DUKE, N.C. — Duke Energy and Duke Energy Renewable Energy Group announced Thursday that they are issuing an “emergency recall” of all Duke Energy nuclear reactors due to a rare and serious incident that has resulted in the release of radioactive water.
The company said the release was due to “a single-site incident involving a valve which was closed during a test on a Duke Energy Nuclear Fuel Pump Unit.”
Duke Energy said the valve was removed and the water released into the environment.
It said the incident is being investigated by the National Nuclear Security Administration.
The recall comes less than two weeks after Duke Energy announced it was recalling its largest nuclear reactor, the 400-megawatt Diablo Canyon nuclear plant in Southern California, due to the release.
The announcement came a day after Duke announced the first of a series of reactors at its three nuclear plants that have been shut down since January, including the two reactors at Duke’s nuclear plant near Charleston, S.C., and the nuclear plant at the University of California, Berkeley.
The companies said that after a comprehensive review of the incident, “it was determined that the valve may have been improperly closed.”
In a statement, Duke Energy said that the company will “continue to work with the U.S. Department of Energy and other regulators to fully understand the root cause of this issue.”