Dominion Energy is modernizing its Surry and North Anna nuclear power plants in Virginia. The goal is to ensure safe and efficient operation into the mid-21st century. The Surry plant marked its 50th anniversary in 2023 and is one of the oldest nuclear plants in the United States. In May 2021, Surry received a subsequent license renewal, allowing its two reactors to operate until 2052 and 2053. This extends their operational lifespan to 80 years. North Anna is also included in the upgrade program.
The modernization began in 2018. A key part of the project is replacing analog instrumentation and control systems with digital technology. The analog systems date back to the 1960s. The new digital systems will include large-screen monitors and glass-top controls. The main control rooms at both plants are expected to be fully converted to digital by 2034.
Robert Atkinson, Dominion’s senior generation program manager for digital I&C systems, said the project involves reviewing, replacing, and upgrading major control equipment. This includes the reactor protection system and engineered safety features. The aim is to use a common digital platform at both sites to improve operational insight and flexibility…