Arkansas Nuclear Unit 2 goes offline

The Entergy (NYSE:ETR) Arkansas Nuclear One Unit 2 has gone offline.

The unit was listed at zero power generation early Feb. 25 by the Nuclear Regulatory Commission (NRC). The facility had been listed at 100% power only two days earlier.

Unit 2 is offline to conduct planned repairs to a valve on the high-pressure safety injection system, an Entergy spokesperson said Feb. 26. “This system, which is used in all pressurized water reactors, would provide coolant to the plant during certain off-normal conditions. This week’s maintenance activities reflect Entergy’s commitment to our community and our employees, demonstrating high standards in contingency planning and equipment reliability. We cannot comment on the expected duration of the maintenance outage, as that is propriety business information,” the spokesperson said.

Arkansas Nuclear One Units 1 and 2 are pressurized water reactors (PWRs) with a combined generating capacity of more than 1,800 MW. The facility is located in Russellville, Arkansas.

In January, NRC announced that it was placing the nuclear station under the highest level of regulatory scrutiny. In June 2014, the NRC issued “yellow” findings to Arkansas Nuclear One. The move followed a fatal 2013 heavy equipment handling incident at the plant.

About Wayne Barber 4201 Articles
Wayne Barber, Chief Analyst for the GenerationHub, has been covering power generation, energy and natural resources issues at national publications for more than 20 years. Prior to joining PennWell he was editor of Generation Markets Week at SNL Financial for nine years. He has also worked as a business journalist at both McGraw-Hill and Financial Times Energy. Wayne also worked as a newspaper reporter for several years. During his career has visited nuclear reactors and coal mines as well as coal and natural gas power plants. Wayne can be reached at