| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
07/19/2013 - 07/22/2013 ** EVENT NUMBERS ** |
 | Power Reactor | Event Number: 49188 | Facility: DRESDEN
Region: 3 State: IL
Unit: [ ] [2] [3]
RX Type: [1] GE-1,[2] GE-3,[3] GE-3
NRC Notified By: JON PILLION
HQ OPS Officer: MARK ABRAMOVITZ | Notification Date: 07/14/2013
Notification Time: 16:29 [ET]
Event Date: 07/14/2013
Event Time: 16:00 [CDT]
Last Update Date: 07/19/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
JULIO LARA (R3DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | Y | 100 | Power Operation | 100 | Power Operation | | 3 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text TECHNICAL SUPPORT CENTER OUT OF SERVICE FOR PLANNED PREVENTATIVE MAINTENANCE
"At 1600 CDT on Sunday, July 14, 2013, the Dresden Nuclear Power Station (DNPS) Technical Support Center (TSC) emergency ventilation system will be removed from service for planned preventative maintenance activities on the TSC air handling unit and air compressor units. During the maintenance, the TSC ventilation will be shut down. The TSC air filtration fan and dampers will be non-functional, rendering the TSC HVAC accident mode non-functional. This maintenance is scheduled to minimize out of service time. The planned TSC ventilation outage is scheduled to be completed within 48 hours. Contingency plans are in place so that if an emergency is declared requiring TSC activation during this period, the TSC will be staffed and activated using existing EP (Emergency Preparedness) procedures and checklists. If radiological or environmental conditions require TSC facility evacuation during ventilation system restoration, the Station Emergency Director will evacuate and relocate the TSC staff in accordance with station procedures.
"The NRC Resident Inspector has been notified."
* * * UPDATE AT 1056 EDT ON 7/17/13 FROM PILLION TO HUFFMAN * * *
"The planned TSC ventilation outage, for maintenance activities on the TSC air handling unit and air compressor units, has been extended and is now scheduled to complete on Saturday, July 20, 2013. During this maintenance, the TSC air filtration fan and dampers will continue to be non-functional."
The licensee has notified the NRC Resident Inspector. R3DO (Hills) has been notified.
* * * UPDATE FROM MATT KERCHENFAUT TO DONALD NORWOOD AT 1905 EDT ON 7/19/13 * * *
"At 1135 CDT on July 19, 2013, Dresden TSC ventilation was restored. The Dresden TSC ventilation is functional at this time.
"The NRC Resident Inspector has been notified."
Notified R3DO (Hills). |
| Power Reactor | Event Number: 49193 | Facility: COLUMBIA GENERATING STATION
Region: 4 State: WA
Unit: [2] [ ] [ ]
RX Type: [2] GE-5
NRC Notified By: DAVID HOLICK
HQ OPS Officer: PETE SNYDER | Notification Date: 07/16/2013
Notification Time: 07:48 [ET]
Event Date: 07/16/2013
Event Time: 04:30 [PDT]
Last Update Date: 07/20/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
RYAN LANTZ (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text MAINTENANCE ON TECHNICAL SUPPORT CENTER / OPERATIONS SUPPORT CENTER VENTILATION
"Scheduled maintenance of the Technical Support Center (TSC) / Operations Support Center (OSC) HVAC system for replacement of charcoal filters started at 0430 hours [PDT] on 7/16/13 and will last approximately 37 hours (estimated time from equipment tag out back to OPERABLE). During this time the TSC and OSC will not be available for use to support emergency response activities. Established compensatory measures direct Emergency Response Organization (ERO) members normally responding to either of these facilities to respond to alternate locations. No other emergency response facilities are impacted by the scheduled TSC / OSC Facilities HVAC maintenance work.
"This event is being reported as a loss of emergency preparedness capabilities in accordance with 10 CFR 50.72(b)(3)(xiii). The NRC Resident Inspector has been notified. A follow up notification will be made when HVAC maintenance to the TSC / OSC Facilities has been completed and operability of these EP Facilities has been restored."
* * * UPDATE RECEIVED FROM RYAN OAKES TO JOHN SHOEMAKER AT 2359 EDT, ON 7/19/13 * * *
"This is a follow-up courtesy notification to EN# 49193. Scheduled maintenance of the Technical Support Center (TSC) / Operations Support Center (OSC) HVAC system for replacement of charcoal filters started at 0430 [PDT] on 7/16/13. Difficulty was experienced in system testing that resulted in exceeding the original estimate of 37 hours. Maintenance to the TSC / OSC Facilities has been completed as of 2001 July 19, 2013 and operability of these EP Facilities has been restored.
"The licensee has notified the NRC Resident Inspector."
Notified R4DO (Miller). |
| Part 21 | Event Number: 49205 | Rep Org: NATIONAL TECHNICAL SYSTEMS
Licensee: YOKOGAWA
Region: 1
City: ACTION State: MA
County:
License #:
Agreement: Y
Docket:
NRC Notified By: STEVEN EISENBERG
HQ OPS Officer: DANIEL MILLS | Notification Date: 07/19/2013
Notification Time: 13:41 [ET]
Event Date: 07/16/2013
Event Time: [EDT]
Last Update Date: 07/19/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
21.21(d)(3)(i) - DEFECTS AND NONCOMPLIANCE
| Person (Organization):
HAROLD GRAY (R1DO)
EUGENE GUTHRIE (R2DO)
DAVID HILLS (R3DO)
GEOFFREY MILLER (R4DO)
PART 21 REACTORS ()
| Event Text PART 21 FIRMWARE NOTICE FOR USERS OF YOKOGAWA DX1000N AND DX2000 MODEL RECORDERS
"This letter is to inform you of a potential Yokogawa data recorder lock-up condition that under specific circumstances may occur on Yokogawa DX Advanced DX1000N and DX2000 models equipped with firmware versions 3.01 through 4.14. These recorders were bought commercially from Yokogawa by National Technical Systems (NTS) and dedicated as basic components for nuclear safety related service.
"The lock-up condition only impacts recorders when utilizing a 'custom trend display' option. There is no lock-up concern with these models when standard display screens are in use or on models using firmware versions earlier than R3.01. While NTS has not received any notification this lock-up condition occurred on a safety related recorder, please see the below description of the error and the appropriate corrective measures.
"Background:
Public Service Electric and Gas - Hope Creek NPP notified NTS and Yokogawa of a lock up condition which occurred on a newly installed non-safety data recorder in their simulator. Yokogawa studied the condition and notified NTS on June 14, 2013 that a firmware error occurs during a specific set of operating conditions and sequence of events and was identified as the root cause of the recorder lock up condition. While these conditions are highly unlikely in an operating plant because under normal practice the internal memory on the recorder would not be cleared, the recorder will lock-up if the below setup conditions occur simultaneously:
"1. A 'Custom Display' that uses a trend screen is active and visible.
2. There is no trend data stored in memory (blank trend screen); this is the condition following a 'Clear 3' initialize.
3. A 'Second Speed' function is invoked via remote input activation (requires / R1 option) or front panel key activation. This is called 'Trend rate switching' a function enabled in Basic Setting Mode that allows the trend update time/division to switch between two separate speeds.
"Corrective Action:
This error only affects recorders if 'Custom Display' is being utilized. If this feature is not being used, no immediate action needs to be taken. If custom screens exist, then please utilize the recommendations below and update firmware when the new version (4.19) becomes available in August 2013.
"A short-term countermeasure is to follow the Yokogawa operational procedure of starting to record data immediately after invoking a 'Clear 3' initialize, and then waiting for at least one trend update to occur (Display data save) before invoking a 'Second Speed' change action.
"Should a lock-up condition occur, as indicated by a freeze of the display clock, the recorder simply needs to be powered off and re-started. The recorder will continue to function properly.
"Based on the above, the nuclear utilities need to be notified concerning this deviation so an evaluation may be performed to determine if this constitutes a defect that could create a substantial safety hazard. NTS cannot make this determination as only the effected utilities know the way the recorders are configured and utilized.
"The attached list contains the nuclear power plants which have been provided DX Advanced safety related Yokogawa recorders with firmware versions 3.01 and above by NTS. NTS has notified these utilities of the above condition via e-mail on July 16, 2013.
"CENG - Nine Mile
Dominion - Surry Station
Dominion - North Anna
Entergy - Arkansas Nuclear One
Entergy - Fitzpatrick
Entergy - Pilgrim Nuclear Station
Entergy - River Bend
Exelon - Braidwood Warehouse
Exelon - Byron
Exelon - Dresden Station
Exelon - Limerick Generating Station
Exelon - Quad Cities
First Energy - Perry Plant
Florida Power & Light - St. Lucie
Georgia Power - Vogtle Plant
AEP - DC Cook
Nebraska Public Power - Cooper
NextEra Energy - Duane Arnold
Omaha PPD - Fort Calhoun
Entergy - Palisades
Progress Energy - H.B. Robinson Plant
PSE&G - Salem/Hope Creek
Edison - San Onofre
STP Nuclear Operating Company
TVA - Sequoyah Station
Wolf Creek Nuclear Operating Corp.
Xcel Energy - Prairie Island Nuclear" |
| Power Reactor | Event Number: 49208 | Facility: BROWNS FERRY
Region: 2 State: AL
Unit: [1] [ ] [ ]
RX Type: [1] GE-4,[2] GE-4,[3] GE-4
NRC Notified By: TODD CHRISTENSEN
HQ OPS Officer: DONALD NORWOOD | Notification Date: 07/20/2013
Notification Time: 12:56 [ET]
Event Date: 07/20/2013
Event Time: 04:38 [CDT]
Last Update Date: 07/20/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
| Person (Organization):
EUGENE GUTHRIE (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text HPCI SYSTEM DECLARED INOPERABLE
"During performance of 1-SR-3.3.5.1.3(D), 'High Pressure Coolant Injection System Condensate Header Low Level Switch Calibration and Functional Test,' the High Pressure Coolant Injection (HPCI) system was declared inoperable due to exceeding the allotted 1 hour time frame for instrument inoperability of 1-LS-073-0056A and 1-LS-073-0056B [low condensate storage tank (CST) level HPCI suction transfer switches]. The HPCI system was declared inoperable in accordance with technical specification (TS) 3.3.5.1 Condition D.1. Condition D of TS 3.3.5.1 is required to be entered during performance of this surveillance. The surveillance disables the automatic CST to Torus suction path transfer function of the HPCI system by booting relay contacts in order to perform a functional test of referenced switches. The 1 hour completion time of TS 3.3.5.1 required by action D.1 was exceeded due to issues with associated test equipment. This constitutes an unplanned HPCI system inoperability and requires an 8 hour NRC notification per 10CFR50.72(b)(3)(v)(D). HPCI remained available for automatic and manual injection during this time period.
"The HPCI system was declared inoperable at 0438 CDT on 7/20/13 and operability (CST to Torus suction transfer function) was restored at 0454 CDT on 7/20/13.
"The NRC resident inspector has been notified."
The level switches (suction transfer switches) had been taken out-of-service for calibration and testing at 0338 CDT on 7/20/13. | |