Event Notification Report for November 05, 2000
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/04/2000 - 11/05/2000
EVENT NUMBERS
37491374883748937490
Power Reactor
Event Number: 37491
Facility: DIABLO CANYON
Region: 4 State: CA
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DAVE BAHNER
HQ OPS Officer: FANGIE JONES
Region: 4 State: CA
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DAVE BAHNER
HQ OPS Officer: FANGIE JONES
Notification Date: 11/05/2000
Notification Time: 20:44 [ET]
Event Date: 11/05/2000
Event Time: 17:07 [PST]
Last Update Date: 11/05/2000
Notification Time: 20:44 [ET]
Event Date: 11/05/2000
Event Time: 17:07 [PST]
Last Update Date: 11/05/2000
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(ii) - RPS ACTUATION
10 CFR Section:
50.72(b)(2)(ii) - RPS ACTUATION
Person (Organization):
PHIL HARRELL (R4)
PHIL HARRELL (R4)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 0 | Startup | 0 | Hot Standby |
MANUAL REACTOR TRIP ON ROD CONTROL PROBLEM
"Reactor startup was in progress. Power was stabilized at 10E-8 amps in the intermediate range to take critical data. A rod control urgent failure was received when the last rod step was taken to stabilize power. Maintenance was called to investigate. After troubleshooting, a card was replaced in the logic cabinet. Rods were requested to be inserted 1 step after card replacement for post maintenance testing. Rods continued to move in with no demand. Rods inserted 2.5 steps until another urgent failure came in and stopped rod motion. The reactor trip breakers were opened at this time."
All rods fully inserted and all other systems functioned as required. Troubleshooting will continue for the rod control system.
The licensee has notified the NRC Resident Inspector.
"Reactor startup was in progress. Power was stabilized at 10E-8 amps in the intermediate range to take critical data. A rod control urgent failure was received when the last rod step was taken to stabilize power. Maintenance was called to investigate. After troubleshooting, a card was replaced in the logic cabinet. Rods were requested to be inserted 1 step after card replacement for post maintenance testing. Rods continued to move in with no demand. Rods inserted 2.5 steps until another urgent failure came in and stopped rod motion. The reactor trip breakers were opened at this time."
All rods fully inserted and all other systems functioned as required. Troubleshooting will continue for the rod control system.
The licensee has notified the NRC Resident Inspector.
Power Reactor
Event Number: 37488
Facility: DIABLO CANYON
Region: 4 State: CA
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: LAURA KENNEDY
HQ OPS Officer: STEVE SANDIN
Region: 4 State: CA
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: LAURA KENNEDY
HQ OPS Officer: STEVE SANDIN
Notification Date: 11/05/2000
Notification Time: 04:21 [ET]
Event Date: 11/05/2000
Event Time: 00:30 [PST]
Last Update Date: 11/05/2000
Notification Time: 04:21 [ET]
Event Date: 11/05/2000
Event Time: 00:30 [PST]
Last Update Date: 11/05/2000
Emergency Class: NON EMERGENCY
10 CFR Section:
73.71(b)(1) - SAFEGUARDS REPORTS
10 CFR Section:
73.71(b)(1) - SAFEGUARDS REPORTS
Person (Organization):
GAIL GOOD (IAT)
ROBERTA WARREN (IAT)
GAIL GOOD (IAT)
ROBERTA WARREN (IAT)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Hot Standby | 0 | Hot Standby |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
1-HR SECURITY REPORT
POTENTIAL BOMB THREAT. IMMEDIATE COMPENSATORY MEASURE TAKEN UPON DISCOVERY. LICENSEE HAS INFORMED STATE/LOCAL AGENCIES AND WILL INFORM THE NRC RESIDENT INSPECTOR. CONTACT THE HEADQUARTERS OPERATIONS OFFICER FOR ADDITIONAL DETAILS.
POTENTIAL BOMB THREAT. IMMEDIATE COMPENSATORY MEASURE TAKEN UPON DISCOVERY. LICENSEE HAS INFORMED STATE/LOCAL AGENCIES AND WILL INFORM THE NRC RESIDENT INSPECTOR. CONTACT THE HEADQUARTERS OPERATIONS OFFICER FOR ADDITIONAL DETAILS.
Power Reactor
Event Number: 37489
Facility: DIABLO CANYON
Region: 4 State: CA
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DAVID PIERCE
HQ OPS Officer: STEVE SANDIN
Region: 4 State: CA
Unit: [1] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DAVID PIERCE
HQ OPS Officer: STEVE SANDIN
Notification Date: 11/05/2000
Notification Time: 04:39 [ET]
Event Date: 11/05/2000
Event Time: 01:20 [PST]
Last Update Date: 11/05/2000
Notification Time: 04:39 [ET]
Event Date: 11/05/2000
Event Time: 01:20 [PST]
Last Update Date: 11/05/2000
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a)(1)(i) - EMERGENCY DECLARED
10 CFR Section:
50.72(a)(1)(i) - EMERGENCY DECLARED
Person (Organization):
PHIL HARRELL (R4)
STUART RICHARDS (NRR)
JOSEPH GIITTER (IRO)
KEN BROCKMAN (R4)
ELLIS MERSCHOFF (R4)
PHIL HARRELL (R4)
STUART RICHARDS (NRR)
JOSEPH GIITTER (IRO)
KEN BROCKMAN (R4)
ELLIS MERSCHOFF (R4)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Hot Standby | 0 | Hot Standby |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
UNUSUAL EVENT DECLARED DUE TO A POTENTIAL BOMB THREAT
THE LICENSEE DECLARED AN UNUSUAL EVENT DUE TO A POTENTIAL BOMB THREAT. THE LICENSEE INFORMED STATE/LOCAL AUTHORITIES AND WILL INFORM THE NRC RESIDENT INSPECTOR.
THE NRC WAS PLACED IN THE MONITORING PHASE OF THE NORMAL MODE OF OPERATION BY THE RIV RA ( MERSCHOFF) AT 0400CST FOLLOWING DISCUSSIONS WITH IRO (GIITTER) AND THE EO (RICHARDS) . REGION IV INCIDENT RESPONSE CENTER WAS OPERATIONAL AT 0456CST. NOTIFIED CHAIRMAN'S STAFF (TSCHILTZ) , EDO STAFF (SMITH), AND HEADQUARTERS PAO (GAGNER).
* * * 0610EST ON 11/5/00 FROM DAVID PIERCE TO S. SANDIN * * *
THE LICENSEE TERMINATED THE UNUSUAL EVENT AT 0237PST AFTER DETERMINING THAT THE BOMB THREAT WAS NOT CREDIBLE. THE LICENSEE INFORMED STATE/LOCAL AGENCIES AND THE NRC RESIDENT INSPECTOR. RIV IRC AND FEMA (SULLIVAN) NOTIFIED.
* * * 0700EST ON 11/5/00 * * *
COMMISSIONER'S ASSISTANTS BRIEFING CONDUCTED.
* * * 1655 EST ON 11/4/00 * * *
The NRC exited Monitoring Phase of the Normal Mode of Operation by NRC Region 4 Regional Administrator (Ellis Merschoff) following discussion with IRO (Joseph Giitter) and R4 DRP (Kenneth Brockman). Notifications made include EDO's office (Garrett Smith), Chairman's office (Alan Levin), PAO (Sue Gagner).
THE LICENSEE DECLARED AN UNUSUAL EVENT DUE TO A POTENTIAL BOMB THREAT. THE LICENSEE INFORMED STATE/LOCAL AUTHORITIES AND WILL INFORM THE NRC RESIDENT INSPECTOR.
THE NRC WAS PLACED IN THE MONITORING PHASE OF THE NORMAL MODE OF OPERATION BY THE RIV RA ( MERSCHOFF) AT 0400CST FOLLOWING DISCUSSIONS WITH IRO (GIITTER) AND THE EO (RICHARDS) . REGION IV INCIDENT RESPONSE CENTER WAS OPERATIONAL AT 0456CST. NOTIFIED CHAIRMAN'S STAFF (TSCHILTZ) , EDO STAFF (SMITH), AND HEADQUARTERS PAO (GAGNER).
* * * 0610EST ON 11/5/00 FROM DAVID PIERCE TO S. SANDIN * * *
THE LICENSEE TERMINATED THE UNUSUAL EVENT AT 0237PST AFTER DETERMINING THAT THE BOMB THREAT WAS NOT CREDIBLE. THE LICENSEE INFORMED STATE/LOCAL AGENCIES AND THE NRC RESIDENT INSPECTOR. RIV IRC AND FEMA (SULLIVAN) NOTIFIED.
* * * 0700EST ON 11/5/00 * * *
COMMISSIONER'S ASSISTANTS BRIEFING CONDUCTED.
* * * 1655 EST ON 11/4/00 * * *
The NRC exited Monitoring Phase of the Normal Mode of Operation by NRC Region 4 Regional Administrator (Ellis Merschoff) following discussion with IRO (Joseph Giitter) and R4 DRP (Kenneth Brockman). Notifications made include EDO's office (Garrett Smith), Chairman's office (Alan Levin), PAO (Sue Gagner).
Power Reactor
Event Number: 37490
Facility: POINT BEACH
Region: 3 State: WI
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: RICK ROBBINS
HQ OPS Officer: FANGIE JONES
Region: 3 State: WI
Unit: [1] [2] []
RX Type: [1] W-2-LP,[2] W-2-LP
NRC Notified By: RICK ROBBINS
HQ OPS Officer: FANGIE JONES
Notification Date: 11/05/2000
Notification Time: 16:38 [ET]
Event Date: 11/05/2000
Event Time: 14:07 [CST]
Last Update Date: 11/05/2000
Notification Time: 16:38 [ET]
Event Date: 11/05/2000
Event Time: 14:07 [CST]
Last Update Date: 11/05/2000
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(ii) - ESF ACTUATION
10 CFR Section:
50.72(b)(2)(ii) - ESF ACTUATION
Person (Organization):
DAVID HILLS (R3)
DAVID HILLS (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 2 | N | N | 0 | Refueling | 0 | Refueling |
UNEXPECTED AUTOMATIC START OF THE G-03 EDG
"During 2A06 Bus recovery work, from a scheduled bus maintenance outage, there was an automatic start of G-03 Emergency Diesel Generator (EDG). This was an inadvertent actuation and not part of the planned bus recovery work. G-03 EDG started and ran unloaded due to a 4160 Bus under voltage, that was caused by fuse replacement as part of the bus restoration procedure. The G-03 EDG output breaker 2A52-87 is currently out of service as part of the 2A06 bus outage, so the diesel could not have closed onto the dead bus. G-03 EDG was and is still lined up for normal operation to the 1A06 bus. Further investigation is continuing into the root cause of this actuation.
"All buses remained energized and there were no other abnormal indications. Currently Unit 2 is in a refueling outage and is defueled at this time. Unit 1 is at 100% power normal operation."
The sequence of actions taken were wrong in that the fuses were replaced when they should not have been.
The licensee intends to notify the NRC Resident Inspector.
"During 2A06 Bus recovery work, from a scheduled bus maintenance outage, there was an automatic start of G-03 Emergency Diesel Generator (EDG). This was an inadvertent actuation and not part of the planned bus recovery work. G-03 EDG started and ran unloaded due to a 4160 Bus under voltage, that was caused by fuse replacement as part of the bus restoration procedure. The G-03 EDG output breaker 2A52-87 is currently out of service as part of the 2A06 bus outage, so the diesel could not have closed onto the dead bus. G-03 EDG was and is still lined up for normal operation to the 1A06 bus. Further investigation is continuing into the root cause of this actuation.
"All buses remained energized and there were no other abnormal indications. Currently Unit 2 is in a refueling outage and is defueled at this time. Unit 1 is at 100% power normal operation."
The sequence of actions taken were wrong in that the fuses were replaced when they should not have been.
The licensee intends to notify the NRC Resident Inspector.