Event Notification Report for March 24, 2009
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/23/2009 - 03/24/2009
Fuel Cycle Facility
Event Number: 44939
Facility: HONEYWELL INTERNATIONAL, INC.
Region: 2 State: IL
Unit: [] [] []
RX Type: URANIUM HEXAFLUORIDE PRODUCTION
NRC Notified By: BOB STOKES
HQ OPS Officer: MARK ABRAMOVITZ
Region: 2 State: IL
Unit: [] [] []
RX Type: URANIUM HEXAFLUORIDE PRODUCTION
NRC Notified By: BOB STOKES
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 03/26/2009
Notification Time: 21:16 [ET]
Event Date: 03/24/2009
Event Time: 13:30 [CDT]
Last Update Date: 03/26/2009
Notification Time: 21:16 [ET]
Event Date: 03/24/2009
Event Time: 13:30 [CDT]
Last Update Date: 03/26/2009
Emergency Class: NON EMERGENCY
10 CFR Section:
40.60(b)(1) - UNPLANNED CONTAMINATION
10 CFR Section:
40.60(b)(1) - UNPLANNED CONTAMINATION
Person (Organization):
STEVEN VIAS (R2)
ABY MOHSENI (NMSS)
STEVEN VIAS (R2)
ABY MOHSENI (NMSS)
BUILDING CONTAMINATED DURING MAINTENANCE
The licensee was troubleshooting a green salt filter leg when approximately 100 pounds of green salt was released from a secondary dust collector drop leg pipe. Four personnel were in the area wearing respiratory protection and anti-contamination clothing. The personnel left the area and access was restricted until 1030 on 3/26/2009. The green salt contaminated four floors of the building and the four personnel. Personnel contamination was removed with removal of the anti contamination clothing and subsequent showers. Most of the floor contamination was cleaned within four hours and the remainder was completed on 3/26/2009. No contamination was released outside the building.
The licensee notified the NRC Resident Inspector.
The licensee was troubleshooting a green salt filter leg when approximately 100 pounds of green salt was released from a secondary dust collector drop leg pipe. Four personnel were in the area wearing respiratory protection and anti-contamination clothing. The personnel left the area and access was restricted until 1030 on 3/26/2009. The green salt contaminated four floors of the building and the four personnel. Personnel contamination was removed with removal of the anti contamination clothing and subsequent showers. Most of the floor contamination was cleaned within four hours and the remainder was completed on 3/26/2009. No contamination was released outside the building.
The licensee notified the NRC Resident Inspector.
Power Reactor
Event Number: 45009
Facility: VERMONT YANKEE
Region: 1 State: VT
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: DENNIS MAY
HQ OPS Officer: KARL DIEDERICH
Region: 1 State: VT
Unit: [1] [] []
RX Type: [1] GE-4
NRC Notified By: DENNIS MAY
HQ OPS Officer: KARL DIEDERICH
Notification Date: 04/22/2009
Notification Time: 13:37 [ET]
Event Date: 03/24/2009
Event Time: 13:26 [EDT]
Last Update Date: 04/22/2009
Notification Time: 13:37 [ET]
Event Date: 03/24/2009
Event Time: 13:26 [EDT]
Last Update Date: 04/22/2009
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
PAUL KROHN (R1DO)
PAUL KROHN (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
PRIMARY CONTAINMENT ISOLATION SYSTEM (PCIS) GROUP 3 INVALID ACTUATION
"This sixty day notification is being made in accordance with 10 CFR 50.73(a)(2)(iv)(A) to provide the NRC with information pertaining to an unplanned invalid actuation of specific systems, specifically, a Primary Containment Isolation System (PCIS) Group 3 actuation signal that affected containment isolation valves in more than one system.
"On March 24, 2009, at approximately 1326 hours, Vermont Yankee Nuclear Power Station (VYNPS) experienced an invalid PCIS Group 3 isolation associated with personnel error during quarterly calibration of the Refuel Floor Zone Radiation Monitors. VYNPS had removed the East Refuel Floor Zone Radiation Monitor from service for calibration. The technician, in the field, had completed a phone communication with the control room and was dispatched to the East Refuel Floor Zone Radiation Monitor to perform the calibration activity. However, the technician incorrectly went to the inservice West Refuel Floor Zone Radiation Monitor and removed the detector from service. This incorrect action caused a momentary invalid high radiation signal containment isolation signal and the Subsequent PCIS Group 3 isolation. The following actuations resulted:
"Both trains of the Standby Gas Treatment System started as designed.
"The PCIS functioned properly providing a complete Group 3 isolation valves in the following system actuated as a result of the PCIS Group 3 isolation:
"Drywell Air Purge and Vent,
"Drywell and Suppression Chamber Main Exhaust,
"Suppression Chamber Purge and Vent,
"Containment Air Compressor Suction,
"Exhaust to Standby Gas Treatment,
"Containment Purge Supply and Makeup,
"Containment Air Sampling,
"Air Dilution Subsystem, [and]
"Containment Air Dilution Vent System.
"This event has been entered into VYNPS's corrective action program."
The licensee has notified the NRC Resident Inspector.
"This sixty day notification is being made in accordance with 10 CFR 50.73(a)(2)(iv)(A) to provide the NRC with information pertaining to an unplanned invalid actuation of specific systems, specifically, a Primary Containment Isolation System (PCIS) Group 3 actuation signal that affected containment isolation valves in more than one system.
"On March 24, 2009, at approximately 1326 hours, Vermont Yankee Nuclear Power Station (VYNPS) experienced an invalid PCIS Group 3 isolation associated with personnel error during quarterly calibration of the Refuel Floor Zone Radiation Monitors. VYNPS had removed the East Refuel Floor Zone Radiation Monitor from service for calibration. The technician, in the field, had completed a phone communication with the control room and was dispatched to the East Refuel Floor Zone Radiation Monitor to perform the calibration activity. However, the technician incorrectly went to the inservice West Refuel Floor Zone Radiation Monitor and removed the detector from service. This incorrect action caused a momentary invalid high radiation signal containment isolation signal and the Subsequent PCIS Group 3 isolation. The following actuations resulted:
"Both trains of the Standby Gas Treatment System started as designed.
"The PCIS functioned properly providing a complete Group 3 isolation valves in the following system actuated as a result of the PCIS Group 3 isolation:
"Drywell Air Purge and Vent,
"Drywell and Suppression Chamber Main Exhaust,
"Suppression Chamber Purge and Vent,
"Containment Air Compressor Suction,
"Exhaust to Standby Gas Treatment,
"Containment Purge Supply and Makeup,
"Containment Air Sampling,
"Air Dilution Subsystem, [and]
"Containment Air Dilution Vent System.
"This event has been entered into VYNPS's corrective action program."
The licensee has notified the NRC Resident Inspector.