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This is a non-emergency eight hour notification for a loss of Emergency Assessment Capability. On December 7, 2012, the EOF/TSC air handler chiller unit was removed from service to perform planned maintenance. This maintenance activity will not affect the air filtration portion of the system and these facilities remain available for use during an emergency. This maintenance activity will be performed in a manner to minimize the time that the air handler chiller is out of service. This maintenance activity impacts the ability to maintain ambient air temperature in the facilities. The estimated duration of this activity is planned to be 12 hours.

If an emergency condition occurs that requires activation of the emergency response facilities, the EOF and TSC will be utilized. The Emergency Response Organization team members have the ability to relocate to alternate locations in accordance with emergency implementing procedures based on conditions. Alternate emergency response facilities will remain available in the event that relocation is necessary. This report is being made in accordance with 10 CFR 50.72(b)(3)(xiii), which is any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability. An update message will be provided when the emergency response facilities are restored. The licensee has notified the NRC Resident Inspector, State and local authorities.

* * * UPDATE FROM STEVE HEBLER TO PETE SNYDER AT 1948 EST ON 12/7/12 * * * 

The licensee completed maintenance and returned the EOF/TSC air handler chiller unit to service as of 1920 EST on 12/7/12. The licensee notified the NRC Resident Inspector. Notified R2DO (Blamey).

This is a non-emergency eight hour notification for a loss of Emergency Assessment Capability. On November 14, 2012, Radiation Monitor R-9, Letdown Line Radiation Monitor was removed from service at 0927 (EST) hours following failure of the internal and external source checks during performance of radiation monitor source checks. Both source checks failed high. This radiation monitor is used for accident assessment and is credited for Emergency Action Level (EAL) classification for an Unusual Event in the Robinson Nuclear Plant Emergency Plan. Additionally, this monitor is one of multiple indicators used to detect the loss of a fission product barrier. Inability to classify an EAL due to an out of service monitor is considered a loss of accident assessment capability and is reportable per 10 CFR 50.72(b)(3)(xiii) as described in NUREG-1022, Rev. 2. Actions are in place to restore the monitor to functional status. The NRC Resident Inspector has been notified.

• * * UPDATE ON 11/17/12 AT 0812 EST FROM GEORGE CURTIS TO DONG PARK * * *

At 1717 EST on 11/16/12, the Letdown Line Radiation Monitor was placed back in service and is functional. The licensee has notified the NRC Resident Inspector. Notified R2DO (Widmann).

This is a non-emergency eight hour notification for a loss of Emergency Assessment Capability. This event is reportable in accordance with 10 CFR 50.72(b)(3)(xiii) because the work activity affects the functionality of an emergency response facility. Planned maintenance activities are being performed today to the Emergency Offsite Facility (EOF)/Technical Support Center (TSC) HVAC. The work entails replacement of a pressure switch. The filtration portion of the system will not be affected by this work. This work activity is planned to be performed and completed expeditiously within about 3.5 hours including establishing and removing the clearances and performing post maintenance testing; however, restoration time required during the maintenance could exceed the time required to activate the TSC.

If an emergency condition occurs that requires activation of the EOF and TSC, plans are to utilize the EOF and TSC during the time this work activity is being performed as long as habitability conditions allow. The Emergency Response Organization team members will be relocated to alternate locations if required by habitability conditions in accordance with emergency implementing procedures. Alternate emergency response facilities will remain available in the event that relocation is necessary." The licensee has notified the NRC Resident Inspector. Licensee has also notified state and local agencies.

• * * UPDATE FROM GEORGE CURTIS TO DONALD NORWOOD AT 1025 EDT ON 9/8/2012 * * *

The maintenance work was completed. The TSC and EOF were declared operable as of 1025 EDT. The licensee will notify the NRC Resident Inspector. Notified R2DO (Lesser).

At approximately 0930 hours EDT on Thursday, April 12, 2012, the H. B. Robinson Steam Electric Plant, Unit No. 2, Technical Support Center (TSC)/Emergency Response Facility (EOF) air conditioning and charcoal filtration systems will be removed from service to facilitate the replacement of the charcoal filtration media. The duration of work is expected to be approximately 11 hours. Since the unavailability will last greater than 8 hours, this is considered a Loss of Emergency Assessment Capability, and reportable under 10 CFR 50.72(b)(3)(xiii). Due to the inability of the TSC/EOF ventilation system to maintain a habitable atmosphere, as a compensatory measure, Emergency Responders assigned to these facilities have been informed to report to the alternate facilities until such time that the TSC/EOF ventilation system has been returned to service. TSC/EOF ventilation system maintenance and post maintenance testing is scheduled to be completed by 2030 hours EDT on Thursday April 12, 2012. The NRC Resident Inspector has been informed.

• * * UPDATE FROM WARREN WONKA TO HOWIE CROUCH AT 0435 EDT ON 4/13/12 * * *

At 1814 EDT on 4/12/12, maintenance on the TSC/EOF ventilation system was completed and the TSC/EOF was returned to service. Notified R2DO (O'Donohue).

At 0900 hours EST, on December 6, 2011, Emergency Preparedness personnel determined that the Unusual Event and Alert EAL criteria for the Liquid Waste Disposal Effluent could not be achieved due to the monitor range capability. Specifically, the R-18 effluent monitor instrument range has a maximum range of 1.0E+06 with the alarm set at 1.0E+06. The UE and Alert criteria, which are 2 times the alarm and 200 times the alarm respectively, both exceed the instrument range. The NRC Resident Inspector has been notified. This condition has existed for some time (at least three years) and was discovered during a review of the Operating Experience database involving a similar condition reported by Crystal River-3. The licensee maintains the ability to perform grab samples of the liquid effluent for assessment.

• * * UPDATE ON 12/08/11 AT 2330 EST FROM RAY BUZARD TO JOHN KNOKE * * *

As a follow-up to the condition reported above, the licensee inspected other discharge and effluent radiation monitors for similar conditions and provided the following update: At 2250 hours EST, on December 8, 2011, it was determined that the Alert EAL classification criteria for the Steam Generator Blowdown radiation monitors and the Condensate Polisher Sump discharge radiation monitor could not be achieved due to the monitors range capability. Specifically, the R-19 A, B, C and the R-37 monitors instrument range have a maximum range of 1.6E+06 which is less than the Alert EAL classification criteria. This information was validated as a follow-up to a similar event which was reported on December 6, 2011 in EN# 47501. The NRC Resident Inspector has been notified. R2DO (Musser) notified.

At 0845 hours EDT, on August 25, 2010, the Emergency Response Facility Information System (ERFIS) computer system was removed from service to perform a planned modification of the ERFIS. This modification will remove obsolete software and hardware related to the Emergency Response Data System, which has been replaced by an upgraded system. The expected duration of ERFIS inoperability is approximately 3 hours. The ERFIS computer system provides monitoring and communications capability for plant data systems including the Emergency Response Data System (ERDS), Safety Parameter Display System (SPDS), Meteorological Data link system, and the Inadequate Core Cooling Monitor (ICCM). The loss of ERFIS requires alternate methods, as described in plant procedures, to be used for the above-described functions. Therefore, it is expected that appropriate assessment of plant conditions, notifications, and communications could still be made, if required, during the time that the ERFIS Computer system is inoperable. This report is being made in accordance with 10 CFR 50.72(b)(3)(xiii), which is any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability. As previously stated, alternate means remained available to assess plant conditions, make notifications, and accomplish required communications, as necessary. An additional message will be provided when the ERFIS is restored. It should also be noted that during the period of ERFIS inoperability, it is likely that the system could be restored within one hour to support Emergency Response Facility activation. This report is provided to conservatively cover the possibility that restoration within one hour may not be able to be accomplished if facility activation were to occur. The NRC Resident Inspector has been notified.

• * * UPDATE FROM DON GRANT TO JOE O'HARA AT 1454 ON 8/25/10 * * *

At 1430, the ERFIS system was returned to service. The NRC Resident Inspector has been notified. Notified the R2DO(Franke)

At 0905 hours EST, on January 27, 2007, the Emergency Response Facility Information System (ERFIS) computer system was removed from service to complete a planned modification of the ERFIS power supply system. The expected duration of ERFIS inoperability is approximately 2 hours. The ERFIS computer system provides monitoring and communications capability for plant data systems including the Emergency Response Data System (ERDS), Safety Parameter Display System (SPDS), Meteorological Data link system, and the Inadequate Core Cooling Monitor (ICCM). The loss of ERFIS requires alternate methods, as described in plant procedures, to be used for the above described functions. Therefore, it is expected that appropriate assessment or plant conditions, notifications, and communications could still be made, if required, during the time that the ERFIS computer system is inoperable. This report is being made in accordance with 10 CFR 50.72(b)(3)(xiii), which is any event that results in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability. As previously stated, alternate means remain available to assess plant conditions, make notifications, and accomplish required communications, as necessary. An update to this message will be provided when the ERFIS is restored. This message is similar to the January 6, 2007 event notification number 43081. At that time the ERFIS was being placed on an alternate power supply to allow modification of the normal power supply. This interruption of the ERFIS is due to the completion of that planned modification, which allows restoration of the ERFIS to the normal power supply. The licensee notified the NRC Resident Inspector.

• * * UPDATE ON 01/27/07 AT 1347 EST FROM LEONARD WIEGAND TO MACKINNON * * *

Emergency Response Facility Information System (ERFIS) returned to service at 1150 EST. The NRC Resident Inspector will be informed of this update by the licensee. R2DO (Brian Bonser) notified