Semantic search
| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 56359 | 6 February 2023 11:30:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Communications and Assessment Capabilities | The following information was provided by Constellation via email: On 02/06/2023 at 0416 EST, the Constellation Emergency Response Organization (ERO) Notification Database System uploaded data files into the Mass Notification System (Everbridge) which is used to notify ERO personnel when activated. At 0630, the individual reviewing the uploaded files discovered that the data files did not upload properly and that Everbridge may not notify all ERO individuals within the required 10 minutes of system initiation. Constellation resolved the issue by 0752. During the time period of 0416 to 0752, control room operators would have been unaware that the ERO notification was not successful. Therefore, this issue constitutes a loss of offsite communications capability and is reportable under 10 CFR 50.72(b)(3)(xiii), 'The licensee shall notify the NRC as soon as practical and in all cases within eight hours of the occurrence of any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability (e.g., significant portion of control room indication, Emergency Notification System, or offsite notification system).' This loss of offsite communications capability affected all Constellation nuclear stations. There was no impact on the health and safety of the public or plant personnel. Each affected station NRC Resident Inspectors have been or will be notified. | ||
| ENS 52096 | 18 July 2016 11:30:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Offsite Communications Capability | This 8-hour non-emergency report is being made based upon requirements of 10 CFR 50.72(b)(3)(xiii) which states, 'The licensee shall notify the NRC as soon as practical and in all cases within eight hours of the occurrence of any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability (e.g., significant portion of control room indication, Emergency Notification System, or offsite notification system).' On 07-18-2016 at 0730 (EDT), both Control Rooms were notified by the Emergency Preparedness Manager, that the Everbridge Emergency Response Organization (ERO) Notification System may not notify all ERO individuals within the required 10 minutes of system initiation. This constitutes a loss of offsite communications capability. The Everbridge vendor is working to resolve the issue. Compensatory measures are in place. All ERO personnel received the page but not all received the notification within the required ten minutes. The licensee notified the NRC Resident Inspector and the State.
The Everbridge System was restored and retested at 1930 EDT on 7-19-2016 to provide offsite communications capability. The licensee notified the NRC Resident Inspector and the state. Notified the R1DO (DeFrancisco). | ||
| ENS 50216 | 20 June 2014 05:10:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Radiation Monitors Declared Non-Functional | At 0110 (EDT) on June 20, 2014, Nine Mile Point Unit 2 lost communication to the DRMS (Digital Radiation Monitor System Computer). The DRMS provides the Control Room alarm functions for Offgas Pretreatment Process Radiation Monitors 2OFG-CAB13A/13B and Cooling Tower Blowdown Effluent Radiation Monitor 2CWS-CAB157. Due to the loss of the Control Room alarm function, 2OFG-CAB13A, 2OFG-CAB13B, and 2CWS-CAB157 have been declared non-functional. Compensatory measures (i.e. collect and analyze grab samples) have been implemented per the requirements of the Offsite Dose Calculation Manual (ODCM). The non-functional radiation monitors are necessary for accident assessment and are credited for Emergency Action Level (EAL) classification. The inability to classify an EAL due to the out of service radiation monitors is considered a loss of assessment capability per 10 CFR 50.72(b)(3)(xiii). The NRC Resident Inspector has been notified. The licensee has notified the State.
At 1208 (EDT) on June 21, the DRMS was declared functional. With the alarm functions restored, radiation monitors 2OFG-CAB13A, 2OFG-CAB13B, and 2CWS-CAB157 were declared functional and compensatory actions per the ODCM have been discontinued. The licensee notified the NRC Resident Inspector and the State of New York. Notified R1DO (Bickett). .. . . | ||
| ENS 50130 | 22 May 2014 06:10:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Unplanned Isolation of Reactor Building Ventilation Radiation Monitor | At 0210 (EDT) on May 22, 2014, Nine Mile Point Unit 2, the reactor building vent radiation monitor (Vent WRGMS) was removed from service due to a problem with the check source. The unplanned isolation of Vent WRGMS is a 8-hour report for 10 CFR 50.72(b)(3)(xiii), any event that results in a major loss of emergency assessment capability. Until the equipment is restored, Chemistry will perform sampling requirements per the ODCM. The NRC Resident Inspector has been notified. The licensee notified the State of New York Public Service Commission. | Reactor Building Ventilation | |
| ENS 49996 | 4 April 2014 12:00:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Wide Range Gaseous Monitoring System Removed from Service for Greater than 72 Hours | Nine Mile Point Unit 2 Ventilation Wide Range Gaseous Monitoring System was removed from service on 4/1/2014 at 1140 EDT to support isolation of the Unit 2 Reactor Building Ventilation during a Division 2 electrical bus outage. The monitoring system will be out of service for greater than 72 hours due to the planned maintenance window. NMP2 is in Mode 5, refueling. Compensatory actions remain in effect in accordance with the Off-Site Dose Calculation Manual. Expected return to service is 4/5/14. This event is being reported in accordance with 10 CFR 50.72 (b)(3)(xiii) due to a loss of assessment capability. The licensee notified the NRC Resident Inspector. | Reactor Building Ventilation | |
| ENS 49948 | 24 March 2014 04:31:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material | Secondary Containment Inoperable and Unplanned Isolation of the Reactor Building Vent Radiation Monitor | At 0031 (EDT) on March 24, 2014, Nine Mile Point Unit 2 was lowering power for the planned refueling outage. The loss of reactor building heating resulted in the isolation of the reactor building to maintain building temperature. Isolation of the reactor building resulted in the isolation of the reactor building vent radiation monitor (Vent WRGMS) which is a loss of emergency assessment capability. The isolation of the reactor building also resulted in declaring secondary containment inoperable due to secondary containment differential pressure being positive. Secondary containment was declared operable at 0034 (EDT) when differential pressure was restored to greater than negative 0.25 inches water gauge. Secondary containment being inoperable is a 8-hour report for 10 CFR 50.72(b)(3)(v)(c), any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident. The unplanned isolation of Vent WRGMS is a 8-hour report for 10 CFR 50.72(b)(3)(xiii), any event that results in a major loss of emergency assessment capability. The NRC Resident Inspector has been notified. The licensee will notify the New York Public Service Commission. | Secondary containment | |
| ENS 49906 | 12 March 2014 18:22:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material | Secondary Containment Inoperable and Unplanned Isolation of Building Vent Radiation Monitor | At 1422 EDT on March 12, 2014, Nine Mile Point Unit 2 declared secondary containment inoperable due to secondary containment differential pressure being positive. The positive differential pressure was related to sustained high winds from the northeast associated with Winter Storm Vulcan. The reactor building was isolated at 1630 EDT and secondary containment declared operable at 1700 EDT when Secondary Containment Vacuum was restored to greater than 0.25 inch of vacuum water gauge. The isolation of the reactor building resulted in the isolation of the reactor building vent rad monitor (Vent WRGMS (Wide Range Gas Monitors)) which is a loss of emergency assessment capability. Secondary containment being inoperable is an 8-hour report for 10 CFR 50.72(b)(3)(v)(c), 'Any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to control radioactive release.' The unplanned isolation of the Vent WRGMS is an 8-hour report for 10 CFR 50.72(b)(3)(xiii), 'Any event that results in a major loss of emergency assessment capability.' The NRC Resident Inspector has been informed. The licensee will notify the state. | Secondary containment | 05000410/LER-2014-005 |
| ENS 49868 | 4 March 2014 06:43:00 | 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Unit 2 Manual Reactor Scram Following Loss of a Uninterruptible Power Supply (Ups) | At 0137 EST Nine Mile Point Unit 2 experienced a loss of an uninterruptible power supply 2VBB-UPS3B which resulted in a half scram and half isolations. This caused a loss of cooling water to the Reactor Recirculation Pumps and other indications for the loss of power. At 0143 EST a Manual Reactor Scram was inserted due to the rise of temperatures on the Reactor Recirculation Pump seal cavity temperature and motor winding temperature. The reactor building ventilation radiation monitor went non-functional when the reactor building isolated on the loss of UPS power. The standby gas treatment system was started as required and restored the reactor building differential pressure. This is a 4-Hour report for 10CFR50.72(b)(2)(iv)(B) RPS Actuation and 8-Hour report for 10CFR50.72(b)(3)(xiii) Loss of Emergency Assessment Capability. The NRC Resident inspector has been notified. All systems functioned as required following the manual scram. All control rods fully inserted. The cause of the loss of the UPS is under investigation. | Reactor Recirculation Pump Reactor Building Ventilation Standby Gas Treatment System Control Rod | |
| ENS 49832 | 16 February 2014 17:16:00 | 10 CFR 50.72(b)(3)(iv)(A), System Actuation 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Unit 2 Experienced a Partial Loss of Offsite Power with Autostart of Division I and III Edgs | An automatic initiation of Emergency Diesel Generators was received due to a loss of one of two off-site power sources. On February 16, 2014 at 1216 (EST), Nine Mile Point Unit 2 experienced an automatic initiation of the Division 1 and 3 Emergency Diesel Generators (EDGs) due to a loss of Line 5. Line 5 is one of the two 115KV offsite power sources. Line 5 was lost due to an offsite event that is currently being evaluated by the grid operator. During the electrical transient, Nine Mile Point Unit 2 also experienced a feedwater level control lockup, requiring manual control. No Emergency Core Cooling Systems actuated, and feedwater level control was returned to automatic. Nine Mile Point Unit 2 remained at 100% power during the loss of Line 5, one of the offsite power sources. The NRC resident has been notified. The licensee also notified the State of New York. Unit 2 is currently in a 24-hour Technical Specification Limiting Condition of Operation (TS LCO) Action Statement 3.8.1.A3. Once Division III is realigned to the "B" side Line 6 offsite power, Unit 2 will be in a 72-hour LCO. Both EDGs are currently running. There was no effect on Unit 1.
In addition to the initiation of Division 1 and 3 Emergency Diesel Generators, Service Water Radiation Monitor 2SWP*RE146A and Radwaste/Reactor Building Vent Gaseous Effluent Monitoring Systems were also lost. Compensatory actions were established as required by station procedures and the Offsite Dose Calculation Manual. The loss of these instruments is reportable as a major loss of Emergency Assessment Capability per 10CFR50.72(b)(3)(xiii). The Service Water Radiation Monitor 2SWP*RE146A was restored to service on February 16, 2014 at 1450 EST. The Radwaste/Reactor Building Vent Gaseous Effluent Monitoring Systems were restored to service on February 17, 2014 at 0240. It is recognized that this notification is not within eight hours of the event. Line 5 is restored to OPERABLE February 17, 2014 at 1628. The NRC Resident Inspector has been informed of this additional reportable condition (and the update on the lost off-site power source). The condition has been entered into the corrective action program. The licensee also notified the State of New York Public Service Commission. The licensee exited the 72-hour LCO for the lost off-site power at 1628 on February 17, 2014. Notified R1DO(Krohn), NRREO (Monninger) and ILTAB (Whitney). | Feedwater Service water Emergency Diesel Generator Emergency Core Cooling System | |
| ENS 49795 | 5 February 2014 15:00:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Tone Alert Systems Out of Service | On Wednesday, February 5, 2014, at 1130 EST, Oswego County notified Nine Mile Point (NMP) of a loss of the tone alert system at approximately 1000. The loss of the tone alert was identified by the National Weather Service - Binghamton forecast office when it was determined that the phone line to the site was out of service. Site Emergency Procedures define a loss of the tone alert system for greater than one hour as a significant loss of emergency communications. This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) population for the NMP and JAF (James A. FitzPatrick) nuclear power plants. This failure meets NRC 8-Hour reporting criteria 10 CFR 50.72(b)(3)(xiii). Compensatory measures were verified to be available should the Prompt Notification System be needed. This consists of utilizing the hyper-reach system, which is a reverse 911 feature available from the county 911 center. The county alert sirens, which also function as part of the public prompt notification system, remain operable. At 1328 on February 5, 2014, Nine Mile Point was notified by Oswego County that the tone alert system was returned to service, effective as of 1325. The licensee informed the NRC Resident Inspector and the State of New York. | ||
| ENS 49550 | 18 November 2013 10:12:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Communications Loss to New York State Watch Tower | Nine Mile Point Nuclear Station (NMP1 and NMP2) was notified at 0512 (EST) by New York State (NYS) Watch Center that the Radiological Emergency Communications System (RECS) and commercial telephones were not available. The unavailability of the communications systems was a result of the relocation of personnel from the NYS Watch Center to an alternate location as a result of an unplanned computer server outage affecting the center network and some communications systems. While the RECS line remained operational, it was unavailable due to the relocation. An alternate method of communication was established via cell phone at the time of notification. The cause of the server loss is not known. This condition is reportable as a major loss of emergency offsite communications capability under 10CFR50.72(b)(3)(xiii). The NYS Watch Center network and communications systems have been restored and the facility staffed as of 0757 (EST). The condition has been entered into the station's corrective action program. The licensee has notified the NRC Resident Inspector. | ||
| ENS 49481 | 29 October 2013 09:56:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Unplanned Loss of Ten Area Radiation Monitors Impacting Emergency Assessment Capability | At 0556 EDT, (on 10/29/13), Nine Mile Point Unit 1 experienced an unplanned loss of ten area radiation monitors due to a loss of the associated power supply. These monitors are located throughout the station. Compensatory local monitoring was established in the affected areas until the area radiation monitors could be restored to service. The cause of the loss of the power supply was determined to be a blown fuse. The fuse was replaced and the power supply was restored at 1040 EDT. All area radiation monitors are restored. Post maintenance testing is in progress. The condition is reportable as a major loss of emergency assessment capability in accordance with 10CFR50.72(b)(3)(xiii). The NRC Resident Inspector has been notified. An update will be provided once the area radiation monitors have been restored to functional status. * * * UPDATE FROM RYAN C. HAMILTON TO PETER J. SNYDER AT 1545 EDT ON 10/29/13 * * * Post maintenance testing is complete and the affected area radiation monitors are declared functional as of 1440 (EDT) on 10/29/13." Notified R1DO (Krohn). | ||
| ENS 49418 | 8 October 2013 02:04:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Service Water Radiation Monitor Out of Service | At 2204 EDT on October 7, 2013, Nine Mile Point Unit 2 received DRMS (Digital Radiation Monitor System) low sample flow alarm and sample pump trip for 2SWP*CAB146B. The chemistry department was notified to collect and analyze grab samples per ODCM 3.3.1 as a compensatory measure with the Service Water Radiation Monitor 2SWP*CAB146B out of service. Attempts to restart 2SWP*CAB146B within 1 hour were unsuccessful. 2SWP*CAB146B remains Non-Functional. Technicians are being called in to restore the monitor to Functional status. The Service Water Radiation Monitors are necessary for accident assessment and are credited for Emergency Action Level (EAL) classification. The inability to classify an EAL due to an out of service monitor is considered a loss of assessment capability per 10 CFR 50.72(b)(3)(xiii). This condition does not affect the health or safety of the public or the operation of the facility. Compensatory actions remain in place to sample per the requirements of the ODCM 3.3.1. The NRC Resident Inspector has been notified.
At 1027 EDT on October 8th, 2013 Nine Mile Point Unit 2 received a DRMS low sample flow alarm and sample pump trip for 2SWP*CAB146A. Service Water Radiation Effluent Monitor SWP*CAB146B remains NONFUNCTIONAL, but in service from the previous shift with required compensatory measures per ODCM 3.3.1 already in place (12 hour grab samples/30 day restoration). Attempts to restore 2SWP*CAB146A within 1 hour were unsuccessful. As of 1220 EDT on October 8th, 2SWP*CAB146A monitor has been restored to service and is now capable of providing information for emergency assessments, the monitor is in confidence run for restoration to FUNCTIONAL status. The Service Water Radiation Monitors are necessary for accident assessment and are credited for Emergency Action Level (EAL) classifications. The inability to classify an EAL due to an out of service monitor is considered a loss of assessment capability per 10 CFR 50.72 (b)(3)(xiii). This condition does not affect the health or safety of the public or the operation of the facility because the monitor is currently back in service. The NRC Resident Inspector has been notified. | Service water | |
| ENS 49391 | 28 September 2013 16:13:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Digital Radiation Monitor Low Sample Flow Alarm Received | At 1213 EDT on September 28, 2013 Nine Mile Point Unit 2 received (Digital Radiation Monitor System) DRMS low sample flow alarm and monitor status of sample pump off for 2SWP*RE146A. The chemistry department was notified to collect and analyze grab samples per (Offsite Dose Calculation Manual) ODCM 3.3.1 as a compensatory measure with the service water radiation monitor 2SWP*CAB146A out of service. 2SWP*RE146A was restarted at 1517 EDT and declared functional. At 1548 EDT on September 28, 2013 Nine Mile Point Unit 2 received DRMS low sample flow alarm and monitor status of sample pump off for 2SWP*RE146B. Chemistry was again notified to collect and analyze grab samples per ODCM 3.3.1 as a compensatory measure with the service water radiation monitor 2SWP*CAB146B out of service. The service water radiation monitors are necessary for accident assessment and are credited for Emergency Action Level (EAL) classification. The inability to classify an EAL due to an out of service monitor is considered a loss of assessment capability per CFR 50.72(b)(3)(xiii). This condition does not affect the health or safety of the public or the operation of the facility. Compensatory actions remain in place to sample per the requirements of the ODCM. The NRC Resident Inspector has been notified.
The Service Water radiation monitors have been restored to service and declared functional. 2SWP*CAB146B restored after maintenance Saturday, 09/28/13 at 2243 EDT. 2SWP*CAB146A was removed from service for maintenance at 2243 EDT on 09/28/13, restored to service and declared functional Saturday, 09/28/13 at 2337 EDT. The NRC Resident Inspector will be notified. Notified R1DO (Welling).
Update to notification: Received subsequent DRMS low sample flow alarm and sample pump trip at 0619 on 9/29/13 for Service Water Radiation monitor 2SWP*CAB146B. The sample pump was returned to service and subsequently tripped again. The monitor has been declared non-functional and Compensatory Actions are being taken per ODCM. Maintenance is engaged for resolution. Investigation includes potential impact from Service Water Mollusk Biocide Treatment which concluded 9/26/13. The licensee informed the NRC Resident Inspector. Notified R1DO (Welling).
The Service Water Radiation monitor 2SWP*CAB146B was removed from service for inspection. The cause of the radiation monitor tripping is attributed to the scale that is forming on the flow switch sensing element. Flow switch element on 2SWP*CAB146B has been cleaned and radiation monitor has been placed back in service. The monitor was placed in service on 9/29/13 at 1200 and has been functioning properly since then. As of 2100, 2SWP*CAB146B has been declared functional and ODCM 3.3.1 actions have been exited. The licensee will notify the NRC Resident Inspector. Notified R1DO (Joustra). | Service water | |
| ENS 49176 | 7 July 2013 08:00:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Radwaste/Reactor Building Vent Gaseous Effluent Radiation Monitoring Capability | At 0400 EDT on July 7, 2013, Nine Mile Point Unit 2 isolated the Reactor Building to comply with Tech Spec 3.3.6.2.A.1 Secondary Containment Isolation Instrumentation. Isolating the Reactor Building was the result of Refuel Floor Radiation Monitor 2HVR*CAB14A becoming inoperable on 7/6/13 at 0430 hours. As a result of the Reactor Building being isolated, the Radwaste/Reactor Building Vent Gaseous Effluent Radiation Monitor has been declared non-functional based on sample flow rates. The Radwaste/Reactor Building Vent Gaseous Effluent Radiation Monitor is necessary for accident assessment and is credited for Emergency Action Level (EAL) classification. The inability to classify an EAL due to the out-of-service Radwaste/Reactor Building Vent Gaseous Effluent Monitor is considered a loss of emergency assessment capability and is reportable per 10 CFR 50.72(b)(3)(xiii). Repairs and testing are currently in progress to correct the cause and restore functionality of Radiation Monitor 2HVR*CAB14A. The expected return to service time is within the next 12 hours. Compensatory actions for the non-functional Radwaste/Reactor Building Vent Gaseous Effluent Radiation Monitor are in place to take and analyze periodic grab samples and flow estimates in accordance with the Offsite Dose Calculation Manual. The NRC Resident Inspector has been notified." The licensee will also be notifying state authorities. * * * UPDATE ON 7/8/13 AT 1145 EDT FROM DAN CIFONELLI TO DANIEL MILLS * * * "Radiation Monitor 2HVR*CAB14A has been repaired and was declared operable at 1920 on July 7, 2013. Normal Reactor Building ventilation was subsequently re-established, and the Radwaste/Reactor Building Vent Gaseous Effluent Radiation Monitor was retumed to service at 2100 on July 7, 2013, thereby restoring emergency assessment capability. The NRC Resident Inspector has been notified. | Secondary containment Reactor Building Ventilation | |
| ENS 49127 | 17 June 2013 16:27:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Radwaste / Reactor Building Vent Gaseous Effluent Radiation Monitoring Capability | At 1227 EDT on June 17, 2013, Nine Mile Point Unit 2 determined that the Radwaste / Reactor Building vent gaseous effluent radiation monitor had failed its source check and was, therefore, non-functional. This radiation monitor is necessary for accident assessment and is credited for Emergency Action Level (EAL) classification. The inability to classify an EAL due to the out-of-service Radwaste / Reactor Building vent gaseous effluent monitor is considered a loss of emergency assessment capability and is reportable per 10CFR50.72(b)(3)(xiii). Troubleshooting is currently in progress. The expected out-of-service time is unknown at this time. Compensatory actions are in place to take and analyze periodic grab samples in accordance with the Offsite Dose Calculation Manual. The NRC Resident Inspector has been notified.
The Radwaste/Reactor Building vent gaseous effluent radiation monitor has been repaired and was returned to service at 0330 (EDT) on June 20, 2013, thereby restoring emergency assessment capability. The NRC Resident Inspector has been notified The licensee will notify the state. Notified R1DO (Rogge). | ||
| ENS 49094 | 6 June 2013 07:11:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Service Water Radiation Monitor Removed from Service for Maintenance | At 0311 EDT on June 3, 2013 Nine Mile Point Unit 1 removed the Service Water Radiation Monitor from service for planned maintenance. Due to expanded scope of the work, the Service Water Radiation Monitor will not be returned to service within 72 hours. The Chemistry department has been performing periodic grab samples per the requirements of the Offsite Dose Calculation Manual (ODCM) as a compensatory measure with the Service Water Radiation Monitor out of service. The Service Water Radiation Monitor is necessary for accident assessment and is credited for Emergency Action Level (EAL) classification. The inability to classify an EAL due to an out of service monitor is considered a loss of assessment capability per CFR 50.72(b)(2)(xiii). Compensatory actions remain in place to sample per the requirements of the ODCM. This event is being reported as a loss of emergency assessment capability in accordance with 10 CFR 50.72(b)(3)(xiii). A follow up notification will be made when the equipment has been returned to service. The NRC Resident inspector has been notified.
The Service Water Radiation Monitor maintenance is complete and the Radiation Monitor has been returned to service. Emergency Assessment Capability has been restored. The licensee will notify the NRC Resident Inspector. Notified R1DO (Burritt) | Service water | |
| ENS 49069 | 26 May 2013 22:39:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Tone Alert Radios Out of Service | At 1839 EDT on May 26, 2013 Oswego County Emergency Management notified Nine Mile Point (NMP) that the Tone Alert Radios had been out of service since 1745 EDT. This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) Population for the Nine Mile Point and JAF (James A. FitzPatrick) Nuclear Power Plants. This failure meets NRC 8 hour reporting criterion 10 CFR 50.72(b)(3)(iii). The County Alert Sirens which also function as part of the Public Prompt Notification System remain operable. The loss of the Tone Alert Radios constitutes a significant loss of emergency off-site communications ability. Compensatory measures have been verified to be available should the Prompt Notification System be needed. This consists of utilizing the hyper reach system which is a reverse 911 feature available from the county 911 center. Local Law Enforcement Personnel are also available for 'Route Alerting' of the affected areas of the EPZ. At 2111 EDT on May 26, 2013, NMP was notified by Oswego County Emergency Management that the Tone Alert Radios had been returned to service. The event has been entered into the corrective action program and the NRC Resident Inspector has been briefed. | ||
| ENS 48957 | 23 April 2013 07:30:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | State Notification Line Outage | Nine Mile Point Nuclear Station (NMP1 and NMP2) was notified by NYS Warning Point that the RECS (Radiological Emergency Communication System) line and all land lines to NYS were nonfunctional beginning at approximately 0330 (EDT) on 4/23/13. Due to this condition, NMPNS did not have any communications with the NYS Warning Point available via NORMAL or BACKUP methods per Emergency Plan Procedures. At 0734 (EDT), the NMP1 and NMP2 control rooms were provided an alternate means of contacting the NYS Warning Point via cell phone and hence a viable means of BACKUP communications was established. Per 10 CFR 50.72 (b)(3)(xiii) any event that results in a major loss of offsite communications capability (offsite notification system between licensee and off site officials - NYS) is reportable via 8-hour report. Subsequent to this event at approximately 0930 (EDT), functionality of the RECS line was restored. The licensee notified the NRC Resident Inspector. | ||
| ENS 48901 | 9 April 2013 06:35:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Power Lost to Meteorological Instrumentation | At 0235 EDT on 4-9-13, due to an offsite power transformer fault, power was lost to site support buildings and all meteorological instrumentation. This event is being reported under 10CFR50.72(b)(3), major loss of emergency assessment capabilities. At 0455 EDT, power was restored to meteorological instrumentation in the control room. During the power outage, limited meteorological data remained available via telephone from the National Weather Service and the Fitzpatrick site met tower. Plant operations at both units 1 and 2 were not affected. Both units remain at full power. The licensee notified the NRC Resident Inspector. | ||
| ENS 47910 | 8 May 2012 15:14:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Technical Support Center Out of Service | On 5/8/2012 at 1114 EDT, maintenance informed the Control Room that a fan blade on one of the Technical Support Center (TSC) ventilation compressors had failed, causing the fan and motor to become unstable. As a result, Operations secured TSC ventilation and declared the TSC non-functional. The on-call Emergency Response Manager and Site Emergency Coordinator were notified and the alternate TSC remains available. The affected unit has been isolated and TSC ventilation re-started and declared functional as of 1900 EDT on 5/8/2012. The license will notify the NRC Resident Inspector. | ||
| ENS 47788 | 30 March 2012 02:42:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Tone Alert System | On Thursday, March 29, 2012, at 2242 EDT, Oswego County notified Nine Mile Point (NMP) via the land line of a loss of the Tone Alert System as of 2105 (EDT). Site Emergency Procedures define a loss of Tone Alert System for greater than one hour as a significant loss of Emergency Communications (EPIP-EPP-30). This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) Population for the NMP and (James A. FitzPatrick) JAF Nuclear Power Plants. This failure meets NRC 8-Hour reporting criteria 10 CFR 50.72(b)(3)(xiii). Compensatory measures were verified to be available should the Prompt Notification System be needed. This consists of utilizing the Hyper-Reach system, which is a reverse 911 feature available from the county 911 center. The County Alert Sirens, which also function as part of the Public Prompt Notification System, remain operable. At 2300 EDT, Nine Mile Point received notification from Oswego County 911 that the Tone Alert System has been restored and is fully functional as of 2245 EDT. The licensee has notified the NRC Resident Inspector. The cause of the loss is still being investigated.
At 03:33 (EDT) on 3/30/12, Nine Mile Point was notified by the Oswego County Emergency Management Office (OGEMO) that the Tone Alert System had been out of service for greater than one (1) hour. This condition is considered a significant loss of offsite communication capability and is therefore a 50.72 8-hour non-emergency reportable condition per 10 CFR 50.72(b)(3)(xiii). The Tone Alert System failed at 0211 on 3/30/12 and was subsequently restored to service at 0328 on 3/30/12. This failure was the second such failure in a 24 hour period. The first failure occurred at 2105 on 3/29/12 and was restored at 2245 on 3/29/12. The first failure was reported to the US Nuclear Regulatory Commission Operations Center at 0059 on 3/30/12. The cause of the Tone Alert System loss is being investigated by the OCEMO. Oswego County reported that the National Weather Service had verified the system was broadcasting as designed at 0540 on 3/30/12. During the time the Tone Alert System was unavailable, the county emergency sirens, the Hyper-Reach system which is a reverse 911 feature available from the county 911 center, and 'Route Alerting' where Local Law Enforcement personnel are able to assist in alerting affected areas of the Emergency Planning Zone were available as alternate mechanisms to provide emergency offsite notifications. The licensee notified the NRC Resident Inspector. Notified the R1DO (Newport). | ||
| ENS 47743 | 14 March 2012 17:05:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of the Tone Alert Radio System | On Monday, March 12, 2012, at 1435 EDT, Oswego County Warning Point notified Nine Mile Point, and NYS (New York State) Warning Point, via the land line, of a loss of the Tone Alert System for greater than one hour from the National Weather Service as of 1305 hrs. Site Emergency Procedures define a loss of Tone Alert System for greater than one hour, as a significant loss of Emergency Communications (EPIP-EPP-30). This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) population for the NMP (Nine Mile Point) and JAF (James A. Fitzpatrick) Nuclear Power Plants. This failure meets NRC 8-Hour reporting criteria 10 CFR 50.72(b)(3)(xiii). The County Alert Sirens, which also function as part of the Public Prompt Notification System, remained operable. The loss of the Tone Alert System constitutes a significant loss of Emergency Off-Site Communications capability. Compensatory measures were verified to be available should the Prompt Notification System be needed. This consists of utilizing the hyper-reach system, which is a reverse 911 feature available from the county 911 center. Local law enforcement personnel are also available for 'Route Alerting' of the affected areas of the EPZ. The licensee has notified the NRC Resident Inspector.
The tone alert system was restored Thursday, March 15, 2012 at 0933 EDT. The licensee notified the NRC Resident Inspector. Notified the R1DO (Krohn).
Correction to original notification: In the description above, the date of event was incorrectly identified as Monday, March 12, 2012, the date should have been Wednesday, March 14, 2012. Notified the R1DO (Krohn). | ||
| ENS 47718 | 5 March 2012 17:36:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Tone Alert Radio System | On Monday, March 5, 2012, at 1305 EST, Oswego County Warning Point notified Nine Mile Point (NMP) and NYS (New York State) Warning Point, via the RECS Line, of a loss of the Tone Alert System for greater than one hour as of 1236 EST from the National Weather Service. Site Emergency Procedures define a loss of Tone Alert System for greater than one hour as a significant loss of Emergency Communications (EPlP-EPP-30). This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) Population for the NMP and JAF (James A. FitzPatrick) Nuclear Power Plants. This failure meets NRC 8-hour reporting criteria 10 CFR 50.72(b)(3)(xiii). The County Alert Sirens, which also function as part of the Public Prompt Notification System, remained operable. The loss of the Tone Alert System constitutes a significant loss of emergency off-site communications capability. Compensatory measures were verified to be available should the Prompt Notification System be needed. This consists of utilizing the hyper-reach system, which is a reverse 911 feature available from the county 911 center. Local law enforcement personnel are also available for 'Route Alerting' of the affected areas of the EPZ. As of 1327 EST on March 5, 2012, Nine Mile Point was notified by the Oswego County Warning Point that the Tone Alert System has been returned to service. The licensee notified the NRC Resident Inspector. | ||
| ENS 47331 | 7 October 2011 17:20:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Communications Systems Due to Cut Fiber Optic Cable | On 10/07/11, at approximately 1320 EDT, Nine Mile Point Unit 1 received multiple annunciators related to the offsite power tone monitoring system. These annunciators were subsequently determined to have been caused by damage to an offsite fiber optic cable line. The damaged fiber optic cable also disabled the Emergency Notification System (ENS) and Radiological Emergency Communication System (RECS) communication lines, which is reportable under 10 CFR 50.72(3)(b)(xiii). ENS is the Control Room's primary method for communicating with the NRC headquarters during emergency conditions. If an emergency is declared with the ENS line inoperable, the Control Room maintains the ability to make notification to offsite agencies using commercial telephone lines. Control Room personnel have been briefed on the required contingent actions with the ENS line inoperable. The licensee notified the NRC Resident Inspector and State and local agencies. See related event notification EN #47332. | ||
| ENS 46667 | 11 March 2011 01:15:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Primary and Backup Meterological Monitoring Equipment on Both Towers | Loss of power to radiological monitoring equipment (primary and backup). This constitutes a major loss of emergency assessment capability per Nine Mile Point procedures. The cause of the loss of monitoring equipment is a downed 13.2 kV power line. Monitoring capability was restored at 0100. The loss of power was caused by high winds, and the grid operator was able to restore power at 0100 EST. The NRC Resident Inspector has been notified. | ||
| ENS 46630 | 20 February 2011 13:53:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Tone Alert Radio Emergency Notification System Out of Service | On Sunday, February 20, 2011, at 1007 EST, James A. Fitzpatrick (JAF) Nuclear Station Shift Manager (SM), John Walkowiak, notified Nine Mile Point (NMP), and NYS Warning Point, via the RECS Line, of a loss of the Tone Alert System for greater than one hour from the National Weather Service as of 0853 (EST). Site Emergency Procedures define a loss of Tone Alert System for greater than one hour, as a significant loss of Emergency Communications (EPIP-EPP-30). This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) Population for the NMP and JAF Nuclear Power Plants. This failure meets NRC 8-Hour reporting criteria 10 CFR 50.72(b)(3)(xiii). The County Alert Sirens, which also function as part of the Public Prompt Notification System, remained operable. The loss of the Tone Alert System constitutes a significant loss of Emergency Off-Site Communications capability. Compensatory measures were verified to be available should the Prompt Notification System be needed. This consists of utilizing the hyper-reach system, which is a reverse 911 feature available from the county 911 center. Local law enforcement personnel are also available for 'Route Alerting' of the affected areas of the EPZ. As of 1124 hours on February 20, 2011, Nine Mile Point was notified by the Oswego County 911 Center that the Tone Alert System has been returned to service. The licensee has notified the NRC Resident Inspector. | ||
| ENS 46626 | 19 February 2011 05:50:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Safety Parameter Display System Inoperable Due to Plant Computer Problem | At 1650 EST on Friday, February 18, 2011 , the Unit 1 Plant Process Computer was taken out of service for a planned outage for pre-modification testing. The Process Computer was successfully restarted at 0040 on Saturday, February 19, and all Computer functions were operational. However, at 0058, the Unit 1 Control Room received the annunciator for the Process Computer trouble. At the same time, all Process Computer displays stopped updating, including Safety Parameter Display System SPDS. All Control Room panel indicators and annunciators continued to respond properly providing operators with non-computer based emergency assessment capability. An additional Plant Operator was called out in accordance with Technical Specification 6.2.2.a for minimum shift complement with the process computer out of service. Repairs were completed and the Plant Process Computer was returned to service at 0450 on February 19, 2011. The licensee has notified the NRC Resident Inspector. | Safety Parameter Display System | |
| ENS 46456 | 4 December 2010 16:42:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Tone Alert Emergency Notification System Inoperable | On Saturday, December 04, 2010 at 1142 (EST), the NYS Warning Point informed NMP (Nine Mile Point) via the RECS (Radiological Emergency Communications System) line that the EAS/Tone system was out of service for greater than one hour as of 1128 (EST). 10CFR 50.72(b)(3)(xiii) requires reporting within 8 hours when a significant portion of the emergency communications system has been lost. Site Emergency Procedures define a loss of EAS/Tone for greater than 1 hour as a significant loss of emergency communications. The EAS/Tone Alert system was returned to service on December 4, 2010 at 1255 (EST). The event has been entered into the corrective action program, The licensee notified the NRC Resident Inspector. | ||
| ENS 46347 | 20 October 2010 01:08:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Failure of Plant Process Computer Displays and Spds to Update | This 8-hour non-emergency report is being made based upon requirements of 10 CFR 50.72(b)(3)(xiii) which states that the licensee shall notify the NRC as soon as practical and in all cases within eight hours of the occurrence of: 'Any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability (e.g., significant portion of control room indication, Emergency Notification System, or offsite notification system).' At 1308 EDT on Tuesday, October 19, 2010, the Nine Mile Point Unit 1 Control Room received the annunciator for Process Computer Trouble. At the same time, all Process Computer displays stopped updating, including the Safety Parameter Display System (SPDS). All Control Room panel indicators and annunciators continue to respond properly providing operators with non-computer based emergency assessment capability. An additional Plant Operator has reported to shift in accordance with Technical Specification 6.2.2.a for minimum shift complement with the process computer out of service. An update to this notification will be made after repairs are completed and the SPDS is returned to service. The licensee informed the NRC Resident Inspector.
On Wednesday, October 20, 2010, repairs were completed and at 0439 EDT, the Plant Process Computer (PPC) was successfully restarted. Upon restart, SPDS was verified operable. The licensee informed the NRC Resident Inspector. Notified R1DO (Miller). | Safety Parameter Display System | |
| ENS 46248 | 13 September 2010 14:31:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Scheduled Telephone Cable Rerouting Impacts to the Control Room and Technical Support Center | This is an eight hour report per 10 CFR 50.72 (b)(3)(xiii). Nine Mile Point is implementing a scheduled modification to reroute telephone cables as part of a planned Interim Spent Fuel Storage (ISFSI) modification. This rerouting will enable construction of the roadway to the ISFSI storage location and ensure no damage to telephone cables which currently pass through the roadway. The re-routing will ensure that no cabling important to control room and or TSC will pass under the roadway This work required that all Federal Telephone System (FTS) 2001 lines including Emergency Notification System (ENS), Health Physics Network (HPN) and Emergency Response Data System (ERDS) be removed for a period of approximately 1 hour. During the upgrade starts only 5 circuits were removed at a time and tested upon completion of re-routing. There was at least 2 alternate means of communication (via commercial telephone lines) continuously available. If an emergency had been declared during this period, the Control Room had the capability to make the notification to the offsite agencies using commercial telephone lines. The emergency preparedness communications procedure provides adequate instructions for use of these backup means. The Nine Mile Point procedures provide for alternate means of emergency assessment capability. All work associated with this modification was performed in an expeditious manner consistent with the goal of minimizing unavailability of the systems listed above. A test of all systems will be performed at the completion of the upgrade. All Control Room personnel have been briefed on this work and expected contingent actions. This job began on Monday, September 13, 2010 at approximately 1031 (EDT) and was completed at 1153 (EDT). The licensee notified the NRC Resident Inspector. | Emergency Response Data System | |
| ENS 45503 | 17 November 2009 22:40:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of National Weather Service Tone Alert Radio System | At 1819 on November 17, 2009, with Nine Mile Point Unit 1 and Unit 2 operating at 100% power, (Nine Mile Point was) notified via the RECS Line by Oswego County Warning Point, that the National Weather Service Tone Alert Radio System for Nine Mile Point and James A. Fitzpatrick Nuclear Power Plants has been out of service for greater than 1 hour as of 1740 on 11/17/2009. This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) population for the Nine Mile Point and James A. Fitzpatrick Nuclear Power Plants. This failure meets the NRC 8-hour reporting criteria per 10 CFR 50.72(b)(3)(xiii). The County Alert Sirens, which also function as part of the Public Prompt Notification System, remain operable. The loss of the National Weather Service Tone Alert Radio System constitutes a significant loss of emergency off-site communications capability. Compensatory measures were verified to be available should the Prompt Notification System be needed. This includes the use of the hyper-reach system, which is a reverse 911 feature, available from the Oswego County 911 center. Local law enforcement personnel are also available for 'Route Alerting' of the affected areas of the EPZ. The event has been entered into the site's corrective action program and the NRC Resident Inspector has been notified. See EN# 45504 for James A. Fitzpatrick Nuclear Plant.
At 0318 on November 18, 2009, notified via the RECS (Radiological Emergency Communication System) Line by Oswego County Warning Point that the National Weather Service Tone Alert Radio System for Nine Mile Point and James A. Fitzpatrick Nuclear Power Plants has been returned to service. The NRC Resident Inspector has been notified. Notified R1DO(McKinley) | ||
| ENS 45323 | 2 September 2009 12:30:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Spds Computer | This 8-hour non-emergency report is being made based upon requirements of 10CFR50.72(b)(3)(xiii) which states, 'The licensee shall notify the NRC as soon as practical and in all cases within eight hours of the occurrence of any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability (e.g., significant portion of control room indication, Emergency Notification System, or offsite notification system).' An example of a major loss of emergency assessment capability is when the Safety Parameter Display System (SPDS) computer is unavailable for greater than eight hours. At 0830 EDT on Wednesday, September 02, 2009 the SPDS Computer was found by the computer department to have one of three interface modules failed. The interface module transports data from the radwaste computer to SPDS. The failure resulted in a loss of 187 SPDS points. All other SPDS points along with Plant Process Computer functions are available. Information Technology Department personnel are investigating the cause of the interface module failure, which is currently unknown. No other control room emergency assessment capabilities have been adversely affected. All Control Room panel indicators and annunciators are responding properly. The licensee notified the NRC Resident Inspector.
The Safety Parameter Display System (SPDS) was returned to service at 1030 EDT on 9/10/2009. Degraded SPDS components have been repaired and SPDS has been verified to be functional and capable of meeting all required design functions. The licensee has notified the NRC Resident Inspector. Notified R1DO (Powell). | Safety Parameter Display System | |
| ENS 45157 | 24 June 2009 04:00:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Tone Alert Radios | At 0945 on June 24, 2009, with the Nine Mile Point (NMP) Nuclear Power Plant operating at 100% reactor power, Oswego County Emergency Management notified NMP that the National Weather Service had notified them that the Tone Alert Radios had been out of service since 0845. This impacts the ability to readily notify a portion of the Emergency Planning Zone (EPZ) population for the NMP and James A. Fitzpatrick Nuclear Power Plants. This failure meets NRC 8-hour reporting criterion 10CFR.50.72(b)(3)(xiii). The National Weather Service is currently working to determine the cause of the failure and time frame for system restoration. The County alert sirens which also function as part of the public prompt notification system remain operable. The loss of the Tone Alert Radios constitutes a significant loss of emergency off-site communications ability. Compensatory measures have been verified to be available should the prompt notification system be needed. This consists of utilizing the hyper reach system which is a reverse 911 feature available from the county 911 center. Local Law Enforcement personnel are also available for 'Route Alerting' of the affected areas of the EPZ. The event has been entered into the corrective action program and the NRC Resident Inspector has been briefed and the State PSC will also be notified. See Event Notice # 45156 James A. Fitzpatrick Nuclear Power Plant report. | ||
| ENS 45031 | 29 April 2009 23:38:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Tone Alert Radios Out of Service | At 2230 on April 29, 2009, with Nine Mile Point Unit 1 and Unit 2 operating at 100% reactor power, Oswego County Emergency Management notified the Unit 1 and Unit 2 Control Rooms that the National Weather Service had notified them that the Tone Alert Radios had been out of service since 1938 (on 4/29/09). At 0015 on April 30, Oswego County Emergency Management notified the Control Rooms that the Tone Alert Radios had been restored to service as of 0012, April 30, 2009. This impacted the ability to readily notify a portion of the Emergency Planning Zone (EPZ) Population for the Nine Mile Point and JAF (James A. FitzPatrick see EN# 45030) Nuclear Power Plants. This failure meets NRC 8 hour reporting criterion 10 CFR 50.72(b)(3)(xiii). The County Alert Sirens which also function as part of the Public Prompt Notification System remained operable. The loss of the Tone Alert Radios constitutes a significant loss of emergency offsite communications capability. Compensatory measures were verified to be available should the Prompt Notification System be needed. This consists of utilizing the hyper reach system which is a reverse 911 feature available from the county 911 center. Local Law Enforcement Personnel are also available for 'Route Alerting' of the affected areas of the EPZ. The event has been entered into the corrective action program, and the (NRC) Resident Inspector has been briefed, and the state PSC will also be notified. | ||
| ENS 44827 | 3 February 2009 18:37:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Safety Parameter Display System Inoperable | This 8-hour non-emergency report is being made based upon requirements of 10CFR50.72(b)(3)(xiii) which states, 'The licensee shall notify the NRC as soon as practical and in all cases within eight hours of the occurrence of any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability (e.g., significant portion of control room indication, Emergency Notification System, or offsite notification system)'. At 0539 EST on Tuesday, February 3, 2009, the Control Room discovered that the plant process computer was not updating and subsequently observed the Safety Parameter Display System (SPDS) Computer Display was not updating data. This was discovered during periodic Control Room monitoring. The last data update on the SPDS display was at 0537 EST. Information Technology Department personnel are investigating the cause of the loss of SPDS capability. The Information Technology Department personnel have been unsuccessful in recovering within the 8 hour restriction. No other Control Room emergency assessment capabilities have been adversely affected. All Control Room panel indicators and annunciators are responding properly. The licensee has notified the NRC Resident Inspector.
On Wednesday, February 04, 2009 at 1319 EST, the Plant Process Computer (PPC) was successfully restarted. The performance of the PPC and SPDS was monitored for approximately eight hours. SPDS was declared operable at 2130, restoring full emergency assessment capability. The licensee will notify the NRC Resident Inspector. Notified R1DO (White). | Safety Parameter Display System | |
| ENS 44747 | 1 January 2009 05:42:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Safety Parameter Display System Inoperable | This 8-hour non-emergency report is being made based upon requirements of 10CFR50.72(b)(3)(xiii) which states, 'The licensee shall notify the NRC as soon as practical and in all cases within eight hours of the occurrence of any event that results in a major loss of emergency assessment capability, off site response capability, or offsite communications capability (e.g., significant portion of control room indication, Emergency Notification System, or off site notification system)'. At 0430 ET on Thursday, January 01, 2009, Operators discovered that the Plant Process Computer (PPC) typer display output was not updating. In addition all keyboard control was lost. The Safety Parameter Display System (SPDS) Computer Display was updating, but the operators were not able to change the display to alternate views rendering the SPDS system degraded to the point of not being able to perform its monitoring function. This condition initially began at 0042 on 01 January 2009. All Control Room panel indicators and annunciators continued to respond properly providing operators with non-computer based emergency assessment capability. The PPC was secured for troubleshooting at 0746 on 01 January 2009. An update to this notification will be made after repairs are completed and the SPDS is returned to service. The NRC Resident Inspector has been notified.
On Thursday, January 01, 2009 at 1140 ET, the Plant Process Computer (PPC) was successfully restarted. The performance of the PPC and SPDS was monitored for approximately one hour. SPDS was declared operable at 1300, restoring full emergency assessment capability. The licensee will inform the NRC Resident Inspector. Notified R1DO (Dentel). | Safety Parameter Display System | |
| ENS 44686 | 26 November 2008 18:06:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Emergency Communications Lines | On 11-26-2008, at 13:06 EST, both Control Rooms were notified by Emergency Planning Department that the following phone notification systems are out of service: RECs (Radiological Emergency Communications System) line, ENS line and HPN line. Also, three dedicated '754' prefix lines in the TSC are currently inoperable. Site Information Technology Department personnel are working with communications equipment vendor, Verizon, to resolve the issues. State and local authorities and the NRC Resident Inspector have been notified.
The RECs, ENS, and HPN lines have been returned to service with the exception of a line to the State Warning Point in Albany NY. The NRC Resident Inspector has been notified. | ||
| ENS 44491 | 15 September 2008 04:00:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Emergency Notification Sirens Due to High Winds | On September 15, 2008 a severe windstorm moved through Oswego County and resulted in local area power outages. Seven (7) of thirty-seven (37) emergency notifications sirens are out of service. Tracking for station reporting criteria of 'four or more sirens out of service for 12 hours or more' was initiated at 02:44 with seven sirens out of service at that time. Five of the original seven out of service sirens remain out and two additional sirens have subsequently lost power. Sirens affected provide coverage to Oswego County. The sirens are utility owned and shared with the James A. FitzPatrick site. In the event the sirens are needed, the County has it's Hype-Reach (911 call back system) on standby. 10 CFR 50.72(b)(3)(xiii) requires reporting within 8 hours when a significant portion of the emergency communication system has been lost. The site emergency procedures defines loss of 4 or more sirens for 12 hours or 19 or more sirens for 1 hour as a significant loss of emergency communications. Since the restoration activities did not result in restoring the siren system to less than 4 sirens out of service by 14:44 this reporting criteria is met. The event has been entered into the corrective action program and the resident inspector has been briefed. There are no other adverse impacts to the station based on this event.
The licensee reported that 5 sirens were returned to service. There is no completion time for return to service of the remaining 3 sirens. The licensee notified the NRC Resident Inspector.
The licensee reported that at 1150 on 09/16/2008, all emergency sirens were returned to service and are now operable. The licensee notified the NRC Resident Inspector. | ||
| ENS 44387 | 6 August 2008 22:40:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Safety Parameter Display System Assessment Lost | This 8-hour non-emergency report is being made based upon requirements of 10CFR50.72(b)(3)(xiii) which states, 'The licensee shall notify the NRC as soon as practical and in all cases within eight hours of the occurrence of any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability (e.g., significant portion of control room indication, Emergency Notification System, or offsite notification system)'. At 18:40 ET on Wednesday, August 06, 2008, the Reactor Operator At-the-Controls (OATC) discovered that the Safety Parameter Display System (SPDS) Computer Display was not updating data. This was discovered during periodic Control Room panel walkdowns. The last data update on the SPDS display was at 20:02 ET on Tuesday, August 05, 2008. All other Plant Process Computer functions are available. Information Technology Department personnel will be investigating the cause of the loss of SPDS capability, which is currently unknown. No other Control Room emergency assessment capabilities have been adversely affected. All Control Room panel indicators and annunciators are responding properly. The licensee notified the NRC Resident Inspector.
On Wednesday, August 06, 2008 at 2151 EDT, the Plant Process Computer (PPC) was shutdown and successfully restarted at 2318 EDT. Upon restart, SPDS was verified operable. The licensee notified the NRC Resident Inspector. Notified R1DO (Krohn). | Safety Parameter Display System | |
| ENS 43710 | 11 October 2007 05:00:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Tone Alert Radio System Out of Service for Maintenance | The tone alert radio system for Nine Mile point was taken out of service for planned maintenance. Per Site Emergency Planning procedures this constitutes a partial loss of the Public Prompt Notification System (Loss of Communication) and thus is reportable under 10 CFR 50.72 (3)(b)(xiii). The tone alert radio system is installed in Oswego County residences and businesses who can not hear the siren system when activated. The tone alert radio system notifies Oswego County resident of emergency situations. The tone alert radio system is maintained and operated by the National Weather Service (NWS). NWS estimates that the system will be out of service for approximately 6 hours. The county alert sirens, which also function as part of the public prompt Notification System, are operable. The licensee notified the State and local governments. The licensee will notify the NRC Resident Inspector.
The Oswego County Emergency Management Office was notified on 10/11/07 at approximately 1150 by the National Weather Service, NWS (Binghamton, NY) that the Tone Alert System is in service and fully functional. The NWS informed Oswego County that the time the Tone Alert System was out of service from 10/10/07 at 2350 until 10/11/07 at 0013 for a total of 23 minutes. The 23 minutes is less than the one hour criteria for a 10CFR50.72 notification. As such, the initial notification is retracted." R1DO (W. Cook) notified. The NRC Resident Inspector was notified of this retraction by the licensee. State and Local Officials have also been notified of this retraction by the licensee. | ||
| ENS 43451 | 27 June 2007 14:15:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Communications Capability at Eof | At approximately 1015, Nine Mile Point Emergency Planning noted the loss of phone service in the Emergency Operations Facility (EOF) and Joint News Center (JNC) during a routine surveillance. Nine Mile Point emergency planning staff were subsequently notified at 1030. (During) discussions with the Oswego County 911 center (sole 10 mile EPZ county), it was determined that phone service in the Windstream phone company that services that area was lost at approximately 1015 hours. Most telephone and data capability at the EOF and Joint Information Center (JIC) is out of service at this time. Cellular and satellite phone backups are available. The primary and backup means to notify the local and state agencies from Nine Mile Point and JA Fitzpatrick is unaffected and has been tested as operable. The Emergency Response Organization (ERO) notification system is unaffected and has been confirmed as operable. Sirens and tone alerts are unaffected. Local phone service provider is investigating cause which is currently unknown. The licensee notified the NRC Resident Inspector. See related Event #43453.
Repairs to the emergency phone systems have been completed and all systems tested satisfactory as of 2012 on June 27, 2007. The licensee notified the NRC Resident Inspector. R1DO (Powell) notified. | ||
| ENS 43403 | 4 June 2007 10:55:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Partial Loss of the Public Prompt Notification System | The following event is reportable per 10CFR50.72 (b)(3)(xiii) due to partial loss of the Public Prompt Notification System. On 6/4/07 at 06:55 the Tone Alert Radio System went out of service This was communicated by the Oswego County Emergency Operations Center at 08:30. The loss of the Tone Alert Radio System is a result of a loss of Verizon phone service in the Binghamton, NY area where the Tone Alert Radio System is controlled from. The cause of Verizon phone service being out of service is unknown. Preliminary information estimates several hours until restoration complete. The county alert sirens, which also function as part of the Public Prompt Notification System are operable. The licensee notified State/local agencies and the NRC Resident Inspector. * * * UPDATE FROM J. DRISCOLL TO P. SNYDER AT 1922 ON 6/4/07 * * * On 6/4/07 at 06:55, the Tone Alert Radio System was lost due to a loss of Verizon phone service in the Binghamton, NY area, which controls the Tone Alert Radio System. At 10:10, this event was reported by ENS communication in accordance with 10CFR50.72 (b)(3)(xiii) for a partial loss of the Public Prompt Notification System. On 6/4/07 at 14:05, the Oswego County EOC notified Nine Mile Point that the Tone Alert System was returned to service. The licensee notified the NRC Resident Inspector. Notified R1DO (Barkley). | ||
| ENS 43144 | 5 February 2007 09:30:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Stack Effluent Monitoring Capability | At 0430 on 2/5/07, Nine Mile Point Unit 1 determined that the capability to determine effluent radioactivity going out the stack has been lost. It is postulated that this is likely due to moisture in the primary and auxiliary sampling line which has frozen and blocking the flow of effluent to the sample analysis equipment. Compensatory actions include monitoring alternate indications of increased radioactivity in the plant effluent steams. A method has been proceduralized to sum systems that input to the stack. Portions of the systems required for monitoring plant effluents are currently out of service for preventive maintenance. It is expected that they will be returned to service by 1700 hours today." The State of New York will be notified of this event. The NRC Resident Inspector was notified of this event by the licensee. See similar event # 43125 reported by Nine Mile Point Unit 1 on 01/26/07
The systems required for compensatory actions using alternate indications for monitoring plant effluents for the backup methodology previously reported out of service for preventative maintenance were returned to service as of 12:00 EST 2/05/07" R1DO (Bill Cook) notified. The NRC Resident Inspector was notified of this update by the licensee. | ||
| ENS 43125 | 26 January 2007 18:54:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Capability to Determine Stack Effluent Radioactivity Release Has Been Lost. | At 1354 on 01/26/07, Nine Mile Point Unit 1 determined that the capability to determine effluent radioactivity going out the stack had been lost. It is postulated that this is likely due to moisture in both the primary and aux sample lines had frozen, blocking the flow of effluent to sample analysis equipment. Compensatory actions include; monitoring of alternate indications of increased radioactivity in the plant effluent stream and the development of procedures to quantify radioactivity release rate using existing operable instrumentation." The State of New York was notified of this event. The NRC Resident Inspector was notified of this event by the licensee.
The following action is intended to provide stack effluent release rates, temporarily replacing the non-operable stack sampling and analysis system. The method being developed will assess the significant rad and ventilation contributions of each of the plant systems that exhaust to the stack: specifically, the Off Gas, Reactor, Turbine and Radwaste Building ventilation. This summation will be equivalent to the rad release that was provided by the non-operable system. This method will be procedurally based and can be accomplished by the on-shift Chemistry Technician and can be directly input into the NMP dose computer. Repairs to the inoperable system will commence on day shift 1/27/07" R1DO (Neil Perry) notified. The NRC Resident Inspector and the State of New York were notified of this update by the licensee.
The stack sample low flow issue has been corrected as of 1/27/07 at 14:55. Stack flow monitoring of stack effluent has been re-established to a normal lineup. The licensee notified the NRC Resident Inspector. Notified R1DO (Neil Perry). | ||
| ENS 42080 | 26 October 2005 07:33:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of the Tone Alert Prompt Notification System for Greater than One Hour | This notification is being made due to Nine Mile Point site losing the Tone Alert Radio System for more than 1 hour as of 0333 ET on 10/26/05. This is an 8 hour Non-Emergency per 10 CFR 50.72 (b)(3)(xiii) (Loss Comm/Asmt/Resp). Cause for the loss is unknown and under investigation at this time. Emergency planning has verified route notification is available as a compensatory measure. Nine Mile Point will provide a follow-up notification when the system is returned to Service. The licensee will inform the NRC Resident Inspector.
This notification is being made due to Nine Mile Point site losing the National Weather Service Tone Alert Radio for more than 1 hour as of 03:33 ET on 10/26/2005. This is an 8 hour Non-Emergency per 10 CFR 50.72 (b) (3) (xiii) (Loss Comm/Asmt/Resp). Cause for the loss is unknown and under investigation at this time and cause will be documented in CR-20054275. Emergency planning had verified route notification is available as a compensatory measure. Nine Mile Point Unit 1 & Unit 2 are at 100% power before and after event. Notified via RECS line by the Oswego County Warning Point the National Weather Service Tone Alert Radio has been returned to service @ 0630 October 26, 2005. A copy of this Notification Worksheet will be provided to the Resident Inspector. This event has been captured on Condition Report 2005-3679. The licensee will notify the NRC Resident Inspector. Notified the R1DO (Silk). | ||
| ENS 41677 | 7 May 2005 07:41:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Loss of Service to Tone Alert System | This is to report a (10CFR) 50.72 Non-Emergency 8 hour notification per 50.72 (b)(3)xiii. Unit 1 was notified at 05:06 (on 05/07/05) that as of 04:41 EST the Tone Alert System has been out of service for greater than 1 hour. (Licensee) will notify NRC when the system has been restored to service. See related Fitzpatrick event #41678 The licensee indicated there was no notifications being made, except for the NRC Resident Inspector.
The licensee (Matthew Minnick) reported their Tone Alert System is back in service, and will be notifying the NRC Resident Inspector of that information. | ||
| ENS 41434 | 23 February 2005 14:00:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Power Loss and Restored to Tone Alert Radio Notification System | On February 23, 2005, the state and local officials notified Nine Mile Point that there was a loss of power to the tone alert radio notification system. At 1152 EST, on February 23, 2005, power was restored to the tone alert radio notification system. (See EN #41433). The NRC Resident Inspector will be notified. | ||
| ENS 41260 | 14 December 2004 23:43:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Oswego County Prompt Notification System Out of Service for Greater than One Hour | Notified by (deleted) of the Oswego County Warning Point that the tone alert system (prompt notification system) was out of service for more than one hour as of 18:43 on 12/14/04. This requires a notification to the NRC for a major loss of notification capability in accordance with 10CFR50.72. The notification (from the County Warning Point) occurred on 12/14/04 at 19:07 via the RECS line (Radiological Emergency Communications System). Route Alert has been verified available (as backup to the tone alert system) and actions to restore (the tone alert system) are in progress. The licensee states that the malfunction on the prompt notification system only rendered the tone alert radio system inoperable. The emergency sirens are not affected. The licensee has notified the NRC Resident Inspector and Oswego County authorities. The licensee has also notified the Fitzpatrick nuclear power plant.
The prompt notification tone alert system was restored to operable at 21:45 EST on 12/14/04. Fitzpatrick and Oswego county are informed. | ||
| ENS 41093 | 5 October 2004 16:53:00 | 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | Tone Alert Notification System for Oswego County Was Determined to Be Out of Service. | On October 5, 2004 at 1253 the "Tone -Alert" notification system for Oswego County was determined to be out of service. This impacts the ability to readily notify a portion of the Emergency Planning Zone population for the Nine-Mile Point and James A. Fitzpatrick Nuclear Power Plants. The failure was caused by the unplanned loss of required telephone lines, the line between the transmitter and the National Weather Service. Verizon is currently working on repairs and expect that the repairs should be completed by 1700. The loss of the "Tone-Alert" radios constitutes a significant loss of emergency off-site communications ability. Compensatory actions have been verified to be available should the prompt notification system be needed. This consists of utilizing local law enforcement personnel for 'route-alerting' of affected areas. The NRC Resident Inspector was notified of this event by the licensee.
The "Tone-Alert" radios were restored at 1715 EDT. The licensee will inform the NRC Resident Inspector. Notified R1DO (Barkley). |