Event Notification Report for May 17, 2000
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
05/16/2000 - 05/17/2000
** EVENT NUMBERS **
36961 37001 37007
!!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!!!!
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|Power Reactor |Event Number: 36961 |
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+------------------------------------------------------------------------------+
| FACILITY: POINT BEACH REGION: 3 |NOTIFICATION DATE: 05/03/2000|
| UNIT: [1] [2] [] STATE: WI |NOTIFICATION TIME: 12:40[EDT]|
| RXTYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 05/03/2000|
+------------------------------------------------+EVENT TIME: 10:45[CDT]|
| NRC NOTIFIED BY: DON POPP |LAST UPDATE DATE: 05/16/2000|
| HQ OPS OFFICER: WILLIAM POERTNER +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |BRUCE BURGESS R3 |
|10 CFR SECTION: | |
|DDDD 73.71 UNSPECIFIED PARAGRAPH | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 N Y 100 Power Operation |100 Power Operation |
|2 N Y 100 Power Operation |100 Power Operation |
| | |
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EVENT TEXT
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| 1 HOUR SECURITY REPORT |
| |
| Unescorted protected area access granted inappropriately. Immediate |
| compensatory measures taken. |
| |
| The licensee will notify the NRC Resident Inspector. |
| |
| Contact the Headquarters Operations Center for additional details |
| |
| * * * RETRACTION ON 05/16/00 AT 1128 ET BY BRAIN KOPETSKI TAKEN BY MACKINNON |
| * * * |
| |
| After further review of this event and conversations with NRC Region 3 this |
| event is being retracted. The event is being made a loggable because the |
| person's access denial would not have in itself been enough to deny |
| access. R3DO (John Madera) notified. |
| |
| The NRC Resident Inspector was notified of this retraction by the licensee. |
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+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 37001 |
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+------------------------------------------------------------------------------+
| FACILITY: DIABLO CANYON REGION: 4 |NOTIFICATION DATE: 05/15/2000|
| UNIT: [1] [] [] STATE: CA |NOTIFICATION TIME: 04:04[EDT]|
| RXTYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 05/15/2000|
+------------------------------------------------+EVENT TIME: 00:43[PDT]|
| NRC NOTIFIED BY: STEVE HACKLEMAN |LAST UPDATE DATE: 05/16/2000|
| HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: UNU |CHARLES CAIN R4 |
|10 CFR SECTION: |JOSE CALVO NRR |
|AAEC 50.72 (a) (1) (I) EMERGENCY DECLARED |JOSEPH GIITTER IRO |
|ARPS 50.72(b)(2)(ii) RPS ACTUATION |EACHES FEMA |
|AESF 50.72(b)(2)(ii) ESF ACTUATION |JOSEPH HIMES RCT |
|NOCM COMM ASST BRIEF | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 A/R Y 100 Power Operation |0 Hot Standby |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| UNUSUAL EVENT DUE TO AUXILIARY TRANSFORMER EXPLOSION & FIRE; LOSS OF OFFSITE |
| POWER - |
| |
| At 0043 PDT on 05/15/00, the licensee declared an Unusual Event due to |
| auxiliary transformer #1-1 exploding and catching on fire. This resulted in |
| the loss of offsite power and an automatic trip of Unit 1. The licensee |
| called the offsite fire department and they responded to the plant. |
| Auxiliary transformer #1-1 is located outside the turbine building (north |
| end). |
| |
| Three of three Unit 1 emergency diesel generators started and loaded and are |
| supplying emergency power to vital Unit 1 buses. Auxiliary transformer #1-1 |
| supplies backup power to Unit 1 emergency buses. The Unit 1 12 KV buses are |
| energized. Unit 1 reactor coolant pumps are running providing forced |
| circulation. |
| |
| Unit 1 automatically tripped from 100% power. All control rods inserted |
| completely. Steam is being dumped to the atmosphere. Unit 1 has no steam |
| generator tube leaks and no fuel leaks. The auxiliary feedwater system |
| automatically started, as expected. A #1-2 steam generator code safety |
| valve failed open for about 25 - 30 minutes about 30 minutes after the |
| reactor trip. The valve is now closed. There was no safety injection |
| actuation. |
| |
| Unit 1 is stable in Mode 3 (Hot Standby). |
| |
| This event had no effect on Unit 2 which is stable at 100% power. |
| |
| The licensee notified state and local officials and the NRC Resident |
| Inspector. |
| |
| At 0143 PDT, the fire is out. No personnel were injured. |
| |
| At 0405 CDT, NRC Region 4 entered the Monitoring Phase of Normal NRC |
| Response Mode. |
| |
| * * * UPDATE AT 0726 ON 05/15/00 FROM MARK LEMKE TO JOLLIFFE * * * |
| |
| The licensee determined that an electrical fault on the low voltage side of |
| auxiliary transformer #1-1 caused extensive damage to the 12 KV buswork and |
| nearby buswork used to supply the Unit 1 4 KV buses from offsite power |
| following a plant shutdown. Auxiliary transformer #1-1 did not explode and |
| is intact. |
| |
| The licensee also determined that there was not a failure of a main steam |
| code safety valve. However, following closure of the main steam isolation |
| valves, a code safety valve on the #1-2 steam generator did lift and did not |
| fully reseat. Plant operators took manual action to lower steam generator |
| pressure, causing the valve to reseat. There was no release of radiation |
| from the plant. |
| |
| The California Department of Forestry responded to the site. |
| |
| The licensee is continuing to investigate the cause of this explosion and |
| has issued a press release. |
| |
| * * * AT 0900 ON 05/15/00 COMMISSIONERS' ASSISTANTS BRIEFING * * * |
| |
| IRO (Frank Congel, Joe Giitter); NRR Projects (Steve Dembek); OPA (Bill |
| Beecher); OSP (Cardelia Maupin); IP (Howard Faulkner); CA (Tom Combs); |
| Chairman Meserve Asst (Mike Tschiltz); Comm Dicus Asst (Joe Olencz); Comm |
| McGaffigan Asst (Jeff Sharkey); Comm Diaz Asst (Tony Hsia); Comm Merrifield |
| Asst (John Thoma); NRR (Ed Goodwin); R4 (Elmo Collins [Briefer], Bill Jones, |
| et al). |
| |
| * * * UPDATE AT 1358 EDT ON 5/16/00 BY D. PETERSON TO FANGIE JONES * * * |
| |
| The licensee terminated the Unusual Event at 0959 PDT. Offsite power has |
| been restored to the 4 KV vital busses. The diesel generators have been |
| shutdown. The RCS temperature is 380 �F and pressure is 920 psig. The |
| plant will continue to Cold Shutdown after chemistry hold is complete. |
| |
| The licensee notified the NRC Resident Inspector. The NRC Headquarters |
| Operation Officer notified the R4DO (Bill Jones), IRO (Joseph Giitter), NRR |
| (William Beckner), EDO Office (Mark Satorius), PAO (Sue Gagner), FEMA |
| (Austin). |
| |
| NRC Region 4 exited the Monitoring Phase of Normal Mode at 1414 EDT. |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 37007 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SUMMER REGION: 2 |NOTIFICATION DATE: 05/16/2000|
| UNIT: [1] [] [] STATE: SC |NOTIFICATION TIME: 07:28[EDT]|
| RXTYPE: [1] W-3-LP |EVENT DATE: 05/15/2000|
+------------------------------------------------+EVENT TIME: 09:30[EDT]|
| NRC NOTIFIED BY: CHUCK McKINNEY |LAST UPDATE DATE: 05/16/2000|
| HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |BRIAN BONSER R2 |
|10 CFR SECTION: | |
|HFIT 26.73 FITNESS FOR DUTY | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 N Y 100 Power Operation |100 Power Operation |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| 24 HOUR FITNESS FOR DUTY EVENT - |
| |
| At 0930 on 05/15/00, a licensee supervisor tested positive for alcohol |
| during a random drug and alcohol test. The licensee withdrew the employee's |
| access authorization to the plant protected area after verification of the |
| positive test. The licensee is determining further corrective actions. |
| |
| The licensee notified the NRC Resident Inspector. |
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Page Last Reviewed/Updated Thursday, March 25, 2021