Event Notification Report for April 06, 2007

OFFSITE NOTIFICATION - SPILL OF MOLYBDATES FROM CCW.

"This is a non-emergent event.

"At 1600 EDT, Unit 5 (conventional Co-Generation plant) reported to Florida state agencies a spill of their Closed Cooling Water due to a failure of a system valve. The magnitude of the spill was approximately 2500 gal of cooling water which contained Molybdates. The water was contained in the site's normal drain system.

"Agencies notified:
Florida State Warning Point
Florida Department of Environmental Protection - District
Florida Department oh Environmental Protection - District Citing Office

"The actual event occurred at 0822. Turkey Point Control Room was informed of the notification at 1610."


The licensee will notify the NRC Resident Inspector.

MAIN GENERATOR TRANSFORMER EXPLOSION - NO IMPACT ON PLANT SAFETY RELATED SYSTEMS

At 1143 on 4/6/07 the licensee declared an Unusual Event due to a main transformer explosion in the protected area. The event was declared in accordance with EAL 8.2.2. Unit 3 automatically tripped due to a load reject at the main generator. The Unit is currently stable at normal operating temperature and pressure. Decay heat is being removed via the steam dumps to the main condenser. All emergency diesel generators are available if needed but safety buses are currently supplied with offsite power.

At the transformer site the deluge system actuated and the fire brigade responded. The fire was out at the time of the report

The licensee informed the NRC Resident Inspector.

* * * UPDATE AT 1232 ON 4/6/07 FROM LAUGHLIN TO HUFFMAN * * *

The offsite local fire department was called by the licensee but their support was not needed and they were released.

* * * UPDATE AT 1259 ON 4/6/07 FROM LAUGHLIN TO HUFFMAN * * *

The licensee exited Unusual Event at 1247 based on the fact that the fire was confirmed to be extinguished, there was no damage to safety equipment and the plant was in a safe and stable condition.

* * * UPDATE AT 1440 ON 4/6/07 FROM PRUSSMAN TO KNOKE * * *

"On April 6 at 1143 hours, an unusual event was declared based on Emergency Action Level 8.2.2, an explosion in the 'B' phase of the 31 main transformer. This is a one hour reportable event to the NRC made at 1159 hours. This is an update of EN 43285. The NUE was terminated at 1247 hours.

"The State and County were also notified of the unusual event. A press release was made. Although no one was injured as a result of this event, a four hour report is being made since this is related to on-site personnel safety. The main generator tripped and this resulted in a consequential reactor trip. The Reactor Protection System shut down the reactor at 1109 hours, a four hour report. The plant operated as designed and the Auxiliary Feedwater System actuated, an eight hour report. The fire was reported to the Control Room at 1111 hours. The fire was put out in less than 15 minutes.

"The event is currently under investigation."

The header information in this event was revised as a result of this update to indicate 'Offsite Notification.'

CERTAIN MODEL 1152 PRESSURE TRANSMITTERS MAY LEAK ABOVE 2000 PSI PROCESS PRESSURE

Model 1152 pressure transmitters shipped to facilities between June 12, 2006 and December 20, 2006 may exhibit leakage from a threaded connection interface between the flange and the vent/drain valve seat if subjected to a process pressure greater than 2000 psi. Consequently, performance to published hydrostatic test specifications, or sealing at the maximum working pressures above 2000 psi cannot be assured.

The following potentially affected utilities were identified: Ameren UE, Alabama Power Co., Detroit Edison Co., Dominion, Entergy, Exelon Generation Co., First Energy Corp., FPL Duane Arnold LLC, Georgia Power Co., Nuclear Management Co., Omaha Public Power District, Pacific Gas and Electric, Pennsylvania Power and Light Co., Progress Energy Florida Inc., South Carolina Electric and Gas, and Tennessee Valley Authority.