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Extreme cold shuts down N.J. Nuclear Reactor, due to an unusual ice phenomenon

Rare Ice Phenomenon Forced a Shutdown at a N.J. Nuclear Reactor, Fortune, By JIM EFSTATHIOU JR. and BLOOMBERG ,February 1, 2019

The arctic blast wreaking havoc across much of the U.S. was cold enough to shut down a nuclear reactor, thanks to a rare phenomenon called frazil ice.

Public Service Enterprise Group shut one unit at its Salem nuclear plant in southern New Jersey early Thursday after intake screens froze over, restricting the flow of water needed to cool the reactor, according to spokesman Joe Delmar. A second unit at the station on the Delaware river was powered down because of the same problem.

The 60-foot (18-meter) tall intake screens rotate in and out of the water, preventing debris like floating wood from entering the plant. Under extreme conditions like this week—overnight low temperatures at the station fell into the single digits—the frazil ice can accumulate on the screens, blocking the flow. That caused water circulators to shut down and prompted Newark-based Public Service to take the plant offline………

February 4, 2019 - Posted by | climate change, USA

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