Event Notification Report for March 16, 2012
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/15/2012 - 03/16/2012
EVENT NUMBERS
47748
Power Reactor
Event Number: 47748
Facility: ROBINSON
Region: 2 State: SC
Unit: [2] [] []
RX Type: [2] W-3-LP
NRC Notified By: WARREN WONKA
HQ OPS Officer: VINCE KLCO
Region: 2 State: SC
Unit: [2] [] []
RX Type: [2] W-3-LP
NRC Notified By: WARREN WONKA
HQ OPS Officer: VINCE KLCO
Notification Date: 03/16/2012
Notification Time: 10:56 [ET]
Event Date: 03/16/2012
Event Time: 04:00 [EDT]
Last Update Date: 03/16/2012
Notification Time: 10:56 [ET]
Event Date: 03/16/2012
Event Time: 04:00 [EDT]
Last Update Date: 03/16/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
EUGENE GUTHRIE (R2DO)
EUGENE GUTHRIE (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | N | 0 | Hot Shutdown | 0 | Hot Shutdown |
REFUELING WATER STORAGE TANK CONNECTED TO AN UNQUALIFIED SYSTEM
"The Refueling Water Storage Tank (RWST) was placed on purification in accordance with [site procedure] OP-913, Refueling Water Purification Pump Operation, as directed from OP-301-1, Chemical and Volume Control System (Infrequent Operation), at 0400 [EDT] on 3/16/2012 to support make up of level to the RWST. This condition, connection of the purification loop, is not currently allowed based on unresolved seismic concerns with purification piping to the RWST. This was later discovered during a log review at 0545, and operators were immediately directed to remove the RWST from purification. ITS 3.5.4 was applied from 0400 based on when it was determined that this condition had been entered. ITS 3.5.4 was exited at 0622 when the RWST was removed from purification.
"This is being reported pursuant to 50.72(b)(3)(v), Event or Condition That Could Have Prevented Fulfillment of a Safety Function."
The licensee notified the NRC Resident Inspector.
"The Refueling Water Storage Tank (RWST) was placed on purification in accordance with [site procedure] OP-913, Refueling Water Purification Pump Operation, as directed from OP-301-1, Chemical and Volume Control System (Infrequent Operation), at 0400 [EDT] on 3/16/2012 to support make up of level to the RWST. This condition, connection of the purification loop, is not currently allowed based on unresolved seismic concerns with purification piping to the RWST. This was later discovered during a log review at 0545, and operators were immediately directed to remove the RWST from purification. ITS 3.5.4 was applied from 0400 based on when it was determined that this condition had been entered. ITS 3.5.4 was exited at 0622 when the RWST was removed from purification.
"This is being reported pursuant to 50.72(b)(3)(v), Event or Condition That Could Have Prevented Fulfillment of a Safety Function."
The licensee notified the NRC Resident Inspector.