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| Entered date | Event description | |
|---|---|---|
| ENS 44827 | 3 February 2009 14:55:00 | 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). |
| ENS 43673 | 28 September 2007 16:12:00 | A single siren in the Nine Mile/FitzPatrick EPZ was inadvertently activated coincident with a thunderstorm and lightning strikes in the area of the siren. Oswego Co (New York) Emergency management officials are issuing a press release regarding the storm related siren activation. Attempts to silence the siren were not effective using the systems remote activation system further indicating that lightning affected the siren. A work crew has been dispatched to the siren to investigate and has silenced the siren. Notification is being provided to the NRC in regards to the potential for media inquiry. The licensee informed the NRC Resident Inspector. |
| ENS 43451 | 27 June 2007 14:33:00 | 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 43144 | 5 February 2007 12:25:00 | 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 42633 | 12 June 2006 17:25:00 | Feedwater was being place into long path recirculation mode in accordance with N1-OP-16 to support a chemistry sample. During this evolution, reactor water level rose high enough such that the High Level Annunciator (92.2") was received, the turbine tripped (off of the turning gear) and a HPCI (High Pressure Coolant Injection) initiation signal was received as per design. HPCI system did not initiate flow and no pumps started because the Feedwater Booster Pumps were not in service (pull-to-lock). HPCI was reset and Reactor Water level (was) restored to the operating band 65" - 83". A copy of this Notification Worksheet will be provided to the Resident Inspector. This event has been captured on Condition Report 2006-2703. A prompt investigation has been performed. The licensee notified the NRC Resident Inspector. |
| ENS 42080 | 26 October 2005 06:10:00 | 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). |