific train(s) .and system(s) was Emergency Diesel Generator 'A'. The 'B' train was not affected by this event.
"b. Whether each train actuation was complete or partial: The actuation was considered complete (i.e. all necessary components responded to the reset signal as expected under the actual field conditions).
"c. Whether or not the system started and functioned successfully: Emergency Diesel Generator 'A' started and operated successfully until secured by Operations personnel.

"The licensee notified the NRC Resident Inspector."

SCHEDULED MICROWAVE RADIO MAINTENANCE IMPACT TO THE CCNPP CONTROL ROOM AND EMERGENCY OPERATIONS FACILITY

"This is an eight hour report per 10 CFR 50.72 (b)(3)(xiii). Calvert Cliffs Nuclear Power Plant (CCNPP) will be implementing a scheduled maintenance to the microwave radio system to improve reliability of the system at the Emergency Operations Facility (EOF), State and County facilities.

"This work will require that the microwave radio system at the EOF be removed for a period of approximately 6 to 8 hours. During this time, the following systems will be impacted for the duration of maintenance:

1. The plant's (e.g., Control Room, Technical Support Center (TSC), Simulator) Dedicated Offsite Agency telephones will be out of service. (EOF's system will continue to function)

2. 800 MHz desk set radios at the EOF only will be out of service.

3. 153.44 MHz frequency at the EOF only will be out of service. (backup for MEMA and MDE)

4. MIDAS Terminal (Meteorological Data) located in the Dose Assessment Office at the EOF will be out of service.

5. TSC Computer data transfer to the EOF only will be out of service.

"Once the scheduled maintenance starts the systems (listed above) can be returned to service within 1 hour.

"Should an emergency be declared during this period, the Control Room will continue to have the capability to make the notification to the offsite agencies using the direct line for the appropriate agencies. The Emergency Preparedness communications procedure provides a chart listing the communication devices available and the order in which the process is to be implemented. MIDAS (Meteorological Data) will continue to be operational at the site and can be obtained by contacting the Control Room or TSC. The ERPIPs also provide a backup process and the instructions necessary for the EOF Dose Assessment Office to obtain Meteorological Data. Plant data can be obtain from the CR or TSC and will continue to be downloaded from the plant computer to the ERO SharePoint site.

"All work associated with this microwave radio maintenance will be performed in an expeditious manner consistent with the goal of minimizing unavailability of the systems listed above. A test of all systems will be performed at the completion of the maintenance.

"All EOF responders and Control Room personnel have been briefed on this work and expected contingent actions.

"This job will start on Wednesday, December 29, 2010 at approximately 8:00 am. We anticipate that all work will be completed by 4:00 pm on the same day, including testing of the system. We will provide a notification update upon completion of the job."

The licensee informed the NRC Resident Inspector. Licensee will also notify state and local governments.

* * * UPDATE FROM DAN GENEVA TO JOE O'HARA AT 1405 ON 12/29/10 * * *

Communications are back in full service as of 1220 on 12/29/10.

Notified R1DO(Hansell)

STOLEN TROXLER MOISTER DENSITY GAUGE

A company employee was robbed, at gunpoint, of his car which contained a Troxler moisture density gauge in the trunk. The employee works for MT Operating of NJ, LLC, and was unable to return the gauge to the normal company storage area in Wallingford, CT., at the end of the day. The employee began working a second job in Bloomfield, CT, where the robbery took place. The employee was also robbed of his cell phone and wallet, in addition to his car containing the gauge.

The nuclear gauge is a Troxler Model 3411B, S/N 4783, which contains two radioactive sources. One source is 40 mCi of Am-241/Be and the other source is 8 mCi of Cs-137.

The licensee has notified the Bloomfield Connecticut Police Department to investigate the theft (case # 10-26288).

The licensee has other company employees searching the area in an attempt to locate the missing vehicle.

The licensee plans to make a press release and offer a cash reward.

* * * UPDATE ON 12/30/10 AT 2200 EST FROM PENNISI TO HUFFMAN * * *

The licensee states the Bloomfield Police Department has recovered the Troxler gauge. The circumstances of the recovery are not yet known, however, the gauge appears to be undamaged. Officials from the State of Connecticut have surveyed the gauge and determined found no evidence of unusual radiation levels. The gauge is in Police custody.

R1DO (Hansell), FSME (Watson) and ILTAB (Johnson via email) notified.

* * * UPDATE ON 12/30/10 AT 2300 EST FROM PENNISI TO SNYDER * * *

State of Connecticut informed the NRC Operations Center that the Troxler has been turned over to the licensee's RSO.

R1DO (Hansell), FSME (Watson) and ILTAB (Johnson via email) notified.


THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf