Decommissioning Projects: JANUS Reactor

INFORMATION: For more information, contact C. Grandy or visit the D&D website
Note on Image Credits: Unless otherwise specified, image credits go to D&D - Nuclear Engineering Division of Argonne.

 

The Bio Sciences Building was the home of the JANUS Biological Irradiation Facility.      

The Bio Sciences Building was the home of the JANUS Biological Irradiation Facility.


The JANUS reactor was the first reactor built solely for biological research.          

The JANUS reactor was the first reactor built solely for biological research.


Decommissioning of the JANUS Facility required removal of all surplus equipment. The removal of the reactor control panels required locating all electrical power sources and isolating them to protect workers.

Decommissioning of the JANUS Facility required removal of all surplus equipment. The removal of the

Health Physics technicians surveyed every piece of lead removed from the walls, floor and ceiling of the High Dose Room and the face of the reactor. They were able to free release for recycle over 200,000 pounds of lead.

Health Physics technicians surveyed every piece of lead removed from the walls, floor and ceiling

Decommissioning technicians segment the High Dose Room lead walls with an electric chain saw.

Decommissioning technicians segment the High Dose Room lead walls with an electric chain saw.

All primary system piping, internally contaminated with radioactive material, was disconnected and removed from the top of the vessel shield lid.

All primary system piping, internally contaminated with radioactive material, was disconnected and

The reactor vessel (weighing 8000 pounds, internals included) was removed from the reactor cavity containment tent and transferred to the size-reduction area using the installed 10-ton crane.

The reactor vessel (weighing 8000 pounds, internals included) was removed from the reactor cavity

Decontamination technicians remove the lead and graphite blocks from the side of the reactor vessel. Each lead block weighed approximately 30 pounds, while each graphite block weighed approximately 6 pounds.

Decontamination technicians remove the lead and graphite blocks from the side of the reactor

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