A string of unplanned shutdowns in the last year at Pilgrim Nuclear Power Station has led the Nuclear Regulatory Commission to downgrade the performance rating of the 41-year-old Plymouth facility, which will now be under increased scrutiny by regulators.
“The plant has slipped in its performance,” commission chair Allison Macfarlane said Friday following a scheduled tour of the plant. “It is not in the worst shape yet but it has been headed in that direction and we want to ensure they don’t get there.”
The plant has had a handful of issues this year, starting with two shutdowns in January — one caused by a leaky safety valve, and the other by the plant’s recirculation pumps, which stopped working. Full story for BostonGlobe.com subscribers.