At 1404 1/15/2008, Central time, Point Beach experienced a loss of Unit
1X-04, Low Voltage Station Auxiliary Transformer. This loss has caused Point Beach to declare an Unusual Event (SU 1.1, Loss of all Offsite Power to essential busses for greater than 15 minutes.)
The loss of Unit 1X-04 transformer is under investigation.
All equipment operated properly with the exception of 1B-04, 'B' train 480 VAC Safeguards Bus, supply breaker opened for unknown reasons.
The licensee notified the NRC Resident Inspector.
Preparations are underway for a Unit 1 shutdown.
Both Unit 1 EDGs are running and supplying Unit 1 safeguard buses. Non-safety buses are powered from an auto transfer that occurred after the loss of 1X-04. No impact on Unit 2 due to the Unit 1 electrical transient. Licensee notified state and local emergency management agencies.
- * * UPDATE FROM DENNY SMITH TO JEFF ROTTON AT 2300 ON 1/15/08 * * *
On 1/15/08 at 1941 central time, FPL Energy Point Beach, LLC issued a press release concerning the Unusual Event at Point Beach that was declared on 1/15/08 at 1415 central time. The Unusual Event was reported under EN 43907 and occurred due to the loss of all offsite power to essential busses for greater than 15 minutes from the failure of the Unit 1 X-04, Low Voltage Station Auxiliary Transformer.
The NRC Resident Inspector has been informed of the press release and this subsequent notification.
- * * UPDATE FROM RICK ROBBINS TO JOE O'HARA AT 1816 EST ON 1/16/08 * * *
At 1404 on 1/15/08 central time, Point Beach experienced a loss of Unit 1 X-04, Low Voltage Station Auxiliary Transformer. This loss caused Point Beach to declare an Unusual Event and that was reported under EN 43907. Technical Specification 3.8.1.B, Associated unit's 13.8/4.16 kv (X04) transformer inoperable, was not met as of 1404 on 1/15/08 and this LCO has a Required Action to restore the (X04) transformer to Operable status with a Completion time of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
At 1404 1/16/08 the LCO was still not met and Unit 1 entered Technical Specification 3.8.1.H Required Action and associated Completion Time Not met, with a required action to be in Mode 3 in 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and Mode 5 in 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.
This Event Notification Worksheet is for the initiation of the Technical Specification Required reactor shutdown that commenced at 1549 on 1/16/08, per 10 CFR 50.72(b)(2)(i).
The licensee notified the NRC Resident Inspector.
Notified R3DO(Stone), NRR EO(Evans), and IRD(Blount).
- * * UPDATE FROM RICK ROBBINS TO JOE O'HARA AT 2222 EST ON 1/16/08 * * *
Update: At 1947 CST on 01/16/08, the Unit 1 reactor reached MODE 3, completing the required Technical Specification Shutdown. Offsite power has been restored to the essential busses by paralleling from Unit 2 4160 V buses and the Emergency Diesel Generators G-01 and G-03 have been placed back to a normal standby alignment. The unit is being taken to MODE 5 in accordance with plant TS requirements.
This update to EN#43907 also reports the termination of the Unusual Event [AT 2035 CST] SU1.1, Loss of all offsite power to essential buses for greater than 15 minutes initially reported via EN#43907. The State of Wisconsin and the counties of Kewaunee and Manitowoc were notified of the termination via the Nuclear Accident Reporting System (NARS) at 2041 on 1/16/08.
The licensee notified the NRC Resident Inspector.
Notified R3DO(Stone), NRR EO(Evans), NRR ET(Dyer), DHS(Gray), FEMA(Dunker), and IRD(Blount).
- * * UPDATE FROM KILE HESS TO BILL HUFFMAN AT 1019 EST ON 1/17/08 * * *
Update: At 0702 CST on 01/17/08, FPL Energy Point Beach, LLC issued a press release regarding the termination of the Unusual Event and the shutdown of Unit 1 for repair of 1- X04 transformer.
The NRC resident inspector was notified of the press release." R3DO (Stone) notified.
