Reactor building demolition progresses with major milestones for site restoration

Significant progress in nuclear decommissioning was highlighted at the recent Nuclear Decommissioning Citizens Advisory Panel meeting in Plymouth, MA, with key milestones and ongoing activities taking center stage. The meeting revealed a refined approach to decommissioning efforts, breaking down existing processes into radiological and non-radiological categories for clearer reporting.

The next major milestone is the submission of the license termination plan, set for September 2025. This plan is crucial as it outlines the steps necessary to officially close the facility. Current demolition activities are on track, with the reactor and turbine buildings scheduled for demolition between February 1931 and February 1934.

Notably, the panel reported that the internal segmentation of the reactor is complete, and preparations are underway for the cleanup of the reactor cavity and dryer separator pit, with water drainage expected to begin in early June. Concrete and soil sampling for radiological characterization is ongoing, ensuring safety and compliance throughout the decommissioning process.

In terms of site management, the removal of emergency planning zone sirens is nearing completion, with only one siren left to be removed. Additionally, the dismantlement of the main transformer, which played a vital role in electricity transmission, is currently in progress.

Looking ahead, two asbestos abatement activities are planned, focusing on turbine steam supply valves and equipment associated with steam removal from the turbine. These activities are pending approval from the Massachusetts Department of Environmental Protection.

The meeting also provided an update on water management, noting a reduction in on-site water volume to 831,802 gallons, down from 844,037 gallons. This decrease is attributed to evaporation, which has lowered the volume of water in the reactor cavity and dryer separator pit, now set to drain 382,000 gallons to the torus.

As the decommissioning process continues, the panel remains committed to transparency and community engagement, ensuring that residents are informed of developments and safety measures in place.