Event Notification Report for February 17, 2010
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/16/2010 - 02/17/2010
Power Reactor
Event Number: 45706
Facility: SUSQUEHANNA
Region: 1 State: PA
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: MARTIN LICHTNER
HQ OPS Officer: DONALD NORWOOD
Region: 1 State: PA
Unit: [1] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: MARTIN LICHTNER
HQ OPS Officer: DONALD NORWOOD
Notification Date: 02/17/2010
Notification Time: 16:24 [ET]
Event Date: 02/17/2010
Event Time: 14:20 [EST]
Last Update Date: 02/17/2010
Notification Time: 16:24 [ET]
Event Date: 02/17/2010
Event Time: 14:20 [EST]
Last Update Date: 02/17/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
TODD JACKSON (R1DO)
TODD JACKSON (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 86 | Power Operation | 86 | Power Operation |
| 2 | N | Y | 94 | Power Operation | 94 | Power Operation |
NOTIFICATION TO PENNSLYVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION CONCERNING DRINKING WATER QUALITY
"The following is a 4-hour non-emergency notification in accordance with 10CFR50.72(b)(2)(xi), Offsite Notification.
"At 1420, February 17, 2010, Susquehanna LLC notified the Pennsylvania Department of Environmental Protection (DEP) of an issue with the domestic water supply system at the Susquehanna facility. This notification was made via telephone.
"The notification to Pennsylvania DEP was in accordance with 25 PA Code 109.1307 due to circumstances that exist that adversely affect the quality of drinking water. Specifically, no residual chlorine was detectable in the domestic water system. The Pennsylvania DEP contact was the Pennsylvania DEP Sanitarian.
"Required compensatory actions have been initiated, including planned repairs of the domestic water chlorination system."
The licensee notified the NRC Resident Inspector
"The following is a 4-hour non-emergency notification in accordance with 10CFR50.72(b)(2)(xi), Offsite Notification.
"At 1420, February 17, 2010, Susquehanna LLC notified the Pennsylvania Department of Environmental Protection (DEP) of an issue with the domestic water supply system at the Susquehanna facility. This notification was made via telephone.
"The notification to Pennsylvania DEP was in accordance with 25 PA Code 109.1307 due to circumstances that exist that adversely affect the quality of drinking water. Specifically, no residual chlorine was detectable in the domestic water system. The Pennsylvania DEP contact was the Pennsylvania DEP Sanitarian.
"Required compensatory actions have been initiated, including planned repairs of the domestic water chlorination system."
The licensee notified the NRC Resident Inspector
General Information or Other
Event Number: 45722
Rep Org: OCONEE NUCLEAR STATION
Licensee: DUBOSE NATIONAL ENERGY SERVICES, INC.
Region: 1
City: SENECA State: SC
County:
License #:
Agreement: Y
Docket:
NRC Notified By: SANDRA SEVERANCE
HQ OPS Officer: DONG HWA PARK
Licensee: DUBOSE NATIONAL ENERGY SERVICES, INC.
Region: 1
City: SENECA State: SC
County:
License #:
Agreement: Y
Docket:
NRC Notified By: SANDRA SEVERANCE
HQ OPS Officer: DONG HWA PARK
Notification Date: 02/24/2010
Notification Time: 14:44 [ET]
Event Date: 02/17/2010
Event Time: 06:32 [EST]
Last Update Date: 02/24/2010
Notification Time: 14:44 [ET]
Event Date: 02/17/2010
Event Time: 06:32 [EST]
Last Update Date: 02/24/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
21.21 - UNSPECIFIED PARAGRAPH
10 CFR Section:
21.21 - UNSPECIFIED PARAGRAPH
Person (Organization):
BRIAN BONSER (R2DO)
PART 21 GROUP (EMAI)
BRIAN BONSER (R2DO)
PART 21 GROUP (EMAI)
POTENTIALLY DEFECTIVE STUD ATTACHMENT TO EMBEDED PLATES
"On February 17, 2010, Duke Energy (Duke) completed a reportability determination which concluded that a defect associated with Nelson Stud attachment to embed plates is reportable under Part 21. The embed plates with Nelson studs were procured safety-related from DuBose National Energy Services, Inc. (DuBose) on December 18, 2008. Receipt of the material began as early as August 1, 2009. When delivered to the on-site storage location, it was identified that a Nelson Stud was missing from one of the plates. Follow-up investigation and evaluation identified that automatically timed stud welding procedures/process control weaknesses in the areas of cleanliness and operator/equipment performance have resulted in cold weld joints and weld failures. Duke will provide follow up written notification within 30 days pursuant to Part 21.21(d)(3)(ii).
"Initial Safety Significance: None. The potentially defective embedded plates installed in the Protected Service Water (PSW) Building prior to this discovery have not been placed into service. These plates will be removed, abandoned, or re-engineered prior to placing the system in service. However, the embed plates described were to be used for a variety of QA Condition 1 functions, including reaction points for PSW Building structural steel framing and support/restraint of PSW electrical equipment. Depending upon the installation location of these embedded plates and the number and location of ineffectively attached Nelson studs, this deviation could have created a substantial safety hazard were it to remain uncorrected.
"Corrective Action(s):
"1. Notified vendor (DuBose).
"2. Re-work all embeds by installing a fillet weld on each stud.
"3. Determine whether the installed embeds will be removed, abandoned, re-engineered.
The licensee notified the NRC Resident Inspector.
"On February 17, 2010, Duke Energy (Duke) completed a reportability determination which concluded that a defect associated with Nelson Stud attachment to embed plates is reportable under Part 21. The embed plates with Nelson studs were procured safety-related from DuBose National Energy Services, Inc. (DuBose) on December 18, 2008. Receipt of the material began as early as August 1, 2009. When delivered to the on-site storage location, it was identified that a Nelson Stud was missing from one of the plates. Follow-up investigation and evaluation identified that automatically timed stud welding procedures/process control weaknesses in the areas of cleanliness and operator/equipment performance have resulted in cold weld joints and weld failures. Duke will provide follow up written notification within 30 days pursuant to Part 21.21(d)(3)(ii).
"Initial Safety Significance: None. The potentially defective embedded plates installed in the Protected Service Water (PSW) Building prior to this discovery have not been placed into service. These plates will be removed, abandoned, or re-engineered prior to placing the system in service. However, the embed plates described were to be used for a variety of QA Condition 1 functions, including reaction points for PSW Building structural steel framing and support/restraint of PSW electrical equipment. Depending upon the installation location of these embedded plates and the number and location of ineffectively attached Nelson studs, this deviation could have created a substantial safety hazard were it to remain uncorrected.
"Corrective Action(s):
"1. Notified vendor (DuBose).
"2. Re-work all embeds by installing a fillet weld on each stud.
"3. Determine whether the installed embeds will be removed, abandoned, re-engineered.
The licensee notified the NRC Resident Inspector.