Seabrook declared an Unusual Event [HU3 - hazard or other conditions affecting plant safety] due to a spill of one gallon of ammonium hydroxide in the stockroom area of the Administration Building. No reports of injured individuals [were received] at this time. No plant or equipment damage occurred. The lower level of the Administration Building is evacuated. Personnel in
SCBAs [Self Contained Breathing Apparatus] are mitigating the spill.
The Administration Building is in the Protected Area adjacent to the Turbine Building.
The licensee notified the NRC Resident Inspector and the State.
Notified DHS, FEMA, NICC, DOE, USDA, and HHS.
At 1343 [EDT] on 6/13/12 an Unusual Event was declared due to a reported Ammonium Hydroxide spill in a storeroom on the first floor of the Administration Building. At 1357 [EDT] the State of NH was notified and at 1401 the State of Massachusetts was notified of the Unusual Event using the State Notification Fact Sheet. The delay to the State of Massachusetts notification was due to issues with the dedicated phone system.
At 1422 the NRC was notified of the Unusual Event using the Event Notification Worksheet. This initial notification reported a one gallon spill of Ammonium Hydroxide. Additionally there were no reported injuries and no impact to plant equipment.
Further investigation revealed that the spill amount is 1-2 pints out of a 1 gallon container and the initial report of no injuries was validated. The concentration of the Ammonium Hydroxide is 25.5%. The spill was confined to a small area of the store room on the first floor of the Administration Building. The spill had no impact on plant equipment used for normal operation. Initial cleanup by plant personnel is complete and external services have been notified to complete the final spill cleanup.
Seabrook Station is terminating the Unusual Event. Seabrook Station will continue to investigate and resolve the issues with the dedicated state notification phone system. Currently we have a troubleshooting team which has verified backup communications via the commercial phone lines is available.
The Unusual Event was terminated at 1730 EDT.
The licensee notified the NRC Resident Inspector and State.
Notified R1DO (Gray),
NRR ((Howe),
IRD (Grant),
DHS,
FEMA,
NICC,
DOE, USDA, and
HHS.
