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Home > Electronic Reading Room > Document Collections > News Releases > 2008 > I-08-019 |
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No. I-08-019 | April 6, 2008 | |
CONTACT: | Diane Screnci (610) 337-5330 Neil A. Sheehan (610) 337-5331 |
E-mail: opa1@nrc.gov |
NRC MONITORING UNUSUAL EVENT AT MILLSTONE 2 NUCLEAR PLANT |
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The Nuclear Regulatory Commission (NRC) is monitoring an Unusual Event declared early this afternoon at the Millstone 2 nuclear power plant in Waterford, Conn. An Unusual Event is the lowest of four levels of emergency classification used by the NRC. Dominion, the plant=s owner and operator, made the declaration at 1:17 p.m. after an increase in unidentified leakage was detected at the plant. Millstone 2, a pressurized-water reactor, was shut down at the time for a scheduled refueling and maintenance outage. When operators placed a system into service to further cool down the plant, they observed increased reactor coolant system leakage and an increasing level in an on-site water-storage tank. The leakage between the reactor coolant system and the storage tank was captured by the tank and therefore there was no liquid release to the environment. The leakage to the tank has since been halted. The storage tank, by design, has a vent to the atmosphere. Some low-level radioactive gas was likely released through the tank vent. The NRC is independently evaluating any potential release and radiological consequence. The NRC began formally monitoring the event at 2:30 p.m. today. Inspectors assigned to the plant reported to the site to follow the company's actions in response to the event. In addition, the Incident Response Center at the NRC's Region I Office in King of Prussia, Pa., was activated to track developments at the plant, maintain close communications and determine if any additional actions were needed. Millstone 3, an adjoining pressurized-water reactor operated by Dominion, was not affected by the event and continues to operate at 100-percent power. Federal and state officials have been notified regarding the event. |
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