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Event Notification Report for November 20, 2007

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
11/19/2007 - 11/20/2007

** EVENT NUMBERS **


43785 43791

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General Information or Other Event Number: 43785
Rep Org: CALIFORNIA RADIATION CONTROL PRGM
Licensee: STORK MATERIALS TESTING AND INSPECTION
Region: 4
City: RANCHO DOMINGUEZ State: CA
County:
License #: 1880-19
Agreement: Y
Docket:
NRC Notified By: BARBARA HAMRICK
HQ OPS Officer: PETE SNYDER
Notification Date: 11/15/2007
Notification Time: 13:27 [ET]
Event Date: 11/06/2007
Event Time: [PST]
Last Update Date: 11/15/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
VIVIAN CAMPBELL (R4)
GREG MORELL (FSME)

Event Text

AGREEMENT STATE REPORT - DISCONNECTED RADIOGRAPHY CAMERA SOURCE

On November 6, 2007, a radiography camera source was found by licensee personnel to be disconnected from the camera. The Assistant Radiation Safety Officer was notified, reported to the site and retrieved the source into a source changer for safe transport back to the licensee's facility. The camera contained a 69 curie Ir-192 source.

The State of California is following up on this incident.

CA identification number: 110807.

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Power Reactor Event Number: 43791
Facility: BRUNSWICK
Region: 2 State: NC
Unit: [1] [ ] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: MARK TURKAL
HQ OPS Officer: JOE O'HARA
Notification Date: 11/19/2007
Notification Time: 10:38 [ET]
Event Date: 09/21/2007
Event Time: 13:10 [EST]
Last Update Date: 11/19/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
GEORGE HOPPER (R2)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 23 Power Operation 23 Power Operation

Event Text

INVALID ACTUATION OF EMERGENCY DIESEL GENERATORS

"This telephone notification is being made in accordance with 10CFR50.73(a)(1) to report an invalid actuation of the Emergency Diesel Generators (EDGs) reportable under 10CFR50.73(a)(2)(iv)(A).

"On September 21, 2007, at approximately 1310 EDT, while Operators were in the process of synchronizing the main turbine generator, a Generator Field Overexcitation trip occurred due to a failed transistor on the manual voltage regulator circuit board. This resulted in a primary and backup generator lockout and turbine trip. All four EDG's started and operated as expected. Because electrical power was never lost to the emergency buses and none of the EDGs loaded onto their respective emergency buses, the actuations were considered to be partial. The EDGs were returned to their standby line-up by 1615 on September 21, 2007. Since no actual bus undervoltage condition existed which required the EDG's to start and the start occurred inadvertently as a result of a single component failure, this event has been classified as an invalid actuation.

"This invalid EDG start event was entered into the corrective action program (i.e., NCR 247573)

"Initial Safety Significance Evaluation - The safety significance is considered to be minimal. The EDGs started and operated normally. Offsite electrical power to the Emergency buses was never lost.

"Corrective Actions - The main turbine generator manual voltage regulator circuit board was replaced."

The licensee notified the NRC Resident Inspector.

Page Last Reviewed/Updated Thursday, March 29, 2012
Thursday, March 29, 2012